CN105597787A - 一种单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂及其制备方法 - Google Patents
一种单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂及其制备方法 Download PDFInfo
- Publication number
- CN105597787A CN105597787A CN201610096318.3A CN201610096318A CN105597787A CN 105597787 A CN105597787 A CN 105597787A CN 201610096318 A CN201610096318 A CN 201610096318A CN 105597787 A CN105597787 A CN 105597787A
- Authority
- CN
- China
- Prior art keywords
- mos
- titanic oxide
- tio
- photochemical catalyst
- superfine titanic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 229910052982 molybdenum disulfide Inorganic materials 0.000 title claims abstract description 16
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims description 26
- 239000011941 photocatalyst Substances 0.000 title abstract description 15
- 239000004408 titanium dioxide Substances 0.000 title abstract description 8
- 239000002074 nanoribbon Substances 0.000 title abstract 6
- 239000002356 single layer Substances 0.000 title abstract 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 229910052961 molybdenite Inorganic materials 0.000 claims abstract description 13
- 239000002086 nanomaterial Substances 0.000 claims abstract description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 10
- 239000001257 hydrogen Substances 0.000 claims abstract description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000002127 nanobelt Substances 0.000 claims description 49
- 239000003054 catalyst Substances 0.000 claims description 33
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 32
- 229910052750 molybdenum Inorganic materials 0.000 claims description 32
- 239000011733 molybdenum Substances 0.000 claims description 32
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 19
- 238000013019 agitation Methods 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 18
- 239000003960 organic solvent Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 238000000967 suction filtration Methods 0.000 claims description 11
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 229960000583 acetic acid Drugs 0.000 claims description 6
- 229940010552 ammonium molybdate Drugs 0.000 claims description 6
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 6
- 239000011609 ammonium molybdate Substances 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000012362 glacial acetic acid Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- -1 thio ammonium molybdate Chemical compound 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 3
- 231100000719 pollutant Toxicity 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001699 photocatalysis Effects 0.000 abstract description 4
- 238000007146 photocatalysis Methods 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 239000000969 carrier Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 238000013032 photocatalytic reaction Methods 0.000 abstract 1
