CN102658121A - Catalyst Bi2O3/Bi2MoO6 for photodegradation of organic matters and method for preparing the same - Google Patents

Catalyst Bi2O3/Bi2MoO6 for photodegradation of organic matters and method for preparing the same Download PDF

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CN102658121A
CN102658121A CN2012100315445A CN201210031544A CN102658121A CN 102658121 A CN102658121 A CN 102658121A CN 2012100315445 A CN2012100315445 A CN 2012100315445A CN 201210031544 A CN201210031544 A CN 201210031544A CN 102658121 A CN102658121 A CN 102658121A
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catalyst
moo
bismuth
solution
bi2moo6
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邹建平
张龙珠
林国涛
林方程
马俊
雷斯亮
王玉华
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Nanchang Hangkong University
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    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

A catalyst Bi2O3/Bi2MoO6 for photodegradation of organic matters is synthesized by a one-step hydrothermal method. The catalyst is composed of bismuth oxide (Bi2O3) and bismuth molybdenum oxide (Bi2MoO6), wherein the mole ratio of bismuth oxide and bismuth molybdenum oxide is 20%. With the visible light induction, 0.1 gram of the catalyst can completely degrade 100 milliliters of Rhodamine B of 10-5 mol/liter in 80 minutes. The advantages are that: 1. the catalyst is directly synthesized by the one-step hydrothermal method which is simple in operation, low in production cost, high in synthesis yield and purity, and good in repeatability, and suitable for magnified production; 2. the catalyst has a stable heat stability and a strong resistance to acids and alkalis; 3. the catalyst prepared has a better effect on photocatalytic degradation of organic matters than that of single bismuth molybdenum oxide (Bi2MoO6) or single bismuth oxide (Bi2O3) or Bi2O3/Bi2MoO6 heterojunction with other load ratios.

