Lan Qing, Zhang Zhi-Ming, Qin Chao, Wang Xin-Long, Li Yang-Guang, Tan Hua-Qiao, Wang En-Bo
Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, P.R. China.
Institute of New Energy Materials & Low Carbon Technology, School of Material Science & Engineering, Tianjin University of Technology, Tianjin, 300384, P.R. China.
Chemistry. 2016 Oct 17;22(43):15513-15520. doi: 10.1002/chem.201602127. Epub 2016 Sep 8.
Rational design of earth-abundant photocatalysts is an important issue for solar energy conversion and storage. Polyoxometalate (POM)@Co O composites doped with highly dispersive molecular metal-oxo clusters, synthesized by loading a single Keggin-type POM cluster into each confined space of a metal-organic framework (MOF), exhibit significantly improved photocatalytic activity in water oxidation compared to the pure MOF-derived nanostructure. The systematic synthesis of these composite nanocrystals allows the conditions to be tuned, and their respective water oxidation catalytic performance can be efficiently adjusted by varying the thermal treatment temperature and the feeding amount of the POM. This work not only provides a modular and tunable synthetic strategy for preparing molecular cluster@TM oxide (TM=transition metal) nanostructures, but also showcases a universal strategy that is applicable to design and construct multifunctional nanoporous metal oxide composite materials.
合理设计储量丰富的光催化剂是太阳能转化与存储的一个重要问题。通过将单个Keggin型多金属氧酸盐（POM）簇负载到金属有机框架（MOF）的每个受限空间中合成的、掺杂有高度分散的分子金属氧簇的POM@CoO复合材料，与纯MOF衍生的纳米结构相比，在水氧化中表现出显著提高的光催化活性。这些复合纳米晶体的系统合成可以调节条件，并且通过改变热处理温度和POM的进料量，可以有效地调整它们各自的水氧化催化性能。这项工作不仅为制备分子簇@过渡金属氧化物（TM=过渡金属）纳米结构提供了一种模块化且可调节的合成策略，还展示了一种适用于设计和构建多功能纳米多孔金属氧化物复合材料的通用策略。
