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Creased titanium dioxide fiber loaded nanometer silver phosphate composite material and preparation method thereof

A technology of titanium dioxide and composite materials, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of poor load uniformity, complicated preparation methods, uncontrollable, etc., and achieve low cost and raw material sources Wide, load-maintaining effect

Inactive Publication Date: 2018-12-18
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in ZL201110020591.5, TiO was prepared by ultrasonic-assisted electrochemistry 2 / Ag 3 PO 4 Composite nanotube array material with enhanced TiO 2 The catalytic performance of nanotube arrays, but the silver phosphate particles can only be loaded at the orifice of the nanotube arrays, and the preparation method is relatively complicated
The article (Materials Research Bulletin, 70(2015): 129-136; Applied Surface Science, 317(2014): 833838) prepared TiO 2 / Ag 3 PO 4 compound, but they are based on TiO 2 Particles are the carrier, and the uniformity of loading is poor and uncontrollable

Method used

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  • Creased titanium dioxide fiber loaded nanometer silver phosphate composite material and preparation method thereof
  • Creased titanium dioxide fiber loaded nanometer silver phosphate composite material and preparation method thereof
  • Creased titanium dioxide fiber loaded nanometer silver phosphate composite material and preparation method thereof

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Effect test

Embodiment 1

[0022] Take 150mg of TiO 2 Add fiber into 50mL deionized water, add 1.5mg of polyethylene glycol drop by drop, ultrasonicate for 30 minutes, weigh 913mg of silver nitrate and add to the above solution, stir for 6 hours to obtain solution A; weigh 254mg of disodium hydrogen phosphate Dissolve in deionized water and stir evenly to obtain a transparent solution B. Add solution B to solution A, then filter in the dark and stir for 12 hours, wash 2 times with ethanol, then wash 3 times with water, and dry the obtained product in an oven to obtain TiO 2 / Ag 3 PO 4 Composite fiber material. The XRD figure of gained composite material sees figure 1 , the obtained phase-pure TiO 2 / Ag 3 PO 4 composite material.

Embodiment 2

[0024] Take 150mg of TiO 2 Add fiber to 50mL deionized water, add 0.75mg of polyethylene glycol drop by drop, ultrasonicate for 30 minutes, weigh 36.5mg of silver nitrate and add it to the above solution, stir for 12 hours to obtain solution A; weigh 10.2mg of hydrogen phosphate Dissolve the disodium in deionized water and stir evenly to obtain a transparent solution B. Add solution B to solution A, then filter in the dark and stir for 24 hours, wash 3 times with ethanol, then wash 4 times with water, and dry the obtained product in an oven to obtain TiO 2 / Ag 3 PO 4 Composite fiber material. The SEM image of the obtained composite material is shown in figure 2 , to get TiO 2 / Ag 3 PO 4 Composite material, Ag 3 PO 4 Particles are uniformly loaded on TiO 2 surface of the fiber, Ag 3 PO 4 The particle size is about 10-20nm.

Embodiment 3

[0026] Take 150mg of TiO 2 Fiber, added to 50mL deionized water, 0.75mg polyethylene glycol was added dropwise, ultrasonicated for 30 minutes, 183mg silver nitrate was weighed and added to the above solution, stirred for 10 hours to obtain solution A; 50.8mg hydrogen phosphate dihydrogen phosphate was weighed Sodium was dissolved in deionized water and stirred evenly to obtain a transparent solution B. Add solution B to solution A, then filter in the dark and stir for 18 hours, wash with ethanol for 2 times, then wash with water for 4 times, and place the product in an oven to dry to obtain TiO 2 / Ag 3 PO 4 Composite fiber material.

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Abstract

The invention belongs to the field of preparation of inorganic nano-materials, and discloses a creased titanium dioxide fiber loaded nanometer silver phosphate composite material and a preparation method thereof. TiO2 / Ag3PO4 composite nano-fibers are prepared by a surfactant-assisted impregnation technology. The preparation method comprises the following steps: dispersing creased TiO2 fibers in deionized water, adding certain amounts of a surfactant and a silver source in proportion, and performing ultrasonic dispersion to obtain a solution A; weighing a phosphorus source according to a stoichiometric ratio, dissolving the phosphorus source in deionized water, and performing stirring to obtain a solution B; and adding the solution B to the solution A, performing stirring in a shady place,filtering the obtained solution, washing the obtained material, and drying the washed material in an oven to obtain the TiO2 / Ag3PO4 composite nano-fibers. In the obtained TiO2 / Ag3PO4 composite nano-fibers, Ag3PO4 particles are uniformly supported on the surface of the TiO2 fibers, and the size of the particles is about 10-20 nm. The light absorption waveband of TiO2 is broadened to the visible light region. The composite material has the advantages of simple preparation process, low cost and controllable morphology and size, and is expected to be widely used in catalytic degradation of organicpollutants.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic nanometer materials, in particular to a wrinkled titanium dioxide fiber-loaded nanometer silver phosphate composite material and a preparation method thereof. Background technique [0002] As a semiconductor material, titanium dioxide has attracted much attention in the field of photocatalysis due to its stable chemical properties, good thermal stability, non-toxic and harmless. However, its band gap is wide (about 3.2eV), and near-ultraviolet light is required to excite electron-hole pairs, and ultraviolet light only accounts for less than 5% of sunlight, which greatly limits the application range of titanium dioxide as a photocatalyst. Methods to improve the visible light catalytic activity of titanium dioxide include doping with rare earth elements, doping with transition metal elements, doping with noble metals, compounding semiconductors, and sensitizing organic dyes. Semiconductor re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18B01J35/06B01J35/10
CPCB01J27/1802B01J35/58B01J35/60B01J35/39
Inventor 孟献丰庄严何加珍董沈慧韩秋霞
Owner JIANGSU UNIV
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