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Research Progress on Synthesis of Layered Double Hydroxides(LDHs) and Their Applications in Photocatalysis(PDF)

MATERIALS CHINA[ISSN:1674-3962/CN:61-1473/TG]

Issue:
2019年第02期
Page:
91-97
Research Field:
Publishing date:

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Title:
Research Progress on Synthesis of Layered Double Hydroxides(LDHs) and Their Applications in Photocatalysis
Author(s):
LI Haijin1; HAN Qiutong2; JIA Hu1; ZHOU Yong2; ZOU Zhigang2
1. School of Mathematics and Physics, Anhui University of Technology, Maanshan 243002, China
2. EcoMaterials and Renewable Energy Research Center, Jiangsu Key Laboratory for Nano Technology,School of Physics, Nanjing University, Nanjing 210093, China
Keywords:
layered double hydroxides;  synthesis methods;  photocatalysis;  photoelectrocatalysis;  outlook
CLC:

PACS:
-
DOI:
10.7502/j.issn.1674-3962.2019.02.02
DocumentCode:

Abstract:
Layered double hydroxides (LDHs) photocatalysts have emerged as one of the most ideal photocatalysts, owing to their flexibility in composition of hydroxide layer, facile exchange ability of interlayer anions and a range of intercalation molecule, and high specific surface areas. LDHs photocatalysts were prepared by coprecipitation, hydrothermal method, ion exchange route, and other techniques. As one of the promising photocatalysts, the research progress and application of LDHs photocatalysts in photocatalytic and/or photoelectrocatalytic O2 generation and H2 evolution, photoreduction of CO2, and photodegradation of organic pollutants are reviewed. Despite the many recent advances in photocatalytic performance of LDHs, the low photocatalytic efficiency of LDHs is always a key factor and great challenge to restrict the practical application of this technology. For high conversion efficiency of photocatalytic reaction, some strategies may be adoped to enhance the photocatalytic efficiencies of LDHs: ① development of new synthesis methods to controllably produce LDHs with an optimum compositions and nanostructures; ② exploration of advanced insitu tehniques to directly characterize microdynamic reaction process and correlations between photocatalytic properties and influence factor for LDHs photocatalysts under reaction condition; ③ design of novel LDHsbased photocatalysts to achieve high photocatalytic efficiency by the aid of synergistic enhancement in photon absorption and utilization, the separation of photogenerated carriers and surface photocatalytic reaction efficiency.

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Last Update: 2019-01-30