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Au/TiO2/CFP (carbon fiber paper) ternary composite nano photocatalyst as well as preparation method and application thereof

A nano-photocatalyst, ternary composite technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve good adsorption and visible light catalytic activity.

Active Publication Date: 2015-03-11
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, current research on CFP, Au and TiO 2 The preparation of the ternary composite photocatalyst and its application in the photocatalytic degradation of volatile organic compounds have not been reported yet.

Method used

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  • Au/TiO2/CFP (carbon fiber paper) ternary composite nano photocatalyst as well as preparation method and application thereof
  • Au/TiO2/CFP (carbon fiber paper) ternary composite nano photocatalyst as well as preparation method and application thereof
  • Au/TiO2/CFP (carbon fiber paper) ternary composite nano photocatalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Add 1g carbon fiber paper to 40mL concentrated HNO 3 and concentrated H 2 SO 4 (1:3 in volume ratio), reflux at 90°C for 90min, wash with water until neutral, and dry at 80°C for 12h to obtain purified carbon fiber paper, which is ready for use;

[0038] (2) Add 0.7 g of butyl titanate to 20 mL of ethanol, and stir for 1 min to obtain a clear solution of butyl titanate;

[0039] (3) Add 0.5 g of the purified carbon fiber paper obtained in step (1) to the clear solution of butyl titanate obtained in step (2) to wet it, take it out, and dry it at 80°C for 20 minutes; The process was repeated 5 times to obtain carbon fiber paper wetted and dried by the butyl titanate solution;

[0040] (4) Add 4.0g NaOH and 0.4g D25 titanium dioxide powder into 20mL deionized water, and ultrasonically disperse for 20min to obtain a mixed suspension of NaOH and titanium dioxide;

[0041] (5) Add 0.5 g of the butyl titanate solution obtained in step (3) to the wetted and dried carbon...

Embodiment 2

[0045] (1) Add 10g carbon fiber paper to 200mL concentrated HNO 3 and concentrated H 2 SO 4 (volume ratio 1:1), reflux at 85°C for 180min, wash with water until neutral, and dry at 180°C for 3h to obtain purified carbon fiber paper for later use;

[0046] (2) Add 5 g of butyl titanate to 200 mL of ethanol, and stir for 2 min to obtain a clear solution of butyl titanate;

[0047] (3) Add 1 g of the purified carbon fiber paper obtained in step (1) to the clear solution of butyl titanate obtained in step (2) for wetting, take it out, and dry it at 180°C for 10 minutes; such a wetting-drying process Repeat 4 times to obtain carbon fiber paper wetted and dried by the butyl titanate solution;

[0048] (4) Add 5.0g NaOH and 0.4g D25 titanium dioxide powder into 100mL deionized water, and ultrasonically disperse for 60min to obtain a mixed suspension of NaOH and titanium dioxide;

[0049] (5) Add 1 g of the butyl titanate solution obtained in step (3) to the wetted and dried carbo...

Embodiment 3

[0053] (1) Add 0.5g carbon fiber paper to 4mL concentrated HNO 3 and concentrated H 2 SO 4 (1:5 in volume ratio), reflux at 95°C for 30 minutes, wash with water until neutral, and dry at 50°C for 10 hours to obtain purified carbon fiber paper for later use;

[0054] (2) Add 0.05 g of butyl titanate to 10 mL of ethanol, and stir for 10 min to obtain a clear solution of butyl titanate;

[0055] (3) Add 0.01 g of the purified carbon fiber paper obtained in step (1) to the clear solution of butyl titanate obtained in step (2) to wet it, take it out, and dry it at 50°C for 30 minutes; The process was repeated 5 times to obtain carbon fiber paper wetted and dried by the butyl titanate solution;

[0056] (4) Add 0.5g NaOH and 0.04g D25 titanium dioxide powder into 10mL deionized water, and ultrasonically disperse for 1min to obtain a mixed suspension of NaOH and titanium dioxide;

[0057] (5) Add 0.01 g of the butyl titanate solution obtained in step (3) to the wetted and dried c...

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Abstract

The invention belongs to the field of preparation and application of composite photocatalytic materials and particularly relates to an Au / TiO2 / CFP (carbon fiber paper) ternary composite nano photocatalyst as well as a preparation method and application thereof. According to the preparation method, the Au / TiO2 / CFP ternary composite nano photocatalyst is further prepared by an ultraviolet-radiation method on the basis of preparing a TiO2 / CFP binary composite photocatalyst by a soaking-hydrothermal reaction method. The Au / TiO2 / CFP ternary composite nano photocatalyst not only has relatively strong adsorption performance on volatile organic compounds, but also has relatively strong visible light catalytic activity, so that the integration of adsorption of volatile organic compounds and photocatalytic mineralization is realized, and the reaction rate and the reaction efficiency of degrading organic pollutants in a photocatalytic manner are greatly enhanced. Moreover, the Au / TiO2 / CFP ternary composite nano photocatalyst can be applied to the environment protection field as an adsorbent or a photocatalyst.

Description

technical field [0001] The invention belongs to the field of preparation and application of composite photocatalytic materials, in particular to an Au / TiO 2 / CFP ternary composite nano photocatalyst and its preparation method and application. Background technique [0002] Volatile organic compounds are one of the main pollutants in the air of industrial areas and cities, which can cause serious harm to the surrounding environment and human health. For this reason, various physical, chemical and biological methods for removing VOCs have been developed. Among them, titanium dioxide (TiO 2 ) photocatalytic oxidation technology, as an emerging environmental purification technology, has received extensive attention. TiO 2 With the characteristics of stable structure, high photocatalytic efficiency and low price, it is an efficient photocatalyst that can be used for environmental purification. Under UV light irradiation, TiO 2 It can generate holes with strong oxidation abil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/52B01J35/10B01D53/86B01D53/72
CPCY02A50/20
Inventor 安太成史家远陈江耀李桂英
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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