- 238000005215 recombination Methods 0.000 abstract 1
- 230000006798 recombination Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 15
- 238000006555 catalytic reaction Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000000593 degrading effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 2
- 229940012189 methyl orange Drugs 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002077 nanosphere Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- B01J35/39—
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/10—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by subjecting to electric or wave energy or particle or ionizing radiation
- A62D3/17—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by subjecting to electric or wave energy or particle or ionizing radiation to electromagnetic radiation, e.g. emitted by a laser
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/10—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by subjecting to electric or wave energy or particle or ionizing radiation
- A62D3/17—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by subjecting to electric or wave energy or particle or ionizing radiation to electromagnetic radiation, e.g. emitted by a laser
- A62D3/176—Ultraviolet radiations, i.e. radiation having a wavelength of about 3nm to 400nm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
- B01J27/047—Sulfides with chromium, molybdenum, tungsten or polonium
- B01J27/051—Molybdenum
-
- B01J35/40—
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/042—Decomposition of water
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/26—Organic substances containing nitrogen or phosphorus
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/28—Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0266—Processes for making hydrogen or synthesis gas containing a decomposition step
- C01B2203/0277—Processes for making hydrogen or synthesis gas containing a decomposition step containing a catalytic decomposition step
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
本发明公开了一种单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂,是由尺寸长为100nm~300nm,宽为5nm~15nm,厚度为1nm~5nm的超细二氧化钛纳米带和在其表面包裹一层的厚度为0.8nm~3nm的二维纳米材料MoS2构成,其中所述光催化剂中以质量比计,MoS2:TiO2=0.1~10:100。本发明的光催化剂结合了MoS2以及TiO2的性质,一方面在光照作用下,MoS2有利于载流子分子,且产生的载流子促进了超细TiO2纳米带的光催化反应活性,对有机污染模型物的降解以及光催化产氢都有良好的催化性能;另一方面该异质结能有效抑制所产生的载流子复合。本发明所述光催化剂合成工艺、设备简单,成本低、效率高,反应周期短,重复性好,工业化应用前景广阔。
Description
技术领域
本发明涉及一种异质结构光催化剂及其制备方法,尤其涉及一种单层二硫化钼/超细二氧化钛纳米带(MoS2/TiO2)异质结构光催化剂及其制备方法与应用,属于纳米材料光催化技术领域。
背景技术
光催化剂是一种自身不参与反应并加速光化学反应的物质。光催化是光化学与催化剂的有机结合。在环境污染以及能源危机的大背景下,光催化制备清洁能源-氢气以及降解有机污染物是近年来发展起来的一种高效绿色环保新技术。但是其作为新功能材料的研发,也面临很多局限性,如催化性能单一,催化剂效率、失活以及二次污染,太阳光利用率低等。基于此,开发和构建异质结构已成为目前获得新型高性能光催化材料的重要手段。
继石墨烯之后,二硫化钼是备受广泛关注的层状纳米材料。单层二硫化钼具有优越的发光效率,优良的光子迁移率以及自身化学稳定性,在二维材料电子学等领域已具有较为广泛的深入探究,有专家预测单层二硫化钼是全球科学家认为新世代半导体颇有潜力的材料[HUANGYL,CHENY,ZHANGW,etal.Bandgaptunabilityatsingle-layermolybdenumdisulphidegrainboundaries[J].Naturecommunications,2015,6(6298.]。
