Nano titanyl pyrophosphate photocatalyst and preparation method thereof

A technology of titanyl pyrophosphate and titanyl phosphate, applied in the field of photocatalyst, can solve the problems of photocatalytic performance and application that have not been reported, and achieve the effects of excellent photocatalytic degradation performance, stable physical and chemical properties, and significant application value.

Inactive Publication Date: 2011-04-27
长沙市友爱实验器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photocatalytic properties and applications of these two titanium-containing phosphates have not been reported.

Method used

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  • Nano titanyl pyrophosphate photocatalyst and preparation method thereof
  • Nano titanyl pyrophosphate photocatalyst and preparation method thereof
  • Nano titanyl pyrophosphate photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 2.0 grams of PVP into deionized water, stir until completely dissolved at room temperature, then dissolve 77.25 grams of 20% titanium trichloride in deionized water containing PVP, add deionized water to make the solution volume reach 1 liter and obtain a titanium concentration of 0.1 mol / liter solution A, then add 800 milliliters of sodium hydroxide aqueous solution with a concentration of 0.5 mol / liter to the prepared solution A under stirring, and continue stirring for 5 minutes after adding all the sodium hydroxide solution to obtain a yellow oily suspension Liquid B; then add 100 milliliters of aqueous hydrogen peroxide solution with a concentration of 1 mol / liter to the suspension B under stirring, and continue stirring for 10 minutes after all the hydrogen peroxide is added to obtain a light yellow oily suspension C; Add 1000.0 ml of phosphoric acid with a concentration of 0.1 mol / L to the suspension C under stirring, continue to stir for 10 minutes after all ...

Embodiment 2

[0035] Add 4.6 grams of sodium polyacrylate into deionized water, stir at room temperature until completely dissolved, then dissolve 475 grams of 20% titanium tetrachloride in deionized water containing sodium polyacrylate, add deionized water to make the solution volume reach 1 liter Promptly obtain a solution A with a titanium concentration of 0.5 mol / liter, then add 2000 milliliters of aqueous ammonia with a concentration of 1.0 mol / liter to the prepared solution A under stirring, and continue stirring for 10 minutes after all the ammonia is added to obtain a white oily suspension B; then add 250 milliliters of aqueous hydrogen peroxide solution with a concentration of 2 mol / liter to the suspension B under stirring, and continue to stir for 15 minutes after all the hydrogen peroxide is added to obtain a white oily suspension C; then add 500.0 milliliters Add sodium hydrogen pyrophosphate with a concentration of 0.5 mol / liter into the suspension C under stirring, continue sti...

Embodiment 3

[0038] Add 1.0 g of P123 into deionized water, stir at room temperature until completely dissolved, then dissolve 950 g of 20% titanium tetrachloride in deionized water containing P123, add deionized water to make the solution volume reach 1 liter to obtain the titanium concentration 1.0 mol / liter solution A, then add 1000 milliliters of potassium hydroxide aqueous solution with a concentration of 4.0 mol / liter to the prepared solution A under stirring, and continue stirring for 15 minutes after adding all the potassium hydroxide solution to obtain a white oil Suspension B; then add 250 milliliters of aqueous hydrogen peroxide solutions with a concentration of 4 mol / liter to the suspension B under stirring, and continue stirring for 15 minutes after hydrogen peroxide has been added to obtain a white oily suspension C; then Add 1250.0 ml of ammonium phosphate with a concentration of 0.8 mol / L to the suspension C under stirring, continue to stir for 20 minutes after all the ammon...

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Abstract

The invention relates to a nano titanyl pyrophosphate photocatalyst and a preparation method thereof. The nano titanyl pyrophosphate photocatalyst comprises ultrafine powder of pure titanyl pyrophosphate. The preparation method is as follows: firstly dissolving inorganic titanium salt into water solution containing a surface active agent or dissolving titanate into an alcohol solvent containing the surface active agent so as to form solution A containing titanium; under stirring, slowly dropwise adding dilute alkaline solution into the solution A to obtain white or light-yellow oily suspension B; then under fast stirring, dropwise adding proper hydrogen peroxide solution to the suspension B to obtain white oily suspension C; and finally under fast stirring, slowly dropwise adding water solution of phosphoric acid, or phosphate or pyrophosphoric acid or pyrophosphate or alcohol solution of phosphoester, standing and aging, then carrying out ultrasonic cleaning and centrifugal separation to obtain white slurry, and after drying, roasting and carrying out ball milling to obtain white ultrafine powder of nano titanyl pyrophosphate with the particle size of 10-60nm.

Description

technical field [0001] The invention relates to a photocatalyst, in particular to a nanometer titanyl pyrophosphate photocatalyst and a preparation method thereof. Background technique [0002] Titanium dioxide, zirconium dioxide, zinc oxide, tin oxide, cadmium sulfide and other photocatalyst materials (also known as photocatalysts) can be excited and jump to the conduction band from the electrons (e-) in the valence band under the irradiation of ultraviolet light. Corresponding holes (h+) are generated on the surface, and active oxygen and hydroxyl radicals with strong oxidation are generated at the same time, which can convert organic dyes, formaldehyde, benzene and benzene series, ammonia, volatile organic compounds (TVOC), bacteria, etc. Oxygenated and decomposed into harmless CO 2 、H 2 O and other non-toxic substances to the human body. However, in order for the above-mentioned photocatalyst to produce higher photocatalytic efficiency, it is usually necessary to use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18B01J35/02B01J37/00C02F1/30
CPCY02W10/37
Inventor 赵婉婷
Owner 长沙市友爱实验器材有限公司
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