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Shape-controllable SrTiO3 flowerlike series nanomaterial preparation and application

A flower-shaped and topographical technology, applied in chemical/physical processes, light water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as limited applications, achieve rich specific surface, easy to recycle and reuse, The effect of the simple method of preparation conditions

Pending Publication Date: 2019-07-26
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, SrTiO 3 The wide bandgap (about 3.2 eV) limits its application in visible-light-driven photocatalytic degradation of pollutants or water splitting

Method used

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  • Shape-controllable SrTiO3 flowerlike series nanomaterial preparation and application
  • Shape-controllable SrTiO3 flowerlike series nanomaterial preparation and application
  • Shape-controllable SrTiO3 flowerlike series nanomaterial preparation and application

Examples

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Embodiment 1

[0024] Example 1: After 25 mL of ethylene glycol and 3.40 mL of tetrabutyl titanate (TBOT) were mixed uniformly, 20 mL of strontium nitrate aqueous solution was added, and finally 15 mL of NaOH was added, and the reaction system was continuously stirred to achieve uniformity. After that, the solution was transferred to a 100 mL hydrothermal reactor and kept at 200°C for a certain period of time.

[0025] Such as figure 1 , 2 As shown in the scanning electron micrographs of, 3, 4, and 5, the SrTiO prepared in this embodiment 3 The photocatalyst is formed from nano-particles to flower buds to flower cages under different hydrothermal time conditions, and the final product is micron-sized flower spherical SrTiO 3 In the whole reaction process, there is no additional template and organic solvent added. Through simple and environmentally friendly hydrothermal methods, the reaction time can be adjusted to obtain SrTiO with several typical product morphologies (especially different sizes ...

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PUM

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Abstract

The invention relates to a flowerlike SrTiO3 photocatalyst preparation method. The method includes that shape-controllable flowerlike SrTiO3 photocatalytic materials are greenly and efficiently synthesized without use of organic templates. The method has advantages that under the condition that adding of any surfactants and template agents is avoided, a series of SrTiO3 photocatalytic materials indifferent surface appearances are obtained according to a simple hydrothermal method by reaction time modulation, and a structure-activity relationship is researched through photocatalytic reaction while self-assembly process control is realized.

Description

Technical field [0001] The invention belongs to the technical field of nano-material preparation and application, and relates to a curd-shaped series of SrTiO with controllable morphology 3 Controllable preparation and application of photocatalyst. Background technique [0002] In the past few decades, people's concerns about global environmental pollution and fossil energy shortages have increased, which has triggered a lot of research on advanced methods such as environmental governance and energy conversion. The first TiO photocatalyst was reported in 1972 2 In the electrode water decomposition process, a lot of attention has been focused on the environmental improvement and energy conversion of photocatalytic technology. Through years of research, photocatalysis has been recognized as an economical and environmentally friendly technology, which can be applied to pollution purification, solar-driven water splitting and CO 2 Reduction, as well as organic photosynthesis. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00B01J23/02B01J35/08B01J35/10B01J32/00C02F1/32C02F101/34C02F101/38
CPCC01G23/006B01J23/002B01J23/02C02F1/32C02F2101/38C02F2101/34C02F2305/10C01P2004/32B01J35/40B01J35/51B01J35/61B01J35/39
Inventor 周满陈敬文李忠玉
Owner CHANGZHOU UNIV
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