CN114014364B - 一种环保的制备钨青铜纳米材料的方法 - Google Patents
一种环保的制备钨青铜纳米材料的方法 Download PDFInfo
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- 229910000906 Bronze Inorganic materials 0.000 title claims abstract description 43
- 239000010974 bronze Substances 0.000 title claims abstract description 43
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 title claims abstract description 43
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 23
- 239000010937 tungsten Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002086 nanomaterial Substances 0.000 title claims abstract description 13
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000002906 tartaric acid Nutrition 0.000 claims abstract description 17
- 239000011975 tartaric acid Substances 0.000 claims abstract description 17
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 9
- 239000012265 solid product Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- 239000011259 mixed solution Substances 0.000 claims description 11
- AVTYONGGKAJVTE-OLXYHTOASA-L potassium L-tartrate Chemical compound [K+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O AVTYONGGKAJVTE-OLXYHTOASA-L 0.000 claims description 9
- 239000001472 potassium tartrate Substances 0.000 claims description 9
- 229940111695 potassium tartrate Drugs 0.000 claims description 9
- 235000011005 potassium tartrates Nutrition 0.000 claims description 9
- -1 potassium tungstate dihydrate Chemical class 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- MFGOFGRYDNHJTA-UHFFFAOYSA-N 2-amino-1-(2-fluorophenyl)ethanol Chemical compound NCC(O)C1=CC=CC=C1F MFGOFGRYDNHJTA-UHFFFAOYSA-N 0.000 claims description 5
- HUCVOHYBFXVBRW-UHFFFAOYSA-M caesium hydroxide Inorganic materials [OH-].[Cs+] HUCVOHYBFXVBRW-UHFFFAOYSA-M 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 2
- 229910052792 caesium Inorganic materials 0.000 claims description 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract description 8
- 229940095064 tartrate Drugs 0.000 abstract description 8
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 abstract description 8
- 230000003287 optical effect Effects 0.000 abstract description 6
- 150000001339 alkali metal compounds Chemical class 0.000 abstract description 5
