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Published on: September 22, 2015
Photocatalytic reduction of Cr (VI) on nano-sized red phosphorus under visible light irradiation
Donghui Li1, Jiaojiao Li1, Qianwei Jin1
1College of Chemistry and Molecular Engineering, Key Laboratory of Environmental Chemistry and Low Carbon Technologies of Henan Province, Zhengzhou University, Zhengzhou, Henan 450001, PR China.
Abstract:
Red phosphorus as a novel visible-light-responsive and metal-free photocatalyst has attracted extensive attention in the area of energy conversion and environmental remediation. Herein, nano-sized red phosphorus photocatalyst was synthesized via a hydrothermal and ultrasonic method and used for reduction of Cr (VI) for the first time. The as-prepared photocatalysts were characterized by XRD, UV-Vis-DRS, XPS, SEM, TEM and photoelectrochemical measurements. Compared to bulk red phosphorus, nano-sized red phosphorus exhibit a significantly enhanced photocatalytic activity for reduction of Cr (VI) due to the greatly reduced charge transfer resistance and enhanced adsorption capability of Cr (VI).
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