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S ize controllable ZnS nanospheres : synthesis and enhanced photocatalytic activity

CHAO JIAO1, WEI QING HUANG1,* , GUI FANG HUANG1,* , ZHI-DAN SU2, MING-GANG XIA2, ZHENG-M EI YANG1, ZHUO WAN1, QING-LIN ZHANG1

Affiliation

  1. Department of Applied Physics, Key Laboratory for Micro Na no Physics and Technology of Hunan Province, Hunan University, Changsha 410082, China
  2. MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Center on Experimental Physics, School of Science, Xi’an Jiaotong University, 710049 China

Abstract

Increasing specific surface area and high index facets of photocatalyst is vital to enhance photocatalytic properties. We report here that well dispersed and uniform ZnS nanospheres with controllable size have been synthesized via a low cost and s imple chemical bath deposition. It is interesting that both t he size and high-index facets of ZnS nanospheres can be modulated only by tuning bath temperature. The porous ZnS nanospheres prepared at 95 possess the highest catalytic activity due to the larger specific area , as well as easier separation of electron hole pairs by photoexcitation. The results indicate that the porous ZnS nanospheres a re promising candidate materials for photocatalysts. Our results shed new light on the preparation of highly efficient semiconductor photocatalysts used in environmental remediation applications..

Keywords

ZnS, photocatalytic activity, S pecific surface area, C hemical bath deposition.

Citation

CHAO JIAO, WEI QING HUANG, GUI FANG HUANG, ZHI-DAN SU, MING-GANG XIA, ZHENG-M EI YANG, ZHUO WAN, QING-LIN ZHANG, S ize controllable ZnS nanospheres : synthesis and enhanced photocatalytic activity, Optoelectronics and Advanced Materials - Rapid Communications, 8, 7-8, July-August 2014, pp.647-652 (2014).

Submitted at: Oct. 28, 2013

Accepted at: July 10, 2014