TY - JOUR
T1 - BiOCl and TiO2 deposited on exfoliated ZnCr-LDH to enhance visible-light photocatalytic decolorization of Rhodamine B
AU - Liu, Qing
AU - Ma, Jianfeng
AU - Wang, Kai
AU - Feng, Ting
AU - Peng, Mingguo
AU - Yao, Zesheng
AU - Fan, Canghai
AU - Komarneni, Sridhar
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant No. 21477009), Natural Science Foundation of Jiangsu Province (SBK2016021419) and Open foundation of Key Laboratory of Mineralogy and Metallogeny, Chinese Academy of Sciences (KLMM20150102). The TEM characterization was under the support of Dr. Xiazhang Li. One of us (SK) was supported by the College of Agricultural Sciences under Station Research Project No. PEN04566.
Publisher Copyright:
© 2017 Elsevier Ltd and Techna Group S.r.l.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - A series of novel TiO2-BiOCl-ZnCr-Ex composites for use as photocatalysts were synthesized via a facile solvothermal process using an exfoliated ZnCr-LDH (ZnCr-Ex) and depositing BiOCl and TiO2 sequentially on the surface of ZnCr-Ex. The composites were characterized by XRD, TEM, SEM-EDS and UV–vis diffuse reflectance spectroscopy. In these composites, the BiOCl nanosheets were deposited first on the surfaces of ZnCr-Ex and then the TiO2 nanoparticles were dispersed on the surface of BiOCl-ZnCr-Ex material as were seen from SEM and TEM analyses. The photocatalytic degradation of Rhodamine B (RhB) indicated that the TiO2-BiOCl-ZnCr-Ex composite showed much higher visible-light photocatalytic activity for degradation of RhB than TiO2 alone, BiOCl alone or the BiOCl-ZnCr-Ex by itself. The possible mechanisms of photocatalytic activity were discussed. Moreover, the present composite photocatalysts exhibited satisfactory re-usability for at least three cycles. Because of the facile synthesis process, higher photocatalytic activity under visible light irradiation and satisfactory re-usability of these composites, they can be touted as potential catalysts for degradation of organic pollutants in wastewater treatment.
AB - A series of novel TiO2-BiOCl-ZnCr-Ex composites for use as photocatalysts were synthesized via a facile solvothermal process using an exfoliated ZnCr-LDH (ZnCr-Ex) and depositing BiOCl and TiO2 sequentially on the surface of ZnCr-Ex. The composites were characterized by XRD, TEM, SEM-EDS and UV–vis diffuse reflectance spectroscopy. In these composites, the BiOCl nanosheets were deposited first on the surfaces of ZnCr-Ex and then the TiO2 nanoparticles were dispersed on the surface of BiOCl-ZnCr-Ex material as were seen from SEM and TEM analyses. The photocatalytic degradation of Rhodamine B (RhB) indicated that the TiO2-BiOCl-ZnCr-Ex composite showed much higher visible-light photocatalytic activity for degradation of RhB than TiO2 alone, BiOCl alone or the BiOCl-ZnCr-Ex by itself. The possible mechanisms of photocatalytic activity were discussed. Moreover, the present composite photocatalysts exhibited satisfactory re-usability for at least three cycles. Because of the facile synthesis process, higher photocatalytic activity under visible light irradiation and satisfactory re-usability of these composites, they can be touted as potential catalysts for degradation of organic pollutants in wastewater treatment.
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U2 - 10.1016/j.ceramint.2017.01.119
DO - 10.1016/j.ceramint.2017.01.119
M3 - Article
AN - SCOPUS:85010533645
SN - 0272-8842
VL - 43
SP - 5751
EP - 5758
JO - Ceramics International
JF - Ceramics International
IS - 7
ER -