CN108273513A - A kind of cuprous oxide is modified the preparation of wolframic acid antimony composite photo-catalyst - Google Patents

A kind of cuprous oxide is modified the preparation of wolframic acid antimony composite photo-catalyst Download PDF

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CN108273513A
CN108273513A CN201711484514.9A CN201711484514A CN108273513A CN 108273513 A CN108273513 A CN 108273513A CN 201711484514 A CN201711484514 A CN 201711484514A CN 108273513 A CN108273513 A CN 108273513A
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wolframic acid
acid antimony
modified
composite photo
cuprous oxide
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张松利
梁智萍
关创
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Zhenjiang Powerise Special Alloy Technology Development Co Ltd
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Zhenjiang Powerise Special Alloy Technology Development Co Ltd
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    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85Chromium, molybdenum or tungsten
    • B01J23/888Tungsten
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002Mixed oxides other than spinels, e.g. perovskite
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/20Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
    • B01J35/23Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39Photocatalytic properties
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    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • B01J37/10Heat treatment in the presence of water, e.g. steam
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Abstract

The preparation method for being modified wolframic acid antimony composite photo-catalyst the invention discloses a kind of cuprous oxide and its application in photocatalytic pollutant degradation, belong to material preparation and light-catalysed technical field.The characteristics of catalyst, has:Laminated structure with 2 dimensions, is combined by cuprous nano particle and wolframic acid antimony nanometer sheet.During preparing photochemical catalyst, using hydro-thermal method simple for process, synthesizes cuprous oxide and be modified wolframic acid antimony composite photo-catalyst.Under the action of cuprous oxide, cuprous oxide is modified wolframic acid antimony composite photo-catalyst and shows good visible light catalytic performance, promotes the research of novel semi-conductor wolframic acid antimony photochemical catalyst.