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- OHUPZDRTZNMIJI-UHFFFAOYSA-N [Cs].[W] Chemical compound [Cs].[W] OHUPZDRTZNMIJI-UHFFFAOYSA-N 0.000 description 14
- 230000008033 biological extinction Effects 0.000 description 13
- 239000007787 solid Substances 0.000 description 11
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 10
- ZGRBQKWGELDHSV-UHFFFAOYSA-N N.[W+4] Chemical compound N.[W+4] ZGRBQKWGELDHSV-UHFFFAOYSA-N 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 235000019270 ammonium chloride Nutrition 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- QWMFKVNJIYNWII-UHFFFAOYSA-N 5-bromo-2-(2,5-dimethylpyrrol-1-yl)pyridine Chemical compound CC1=CC=C(C)N1C1=CC=C(Br)C=N1 QWMFKVNJIYNWII-UHFFFAOYSA-N 0.000 description 3
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 3
- 229910000024 caesium carbonate Inorganic materials 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- FGDZQCVHDSGLHJ-UHFFFAOYSA-M rubidium chloride Chemical compound [Cl-].[Rb+] FGDZQCVHDSGLHJ-UHFFFAOYSA-M 0.000 description 2
- CPRMKOQKXYSDML-UHFFFAOYSA-M rubidium hydroxide Chemical compound [OH-].[Rb+] CPRMKOQKXYSDML-UHFFFAOYSA-M 0.000 description 2
- 235000011006 sodium potassium tartrate Nutrition 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- LIHHHYMOABTJCZ-UHFFFAOYSA-N [Rb].[W] Chemical compound [Rb].[W] LIHHHYMOABTJCZ-UHFFFAOYSA-N 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- AIYUHDOJVYHVIT-UHFFFAOYSA-M caesium chloride Chemical compound [Cl-].[Cs+] AIYUHDOJVYHVIT-UHFFFAOYSA-M 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- AAQNGTNRWPXMPB-UHFFFAOYSA-N dipotassium;dioxido(dioxo)tungsten Chemical compound [K+].[K+].[O-][W]([O-])(=O)=O AAQNGTNRWPXMPB-UHFFFAOYSA-N 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 description 1
- 229940074439 potassium sodium tartrate Drugs 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- WPFGFHJALYCVMO-UHFFFAOYSA-L rubidium carbonate Chemical compound [Rb+].[Rb+].[O-]C([O-])=O WPFGFHJALYCVMO-UHFFFAOYSA-L 0.000 description 1
- 229910000026 rubidium carbonate Inorganic materials 0.000 description 1
- 229940102127 rubidium chloride Drugs 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 description 1
