Zhou Yong, Wang Guan, Wu Jiahao, Chen Zihao, Zhang Chen, Li Ping, Zhou Yong, Huang Wei
School of Flexible Electronics (SoFE) & Institution of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
School of Physical and Mathematical Sciences, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
Nanomaterials (Basel). 2023 Jan 10;13(2):283. doi: 10.3390/nano13020283.
Ternary orthovanadate compounds have received increasing attention due to their broad light absorption and diverse crystal structure. However, their multi-assembled crystal morphologies are limited mainly due to their initially polyatomic VO groups. In this study, multi-prismatic hollow cubic CeVO microstructures were fabricated by a one-step solvothermal method without any organic agents. The increase in wall thickness is in accordance with the radial direction of the quadrangular prism. Moreover, the overdose of the V precursor is favorable for the formation of hollow micro-cubic CeVO, and the wall thickness changes from 200 to 700 nm. Furthermore, these CeVO microstructures were applied to photocatalytic CO reduction with a maximum CO generation rate of up to 78.12 μmol g h under visible light irradiation, which was several times higher than that of the other samples. This superior photocatalytic activity might be attributed to its good crystallinity and unique exposed interior structure. This study provides guidelines for the multi-assembled structure fabrication of ternary compounds and expands upon the exploration of the spatial structure of multivariate compounds.
由于其广泛的光吸收和多样的晶体结构，三元原钒酸盐化合物受到了越来越多的关注。然而，它们的多组装晶体形态主要受到其初始多原子VO基团的限制。在本研究中，通过一步溶剂热法在没有任何有机试剂的情况下制备了多棱柱空心立方CeVO微结构。壁厚的增加与四棱柱的径向方向一致。此外，V前驱体的过量有利于空心微立方CeVO的形成，壁厚从200nm变化到700nm。此外，这些CeVO微结构被应用于光催化CO还原，在可见光照射下，最大CO生成速率高达78.12 μmol g-1 h-1，这比其他样品高出几倍。这种优异的光催化活性可能归因于其良好的结晶度和独特的暴露内部结构。本研究为三元化合物的多组装结构制备提供了指导，并拓展了对多元化合物空间结构的探索。
