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Method for preparing lead titanate nanosheet and cadmium sulfide nano-particle composite material

A nanoparticle and composite material technology, applied in the direction of cadmium sulfide, titanium compounds, chemical instruments and methods, etc., can solve problems such as no relevant reports, and achieve the effect of simple process, no pollution and high purity.

Inactive Publication Date: 2015-01-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the composite visible light catalyst material of this material and other semiconductor sulfides is still in the exploratory stage, and there are no relevant reports at home and abroad.

Method used

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  • Method for preparing lead titanate nanosheet and cadmium sulfide nano-particle composite material
  • Method for preparing lead titanate nanosheet and cadmium sulfide nano-particle composite material
  • Method for preparing lead titanate nanosheet and cadmium sulfide nano-particle composite material

Examples

Experimental program
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Embodiment 1

[0017] 1) Dissolve titanium dioxide in 6mol / L potassium hydroxide aqueous solution to adjust Ti 4+ The ion concentration is 0.1mol / L;

[0018] 2) Configure a 0.2mol / L lead nitrate aqueous solution, and add the Ti prepared in step 1) dropwise under stirring 4+ an aqueous solution, adjusting the lead-titanium molar ratio to 2.0, and stirring for 20 minutes to obtain an oxyhydroxide precipitation mixture of titanium and lead.

[0019] 3) Add the mixed liquid in step 2) into the inner tank of the reactor, adjust its volume to 80% of the inner tank volume of the reactor with deionized water, stir for 5 minutes, and place the inner tank of the reactor with the reaction materials in the reactor , airtight, reacted at 200°C for 12 hours, placed in the air to cool down to room temperature naturally, took out the reaction product, washed it repeatedly with 1% nitric acid and deionized water for 3 times, filtered, and dried to obtain Powdered perovskite lead titanate nanosheets;

[00...

Embodiment 2

[0023] 1) Dissolve titanium dioxide in 6 mol / L potassium hydroxide aqueous solution, adjust Ti 4+ The ion concentration is 0.2mol / L;

[0024] 2) Configure a 0.1mol / L lead nitrate aqueous solution, and add the Ti prepared in step 1) dropwise under stirring 4+ an aqueous solution, adjusting the lead-titanium molar ratio to 0.5, and stirring for 30 minutes to obtain an oxyhydroxide precipitation mixture of titanium and lead.

[0025] 3) Add the mixed solution of step 2) into the inner tank of the reactor, adjust its volume to 80% of the inner tank volume of the reactor with deionized water, stir for 3 minutes, and place the inner tank of the reactor with the reaction materials in the reactor in airtight, placed at 200°C for 8 hours, then placed in the air to cool down to room temperature naturally, the reaction product was taken out, washed repeatedly with 1% nitric acid and deionized water for 5 times, filtered, and dried. Obtain powdered perovskite lead titanate nanosheets; ...

Embodiment 3

[0029] 1) Dissolve titanium dioxide in 6mol / L potassium hydroxide aqueous solution to adjust Ti 4+ The ion concentration is 0.2mol / L;

[0030] 2) Configure a 0.3mol / L lead nitrate aqueous solution, and add the Ti prepared in step 1) dropwise under stirring 4+ an aqueous solution, adjusting the molar ratio of lead to titanium to 1.5, and stirring for 30 minutes to obtain a mixed solution of titanium and lead oxyhydroxide precipitation.

[0031] 3) Add the mixed liquid in step 2) into the inner tank of the reactor, adjust its volume to 80% of the inner tank volume of the reactor with deionized water, stir for 10 minutes, and place the inner tank of the reactor with the reaction materials in the reactor , airtight, placed at 200 ° C for 10 hours, placed in the air to cool down to room temperature naturally, the reaction product was taken out, washed repeatedly with 1% nitric acid and deionized water for 4 times, filtered, and dried. Obtain powdered perovskite lead titanate nano...

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Abstract

The invention relates to a method for preparing a lead titanate nanosheet and cadmium sulfide nano-particle composite material. According to the method, a wet chemical reaction method is adopted. The method comprises the following steps: by taking titanium dioxide as a raw material, by taking potassium hydroxide as a mineralizer, promoting crystallization, dropwise adding an aqueous solution of lead nitrate, carrying out a hydrothermal reaction, and realizing synthesis of titanium ore lead titanate monocrystalline nanosheets; by adopting an aqueous solution of cadmium chloride and thioacetamide and the synthesized perovskite lead titanate monocrystalline nanosheets as reaction materials, carrying out a secondary hydrothermal reaction, thereby synthesizing a composite nanometer structure of lead titanate nanosheets and cadmium sulfide nano-particles. The method is simple in process, easily controllable in process, pollution-free and low in cost. In addition, the prepared lead titanate nanosheet and cadmium sulfide nano-particle composite material is high in purity and high in dispersity and can provide a development basis for application of a composite material of perovskite oxides and semiconductor sulfides.

Description

technical field [0001] The invention relates to a preparation method of lead titanate nanosheet and cadmium sulfide nanoparticle composite material, belonging to the field of inorganic non-metallic materials. Background technique [0002] Lead titanate is a typical perovskite-type ferroelectric oxide. Due to its simple structure, strong piezoelectricity and ferroelectricity, lead titanate has been the prototype of research in the field of ferroelectricity and piezoelectricity since its discovery in the 1950s. It is of great significance for people to understand the electronic origin of piezoelectricity and ferroelectricity of perovskite oxides. Zhejiang University used the hydrothermal method to prepare two-dimensional lead titanate single crystal nanosheets for the first time (Chunying Chao, Zhaohui Ren, Yihan Zhu, Zhen Xiao, Zhenya Liu, Gang Xu, Jiangquan Mai, Xiang Li, Ge Shen, and Gaorong Han, Self -Templated Synthesis of Single-Crystal and Single-Domain Ferroelectric N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00C01G11/02B82Y30/00
CPCC01G23/003B82Y30/00C01P2004/64
Inventor 韩高荣姜姗任召辉徐刚钞春英翁文剑杜丕一沈鸽赵高凌
Owner ZHEJIANG UNIV
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