Description

A kind of light degradation catalytic organism agent Bi 2O 3/ Bi 2MoO 6And preparation method thereof;
Technical field
The present invention relates to a kind of light degradation catalytic organism agent Bi 2O 3/ Bi 2MoO 6And preparation method thereof.
Background technology
Along with the live raising of life of the development of society and people, industrial wastewater and sanitary sewage account for the pith of environmental pollution, and becoming people must not irrespective major issue.1972, Fujishima and Honda adopted TiO 2Electrode, decomposition water under the irradiation of light indicates the beginning of photocatalysis New Times.Subsequently, Carey etc. uses UV-irradiation TiO 2Effective dechlorination reaction takes place in the aqueous solution such as the Polychlorinated biphenyls of the existence of photochemical catalyst, chloralkane, and this makes photocatalysis to degrade organic matter become possibility.
In nearest 30 years, titanium dioxide is the focuses of people at photocatalysis to degrade organic matter always, but since its band-gap energy too big (＞3.2eV), can only make a response to a spot of ultraviolet light in the sunshine, and can not well absorb visible light.In order more to utilize visible light, the less photocatalysis of band-gap energy subsequently is in the news in succession, like bismuth oxide, bismuth tungstate and bismuth molybdate etc.With respect to bismuth oxide and bismuth tungstate, bismuth molybdate is the most promising photochemical catalyst, and this is because the band-gap energy of bismuth molybdate is about 2.5eV, is minimum among the three, helps absorbing the bigger light of visible light medium wavelength, the more efficient use visible light.
Summary of the invention
The object of the present invention is to provide a kind of light degradation catalytic organism agent Bi 2O 3/ Bi 2MoO 6And preparation method thereof, for organic catalytic degradation provides a kind of material, material of the present invention is to adopt Hydrothermal Preparation, and it is simple to operate, low production cost, productive rate are higher, and its photocatalytic degradation speed is high, is fit to the requirement that extension is produced.
The present invention realizes like this, it is characterized in that catalyst is by bismuth oxide (Bi 2O 3) and bismuth molybdate (Bi 2MoO 6) form, wherein bismuth oxide is 20% catalytic effect the best of bismuth molybdate molal quantity, its expression formula is 20%Bi 2O 3/ Bi 2MoO 6, catalyst of the present invention is synthetic through one step hydro thermal method.Under the inducing of visible light, the catalyst of 0.1 gram can be 10 with 100 ml concns -5The rhodamine B of mol is degraded fully in 80 minutes.
A kind of new type light degradation of organic substances catalyst B i 2O 3/ Bi 2MoO 6And preparation method thereof the preparation method be: earlier with the bismuth nitrate (Bi (NO of 6 mMs (2.9105 gram) 3) 35H 2O) be uniformly dispersed in 15 ml deionized water, stirring obtains A solution.Then with the ammonium molybdate ((NH of 0.357 mM (0.4414 gram) 4) 6Mo 7O 244H 2O) be dissolved in 10 ml deionized water, be stirred to dissolving fully, obtain solution B.Then B solution is slowly fallen as among the A; Stirring at normal temperature 30 minutes adds the sodium hydroxide solution of 5 mol, with the pH value modulation 1.0 of solution; Above-mentioned solution is packed in 100 milliliters the agitated reactor of polytetrafluoroethylene (PTFE), put into 150 ℃ Muffle furnace calcining 5 hours then.Sample after the calcining is carried out putting into 300 ℃ of calcinings of Muffle furnace 5 hours after multiple times of filtration, the washing, obtain the target catalyst.
Advantage of the present invention is: 1, material preparation of the present invention is to adopt hydro-thermal method, and it is simple to operate, low production cost, productive rate are higher, and the also very high and good reproducibility of purity is fit to the requirement that extension is produced; 2, material Heat stability is good of the present invention, and acidproof, alkali resistance is strong; 3, the resulting catalyst of the present invention has the effect of photocatalytic degradation rhodamine B preferably.
Description of drawings
Fig. 1 is the Bi of catalyst of the present invention and single bismuth molybdate, bismuth oxide and other ratio loads 2O 3/ Bi 2MoO 6The X-ray powder diffraction comparison diagram of hetero-junctions catalyst.
Fig. 2 is the Bi of catalyst of the present invention and single bismuth molybdate, bismuth oxide and other ratio loads 2O 3/ Bi 2MoO 6(a is Bi to hetero-junctions catalyst ultraviolet-visible diffuse reflection comparison diagram among the figure 2MoO 6, b is 5% Bi 2O 3/ Bi 2MoO 6, c is 10% Bi 2O 3/ Bi 2MoO 6, d is 20% Bi 2O 3/ Bi 2MoO 6, e is 30% Bi 2O 3/ Bi 2MoO 6, f is Bi 2O 3).
Fig. 3 is the Bi of catalyst of the present invention and single bismuth molybdate, bismuth oxide and other ratio loads 2O 3/ Bi 2MoO 6(a is Bi to the comparison diagram of hetero-junctions catalyst light degradation effect under visible light-inducing among the figure 2MoO 6, b is 5% Bi 2O 3/ Bi 2MoO 6, c is 10% Bi 2O 3/ Bi 2MoO 6, d is 20% Bi 2O 3/ Bi 2MoO 6, e is 30% Bi 2O 3/ Bi 2MoO 6, f is 50% Bi 2O 3/ Bi 2MoO 6, g is Bi 2O 3).
The specific embodiment
Synthesizing of catalyst material of the present invention:
Elder generation is with the bismuth nitrate (Bi (NO of 6 mMs (2.9105 gram) 3) 35H 2O) be uniformly dispersed in 15 ml deionized water, stirring obtains A solution.Then with the ammonium molybdate ((NH of 0.357 mM (0.4414 gram) 4) 6Mo 7O 244H 2O) be dissolved in 10 ml deionized water, be stirred to dissolving fully, obtain solution B.Then B solution is slowly fallen as among the A; Stirring at normal temperature 30 minutes adds the sodium hydroxide solution of 5 mol, with the pH value modulation 1.0 of solution; Above-mentioned solution is packed in 100 milliliters the agitated reactor of polytetrafluoroethylene (PTFE), put into 150 ℃ Muffle furnace calcining 5 hours then.Sample after the calcining is carried out putting into 300 ℃ of calcinings of Muffle furnace 5 hours after multiple times of filtration, the washing, obtain the target catalyst.
Like Fig. 1, Fig. 2, shown in Figure 3, through the X-ray powder diffraction test shows, the bismuth molybdate (Bi of the laminated perovskite structure of catalyst of the present invention and classics 2MoO 6) have identical space structure, and bismuth oxide (Bi does not appear 2O 3) and other assorted peak.Elementary analysis shows bismuth oxide (Bi 2O 3) be bismuth molybdate (Bi 2MoO 6) 20% (mol ratio) of molal quantity.Do not find the peak of tangible bismuth oxide in addition in the Raman spectrum test shows in its spectrogram.Therefore combining the provable catalyst material of the present invention of above test is to be that 20% bismuth oxide loads on bismuth molybdate (Bi by mol ratio 2MoO 6) the heterojunction structure new material that forms.As can beappreciated from fig. 2, the band gap width of all photochemical catalysts (Eg value) all is positioned at pure bismuth molybdate (Bi 2MoO 6) and bismuth oxide between, and along with the band gap width that increases catalyst of bismuth oxide content presents orderly variation, the band-gap energy of photochemical catalyst of the present invention is 2.65 eV.Under the condition of visible light, 0.1 the gram catalyst can with 100 milliliters 10 -5The rhodamine B of mol in 80 minutes fully the degraded, compare pure bismuth molybdate and bismuth oxide under same experimental conditions in 80 minutes the degradation rate of rhodamine B only reach 38% and 45% respectively.We are to the Bi of other ratio loads in addition 2O 3/ Bi 2MoO 6The organic matter light degradation effect of hetero-junctions catalyst and catalyst of the present invention compares, like load Bi 2O 3Be Bi 2MoO 6Molar percentage be 5% hetero-junctions, expression formula is 5%Bi 2O 3/ Bi 2MoO 6, under the same conditions, this hetero-junctions catalyst only reaches 82% to the degradation rate of rhodamine B in 80 minutes.According to load Bi 2O 3Mole different, simultaneously to load Bi 2O 3Be Bi 2MoO 6Molar percentage be that (expression formula is 10%Bi for 10% hetero-junctions 2O 3/ Bi 2MoO 6), load Bi 2O 3Be Bi 2MoO 6Molar percentage be that (expression formula is 30%Bi for 30% hetero-junctions 2O 3/ Bi 2MoO 6) and load Bi 2O 3Be Bi 2MoO 6Molar percentage be that (expression formula is 50%Bi for 50% hetero-junctions 2O 3/ Bi 2MoO 6) all having carried out the light degradation experiment test, the result is illustrated under the same experimental conditions, and their degradation rate to rhodamine B is respectively 96%, 96% and 92% in 80 minutes.So catalyst 20%Bi of the present invention 2O 3/ Bi 2MoO 6Effect with best photocatalytic degradation rhodamine B.Preparation of catalysts of the present invention is to adopt one step hydro thermal method, and it is simple to operate, low production cost, synthetic productive rate are higher, and the also very high and good reproducibility of purity is fit to the requirement that extension is produced; Material Heat stability is good of the present invention, and the various bronsted lowry acids and bases bronsted lowries of ability; The resulting material of the present invention has photocatalysis to degrade organic matter effect preferably, for the light degradation organic pollution provides the new material source.

