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Semi-metal material Te nanowire/graphene hydrogel composite material as well as preparation method and application thereof

A graphene hydrogel, semi-metallic material technology, applied in the directions of gel preparation, botanical equipment and methods, applications, etc., can solve the problems of weak bactericidal effect, low photothermal conversion efficiency of photothermal catalysts, etc., and achieve simple sterilization. , Excellent photothermal conversion performance, sterilization and easy operation effect

Active Publication Date: 2019-11-15
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to overcome the defects and deficiencies of low photothermal conversion efficiency and weak bactericidal effect of existing photothermal sterilizing photothermal catalysts, and provide a semi-metallic material Te nanowire / graphene hydrogel composite material preparation method

Method used

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  • Semi-metal material Te nanowire/graphene hydrogel composite material as well as preparation method and application thereof
  • Semi-metal material Te nanowire/graphene hydrogel composite material as well as preparation method and application thereof
  • Semi-metal material Te nanowire/graphene hydrogel composite material as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0043] A kind of preparation method of half metal material Te nanowire / graphene hydrogel composite material, comprises the steps:

[0044] S1. Sodium tellurite (Na 2 TeO 3 ) and polyvinylpyrrolidone PVP were dissolved in deionized water, and gradually added hydrazine hydrate (N2 h 5 OH) solution as a reducing agent and ammonia water to control the pH, magnetically stir evenly, transfer the mixed solution to a hydrothermal reaction kettle with a polytetrafluoroethylene lining, and a hydrothermal synthesis reaction occurs in an oven, wherein the hydrothermal reaction temperature is 180 ℃, reaction time 10h, wherein the mass ratio of sodium tellurite to PVP is 1:5, the concentration of sodium tellurite is 2mg / mL, the mass percentage of hydrazine hydrate solution is 80%, the volume ratio of hydrazine hydrate to aqueous solution is 1:30, the volume ratio of hydrazine hydrate and ammonia water is 1:2;

[0045] S2. After the reaction, after cooling down to room temperature, centri...

Embodiment 2

[0050] A kind of preparation method of half metal material Te nanowire / graphene hydrogel composite material, comprises the steps:

[0051] S1. Sodium tellurite (Na 2 TeO 3 ) and polyvinylpyrrolidone PVP were dissolved in deionized water, and gradually added hydrazine hydrate (N 2 h 5 OH) solution as a reducing agent and ammonia water to adjust the PH, magnetically stir evenly, transfer the mixed solution to a hydrothermal reaction kettle with a polytetrafluoroethylene lining, and a hydrothermal synthesis reaction occurs in an oven, wherein the hydrothermal reaction temperature is 180 ℃, reaction time 5h, wherein the mass ratio of sodium tellurite to PVP is 1:5, the concentration of sodium tellurite is 2mg / mL, the mass percentage of hydrazine hydrate solution is 80%, the volume ratio of hydrazine hydrate to aqueous solution is 1:30, the volume ratio of hydrazine hydrate and ammonia water is 1:2;

[0052] S2. After the reaction, after cooling down to room temperature, centri...

Embodiment 3

[0056] A kind of preparation method of half metal material Te nanowire / graphene hydrogel composite material, comprises the steps:

[0057] S1. Sodium tellurite (Na 2 TeO 3 ) and polyvinylpyrrolidone PVP were dissolved in deionized water, and gradually added hydrazine hydrate (N 2 h 5 OH) solution as a reducing agent and ammonia water to adjust the PH, magnetically stir evenly, transfer the mixed solution to a hydrothermal reaction kettle with a polytetrafluoroethylene lining, and a hydrothermal synthesis reaction occurs in an oven, wherein the hydrothermal reaction temperature is 180 ℃, reaction time 10h, wherein the mass ratio of sodium tellurite to PVP is 1:5, the concentration of sodium tellurite is 2mg / mL, the mass percentage of hydrazine hydrate solution is 80%, the volume ratio of hydrazine hydrate to aqueous solution is 1:35, the volume ratio of hydrazine hydrate and ammonia water is 1:3;

[0058] S2. After the reaction, after cooling down to room temperature, centr...

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Abstract

The invention discloses a semi-metal material, namely a Te nanowire / graphene hydrogel composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: adding ammonium hydroxide and a reducing agent, namely a hydrazine hydrate solution, into a water solution of sodium tellurate and polyvinylpyrrolidone, performing uniform mixing, performing a hydrothermal synthesis reaction, performing cooling to room temperature, separating a reaction product so as to obtain precipitate, washing the precipitate to be neutral, performing drying and grinding so as to obtain Te nanowires, adding a graphene oxide suspension, performing uniform mixing, performing a hydrothermal synthesis reaction, removing excessive graphene oxide and Te nanowireswhich are not tightly compounded, and performing freeze drying, so as to obtain the composite material. The Te nanowire / graphene hydrogel composite material disclosed by the invention is simple in preparation method, has photocatalysis sterilization and photo-thermal conversion performance, thermocatalytic sterilization can be promoted through a photo-thermal synergetic function, the inactivationratio is 70-100%, no chemical reagent is additionally used, and the problem of secondary pollution of a byproduct of a conventional sterilization technique can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of metal nanomaterials, more specifically, to a semimetal material Te nanowire / graphene hydrogel composite material. Background technique [0002] Microbial pollution of water bodies is a threat to both the environment and human health, and has become a global focus. Traditional sterilization and disinfection methods mainly include ultraviolet disinfection technology, ozone disinfection technology and chlorine disinfection, etc., but the disinfection by-products produced by these technologies are very toxic, which can easily cause secondary environmental pollution and seriously threaten human health. Therefore, there is an urgent need to develop new sterilization and disinfection technologies that are efficient in sterilization and will not produce harmful disinfection by-products. Photothermal sterilization is a relatively simple, effective, and cost-effective sterilization method. Its principle is that ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057A01N59/02C02F1/30C02F1/50A01P3/00A01P1/00
CPCB01J27/0576A01N59/02C02F1/30C02F1/50B01J13/0052C02F2305/10C02F2303/04B01J35/39B01J35/23
Inventor 夏德华徐伯宏王蕴琛何春刘华丹何桓俊娃黄雅婧张峰
Owner SUN YAT SEN UNIV
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