Description

A kind of cuprous oxide is modified the preparation of wolframic acid antimony composite photo-catalyst
Technical field
The invention belongs to material preparation and photocatalysis technology fields, and it is compound to relate generally to a kind of cuprous oxide modification wolframic acid antimony The preparation of photochemical catalyst and its research of photocatalytic activity.
Background technology
With industrialized development, people's increasingly concern for the environment pollution problem.Traditional environmental pollution substance treating method The requirement of people is can not meet.A kind of cleaning is searched out, efficiently, energy-saving and environment-friendly sewage water treatment method is ground at people The hot spot direction studied carefully.
TiO was found for the first time from 19722Since photocatalytic activity, the research of photocatalysis technology is always investigation of materials Hot spot direction.Photocatalysis technology by its energy conservation and environmental protection, non-secondary pollution the advantages that for sewage processing provide one it is non- Often good solution route.Conductor photocatalysis material can utilize in inexhaustible, nexhaustible solar energy processing air or Poisonous and harmful substance in person's water improves environment, achievees the purpose that utilization of resources ecology.Currently, a variety of different semiconductor lights Photocatalyst material is widely studied, such as bismuth tungstate, wolframic acid caesium etc..But wolframic acid antimony is extensive by its material source, price is low It is honest and clean, as one of the hot spot material of photocatalysis research the advantages that no biotoxicity.
But there is also some defects for wolframic acid antimony photochemical catalyst, for example, its visible light utilization efficiency is low, and Gao get Guang Raw electron-hole recombination rate, these all hinder its further application.In this background, wolframic acid antimony how is improved Photocatalytic activity, at the Important Problems of research wolframic acid antimony photochemical catalyst.So far, it is used to improve there are many method Its photocatalytic activity, such as:Pattern control, semiconductors coupling etc..But the photocatalysis efficiency of the modified wolframic acid antimony of the above method, There are still some defects for stability.
In recent years, compound using other materials and the progress of wolframic acid antimony catalyst, the research for preparing composite photo-catalyst obtains Certain progress, obtained wolframic acid antimony composite photo-catalyst show good photocatalytic activity under the irradiation of sunlight. The present invention is compound using the low energy gap of cuprous oxide and the progress of wolframic acid antimony, forms two-dimensional microstructure, effectively improves The visible light utilization efficiency and photocatalytic activity of wolframic acid antimony.
Invention content
The purpose of the present invention is prepare the wolframic acid antimony complex light with high visible light utilization efficiency and high catalytic activity to urge Agent promotes the practical application of wolframic acid antimony.
Purpose adopts the following technical scheme that realize the present invention:
Using the narrow band gap of cuprous oxide, cuprous oxide nano-particle is grown in wolframic acid antimony on piece, prepares cuprous oxide modification Wolframic acid antimony composite photo-catalyst improves the visible light catalysis activity of wolframic acid antimony.
A kind of cuprous oxide is modified the preparation of wolframic acid antimony composite photo-catalyst, and characterization step is as follows:
(1)Weigh a certain amount of SbCl3It is dissolved in 50 mL ethylene glycol, stirs evenly;
(2)To step(1)Appropriate Na in solution2WO4﹒ 2H2O continues to stir evenly;
(3)To step(2)20 mL water are added in solution, stir evenly;
(4)The solution being stirred is transferred in autoclave and is reacted;
(5)By the sample centrifuge washing that the reaction was complete, is ground after dry and obtain wolframic acid antimony;
(6)It takes 0.15 g wolframic acid antimony to be dissolved in 30 mL water, appropriate cupric sulfate pentahydrate is added, stirs evenly;
(7)To step(6)4 mL sodium hydroxides (1.0mol/L) solution are added in solution;
(8)To step(7)A certain amount of ascorbic acid, heating stirring certain time are added in solution;
(9)By the sample centrifuge washing that the reaction was complete, is ground after dry and obtain composite photo-catalyst.
SbCl in step (1)3Quality be 0.9125g.
Na in step (2)2WO4﹒ 2H2The quality of O is 0.066g.
Reaction temperature is 180 DEG C in step (4), reaction time 20h.
Cupric sulfate pentahydrate quality is 0.5g in step (6).
Ascorbic acid quality is 1.0g in step (8).
90 DEG C of stability, reaction time 10h are heated in step (8).
Eccentric cleaning process in step (9) is first to be cleaned 4 times with ethyl alcohol, then clean 2 times with deionized water, centrifugation rate 8000rpm, time 6min.
The cuprous oxide is modified visible light catalytic of the wolframic acid antimony composite photo-catalyst for organic pollution in aqueous solution Degradation.
Target contaminant is methylene blue.
The invention has the advantages that:
1. prepared by the present invention is a kind of cuprous oxide modification wolframic acid antimony composite photo-catalyst, belong to new compound system;
2. the cuprous oxide in the present invention, which is modified wolframic acid antimony composite photo-catalyst, has good photocatalytic activity and absorption property. It degrades under the irradiation of the artificial visible light sources of 180min methylene blue dye, degradation rate reaches 80%, higher than the wolframic acid antimony studied Monomer catalytic activity.
Description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph that cuprous oxide is modified wolframic acid antimony composite photo-catalyst.
Fig. 2 is the photocatalytic degradation figure that cuprous oxide is modified wolframic acid antimony composite photo-catalyst.
Specific implementation mode
A kind of cuprous oxide is modified the preparation of wolframic acid antimony composite photo-catalyst, and characterization step is as follows:
(1)Weigh a certain amount of SbCl3It is dissolved in 50 mL ethylene glycol, stirs evenly;
(2)To step(1)Appropriate Na in solution2WO4﹒ 2H2O continues to stir evenly;
(3)To step(2)20 mL water are added in solution, stir evenly;
(4)The solution being stirred is transferred in autoclave and is reacted;
(5)By the sample centrifuge washing that the reaction was complete, is ground after dry and obtain wolframic acid antimony;
(6)It takes 0.15 g wolframic acid antimony to be dissolved in 30 mL water, appropriate cupric sulfate pentahydrate is added, stirs evenly;
(7)To step(6)4 mL sodium hydroxides (1.0mol/L) solution are added in solution;
(8)To step(7)A certain amount of ascorbic acid, heating stirring certain time are added in solution;
(9)By the sample centrifuge washing that the reaction was complete, is ground after dry and obtain composite photo-catalyst.
SbCl in step (1)3Quality be 0.9125g.
Na in step (2)2WO4﹒ 2H2The quality of O is 0.066g.
Reaction temperature is 180 DEG C in step (4), reaction time 20h.
Cupric sulfate pentahydrate quality is 0.5g in step (6).
Ascorbic acid quality is 1.0g in step (8).
90 DEG C of stability, reaction time 10h are heated in step (8).
Eccentric cleaning process in step (9) is first to be cleaned 4 times with ethyl alcohol, then clean 2 times with deionized water, centrifugation rate 8000rpm, time 6min.
The cuprous oxide is modified visible light catalytic of the wolframic acid antimony composite photo-catalyst for organic pollution in aqueous solution Degradation.
Specific embodiment prepares cuprous oxide and is modified wolframic acid antimony composite photo-catalyst below.
Case study on implementation 1
Cuprous oxide is modified the preparation of wolframic acid antimony composite photo-catalyst
Weigh SbCl30.9125g is added in 50 mL ethylene glycol, is stirred evenly, is added Na2WO4﹒ 2H2O 0.066g, are stirred It mixes uniformly;Then solution is poured into reaction kettle, is heated, heating temperature is 200 DEG C, time 20h.After the completion of reaction, centrifugation Washing, is first cleaned 4 times with ethyl alcohol, is being washed with water 2 times, centrifugal speed 8000rpm, time 6min.60 DEG C in last baking oven Dry, grinding obtains wolframic acid antimony.
It weighs 0.15 g wolframic acid antimony to be dissolved in 30 mL water, 0.5g cupric sulfate pentahydrates is added, stir evenly;Add 4 mL Sodium hydroxide (1.0mol/L) solution, is subsequently added into ascorbic acid 1.0g, 10h is stirred at 90 DEG C.By the sample that the reaction was complete Centrifuge washing grinds after dry and obtains composite photo-catalyst.
Case study on implementation 2
Cuprous oxide is modified wolframic acid antimony composite photo-catalyst rhodamine B degradation under visible light illumination
It is modified wolframic acid antimony composite photo-catalyst by cuprous oxide made from 1 method of case study on implementation and carries out rhodamine B degradation experiment.It is sub- The concentration of methyl blue solution is 1 × 10-4mol L-1;Composite material powder 50mg is taken, the above-mentioned methylene blue solutions of 100mL are placed in In, it stirs 40 minutes in darkroom, is then placed in solution in the visible light source that ultraviolet light is filtered, take 5mL within every 10 minutes Methylene blue solution measures the characteristic peaks of Methylene Blue in Solution with ultraviolet-visible spectrophotometer.
The degradation that cuprous oxide is modified wolframic acid antimony composite photo-catalyst Visible Light Induced Photocatalytic methylene blue is obtained by case study on implementation 2 Curve is shown in Fig. 2.The composite material powder that as can be seen from Figure 2 prepared by case study on implementation 1 catalytic degradation after 180 min of illumination reaches To 80% or more, high catalytic activity is shown.

