Issue 32, 2017

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

Abstract

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 microspheres first formed, then BiOBr microspheres gradually reacted with selenium powder to grow the Bi2Se3/BiOBr composite.

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

Supplementary files

Article information

Article type
Paper
Submitted
31 May 2017
Accepted
20 Jul 2017
First published
20 Jul 2017

CrystEngComm, 2017,19, 4824-4831

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

J. Wang, A. Tang, L. Tan, H. Yang and J. Ouyang, CrystEngComm, 2017, 19, 4824 DOI: 10.1039/C7CE01025G

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