Enhanced photocatalytic response of ZnO embedded chitosan/β-cyclodextrin towards the detoxification of Cr(VI) under visible light

被引：40
作者：
Preethi, Jayaram [1 ]
Farzana, M. Hasmath [2 ]
Rathinam, Karthik [3 ]
Vigneshwaran, Sivakumar [1 ]
Karthikeyan, Perumal [1 ]
Meenakshi, Sankaran [1 ]
机构：
[1] Gandhigram Rural Inst Deemed Be Univ, Dept Chem, Gandhigram 624302, Tamil Nadu, India
[2] Madura Coll, Dept Chem, Madurai 625011, Tamil Nadu, India
[3] Univ Duisburg Essen, Chair Mech Proc Engn Water Technol, Lotharstr 1, D-47057 Duisburg, Germany
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2020年 / 147卷
关键词：
Chromium; Photo-reduction; Visible irradiation; HEXAVALENT CHROMIUM; BETA-CYCLODEXTRIN; GRAPHENE OXIDE; WASTE-WATER; ADSORPTION; REDUCTION; REMOVAL; DEGRADATION; COMPOSITE; DECOLORIZATION;
D O I：
10.1016/j.ijbiomac.2019.09.246
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The present work focused on the assessment of heterogenous photocatalytic efficacy of ZnO@CS-beta-CD towards the degradation of hexavalent chromium under visible light illumination. The prepared ZnO@CS-beta-CD was extensively characterized using XRD, FTIR, SEM, EDX with mapping, TGA, DSC and UV/vis DRS techniques and the photoreduction of Cr(VI) to Cr(III) was confirmed by X-ray photoelectron spectroscopy. The DRS results revealed that the band gap of ZnO@CS-beta-CD was narrowed than ZnO from 3.23 to 2.01 eV. The photocatalyst hold excellent reusability up to seven cycles and the field trail results demonstrated for the practical application for the treatment of wastewater. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：867 / 876
页数：10
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