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CdMoO4 microsphere catalyst with photocatalytic performance as well as preparation method and application of CdMoO4 microsphere catalyst

A catalyst and photocatalysis technology, applied in the field of photocatalysis, can solve the problems of limited large-scale application and low quantum efficiency, and achieve the effects of stable structure, simple preparation method and strong dispersibility.

Active Publication Date: 2021-07-20
JILIN INST OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, TiO 2 Due to its inherent wide bandgap, it can only absorb ultraviolet light and has low quantum efficiency due to high recombination of photoexcited electrons and holes
These two shortcomings greatly limit its large-scale application in practice, therefore, it is imminent to develop a new photocatalyst

Method used

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  • CdMoO4 microsphere catalyst with photocatalytic performance as well as preparation method and application of CdMoO4 microsphere catalyst
  • CdMoO4 microsphere catalyst with photocatalytic performance as well as preparation method and application of CdMoO4 microsphere catalyst
  • CdMoO4 microsphere catalyst with photocatalytic performance as well as preparation method and application of CdMoO4 microsphere catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This example provides a CdMoO with photocatalytic properties 4 Microsphere catalyst, its preparation method, comprises the following steps:

[0024] (1) Add 500mg of polyacrylic acid, 350μL of ammonia water and 100mg of ammonium molybdate into the container, stir and react at room temperature for 2 hours, after stirring and mixing evenly, slowly add 300mL of isopropanol into the solution in the container, and then Add 250 mg of cadmium chloride 2.5 hydrate to the solution, and stir and react at room temperature for 10 h;

[0025] (2) Centrifuge the obtained turbid solution, dry the obtained product in an oven for 6 hours, place it in a muffle furnace, control the temperature rise to 400°C at a heating rate of 5°C / min, and calcinate at 400°C for 2h to obtain CaO 4 microsphere catalyst. The CdMoO 4 The particle size of the microsphere catalyst is 100-150 nm, which is a microsphere with stable structure, good dispersibility and uniform particle size.

Embodiment 2

[0027] This example provides a CdMoO with photocatalytic properties 4 Microsphere catalyst, its preparation method, comprises the following steps:

[0028] (1) Add 680mg of polyacrylic acid, 400μL of ammonia water and 200mg of ammonium molybdate into the container, stir and react at room temperature for 2.5h, after stirring and mixing evenly, slowly add 340mL of isopropanol into the solution in the container, after the reaction is complete Then add 350 mg cadmium chloride 2.5 hydrate to the solution, and stir and react at room temperature for 11 h;

[0029] (2) Centrifuge the obtained turbid solution, dry the obtained product in an oven for 8 hours, place it in a muffle furnace, control the temperature to 430°C at a rate of 5°C / min, and calcinate at 430°C for 3h to obtain CaO 4 microsphere catalyst. The CdMoO 4 The particle size of the microsphere catalyst is 100-150 nm, which is a microsphere with stable structure, good dispersibility and uniform particle size.

Embodiment 3

[0031] This example provides a CdMoO with photocatalytic properties 4 Microsphere catalyst, its preparation method, comprises the following steps:

[0032] (1) Add 900mg of polyacrylic acid, 450μL of ammonia water and 320mg of ammonium molybdate into the container, stir and react at room temperature for 4 hours, stir and mix evenly, slowly add 500mL of isopropanol to the solution in the container, and then Add 450 mg of cadmium chloride 2.5 hydrate to the solution, and stir for 12 hours at room temperature;

[0033] (2) Centrifuge the obtained turbid solution, dry the obtained product in an oven for 10 hours, place it in a muffle furnace, control the temperature rise to 500°C at a heating rate of 5°C / min, and calcinate at 500°C for 4h to obtain CaO 4 microsphere catalyst. The CdMoO 4 The particle size of the microsphere catalyst is 100-150 nm, which is a microsphere with stable structure, good dispersibility and uniform particle size.

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Abstract

The invention is applicable to the technical field of photocatalysis, and provides a CdMoO4 microsphere catalyst with photocatalytic performance as well as a preparation method and application of the CdMoO4 microsphere catalyst. The preparation method of the CdMoO4 microsphere catalyst with the photocatalytic performance comprises the following steps: uniformly mixing polyacrylic acid, ammonia water and ammonium molybdate, slowly adding isopropanol, then adding cadmium chloride, and carrying out centrifugation, drying and calcination treatment after complete reaction to obtain the CdMoO4 microsphere catalyst with the photocatalytic performance. The CdMoO4 microsphere catalyst disclosed by the invention has the characteristics of stable structure, strong dispersity and strong adsorption capacity, and is beneficial to smooth transmission of electrons; the preparation method is simple and low in cost, the prepared CdMoO4 microsphere catalyst has excellent performance of photocatalytic decomposition of water for hydrogen production under visible light irradiation, the hydrogen production performance reaches up to 7096.02 [mu] mol g <-1 > h <-1 >, and antibiotics such as oxytetracycline (OTC), norfloxacin (NFX), tetracycline hydrochloride (TCH), reactive red 2 (RR2) and levofloxacin (LEV) can be effectively degraded.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and in particular relates to a CdMoO4 microsphere catalyst with photocatalysis performance and a preparation method and application thereof. Background technique [0002] Water pollution by antibiotics has become an environmental problem that seriously threatens the safety of human public health. Antibiotics are widely used in agriculture and antibiotic-preventive aquaculture, and currently, organic pollutants are attracting a lot of public attention due to their toxicity and resistance to degradation causing increasing environmental pollution. [0003] Photocatalytic technology is a basic nanotechnology born in the 1970s. A typical natural photocatalyst is our common chlorophyll, which promotes the synthesis of carbon dioxide and hydration in the air into oxygen and carbohydrates in the photosynthesis of plants. Generally speaking, nano-photocatalyst technology is a nano-bionic technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/28B01J35/02B01J35/08C01B3/04C01G39/00C02F1/30C02F101/30C02F101/38B01J35/00
CPCB01J23/28C01B3/042C02F1/30C01G39/00C01B2203/0277C02F2305/10C02F2101/30C02F2101/38B01J35/51B01J35/40B01J35/39Y02E60/36
Inventor 陈哲高姝研陈峰蒋迪
Owner JILIN INST OF CHEM TECH
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