二氧化钛是目前较为成熟的光催化材料,其中纳米二氧化钛P25,二氧化钛纳米球,纳米花,纳米棒等纳米材料具有良好的紫外光催化性能,其光催化性能已有广泛报道。但是即便是成熟的光催化材料仍存在以下诸多缺点:高催化活性面暴露少、回收分离难、仅在紫外光条件下激发,太阳光利用率低等。超细二氧化钛纳米带同样仅在紫外光下具有较高的催化性能,但是其具有较高的活性面,易回收等优点。然而迄今为止,对于单层二硫化钼/超细二氧化钛纳米带复合形成的异质结构,并利用单层二硫化钼与超细二氧化钛纳米带异质结构作为光催化剂在催化降解污染物以及产氢中的应用还未见报道。
发明内容
针对现有技术的不足,本发明要解决的问题是提供一种具有光催化降解污染物以及产氢两种性能的单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂及其制备方法与应用。
本发明所述的单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂,其特征在于:所述光催化剂由尺寸长为100nm~300nm,宽为5nm~15nm,厚度为1nm~5nm的超细二氧化钛纳米带和在其表面包裹一层的厚度为0.8nm~3nm的二维纳米材料MoS2构成,其中所述光催化剂中以质量比计,MoS2:TiO2=0.1~10:100。
上述单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂优选的实施方式是:所述光催化剂由尺寸长为200nm±50nm,宽为10nm±2nm,厚度为3nm±1nm的超细二氧化钛纳米带和在其表面包裹一层的厚度为1nm±0.2nm的二维纳米材料MoS2构成,其中所述光催化剂中以质量比计,MoS2:TiO2=3~6:100,最优选MoS2:TiO2=5:100。
本发明所述单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂的制备方法,步骤是:
①以体积比计,按N,N-二甲基甲酰胺:冰醋酸(DMF:HAc)=6:4的比例配制混合有机溶剂,将该混合有机溶剂、LiAc·2H2O、钛酸四丁酯按10L混合有机溶剂,200gLiAc·2H2O,2L钛酸四丁酯的比例量依次加入到水热反应釜中,填充度控制在反应釜容积的50%~80%,并搅拌均匀;然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应16h~24h,反应结束后自然冷却至室温,所得产物用无水乙醇反复冲洗至中性,然后抽滤、干燥,得到的白色粉末为超细二氧化钛纳米带;
②取步骤①制得的超细二氧化钛纳米带粉末分散在水中,超声搅拌30±5min,制备浓度为0.5g//L~5g/L的TiO2悬浊液,所得溶液标记为A;
③按质量比MoS2:TiO2=0.1~10:100的比例,在超声搅拌条件下向A溶液中加入相应反应量的四硫代钼酸铵,并继续超声搅拌60±5min,所得溶液标记为B;
④将B溶液加入到水热反应釜中,填充度控制在反应釜容积的50%~80%,然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应16h~24h,反应结束后自然冷却至室温,所得产物用去离子水反复冲洗,然后抽滤、干燥,得到的固体粉末即为单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂。
上述单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂的制备方法中:步骤③所述MoS2:TiO2优选为3~6:100,最优选为5:100。
本发明所述的单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂在催化降解污染物及光催化产氢中的应用。
本发明采用水热法制备了单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂,获得了由超细TiO2纳米带和在其表面包裹二维纳米材料MoS2的MoS2-TiO2纳米带异质结构光催化材料。本发明中利用了单层二硫化钼的高效光吸收性,优良的电子迁移率以及良好的化学稳定性以及超细纳米二氧化钛的优点两者复合,成功制备了单层二硫化钼包裹二氧化钛纳米带复合光催化剂,在太阳光下对甲基橙具有良好的降解效果以及产氢性能。
实验证实:本发明的异质结构光催化剂以TiO2为基质,表面负载具有高催化活性的二维纳米材料MoS2,结合了优良光催化剂TiO2以及高光子吸收、迁移率的MoS2的性质,在光照作用下,有利于载流子分子,另外产生的载流子,促进了TiO2的光催化反应活性。在光照条件下,对有机污染模型物的降解以及光催化产氢都有良好的催化性能。
附图说明
图1为制备的MoS2、TiO2、单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂材料的X-射线衍射(XRD)图谱。
图2为制备的单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂材料的透射电镜(TEM)照片。
图3为制备的单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂材料透射电镜(TEM)高倍下的照片。
图4为单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂材料扫描透射电镜(STEM)照片
其中:(a)为制备的单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂材料的扫描透射电镜(STEM)照片,(b)为EDSmapping,(c)为STEM照片的局部放大TEM照片。
图5为单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂在紫外光,可见光光照下的降解图,及光催化产氢随时间变化的曲线图
其中:(a)和(b)为制备的单层MoS2/超细TiO2纳米带异质结构光催化剂材料在紫外光(a),可见光(b)光照下的降解图,(c)为光催化产氢随时间变化的曲线图。
具体实施方式
实施例1:
①以体积比计,按N,N-二甲基甲酰胺:冰醋酸(DMF:HAc)=6:4的比例配制混合有机溶剂,将该混合有机溶剂、LiAc·2H2O、钛酸四丁酯按10L混合有机溶剂,200gLiAc·2H2O,2L钛酸四丁酯的比例量依次加入到水热反应釜中,填充度控制在反应釜容积的50%~80%,并搅拌均匀;然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应20h,反应结束后自然冷却至室温,所得产物用无水乙醇反复冲洗至中性,然后抽滤、干燥,得到的白色粉末为超细二氧化钛纳米带;
