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PbTiO3 flower-like particle and preparation and application thereof

A particle and flower-like technology, applied in the field of PbTiO3 flower-like particles and its preparation and application, can solve the problems of no piezoelectric performance and photoelectric performance, achieve high reusability, high efficiency, and improve degradation efficiency

Pending Publication Date: 2022-05-27
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology

ferroelectric oxide PbTiO 3 It is a typical tetragonal perovskite structure material with simple structure and excellent ferroelectric, piezoelectric and dielectric properties. A PbTiO with octahedral morphology is disclosed in Chinese patent CN 104001493B 3 -TiO 2 Preparation method of composite nano photocatalyst; PbTiO with octahedral morphology 3 -TiO 2 The composite nanophotocatalyst can adjust the ultraviolet photocatalysis of titanium dioxide to visible light catalysis, and completely degrade the methylene blue solution within 70 minutes, but there is no effective coupling of ferroelectric oxide PbTiO in this scheme. 3 The piezoelectric performance and photoelectric performance, and the application of degradation needs to be further explored

Method used

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  • PbTiO3 flower-like particle and preparation and application thereof
  • PbTiO3 flower-like particle and preparation and application thereof
  • PbTiO3 flower-like particle and preparation and application thereof

Examples

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Embodiment 1

[0027] Embodiment 1, a kind of PbTiO 3 Preparation of flower-like particles

[0028] 1) 2 g of tetra-n-butyl titanate (98%, Aladdin, China) was added to a mixture of 30 mL of ethanol (99.5%, Aladdin, China) and 10 mL of glycerol (99.5%, Aladdin, China) to obtain mixture;

[0029] 2) The mixed solution obtained in the previous step was transferred to a 100mL polytetrafluoroethylene-lined stainless steel autoclave, and heated at 180°C for 24 hours; the obtained product was washed, collected and heat-treated at 450°C, and placed in air for 2 -4 hours to get TiO 2 flower-like particles;

[0030] 3) Put 0.02765g TiO 2 The particles and 0.13276g of lead acetate trihydrate were added to 350mL of deionized water and stirred for 1h (the molar ratio of Pb / Ti was 1:1; Pb in the solution was 2+ and Ti 4+ The concentration is 0.001M) to obtain mixed material;

[0031] 4) Transfer the mixed material into a 500mL PTFE-lined stainless steel autoclave, and heat it at 260°C for 6 hours; ...

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Abstract

The invention discloses a PbTiO3 flower-like particle and preparation and application thereof.The PbTiO3 particle is prepared through a two-step hydrothermal method, the product presents a flower-like morphology, and compared with materials of other morphologies, more catalytic reaction sites can be provided; according to the present invention, the methylene blue solution can be subjected to efficient piezoelectric-photocatalytic degradation under the dual effects of the xenon lamp and the ultrasound, the piezoelectric-photocatalytic technology has advantages of simpleness, convenience and effectiveness, and compared with the single photocatalysis or piezoelectric catalysis, the degradation efficiency is high within the same time; therefore, the material has a wide application prospect in the technical aspects of sewage treatment and environmental restoration.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric-photocatalysis, in particular to a kind of PbTiO 3 Flower-like particles and their preparation and use. Background technique [0002] With the continuous development of industrialization, the world is currently facing more severe environmental problems, among which the treatment and discharge of organic pollutants in water bodies has become a prominent problem endangering human life, health and safety. In order to solve this problem, those skilled in the art have proposed many feasible solutions, among which photocatalytic degradation technology is considered to be a promising treatment technology due to its advantages of non-toxicity, low cost and high catalytic activity. However, due to the low separation efficiency and high recombination speed of electron-hole pairs, this technology is still limited in practical use. [0003] To solve the above problems, a common approach is to build a ...

Claims

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Application Information

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IPC IPC(8): C01G23/00C02F1/30C02F101/30
CPCC01G23/003C02F1/30C01P2004/30C01P2002/72C02F2101/308Y02W10/37
Inventor 简刚董瑞
Owner JIANGSU UNIV OF SCI & TECH
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