材料科学
上部结构
堆积
光催化
奥斯特瓦尔德成熟
异质结
量子产额
化学物理
纳米技术
结晶学
光电子学
荧光
光学
催化作用
物理
核磁共振
化学
地质学
海洋学
生物化学
作者
Qiutong Han,Xiaowan Bai,Jingming Chen,Shengnan Feng,Wa Gao,Wenguang Tu,Xiaoyong Wang,Jinlan Wang,Bi Jia,Qing Shen,Yong Zhou,Zhigang Zou
标识
DOI:10.1002/adma.202006780
摘要
Abstract The unique InVO 4 mesocrystal superstructure, particularly with cubical skeleton and hollow interior, which consists of numerous nanocube building blocks, closely stacking by stacking, aligning by aligning, and sharing the same crystallographic orientations, is successfully fabricated. The synergy of a reaction‐limited aggregation and an Ostwald ripening process is reasonably proposed for the growth of this unique superstructure. Both single‐particle surface photovoltage and confocal fluorescence spectroscopy measurements demonstrate that the long‐range ordered mesocrystal superstructures can significantly retard the recombination of electron–hole pairs through the creation of a new pathway for anisotropic electron flow along the inter‐nanocubes. This promising charge mobility feature of the superstructure greatly contributes to the pronounced photocatalytic performance of the InVO 4 mesocrystal toward fixation of N 2 into NH 3 with the quantum yield of 0.50% at wavelength of 385 nm.
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