②取步骤①制得的超细二氧化钛纳米带粉末分散在水中,超声搅拌30±5min,制备浓度为3.5g/L的TiO2悬浊液,所得溶液标记为A;
③按质量比MoS2:TiO2=5:100的比例,在超声搅拌条件下向A溶液中加入相应反应量的四硫代钼酸铵,并继续超声搅拌60±5min,所得溶液标记为B;
④将B溶液加入到水热反应釜中,填充度控制在反应釜容积的50%~80%,然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应20h,反应结束后自然冷却至室温,所得产物用去离子水反复冲洗,然后抽滤、干燥,得到的固体粉末即为单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂。
将实施例中涉及的MoS2、TiO2、单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂样品用德国布鲁克D8X-射线衍射仪分析(结果见图1)。
将所得的单层MoS2/超细TiO2纳米带异质结构光催化剂材料样品用日本JEOL公司生产JEM2100F型透射电子显微镜进行观察(结果见图2、图3),并在暗场模式下对催化剂元素分布进行分析。单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂材料扫描透射电镜(STEM)照片结果见图4。
将所得的单层MoS2/超细TiO2纳米带异质结构光催化剂材料样品紫外光(UV)以及可见光(Vis)照射下对甲基橙进行降解,分别经15min、120min照射后降解到100%(结果见图5a以及图5b);同时测得在模拟太阳光照射条件下光解水产氢速率为75.0μmol·g-1·h-1(结果见图5c)。
实施例2:
①以体积比计,按N,N-二甲基甲酰胺:冰醋酸(DMF:HAc)=6:4的比例配制混合有机溶剂,将该混合有机溶剂、LiAc·2H2O、钛酸四丁酯按10L混合有机溶剂,200gLiAc·2H2O,2L钛酸四丁酯的比例量依次加入到水热反应釜中,填充度控制在反应釜容积的60%~80%,并搅拌均匀;然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应16h,反应结束后自然冷却至室温,所得产物用无水乙醇反复冲洗至中性,然后抽滤、干燥,得到的白色粉末为超细二氧化钛纳米带;
②取步骤①制得的超细二氧化钛纳米带粉末分散在水中,超声搅拌30±5min,制备浓度为1.5g/L的TiO2悬浊液,所得溶液标记为A;
③按质量比MoS2:TiO2=10:100的比例,在超声搅拌条件下向A溶液中加入相应反应量的四硫代钼酸铵,并继续超声搅拌60±5min,所得溶液标记为B;
④将B溶液加入到水热反应釜中,填充度控制在反应釜容积的60%~80%,然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应16h,反应结束后自然冷却至室温,所得产物用去离子水反复冲洗,然后抽滤、干燥,得到的固体粉末即为单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂。
实施例3:
①以体积比计,按N,N-二甲基甲酰胺:冰醋酸(DMF:HAc)=6:4的比例配制混合有机溶剂,将该混合有机溶剂、LiAc·2H2O、钛酸四丁酯按10L混合有机溶剂,200gLiAc·2H2O,2L钛酸四丁酯的比例量依次加入到水热反应釜中,填充度控制在反应釜容积的60%~70%,并搅拌均匀;然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应24h,反应结束后自然冷却至室温,所得产物用无水乙醇反复冲洗至中性,然后抽滤、干燥,得到的白色粉末为超细二氧化钛纳米带;
②取步骤①制得的超细二氧化钛纳米带粉末分散在水中,超声搅拌30±5min,制备浓度为4.5g/L的TiO2悬浊液,所得溶液标记为A;
③按质量比MoS2:TiO2=3:100的比例,在超声搅拌条件下向A溶液中加入相应反应量的四硫代钼酸铵,并继续超声搅拌60±5min,所得溶液标记为B;
④将B溶液加入到水热反应釜中,填充度控制在反应釜容积的60%~70%,然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应24h,反应结束后自然冷却至室温,所得产物用去离子水反复冲洗,然后抽滤、干燥,得到的固体粉末即为单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂。
实施例4:
①以体积比计,按N,N-二甲基甲酰胺:冰醋酸(DMF:HAc)=6:4的比例配制混合有机溶剂,将该混合有机溶剂、LiAc·2H2O、钛酸四丁酯按10L混合有机溶剂,200gLiAc·2H2O,2L钛酸四丁酯的比例量依次加入到水热反应釜中,填充度控制在反应釜容积的70%,并搅拌均匀;然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应22h,反应结束后自然冷却至室温,所得产物用无水乙醇反复冲洗至中性,然后抽滤、干燥,得到的白色粉末为超细二氧化钛纳米带;
②取步骤①制得的超细二氧化钛纳米带粉末分散在水中,超声搅拌30±5min,制备浓度为5g/L的TiO2悬浊液,所得溶液标记为A;
③按质量比MoS2:TiO2=6:100的比例,在超声搅拌条件下向A溶液中加入相应反应量的四硫代钼酸铵,并继续超声搅拌60±5min,所得溶液标记为B;
④将B溶液加入到水热反应釜中,填充度控制在反应釜容积的70%,然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应22h,反应结束后自然冷却至室温,所得产物用去离子水反复冲洗,然后抽滤、干燥,得到的固体粉末即为单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂。
Claims (6)
1.一种单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂,其特征在于:所述光催化剂由尺寸长为100nm~300nm,宽为5nm~15nm,厚度为1nm~5nm的超细二氧化钛纳米带和在其表面包裹一层的厚度为0.8nm~3nm的二维纳米材料MoS2构成,其中所述光催化剂中以质量比计,MoS2:TiO2=0.1~10:100。
