层状双金属氢氧化物基光催化剂研究进展

发布时间：2019-01-09 09:33

【摘要】：层状双金属氢氧化物(LDHs)具有组分可调、层板金属离子高度分散、层间阴离子可交换、拓扑转变等特性,使其可作为理想的光催化剂、催化剂载体或前驱体。作为一种新型多功能材料,LDHs基光催化剂在环境净化、能源储备、工业催化和生物医学等多个领域广泛应用。但是,选择合适的路径进一步优化LDHs基光催化剂的性能,以实现太阳能的高效利用及催化反应过程的高转化率和高选择性仍然具有很大的挑战性。本文依据LDHs的结构特点及活性组分引入方式,将LDHs基光催化剂的制备方法总结归纳为主体层板构筑法、客体插层敏化法、剥离层层组装法、复合材料杂化法四类,详细介绍了不同制备方法对光催化性能的影响,综述其最新研究进展;并结合LDHs基光催化材料的应用,介绍其光催化行为和机理;最后,对LDHs基光催化剂的应用前景进行分析和展望。
[Abstract]:Layered bimetallic hydroxide (LDHs) can be used as an ideal photocatalyst, catalyst carrier or precursor because of its adjustable composition, highly dispersed metal ions, interlayer anion exchange and topological transition. As a new multifunctional material, LDHs based photocatalyst is widely used in many fields, such as environmental purification, energy storage, industrial catalysis and biomedicine. However, it is still very challenging to choose the appropriate path to optimize the performance of LDHs based photocatalyst in order to realize the efficient utilization of solar energy and the high conversion and selectivity of catalytic reaction process. According to the structural characteristics of LDHs and the way of introducing active components, the preparation methods of LDHs based photocatalysts are summarized into four categories: main layer building method, guest intercalation sensitization method, stripping layer assembly method, composite material hybrid method. The effects of different preparation methods on photocatalytic properties were introduced in detail, and the latest research progress was reviewed. The photocatalytic behavior and mechanism of LDHs based photocatalytic materials are introduced. Finally, the application prospect of LDHs based photocatalysts is analyzed and prospected.
【作者单位】：同济大学污染控制与资源化研究国家重点实验室;
【基金】：国家自然科学基金项目(41372241)资助
【分类号】：O643.36

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