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Synthesizing method of bimetallic photocatalyst with hollow self-doped structure and application

A technology of photocatalyst and synthesis method, which is applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc. It can solve the problems of difficult treatment of inorganic salt wastewater, environmental pollution, high price, etc., and achieve high added value, Improved photocatalytic efficiency and simple equipment

Inactive Publication Date: 2018-01-12
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, people's awareness of environmental protection has gradually increased, and they have gradually abandoned the traditional oxidants used in the selective oxidation of alcohols, such as dichromate and permanganate. These oxidants are expensive, toxic, and inorganic salt wastewater is difficult to treat. , causing serious pollution to the environment, does not meet the current requirements of "green chemistry"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of synthetic method of hollow self-doping structure bimetallic photocatalyst comprises the following steps:

[0034] (1) Mix 3.54 mL glacial acetic acid, 0.35 mL deionized water and 4.372 mL ionic liquid [Bmim][BF 4 ] are mixed to form a reaction solution A;

[0035] (2) Add tetrabutyl titanate dropwise to the reaction solution A, stirring at 150RPM until the mixture becomes clear and transparent, in which the ionic liquid [Bmim][BF 4 ]: Tetrabutyl titanate=0.2 mol%;

[0036] (3) Transfer the above clear and transparent mixed liquid to a 70ml Teflon-lined hydrothermal reaction kettle, then put it into a microwave digestion apparatus, and react at 130°C for 50 minutes;

[0037] (4) Collect the precipitate, wash with deionized water and absolute ethanol three times each, dry in an oven at 60°C for 12 hours, and then dry in a vacuum oven at 200°C for 6 hours to obtain a hollow self-doped Ti 3+ / TiO 2 catalyst of light;

[0038] (5) Dry the above catalyst in a v...

Embodiment 2

[0050] A kind of synthetic method of hollow self-doping structure bimetallic photocatalyst comprises the following steps:

[0051] (1) Mix 3.54 mL glacial acetic acid, 0.35 mL deionized water and 4.372 mL ionic liquid [Bmim][BF 4 ] are mixed to form a reaction solution A;

[0052] (2) Add tetrabutyl titanate dropwise to the reaction solution A, stirring at 150RPM until the mixture becomes clear and transparent, in which the ionic liquid [Bmim][BF 4 ]: tetrabutyl titanate=1 mol%;

[0053] (3) Transfer the above clear and transparent mixed liquid to a 70ml Teflon-lined hydrothermal reaction kettle, then put it into a microwave digestion apparatus, and react at 150°C for 60 minutes;

[0054] (4) Collect the precipitate, wash with deionized water and absolute ethanol three times each, dry in an oven at 60°C for 12 hours, and then dry in a vacuum oven at 200°C for 6 hours to obtain a hollow self-doped Ti 3+ / TiO 2 catalyst of light;

[0055] (5) Dry the above catalyst in a vac...

Embodiment 3

[0068] A kind of synthetic method of hollow self-doping structure bimetallic photocatalyst comprises the following steps:

[0069] (1) Mix 3.54 mL glacial acetic acid, 0.35 mL deionized water and 4.372 mL ionic liquid [Bmim][BF 4 ] are mixed to form a reaction solution A;

[0070] (2) Add tetrabutyl titanate dropwise to the reaction solution A, stirring at 150RPM until the mixture becomes clear and transparent, in which the ionic liquid [Bmim][BF 4 ]: tetrabutyl titanate=3 mol%;

[0071] (3) Transfer the above-mentioned clear and transparent mixed liquid to a 70ml Teflon-lined hydrothermal reaction kettle, then put it into a microwave digestion apparatus, and react at 180°C for 80 minutes;

[0072] (4) Collect the precipitate, wash with deionized water and absolute ethanol three times each, dry in an oven at 60°C for 12 hours, and then dry in a vacuum oven at 200°C for 6 hours to obtain a hollow self-doped Ti 3+ / TiO 2 catalyst of light;

[0073] (5) Dry the above catalys...

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Abstract

The invention relates to a synthesizing method of a bimetallic photocatalyst with a hollow self-doped structure. The synthesizing method comprises the following steps of mixing glacial acetic acid, deionized water, ion liquid [Bmin][BF4] and tetrabutyl titanate under the stirring state until the transparent and clear state is formed, transferring into a 70ml hydrothermal reaction kettle lined withTeflon, and perform microwave reaction; washing, drying, mixing with urea, calcining, and adding a metal precursor mixed solution to react; washing, drying, and calcining, so as to obtain the bimetallic AuPt / N-TiO2 (copper-platinum / nitrogen-titanium dioxide) photocatalyst with the hollow self-doped structure. Compared with the prior art, the synthesizing method has the advantages that the synthesized nanoparticle has small size and good dispersivity, and the tightness of the metal-conductor interface bonding is greatly improved by in-situ synthesizing; the required equipment is simple, the technology is simple and convenient, the additional hazard to the environment is avoided, the high-value utilization of aromatic alcohol matters is realized, and the deeper social meaning and economic value are realized.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a synthesis method and application of a hollow self-doping structure bimetallic photocatalyst. Background technique [0002] Energy shortage and environmental pollution have become a worldwide problem that threatens sustainable development. With the development of my country's social economy and the improvement of people's quality of life, the ecological living environment has been irreversibly damaged, and non-renewable fossil energy has been continuously consumed. Therefore, developing new renewable energy sources and improving China's ecological living environment is an important development strategy for our country at present. Researchers have discovered that semiconductor photocatalytic materials can convert solar energy into electrical energy or chemical energy, which provides a new and effective way to solve environmental and energy problems. In recent ye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/04B01J37/10B01J37/34B82Y30/00B82Y40/00C07C45/38C07C47/54
Inventor 李维尊陈昱鞠美庭候其东王雁南黄访
Owner NANKAI UNIV
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