Claims (3)

1. light degradation catalytic organism agent Bi 2O 3/ Bi 2MoO 6, it is characterized in that by bismuth oxide (Bi 2O 3) and bismuth molybdate (Bi 2MoO 6) form, wherein bismuth oxide and bismuth molybdate mol ratio are 20%, expression formula is 20%Bi 2O 3/ Bi 2MoO 6
2. described a kind of light degradation catalytic organism agent Bi of claim 1 2O 3/ Bi 2MoO 6The preparation method, it is characterized in that: earlier with the bismuth nitrate (Bi (NO of 6 mMs (2.9105 gram) 3) 35H 2O) be uniformly dispersed in 15 ml deionized water, stirring obtains A solution, then with the ammonium molybdate ((NH of 0.357 mM (0.4414 gram) 4) 6Mo 7O 244H 2O) be dissolved in 10 ml deionized water, be stirred to dissolving fully, obtain solution B; Then B solution is slowly fallen as among the A, stirring at normal temperature 30 minutes adds the sodium hydroxide solution of 5 mol; With the pH value of solution modulation 1.0, above-mentioned solution is packed in 100 milliliters the agitated reactor of polytetrafluoroethylene (PTFE), put into 150 ℃ Muffle furnace calcining 5 hours then; Sample after the calcining is carried out putting into 300 ℃ of calcinings of Muffle furnace 5 hours after multiple times of filtration, the washing, obtain the target catalyst.
3. described a kind of light degradation catalytic organism agent Bi of claim 1 2O 3/ Bi 2MoO 6, it is characterized in that under the inducing of visible light this catalyst has good degradation effect to rhodamine B.
CN2012100315445A 2012-02-14 2012-02-14 Catalyst Bi2O3/Bi2MoO6 for photodegradation of organic matters and method for preparing the same Pending CN102658121A (en)

