In-Situ Growth of Au on KTaO3 Sub-Micron Cubes via Wet Chemical Approach for Enhanced Photodegradation of p-Nitrophenol

被引：5

作者：

Chang, Shengding ^{[1
]}

Ji, Muwei ^{[1
,2
]}

Yan, Changxu ^{[1
]}

Zhang, Kai ^{[1
]}

Deng, Qian ^{[1
]}

Xu, Jian ^{[2
]}

Zhu, Caizhen ^{[2
]}

Li, Bo ^{[1
]}

Wang, Jin ^{[1
]}

机构：

[1] Tsinghua Univ, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China

[2] Shenzhen Univ, Coll Chem & Environm Engn, Inst Low Dimens Mat Genome Initiat, Shenzhen 518060, Peoples R China

来源：

MATERIALS | 2019年 / 12卷 / 12期

基金：

中国国家自然科学基金;

关键词：

in-situ synthesis; KTaO3; Au hetero-nanostructures; concentration of Au source; photo-degradation of p-nitrophenol; POTASSIUM TANTALATE; DOPED KTAO3; PHOTOCATALYSTS; DEGRADATION; 4-NITROPHENOL; NANOCRYSTALS; REDUCTION; OXIDE; IONS;

D O I：

10.3390/ma12121950

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

KTaO3/Au hetero-nanostructures were synthesized by in-situ reduction of HAuCl4 on the surface of hydrothermally-grown KTaO3 sub-micron cubes. The concentration of Au source was found to be a critical factor in controlling the hetero-nucleation of Au nanoparticles on the surface of KTaO3 sub-micron cubes. Loading of Au particles on KTaO3 nanocrystals enriched KTaO3 additional UV-vis absorption in the visible light region. Both KTaO3 and KTaO3/Au nanocrystals were shown to be active in the photo-degradation of p-nitrophenol, while the loading of Au on KTaO3 clearly improved the photo-degradation efficiency of p-nitrophenol compared to that on bare KTaO3 nanocrystals, probably due to the improved light absorption and charge separation.

引用

页数：8

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