Claims (8)

1. a kind of cuprous oxide is modified the preparation of wolframic acid antimony composite photo-catalyst, feature includes the following steps:
(1)Weigh a certain amount of SbCl3It is dissolved in 50 mL ethylene glycol, stirs evenly;
(2)To step(1)Appropriate Na in solution2WO4﹒ 2H2O continues to stir evenly;
(3)To step(2)20mL is added in solution, stirs evenly;
(4)The solution being stirred is transferred in autoclave and is reacted;
(5)By the sample centrifuge washing that the reaction was complete, is ground after dry and obtain wolframic acid antimony;
(6)It takes 0.15g wolframic acid antimony to be dissolved in 30 mL water, appropriate cupric sulfate pentahydrate is added, stirs evenly;
(7)To step(6)4mL sodium hydroxides (1.0mol/L) solution is added in solution;
(8)To step(7)A certain amount of ascorbic acid, heating stirring certain time are added in solution;
(9)By the sample centrifuge washing that the reaction was complete, is ground after dry and obtain composite photo-catalyst.
2. being modified the preparation of wolframic acid antimony composite photo-catalyst according to a kind of cuprous oxide of claim 1, it is characterised in that SbCl3's Quality is 0.9125g.
3. being modified the preparation of wolframic acid antimony composite photo-catalyst according to a kind of cuprous oxide of claim 1, it is characterised in that Na2WO4﹒ 2H2The quality of O is 0.066g.
4. being modified the preparation of wolframic acid antimony composite photo-catalyst according to a kind of cuprous oxide of claim 1, it is characterised in that wolframic acid antimony The reaction temperature of synthesis is 180 DEG C, reaction time 20h.
5. being modified the preparation of wolframic acid antimony composite photo-catalyst according to a kind of cuprous oxide of claim 1, it is characterised in that five water sulphur Sour copper mass is 0.5g.
6. being modified the preparation of wolframic acid antimony composite photo-catalyst according to a kind of cuprous oxide of claim 1, it is characterised in that Vitamin C Sour quality is 1.0g.
7. being modified the preparation of wolframic acid antimony composite photo-catalyst according to a kind of cuprous oxide of claim 1, it is characterised in that heating is stirred It is 90 DEG C to mix temperature, reaction time 10h.
8. being modified the preparation of wolframic acid antimony composite photo-catalyst according to a kind of cuprous oxide of claim 1, it is characterised in that oxidation is sub- Copper, which is modified wolframic acid antimony composite photo-catalyst, has two-dimensional appearance.
CN201711484514.9A 2017-12-29 2017-12-29 A kind of cuprous oxide is modified the preparation of wolframic acid antimony composite photo-catalyst Pending CN108273513A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113976138A (en) * 2021-11-29 2022-01-28 辽宁大学 Cu2O/CuWO4Acoustic catalyst, preparation method and application thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113976138A (en) * 2021-11-29 2022-01-28 辽宁大学 Cu2O/CuWO4Acoustic catalyst, preparation method and application thereof

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Application publication date: 20180713