2.如权利要求1所述的单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂,其特征在于:所述光催化剂由尺寸长为200nm±50nm,宽为10nm±2nm,厚度为3nm±1nm的超细二氧化钛纳米带和在其表面包裹一层的厚度为1nm±0.2nm的二维纳米材料MoS2构成,其中所述光催化剂中以质量比计,MoS2:TiO2=3~6:100。
3.权利要求1或2所述单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂的制备方法,步骤是:
①以体积比计,按N,N-二甲基甲酰胺:冰醋酸(DMF:HAc)=6:4的比例配制混合有机溶剂,将该混合有机溶剂、LiAc·2H2O、钛酸四丁酯按10L混合有机溶剂,200gLiAc·2H2O,2L钛酸四丁酯的比例量依次加入到水热反应釜中,填充度控制在反应釜容积的50%~80%,并搅拌均匀;然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应16h~24h,反应结束后自然冷却至室温,所得产物用无水乙醇反复冲洗至中性,然后抽滤、干燥,得到的白色粉末为超细二氧化钛纳米带;
②取步骤①制得的超细二氧化钛纳米带粉末分散在水中,超声搅拌30±5min,制备浓度为0.5g//L~5g/L的TiO2悬浊液,所得溶液标记为A;
③按质量比MoS2:TiO2=0.1~10:100的比例,在超声搅拌条件下向A溶液中加入相应反应量的四硫代钼酸铵,并继续超声搅拌60±5min,所得溶液标记为B;
④将B溶液加入到水热反应釜中,填充度控制在反应釜容积的50%~80%,然后密封水热反应釜,将其放入干燥箱中,使水热温度控制在200±10℃,反应16h~24h,反应结束后自然冷却至室温,所得产物用去离子水反复冲洗,然后抽滤、干燥,得到的固体粉末即为单层二硫化钼/超细二氧化钛纳米带(MoS2-TiO2)异质结构光催化剂。
4.如权利要求3所述单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂的制备方法,其特征在于:步骤③所述MoS2:TiO2=3~6:100。
5.如权利要求3所述单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂的制备方法,其特征在于:步骤③所述MoS2:TiO2=5:100。
6.权利要求1或2所述的单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂在催化降解污染物及光催化产氢中的应用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610096318.3A CN105597787B (zh) | 2016-02-22 | 2016-02-22 | 一种单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610096318.3A CN105597787B (zh) | 2016-02-22 | 2016-02-22 | 一种单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105597787A true CN105597787A (zh) | 2016-05-25 |
CN105597787B CN105597787B (zh) | 2017-10-31 |
Family
ID=55978453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610096318.3A Active CN105597787B (zh) | 2016-02-22 | 2016-02-22 | 一种单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105597787B (zh) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106423223A (zh) * | 2016-09-20 | 2017-02-22 | 中国计量大学 | 一种饼状多孔结构MoSe2@TiO2光催化剂及其制备方法 |
CN106861721A (zh) * | 2016-12-22 | 2017-06-20 | 南昌航空大学 | 二硫化钼单体催化剂的制备方法 |
CN106902847A (zh) * | 2017-03-24 | 2017-06-30 | 青岛大学 | 一种二硫化钼/钛酸钡超声可见光催化剂及其制备与应用 |
CN107096548A (zh) * | 2017-05-27 | 2017-08-29 | 青岛大学 | 一种二硫化钼量子点/超细二氧化钛异质结纳米带光催化剂及其制备方法与应用 |
CN109331799A (zh) * | 2018-10-22 | 2019-02-15 | 安徽理工大学 | 一种粉煤灰负载二氧化钛光催化材料及其制备方法 |
CN111408386A (zh) * | 2020-04-01 | 2020-07-14 | 环科创建有限公司 | 一种MoS2量子点负载纳米TiO2的制备方法 |
CN113354298A (zh) * | 2021-06-02 | 2021-09-07 | 桂林电子科技大学 | 一种SnO2/MoS2二维大孔复合材料薄膜、制备方法及其应用 |
CN115124869A (zh) * | 2022-05-27 | 2022-09-30 | 佛山电器照明股份有限公司 | 可见光响应的空间净化涂料及其制备方法、灯具 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106799244B (zh) * | 2017-01-10 | 2019-10-01 | 江苏大学 | 一种三元复合光催化剂的制备方法和用途 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140353166A1 (en) * | 2013-05-09 | 2014-12-04 | North Carolina State University | Novel process for scalable synthesis of molybdenum disulfide monolayer and few-layer films |
CN104402052A (zh) * | 2014-10-30 | 2015-03-11 | 华东师范大学 | TiO2量子点复合MoS2纳米花异质结半导体材料及其制备方法 |
