Shape and stoichiometry control of bismuth selenide nanocrystals in colloidal synthesis

被引：10
|
作者：
Jiang, Yan [1 ]
Hao, Mengmeng [1 ]
Jiang, Liangxing [1 ]
Liu, Fangyang [1 ,2 ]
Liu, Yexiang [1 ]
机构：
[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Peoples R China
[2] Univ New S Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia
来源：
RSC ADVANCES | 2016年 / 6卷 / 53期
关键词：
BI2SE3; EVOLUTION; GROWTH;
D O I：
10.1039/c6ra07570c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Three kinds of Bi-Se nanocrystals (Bi2Se3, Bi8Se9 and Bi1.007Se0.993) have been synthesized via a hot-injection approach. The colloid morphology, from hexagonal to octahedron, strongly depends on the injection temperature. The growth mechanism of Bi-Se nanocrystals is revealed here. A higher temperature could cause the reduction reaction from Bi3+ to Bi, and accelerate the reaction speed of Bi-Se, thus causing a difference of monomer concentration in bulk solution, which impacts the shapes of bismuth selenide nanocrystals as well as the composition. The three Bi-Se nanocrystals also show different optical and photoelectrocatalyst performance.
引用
收藏
页码：47840 / 47843
页数：4
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