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Preparation method and application of shell powder loaded nanometer TiO2 photocatalyst

A technology of photocatalyst and shell powder, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high cost, difficult recycling, easy agglomeration, etc., and achieve low cost and easy control , the effect of high quantum efficiency

Inactive Publication Date: 2017-12-29
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the most commonly used nano-TiO 2 Photocatalysts have the disadvantages of easy agglomeration, difficult recovery and high cost in the water treatment process

Method used

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  • Preparation method and application of shell powder loaded nanometer TiO2 photocatalyst
  • Preparation method and application of shell powder loaded nanometer TiO2 photocatalyst
  • Preparation method and application of shell powder loaded nanometer TiO2 photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 5 milliliters of tetrabutyl titanate are hydrolyzed in 95 milliliters of acidic solution of pH=4.5, obtain uniform transparent TiO 2 1.15 wt% TiO 2 Sol, adjusted by dialysis to obtain TiO with a pH value of 6 2 Sol.

[0025] (2) Add 10.8 grams of 500-mesh shell powder to TiO 2 sol, stirred at room temperature for 2h to obtain shell powder-TiO 2 Sol mixture.

[0026] (3) Shell powder-TiO 2 Colloidal sol mixture prepared by microwave drying method to prepare shell powder-TiO 2 Gel, the microwave frequency used is 2450MHz, and the power is 600W.

[0027] (4) The obtained shell powder-TiO 2 The gel was calcined in a calcination furnace at 250°C for 3h to obtain nano-Ti loaded on shell powder 2 catalyst of light.

Embodiment 2

[0029] (1) 5.5 milliliters of tetraisopropyl titanate were hydrolyzed in 194.5 milliliters of pH=4 acidic solution to obtain uniform transparent TiO 2 0.75 wt% TiO 2 sol, obtained by dialysis to TiO with a pH value of 5 2 Sol.

[0030] (2) Add 6 grams of 100-mesh shell powder to TiO 2 sol, stirred at room temperature for 1 h to obtain shell powder-TiO 2 Sol mixture.

[0031] (3) Shell powder-TiO 2 The sol mixture was heated and dried under agitation to obtain shell powder-TiO 2 Gel, the heating temperature is 100°C.

[0032] (4) The obtained shell powder-TiO 2 The gel was calcined in a calcination furnace at 400°C for 4h to obtain shell powder-loaded nano-TiO 2 catalyst of light.

Embodiment 3

[0034] Hydrolyze 35 ml of tetrabutyl titanate in 365 ml of alkaline solution with pH=8.5 to obtain uniform transparent TiO 2 2.0 wt% TiO 2 Sol, adjusted by dialysis to obtain TiO with a pH value of 7 2 Sol.

[0035] (2) Add 12 grams of 300 mesh shell powder to TiO 2 sol, stirred at room temperature for 5h to obtain shell powder-TiO 2 Sol mixture.

[0036] (3) Shell powder-TiO 2 The sol mixture was heated and dried under agitation to obtain shell powder-TiO 2 Gel, the heating temperature is 110°C.

[0037] (4) The obtained shell powder-TiO 2 The gel was calcined in a calcination furnace at 600°C for 3h to obtain shell powder loaded nano-TiO 2 catalyst of light.

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PUM

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Abstract

The invention discloses a shell powder loaded nanometer TiO2 photocatalyst. A preparation method comprises the following steps: hydrolyzing an alcohol salt of titanium to obtain a colloidal sol; adding the colloidal sol into shell powder, and stirring; drying the colloidal sol to obtain a gel; and roasting the gel to obtain the shell powder loaded nanometer TiO2 photocatalyst. The method is mild in reaction condition and easy to control, the equipment is simple, the raw materials are easily obtained, the synthetic process is simple, the photocatalyst is easy for industrial production, and the prepared loaded nanometer TiO2 photocatalyst has the performance of photocatalytic degradation tetracycline hydrochloride and can be applied to photocatalysis treatment of tetracycline hydrochloride in a water phase.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to a treatment method of tetracycline hydrochloride in the water phase, specifically a method for loading nano-TiO with shell powder. 2 A photocatalytic method for degrading tetracycline hydrochloride in water. Background technique [0002] Tetracycline hydrochloride is a tetracycline antibiotic, because it can inhibit the infection of bacteria in both humans and livestock, it is widely used all over the world, mainly for the treatment of human diseases and as an additive for animal feed. Tetracycline hydrochloride is not fully absorbed in humans and animals, and most of it will be excreted with excrement; and the wastewater discharged by its manufacturers during the production process also contains high concentrations of tetracycline hydrochloride. Tetracycline hydrochloride is highly water-soluble, not easy to degrade, easy to accumulate, and has a strong inhibitory effect on bacteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/232B01J37/03B01J37/34B01J37/08C02F1/30C02F101/38
CPCC02F1/30B01J23/002B01J27/232B01J37/033B01J37/036B01J37/08B01J37/346C02F2305/10C02F2101/38B01J35/23B01J35/39
Inventor 杨大鹏薛珲陈庆华王佳琦钱庆荣陈艺兰
Owner QUANZHOU NORMAL UNIV
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