Environmentally benign chitosan as reductant and supporter for synthesis of Ag/AgCl/chitosan composites by one-step and their photocatalytic degradation performance under visible-light irradiation

Hao WANG , Yuhan WU , Pengcheng WU , Shanshan CHEN , Xuhong GUO , Guihua MENG , Banghua PENG , Jianning WU , Zhiyong LIU

Front. Mater. Sci. ›› 2017, Vol. 11 ›› Issue (2) : 130 -138.

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Front. Mater. Sci. ›› 2017, Vol. 11 ›› Issue (2) :130 -138. DOI: 10.1007/s11706-017-0383-y
RESEARCH ARTICLE
RESEARCH ARTICLE
Environmentally benign chitosan as reductant and supporter for synthesis of Ag/AgCl/chitosan composites by one-step and their photocatalytic degradation performance under visible-light irradiation
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Abstract

A novel Ag/AgCl/chitosan composite photocatalyst was successfully prepared by a simple one-step method. During this progress, environmentally benign chitosan not only served as reductant to reduce Ag+ to Ag0 species, but also acted as supporter for Ag/AgCl nanoparticles. XRD, SEM, EDX, UV-vis DRS and XPS were employed to characterize the as-prepared simples. SEM images of Ag/AgCl/chitosan composites revealed that Ag/AgCl nanoparticles were successfully loaded onto chitosan without obvious aggregation. All Ag/AgCl/chitosan composites exhibited efficient photocatalytic activity for the degradation of rhodamine B (RhB) under visible-light irradiation. The result of photocatalytic degradation experiment indicated that 20% of the mass ratio of AgCl to chitosan was the optimum, and after 40 min photocatalytic reaction, the degradation rate reached about 96%.

Keywords

Ag/AgCl / surface plasmon resonance / one-step / chitosan / photocatalysis

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Hao WANG, Yuhan WU, Pengcheng WU, Shanshan CHEN, Xuhong GUO, Guihua MENG, Banghua PENG, Jianning WU, Zhiyong LIU. Environmentally benign chitosan as reductant and supporter for synthesis of Ag/AgCl/chitosan composites by one-step and their photocatalytic degradation performance under visible-light irradiation. Front. Mater. Sci., 2017, 11 (2) : 130-138 DOI:10.1007/s11706-017-0383-y

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