光催化
Boosting(机器学习)
材料科学
催化作用
纳米技术
化学
计算机科学
有机化学
人工智能
作者
Jian Yang,Yujun Liang,Kai Li,Gui Yang,Kun Wang,Rui Xu,Xianjun Xie
标识
DOI:10.1016/j.apcatb.2019.118252
摘要
Abstract Constructing homojunctions with different morphologies, exposing facets, crystal phases or semiconductor types in a photocatalyst is an essential approach to boost the photoactivity. Herein, the g-C3N4 phase homojunctions decorated with cyano groups and K+ were designed and successfully synthesized via only adjusting the reaction temperatures within a facile one-step molten salt route. Such unique junctions were constructed through the overgrowth of triazine-based g-C3N4 nanoparticles embedded in the surface and inner wall of heptazine-based g-C3N4 hollow tubes. Benefited from the multiple advantages of high specific surface area, unique tubular structure, enhanced visible light absorption, and fast charge transfer and separation, the triazine-/heptazine-based g-C3N4 homojunctions drastically enhanced the photocatalytic hydrogen production performance, achieving a 2 and 12-fold improvement than the pristine g-C3N4 microtube and bulk g-C3N4, respectively. This study provides an in-depth insight into the design and fabrication of other g-C3N4-based photocatalysts for more efficient solar energy conversion applications.
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