CN105098151A (zh) * | 2015-06-19 | 2015-11-25 | 上海交通大学 | 一种二硫化钼-碳空心球杂化材料及其制备方法 |
CN105148947A (zh) * | 2015-08-27 | 2015-12-16 | 江南大学 | TiO2@MoS2复合物的制备与应用 |
CN105195133A (zh) * | 2015-09-18 | 2015-12-30 | 黑龙江大学 | 一种用于制氢的二硫化钼/黑色二氧化钛复合可见光催化剂的制备方法 |
-
2016
- 2016-02-22 CN CN201610096318.3A patent/CN105597787B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140353166A1 (en) * | 2013-05-09 | 2014-12-04 | North Carolina State University | Novel process for scalable synthesis of molybdenum disulfide monolayer and few-layer films |
CN104402052A (zh) * | 2014-10-30 | 2015-03-11 | 华东师范大学 | TiO2量子点复合MoS2纳米花异质结半导体材料及其制备方法 |
CN105098151A (zh) * | 2015-06-19 | 2015-11-25 | 上海交通大学 | 一种二硫化钼-碳空心球杂化材料及其制备方法 |
CN105148947A (zh) * | 2015-08-27 | 2015-12-16 | 江南大学 | TiO2@MoS2复合物的制备与应用 |
CN105195133A (zh) * | 2015-09-18 | 2015-12-30 | 黑龙江大学 | 一种用于制氢的二硫化钼/黑色二氧化钛复合可见光催化剂的制备方法 |
Non-Patent Citations (4)
Title |
---|
HUI LIU ET AL: "Efficient synthesis of MoS2 nanoparticles modified TiO2 nanobelts with enhanced visible-light-driven photocatalytic activity", 《JOURNAL OF MOLECULAR CATALYSIS A:CHEMICAL》 * |
WEIJIA ZHOU ET AL: "Synthesis of Few-Layer MoS2 Nanosheet-Coated TiO2 Nanobelt Heterostructures for Enhanced Photocatalytic Activities", 《SMALL》 * |
孟蕾: "《碳、硅二维晶体材料的生长、结构和物性》", 31 January 2015, 中央名族大学出版社 * |
张明龙等: "《国外材料领域创新进展》", 30 June 2015, 知识产权出版社 * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106423223A (zh) * | 2016-09-20 | 2017-02-22 | 中国计量大学 | 一种饼状多孔结构MoSe2@TiO2光催化剂及其制备方法 |
CN106423223B (zh) * | 2016-09-20 | 2019-04-09 | 中国计量大学 | 一种饼状多孔结构MoSe2@TiO2光催化剂及其制备方法 |
CN106861721A (zh) * | 2016-12-22 | 2017-06-20 | 南昌航空大学 | 二硫化钼单体催化剂的制备方法 |
CN106902847A (zh) * | 2017-03-24 | 2017-06-30 | 青岛大学 | 一种二硫化钼/钛酸钡超声可见光催化剂及其制备与应用 |
CN107096548A (zh) * | 2017-05-27 | 2017-08-29 | 青岛大学 | 一种二硫化钼量子点/超细二氧化钛异质结纳米带光催化剂及其制备方法与应用 |
CN109331799A (zh) * | 2018-10-22 | 2019-02-15 | 安徽理工大学 | 一种粉煤灰负载二氧化钛光催化材料及其制备方法 |
CN109331799B (zh) * | 2018-10-22 | 2021-06-08 | 安徽理工大学 | 一种粉煤灰负载二氧化钛光催化材料及其制备方法 |
CN111408386A (zh) * | 2020-04-01 | 2020-07-14 | 环科创建有限公司 | 一种MoS2量子点负载纳米TiO2的制备方法 |
CN113354298A (zh) * | 2021-06-02 | 2021-09-07 | 桂林电子科技大学 | 一种SnO2/MoS2二维大孔复合材料薄膜、制备方法及其应用 |
CN113354298B (zh) * | 2021-06-02 | 2022-05-24 | 桂林电子科技大学 | 一种SnO2/MoS2二维大孔复合材料薄膜、制备方法及其应用 |
CN115124869A (zh) * | 2022-05-27 | 2022-09-30 | 佛山电器照明股份有限公司 | 可见光响应的空间净化涂料及其制备方法、灯具 |
CN115124869B (zh) * | 2022-05-27 | 2024-04-16 | 佛山电器照明股份有限公司 | 可见光响应的空间净化涂料及其制备方法、灯具 |
Also Published As
Publication number | Publication date |
---|---|
CN105597787B (zh) | 2017-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105597787A (zh) | 一种单层二硫化钼/超细二氧化钛纳米带异质结构光催化剂及其制备方法 | |
Zhong et al. | Two-dimensional MXene-based and MXene-derived photocatalysts: Recent developments and perspectives | |
Xu et al. | BiVO4@ MoS2 core-shell heterojunction with improved photocatalytic activity for discoloration of Rhodamine B | |
