Morphological evolution of hierarchical Bi2Se3/BiOBr nanostructures and enhanced activity for p-nitrophenol reduction by NaBH4

被引：10
|
作者：
Wang, Jianjun [1 ,2 ,3 ]
Tang, Aidong [1 ]
Tan, Lin [1 ]
Yang, Huaming [2 ,3 ]
Ouyang, Jing [2 ,3 ]
机构：
[1] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, Sch Minerals Proc & Bioengn, Ctr Mineral Mat, Changsha 410083, Hunan, Peoples R China
[3] Cent S Univ, Hunan Key Lab Mineral Mat & Applicat, Changsha 410083, Hunan, Peoples R China
来源：
CRYSTENGCOMM | 2017年 / 19卷 / 32期
基金：
中国国家自然科学基金;
关键词：
TIO2 NANOTUBE ARRAYS; BISMUTH SELENIDE; CATALYTIC-REDUCTION; SOLVOTHERMAL SYNTHESIS; ELECTRONIC-STRUCTURE; BIOX X; SB2SE3; GROWTH; NANOFIBERS; STABILITY;
D O I：
10.1039/c7ce01025g
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An emerging Bi2Se3/BiOBr composite with a flower-like microsphere structure has been synthesized by a solvothermal method using CTAB as a template agent. It is found that the obtained Bi2Se3/BiOBr composite showed a good catalytic performance for the hydrogenation of p-nitrophenol. The catalytic times of the conversion of up to 90% for the Bi2Se3/BiOBr composite, Bi2Se3 and BiOBr are about 5.0, 12.5 and 15.0 min, respectively. The enhanced catalytic activity of the Bi2Se3/BiOBr composite results from a synergistic effect of Bi2Se3 and BiOBr, probably owing to the unique structure, and the combination promotes the transfer of electrons. A self-assembling growth mechanism of the Bi2Se3/BiOBr composite is proposed by observing the morphology and composition of the products at different times. It is found that BiOBr micro spheres first formed, then BiOBr microspheres gradually reacted with selenium powder to grow the Bi2Se3/BiOBr composite.
引用
收藏
页码：4824 / 4831
页数：8
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