- 239000001476 sodium potassium tartrate Substances 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical group [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000004729 solvothermal method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229960001367 tartaric acid Drugs 0.000 description 1
- YOUIDGQAIILFBW-UHFFFAOYSA-J tetrachlorotungsten Chemical compound Cl[W](Cl)(Cl)Cl YOUIDGQAIILFBW-UHFFFAOYSA-J 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
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- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
本发明公开了一种环保的制备钨青铜纳米材料的方法。本发明采用低温水热合成法,将钨酸盐、酒石酸和/或酒石酸盐、碱金属化合物和/或铵源依次溶解在水中,充分混合后置于水热反应釜中,使用均相反应器控制反应温度120‑200℃,反应12‑24h,将得到的固体产物清洗、烘干,制得钨青铜纳米材料。该方法使用的原料价格低廉且环保,易于工业放大及规模化生产,生产出的钨青铜纳米材料尺寸约50‑200nm,结晶度好,表现出较优的光学特性。
Description
技术领域
本发明涉及一种环保的制备钨青铜纳米材料的方法,属于钨青铜材料的制备技术领域,具体涉及在低温水相中利用环保廉价的酒石酸(盐)作为还原剂制备钨青铜纳米材料的方法。
背景技术
钨青铜材料是一类非化学计量的化合物,分子式表示为MxWO3(0<x<1),M为碱土金属、碱金属、稀土金属、铵离子等,它的实质是上述离子***WO3晶格而形成的固溶体,其中钨的价态为+5和+6价。钨青铜由于良好的力学、光学、热学性能,被广泛的应用于光热治疗、红外屏蔽、保温涂层,同时由于其化学惰性,也作为催化剂使用。
钨青铜的制备方法主要有化学气相传输法(Journal of Solid StateChemistry,2008,181(1):90-100)、高温固相反应法(Journal of the American CeramicSociety,2018,(10):4458-4462)、低温熔盐合成法(CN 107601568 A)、水热或溶剂热法(CN103496744 A)等,目前这几种方法主要存在的问题有:1.工艺需要在高温或超高温进行;2.反应采用有机相,或引入油胺、油酸,易污染环境,属于易燃易爆危险品,对于化工生产带来极大困扰;3.工艺中选用的钨源为价格昂贵且具有腐蚀性的WCl6或WCl4;4.结晶度不好(低温熔盐合成法)。
发明内容
针对目前存在的问题,本发明的目的是提供一种钨青铜纳米材料的水相合成法,使用价格低廉且环保的原材料,在低温水相中合成纳米尺度的钨青铜材料,实现钨青铜的放大生产及安全管理。
为实现上述的目的,本发明采用如下技术方案:
一种制备钨青铜纳米材料的方法,包括以下步骤:
步骤一:将钨酸盐、酒石酸和/或酒石酸盐、碱金属化合物和/或铵源依次溶解在水中,并充分混合;
步骤二:将混合溶液置于水热反应釜中,使用均相反应器,控制反应温度120-200℃,反应12-24h,得到固体产物;
步骤三:将固体产物采用去离子水清洗多次,烘干,得到深蓝色纳米钨青铜。
所述钨青铜纳米材料的分子式为MxWO3,其中0<x<1,M为碱金属铯(Cs+)和/或铷(Rb+),或者为铵根离子(NH4 +)。
所述钨酸盐为钨酸钠和/或钨酸钾。
在上述方法中,以酒石酸或酒石酸盐充当还原剂,具体可以是酒石酸、酒石酸钾、酒石酸钠、酒石酸钾钠中的一种或多种。
所述碱金属化合物优选为氯化铯、碳酸铯、氢氧化铯、氯化铷、碳酸铷、氢氧化铷中的一种或多种;所述铵源优选为氯化铵、碳酸铵等。
在步骤一中,优选的,每种物质溶解在水中的间隔时间为5~10min。
步骤一获得的混合溶液中,钨酸盐的浓度为0.1~1.0mol/L;作为还原剂的酒石酸和/或酒石酸盐的总浓度为0.2~2.0mol/L;碱金属化合物和/或铵源的浓度为0.033~0.33mol/L。
进一步的,在反应中所述还原剂与钨酸盐的摩尔比为1:1~10:1;所述碱金属化合物和/或铵源与钨酸盐的摩尔比为0.1~1.0。
在步骤三中,产物清洗后可以采用烘箱60℃烘干。
本发明方法可以达到以下的有益效果:
本发明操作简单,同时反应的温度低(120~200℃),有利于节能减排;
本发明采用的反应体系为水相,且反应物均为固体,同时价格低廉,环境友好,易于工业放大及规模化生产;
本发明采用的钨源为钨酸盐,克服了传统采用氯化钨的腐蚀性,同时钨酸盐中钨酸根离子有利于反应的进行;
本发明采用的酒石酸或酒石酸盐为还原剂,充分利用其中的醇羟基的还原性,且酒石酸或酒石酸盐为固态非危险化学品,与传统的油胺、油酸等还原剂相比更加友好,利于安全管理;
本发明生产出的铯钨青铜、铷钨青铜、铵钨青铜纳米尺寸约50-200nm,结晶度好,表现出较优的光学特性。
附图说明