Jia et al. | Highly efficient (BiO) 2CO3-BiO2-x-graphene photocatalysts: Z-Scheme photocatalytic mechanism for their enhanced photocatalytic removal of NO | |
Wang et al. | Defects modified in the exfoliation of g-C3N4 nanosheets via a self-assembly process for improved hydrogen evolution performance | |
Zhang et al. | Structure regulation of ZnS@ g-C3N4/TiO2 nanospheres for efficient photocatalytic H2 production under visible-light irradiation | |
Li et al. | Free-standing and flexible Cu/Cu2O/CuO heterojunction net: A novel material as cost-effective and easily recycled visible-light photocatalyst | |
Ke et al. | UV-assisted construction of 3D hierarchical rGO/Bi2MoO6 composites for enhanced photocatalytic water oxidation | |
Liu et al. | A facile solvothermal approach of novel Bi2S3/TiO2/RGO composites with excellent visible light degradation activity for methylene blue | |
Ni et al. | Fabrication, modification and application of (BiO) 2CO3-based photocatalysts: a review | |
Liu et al. | Mesoporous g-C3N4 nanosheets with improved photocatalytic performance for hydrogen evolution | |
Xu et al. | Fabrication of one-dimensional heterostructured TiO 2@ SnO 2 with enhanced photocatalytic activity | |
Xu et al. | Nitrogen-rich graphitic carbon nitride nanotubes for photocatalytic hydrogen evolution with simultaneous contaminant degradation | |
Yi et al. | CeO2/Bi2MoO6 heterostructured microspheres with synergistic effect for accelerating photogenerated charge separation | |
Wang et al. | Visible-light driven ZnIn2S4/TiO2-x heterostructure for boosting photocatalytic H2 evolution | |
Sun et al. | Facile synthesis of two clay minerals supported graphitic carbon nitride composites as highly efficient visible-light-driven photocatalysts | |
Chen et al. | Facile synthesis of well-dispersed Bi2S3 nanoparticles on reduced graphene oxide and enhanced photocatalytic activity | |
Zhao et al. | Synthesis of one-dimensional α-Fe2O3/Bi2MoO6 heterostructures by electrospinning process with enhanced photocatalytic activity | |
CN105797753A (zh) | 一种MoS2/TiO2二维复合纳米光催化剂及其制备方法和应用 | |
Ji et al. | Synergistic effects of MoO2 nanosheets and graphene-like C3N4 for highly improved visible light photocatalytic activities | |
Hu et al. | In2S3 nanoparticles coupled to In-MOF nanorods: The structural and electronic modulation for synergetic photocatalytic degradation of Rhodamine B | |
Chen et al. | Fabrication of TiO2 nanofibers assembled by Bi2WO6 nanosheets with enhanced visible light photocatalytic activity | |
Wang et al. | Pn heterostructured TiO2/NiO double-shelled hollow spheres for the photocatalytic degradation of papermaking wastewater | |
Zhang et al. | A 1D/2D WO 3 nanostructure coupled with a nanoparticulate CuO cocatalyst for enhancing solar-driven CO 2 photoreduction: The impact of the crystal facet | |
CN108043436A (zh) | 碳化钼/硫铟锌复合光催化剂的制备方法及其应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |