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A high-efficiency surface plasma visible-light-induced photocatalyst composite material (Ag@AgCl)-Ni/RGO having magnetic responsibility

A surface plasmon, composite material technology, applied in the field of ionic visible light catalyst composite material-Ni/RGO, can solve the problems of affecting catalytic performance, low electrical conductivity, limiting charge migration, etc., to improve catalytic performance and good magnetic responsiveness. , the effect of excellent electrical conductivity

Inactive Publication Date: 2017-04-19
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Fe 3 o 4 As a class of semi-metallic materials, its conductivity is much lower than that of metal conductors
In the photocatalytic process, low electrical conductivity will limit the migration of charges, thereby affecting the catalytic performance

Method used

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  • A high-efficiency surface plasma visible-light-induced photocatalyst composite material (Ag@AgCl)-Ni/RGO having magnetic responsibility
  • A high-efficiency surface plasma visible-light-induced photocatalyst composite material (Ag@AgCl)-Ni/RGO having magnetic responsibility
  • A high-efficiency surface plasma visible-light-induced photocatalyst composite material (Ag@AgCl)-Ni/RGO having magnetic responsibility

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Preparation of visible light catalyst composite (Ag@AgCl)-Ni / RGO

[0024] Weigh successively 0.05g graphite oxide (GO), 0.118g NiCl 2 ·6H 2 O, ultrasonic dispersion in 70mL ethylene glycol, ultrasonic time is 60min. Then, with the assistance of magnetic stirring, 10 mL of hydrazine hydrate (N 2 h 4 ·H 2 O, 80wt%) solution. After continuing to stir for 15 min, the mixture was transferred to a 100 mL reactor and reacted at 200°C for 45 min. After the solvothermal reaction was completed, the intermediate product was cooled at room temperature and washed repeatedly with ethanol and water to obtain a Ni / RGO composite material.

[0025] In a dark room environment, the intermediate product Ni / RGO was dispersed in 40mL containing 0.17g AgNO 3 After mechanical stirring for 30 min, 10 mL of an aqueous solution containing 0.059 g of NaCl was slowly added dropwise. After continuing to stir for 12 h in a dark room environment, irradiate with a 500W xenon lamp for ...

Embodiment 2

[0027] Example 2: Preparation of visible light catalyst composite (Ag@AgCl)-Ni / RGO

[0028] Weigh successively 0.05g graphite oxide (GO), 0.118g NiCl 2 ·6H 2 O, ultrasonic dispersion in 60mL ethylene glycol, ultrasonic time is 90min. Then, with the assistance of magnetic stirring, 10 mL of hydrazine hydrate ((N 2 h 4 ·H 2 O, 80wt%)) solution. After continuing to stir for 15 min, the mixture was transferred to a 100 mL reactor and reacted at 200°C for 60 min. After the solvothermal reaction was completed, the intermediate product was cooled at room temperature and washed repeatedly with ethanol and water to obtain a Ni / RGO composite material.

[0029] In a dark room environment, the intermediate product Ni / RGO was dispersed in 40mL containing 0.17g AgNO 3After mechanical stirring for 30 min, 10 mL of an aqueous solution containing 0.059 g of NaCl was slowly added dropwise. After continuing to stir for 12 h in a dark room environment, irradiate with a 500W xenon lamp for...

Embodiment 3

[0030] Example 3: Preparation of visible light catalyst composite (Ag@AgCl)-Ni / RGO

[0031] Weigh successively 0.05g graphite oxide (GO), 0.236g NiCl 2 ·6H 2 O, ultrasonic dispersion in 70mL ethylene glycol, ultrasonic time is 120min. Then, with the assistance of magnetic stirring, 10 mL of hydrazine hydrate (N 2 h 4 ·H 2 O, 80wt%) solution. After continuing to stir for 15 min, the mixture was transferred to a 100 mL reactor and reacted at 200°C for 45 min. After the solvothermal reaction was completed, the intermediate product was cooled at room temperature and washed repeatedly with ethanol and water to obtain a Ni / RGO composite material.

[0032] In a dark room environment, the intermediate product Ni / RGO was dispersed in 40mL containing 0.17g AgNO 3 After mechanical stirring for 60 min, 10 mL of an aqueous solution containing 0.059 g of NaCl was slowly added dropwise. After continuing to stir for 12 h in a dark room environment, irradiate with a 500W xenon lamp for...

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Abstract

A high-efficiency surface plasma visible-light-induced photocatalyst composite material (Ag@AgCl)-Ni / RGO having magnetic responsibility is disclosed. Firstly, a Ni / RGO composite material is prepared through a solvothermal method and by adopting graphite oxide and nickel chloride hexahydrate as precursors and adopting glycol as a solvent; then AgCl is generated on the surface of the Ni / RGO through a precipitation-deposition method and through adopting AgNO3 as a Ag<+> source and adopting NaCl as a Cl<-> source; and the AgCl surface is partially reduced into Ag through illumination to finally form the (Ag@AgCl)-Ni / RGO composite material. Under illumination by an xenon lamp having a power of 500 W, neutral red, eosine, methylene blue, methyl orange, rhodamine B, and other types of dye can be degraded in 10 min, 20 min, 35 min, 40 min and 40 min respectively through adopting the (Ag@AgCl)-Ni / RGO as a catalyst, and the degradation rates are all higher than 95%. The visible-light-induced photocatalyst material has excellent visible light catalytic degradation effects and is suitable for catalytic degradation of organic pollutants under visible light.

Description

technical field [0001] The invention relates to a high-efficiency surface plasmon visible light catalyst composite material (Ag@AgCl)-Ni / RGO with magnetic responsiveness, and belongs to the technical field of material preparation and organic pollutant degradation treatment. Background technique [0002] In recent years, with the rapid development of textile, printing and dyeing, petrochemical and other industries, the discharge of various organic wastewater containing a large amount of refractory, large chroma, and high COD (chemical oxygen demand) value has increased correspondingly, threatening human health and survival of aquatic organisms. In this case, nano-semiconductor photocatalysis technology has attracted the attention of a large number of researchers. Among them, the surface plasmon photocatalytic material is a metal-semiconductor composite photocatalytic material based on the local surface plasmon resonance effect of noble metals. This material fully combines th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/10A62D3/17A62D101/26A62D101/28
Inventor 姜炜钟素婷张娜田仁兵陆月张宁梁倩倩
Owner NANJING UNIV OF SCI & TECH
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