图1是实例2制备的铯钨青铜的扫描电镜图。
图2是实例2制备的铯钨青铜的XRD图。
图3是实例2制备的铯钨青铜的不同波段下的消光系数图谱。
图4是实例4制备的铵钨青铜的XRD图。
图5是实例4制备的铵钨青铜的不同波段下的消光系数图谱。
具体实施方式
实例1:
步骤一:将2g二水合钨酸钠加入到30mL的去离子水中,搅拌溶解5min;然后加入酒石酸钾(按照酒石酸钾溶解后0.6mol/L的量),搅拌溶解5min;然后加入碳酸铯(按照碳酸铯溶解后0.1mol/L的量),搅拌溶解放置10min;
步骤二:将混合溶液置于50mL的聚四氟乙烯内衬中,置于水热反应釜中,使用均相反应器,控制反应温度140℃,转速设置为10r/min,反应15h,得到固体产物;
步骤三:将反应固体采用去离子水清洗三次,并采用烘箱60℃6h烘干,得到纳米铯钨青铜。
实例2:
步骤一:将1g二水合钨酸钾加入到30mL的去离子水中,搅拌溶解5min;然后加入酒石酸、酒石酸钾(按照摩尔比酒石酸:酒石酸钾=1:1,溶解后分别为0.4mol/L的量),搅拌溶解5min;然后加入氢氧化铯(按照氢氧化铯溶解后0.033mol/L的量),搅拌溶解放置10min;
步骤二:将混合溶液置于50mL的聚四氟乙烯内衬中,置于水热反应釜中,使用均相反应器,控制反应温度150℃,转速设置为10r/min,反应20h,得到固体产物;
步骤三:将反应固体采用去离子水清洗三次,并采用烘箱60℃6h烘干,得到纳米铯钨青铜。
本实例得到的铯钨青铜颗粒的扫描电镜图如图1所示,所述的铯钨青铜纳米颗粒长度在50-150nm,厚度在20-40nm,颗粒较均匀。
本实例得到的铯钨青铜的XRD图谱如图2所示,其衍射峰与Cs0.32WO3 PDF#83-1334的标准卡片衍射峰完全对应,也属于六方晶相,XRD的峰型和峰值看结晶度较好。
本实例得到的铯钨青铜的消光系数的测量是通过将铯钨青铜颗粒与KBr研磨压片,测量计算出消光系数,在波长400-1000nm出现波谷,也就是可见区域光学吸收效果差;在波长1150-3000nm处出现波峰,该区域质量消光系数超过0.8m2/g,也就是说近红外、中红外部分区域有很强的吸收效果,其中在1800nm处,质量消光系数可达1.14m2/g。随着波长的继续提高,质量消光系数逐渐下降。这一系列的光学性质可以使其应用在具有透光性良好保温涂层。
实例3:
步骤一:将1g二水合钨酸钠和1g二水合钨酸钾加入到25mL的去离子水中,搅拌溶解5min;然后加入酒石酸(溶解后分别为0.5mol/L的量),搅拌溶解5min;然后加入氯化铵(按照氯化铵溶解后0.1mol/L的量),搅拌溶解放置10min;
步骤二:将混合溶液置于50mL的聚四氟乙烯内衬中,置于水热反应釜中,使用均相反应器,控制反应温度160℃,转速设置为10r/min,反应24h,得到固体产物;
步骤三:将反应固体采用去离子水清洗三次,并采用烘箱60℃6h烘干,得到纳米铵钨青铜。
实例4:
步骤一:将1g二水合钨酸钠和1g二水合钨酸钾加入到25mL的去离子水中,搅拌溶解5min;然后加入酒石酸(溶解后分别为0.5mol/L的量),搅拌溶解5min;然后加入氯化铵(按照氯化铵溶解后0.1mol/L的量),搅拌溶解放置10min;
步骤二:将混合溶液置于50mL的聚四氟乙烯内衬中,置于水热反应釜中,使用均相反应器,控制反应温度160℃,转速设置为10r/min,反应24h,得到固体产物;
步骤三:将反应固体采用去离子水清洗三次,并采用烘箱60℃6h烘干,得到纳米铵钨青铜。
本实例得到的铵钨青铜的XRD图谱如图4所示,其衍射峰与(NH4)0.33WO3 PDF#42-0452的标准卡片衍射峰完全对应,也属于六方晶相,XRD的峰型和峰值看结晶度较好。
本实例得到的铵钨青铜的消光系数的测量是通过将铵钨青铜颗粒与KBr研磨压片,测量计算出消光系数,在波长400-1000nm出现波谷,也就是可见区域光学吸收效果差,但其数值在400-930nm处的消光系数高于同波段铯钨青铜的消光系数。在波长1150-3000nm处出现波峰,也就是说近红外、中红外部分区域有很强的吸收效果,该波段消光系数低于同波段铯钨青铜消光系数值,其中在在1880nm处,质量消光系数可达0.88m2/g。随着波长的继续提高,质量消光系数逐渐下降。
Claims (4)
1.一种制备钨青铜纳米材料的方法,包括以下步骤:
1)将1g二水合钨酸钾加入到30mL的去离子水中,搅拌溶解;然后按照摩尔比酒石酸:酒石酸钾=1:1,溶解后浓度分别为0.4mol/L的量加入酒石酸和酒石酸钾,搅拌溶解;
然后按照氢氧化铯溶解后0.033mol/L的量加入氢氧化铯,搅拌溶解,并充分混合;
2)将步骤1)得到的混合溶液置于水热反应釜中,使用均相反应器,控制反应温度150℃,反应12~24h,得到固体产物;
3)将固体产物采用去离子水清洗多次,烘干,得到钨青铜纳米材料。
2.如权利要求1所述的方法,其特征在于,所述钨青铜纳米材料的分子式为MxWO3,其中0<x<1,M代表碱金属铯。
3.如权利要求1所述的方法,其特征在于,步骤1)每种物质溶解在水中的间隔时间为5~10min。
4.如权利要求1所述的方法,其特征在于,步骤3)中采用烘箱60℃进行烘干。
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