Carbon quantum dots decorated MoSe2 photocatalyst for Cr(VI) reduction in the UV-vis-NIR photon energy range

Zhenxing Ren; Xinjuan Liu; Haipeng Chu; Huangze Yu; Yuanyuan Xu; Wei Zheng; Wenyan Lei; Pengbin Chen; Jianwei Li; Can Li

doi:10.1016/j.jcis.2016.10.077

Carbon quantum dots decorated MoSe₂ photocatalyst for Cr(VI) reduction in the UV-vis-NIR photon energy range

J Colloid Interface Sci. 2017 Feb 15:488:190-195. doi: 10.1016/j.jcis.2016.10.077. Epub 2016 Oct 27.

Authors

Zhenxing Ren¹, Xinjuan Liu², Haipeng Chu³, Huangze Yu³, Yuanyuan Xu³, Wei Zheng³, Wenyan Lei³, Pengbin Chen³, Jianwei Li⁴, Can Li³

Affiliations

¹ Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China.
² Institute of Coordination Bond Metrology and Engineering, College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China. Electronic address: lxj669635@126.com.
³ Institute of Coordination Bond Metrology and Engineering, College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China.
⁴ Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Hydrogen Energy Laboratory, Laboratory for Quantum Design of Functional Material, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.

PMID: 27833042
DOI: 10.1016/j.jcis.2016.10.077

Abstract

Developing whole spectrum responsive photocatalysts is one of greatly significant subjects from the viewpoint of using solar energy. Here we have firstly developed a carbon quantum dots-decorated MoSe₂ photocatalyst that is active in the whole spectrum of solar light for Cr(VI) reduction. The Cr(VI) reduction rate of higher than 99% has been achieved with 1wt.% nanocarbon emersions under UV, visible and near-infrared irradiation at 180min. Improvement is attributed to its excellent light absorption, efficient charge separation, and the light down converting effect of carbon quantum dots.

Keywords: Carbon quantum dots; Cr(VI); MoSe(2); Ultraviolet–visible-near infrared active; Up-converting properties.