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CN103447024A (en) * 2013-09-10 2013-12-18 重庆大学 Preparation method of bismuth-based strontium magnetic photo-catalyst, and bismuth-based strontium magnetic photo-catalyst
CN103848484A (en) * 2014-03-07 2014-06-11 南京大学 Device and method for degrading antibiotic wastewater by utilizing low temperature plasma in coordination with bismuth molybdate catalyst
CN104096558A (en) * 2014-07-11 2014-10-15 中国人民解放军空军工程大学 Bi2MoO6-ZnO composite photocatalyst and preparation method thereof
CN105381808A (en) * 2015-10-20 2016-03-09 西南科技大学 Mo/S/BiOCl composite near normal temperature degradation catalyst and preparation method therefor and application method thereof
CN106799223A (en) * 2016-12-29 2017-06-06 广州凯耀资产管理有限公司 A kind of synthetic method of Bi systems compound semiconductor photocatalytic material
CN108355646A (en) * 2017-12-29 2018-08-03 盐城工学院 A kind of preparation method of bismuth based compound nano-photocatalyst
CN109046395A (en) * 2018-08-30 2018-12-21 南通纺织丝绸产业技术研究院 A kind of telluric acid bismuth/bismuth oxide heterojunction material, preparation method and applications
CN109939673A (en) * 2019-03-26 2019-06-28 延安大学 A kind of ultra-thin bismuth oxide/bismuth molybdate heterojunction photocatalysis material and preparation method thereof
CN110498487A (en) * 2019-09-06 2019-11-26 西安建筑科技大学 A kind of preparation method, product and its application of the modified bismuth molybdate optoelectronic pole of cetyl trimethylammonium bromide
CN110508272A (en) * 2018-05-22 2019-11-29 南京理工大学 The preparation method of the compound zero gap heterojunction photocatalyst of bismuth oxide/bismuth molybdate
CN110841626A (en) * 2019-10-24 2020-02-28 江苏大学 Tungsten oxide/bismuth oxide net-sheet composite material and preparation method and application thereof
WO2020042127A1 (en) * 2018-08-30 2020-03-05 南通纺织丝绸产业技术研究院 Bismuth tellurate/bismuth oxide heterojunction material, preparation method therefor and application thereof

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CN103447024A (en) * 2013-09-10 2013-12-18 重庆大学 Preparation method of bismuth-based strontium magnetic photo-catalyst, and bismuth-based strontium magnetic photo-catalyst
CN103447024B (en) * 2013-09-10 2016-06-08 重庆大学 The preparation method of a kind of bismuthino strontium magnetic photocatalyst and bismuthino strontium magnetic photocatalyst thereof
CN103848484A (en) * 2014-03-07 2014-06-11 南京大学 Device and method for degrading antibiotic wastewater by utilizing low temperature plasma in coordination with bismuth molybdate catalyst
CN103848484B (en) * 2014-03-07 2016-08-31 南京大学 A kind of device and method of low-temperature plasma synergistic bismuth molybdate catalysts degraded antibiotic waste water
CN104096558A (en) * 2014-07-11 2014-10-15 中国人民解放军空军工程大学 Bi2MoO6-ZnO composite photocatalyst and preparation method thereof
CN105381808A (en) * 2015-10-20 2016-03-09 西南科技大学 Mo/S/BiOCl composite near normal temperature degradation catalyst and preparation method therefor and application method thereof
CN105381808B (en) * 2015-10-20 2017-08-25 西南科技大学 A kind of Mo/S/BiOCl is combined near ambient temperature degradation catalyst and its preparation and application method
CN106799223A (en) * 2016-12-29 2017-06-06 广州凯耀资产管理有限公司 A kind of synthetic method of Bi systems compound semiconductor photocatalytic material
CN108355646A (en) * 2017-12-29 2018-08-03 盐城工学院 A kind of preparation method of bismuth based compound nano-photocatalyst
CN108355646B (en) * 2017-12-29 2021-04-06 盐城工学院 Preparation method of bismuth compound nano photocatalyst
CN110508272A (en) * 2018-05-22 2019-11-29 南京理工大学 The preparation method of the compound zero gap heterojunction photocatalyst of bismuth oxide/bismuth molybdate
CN110508272B (en) * 2018-05-22 2022-04-19 南京理工大学 Preparation method of bismuth oxide/bismuth molybdate composite zero-gap heterojunction photocatalyst
CN109046395A (en) * 2018-08-30 2018-12-21 南通纺织丝绸产业技术研究院 A kind of telluric acid bismuth/bismuth oxide heterojunction material, preparation method and applications
WO2020042127A1 (en) * 2018-08-30 2020-03-05 南通纺织丝绸产业技术研究院 Bismuth tellurate/bismuth oxide heterojunction material, preparation method therefor and application thereof
CN109046395B (en) * 2018-08-30 2023-08-11 南通纺织丝绸产业技术研究院 Bismuth tellurate/bismuth oxide heterojunction material, preparation method and application thereof
CN109939673A (en) * 2019-03-26 2019-06-28 延安大学 A kind of ultra-thin bismuth oxide/bismuth molybdate heterojunction photocatalysis material and preparation method thereof
CN109939673B (en) * 2019-03-26 2020-08-18 延安大学 Ultrathin bismuth oxide/bismuth molybdate heterojunction photocatalytic material and preparation method thereof
CN110498487A (en) * 2019-09-06 2019-11-26 西安建筑科技大学 A kind of preparation method, product and its application of the modified bismuth molybdate optoelectronic pole of cetyl trimethylammonium bromide
CN110841626A (en) * 2019-10-24 2020-02-28 江苏大学 Tungsten oxide/bismuth oxide net-sheet composite material and preparation method and application thereof

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