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Preparation method of cadmium zinc sulfide-titanic acid nanotube composite photocatalyst

A technology of titanate nanotubes and composite photocatalysts, which is applied in chemical instruments and methods, catalyst activation/preparation, special compound water treatment, etc., can solve the problems of insufficient utilization rate and low separation efficiency of photogenerated electron-hole pairs, and achieve The effect of low cost, high adsorption and photocatalytic performance, and simple process

Active Publication Date: 2020-12-01
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the utilization rate of visible light is insufficient, and the separation efficiency of photogenerated electron-hole pairs is not high.

Method used

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  • Preparation method of cadmium zinc sulfide-titanic acid nanotube composite photocatalyst
  • Preparation method of cadmium zinc sulfide-titanic acid nanotube composite photocatalyst
  • Preparation method of cadmium zinc sulfide-titanic acid nanotube composite photocatalyst

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Effect test

Embodiment 1

[0042] A kind of cadmium zinc sulfide-titanic acid nanotube composite photocatalyst preparation method of the present invention, specifically implement according to the following steps:

[0043] Step 1. Weigh TiO 2 Add the nanometer powder into the NaOH solution, stir for 5 minutes, carry out hydrothermal reaction, cool to room temperature, and obtain sample A;

[0044] The concentration of NaOH solution is 5mol / L, TiO 2 The mass-to-body ratio of nanopowder to NaOH solution is 0.08g / 5mL;

[0045] The hydrothermal reaction condition is 140°C, and the time is 12h;

[0046] Step 2. Repeatedly washing sample A with deionized water until PH = 6, centrifuging to separate the precipitate, adding dilute hydrochloric acid to the precipitate for pickling for 0.5h, then washing with water, centrifuging, and drying again to obtain titanate nanotubes ;

[0047] The concentration of dilute hydrochloric acid is 0.01mol / L, and the volume is 20mL;

[0048] The drying temperature is 50-80°C;...

Embodiment 2

[0055] A kind of cadmium zinc sulfide-titanic acid nanotube composite photocatalyst preparation method of the present invention, specifically implement according to the following steps:

[0056] Step 1. Weigh TiO 2 Add the nanometer powder into the NaOH solution, stir for 25 minutes, carry out the hydrothermal reaction, cool to room temperature, and obtain the sample A;

[0057] The concentration of NaOH solution is 8mol / L, TiO 2 The mass-to-body ratio of nanopowder to NaOH solution is 1g / 25mL;

[0058] The hydrothermal reaction condition is 1480°C, and the time is 20h;

[0059] Step 2. Repeatedly washing sample A with deionized water until pH = 6.2, centrifuging to separate the precipitate, adding dilute hydrochloric acid to the precipitate for pickling for 1 hour, then washing with water, centrifuging, and drying again to obtain titanate nanotubes;

[0060] The concentration of dilute hydrochloric acid is 0.5mol / L, and the volume is 100mL;

[0061] The drying temperature...

Embodiment 3

[0068] A kind of cadmium zinc sulfide-titanic acid nanotube composite photocatalyst preparation method of the present invention, specifically implement according to the following steps:

[0069] Step 1. Weigh TiO 2 Add the nanometer powder into the NaOH solution, stir for 58 minutes, carry out hydrothermal reaction, cool to room temperature, and obtain sample A;

[0070] The concentration of NaOH solution is 10mol / L, TiO 2 The mass-to-body ratio of nanopowder to NaOH solution is 1g / 100mL;

[0071] The hydrothermal reaction condition is 150°C, and the time is 48h;

[0072] Step 2. Repeatedly washing sample A with deionized water until pH = 6.5, centrifuging to separate the precipitate, adding dilute hydrochloric acid to the precipitate for pickling for 3 hours, then washing with water, centrifuging, and drying again to obtain titanate nanotubes;

[0073] The concentration of dilute hydrochloric acid is 1mol / L, and the volume is 1000mL;

[0074] The drying temperature is 60°...

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Abstract

The invention relates to a preparation method of a cadmium zinc sulfide-titanic acid nanotube composite photocatalyst. The prepared cadmium zinc sulfide-titanic acid nanotube composite photocatalyst has relatively high adsorption and photocatalysis performance on wastewater, and the preparation method of the photocatalyst also has the characteristics of low preparation process cost, simple process, easiness in control and the like.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a method for preparing a cadmium zinc sulfide-titanic acid nanotube composite photocatalyst. Background technique [0002] Environmental pollution caused by industrial waste water is gradually exposed. The quality of water resources continues to decline, and the water environment deteriorates accordingly. The future worries us. In the various wastewater generated in daily life and production, there are many organic pollutants that are difficult to be purified by the water body itself. Various toxic elements that enter the human body through the food chain will cause poisoning to a certain extent. Serious pollution can even be caused by radioactivity. and radiation, causing damage to human internal organs and even cancer. Pollution directly leads to the degradation of the land ecosystem, affects the physical and chemical properties of the soil,...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J37/10B01J37/03B01J37/08C02F1/30
CPCB01J27/04B01J37/10B01J37/036B01J37/08C02F1/30C02F2305/10C02F2101/308B01J35/23B01J35/39Y02W10/37
Inventor 卢定泽吴琼张勃宇张育豪曾宜梅黄驰潘玖存秦成郝红娟
Owner XI'AN POLYTECHNIC UNIVERSITY
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