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Unravelling the mechanistic role of Ti-O-C bonding bridge at titania/lignocellulosic biomass interface for Cr(VI) photoreduction under visible light
Djellabi, Ridha; Yang, Bo; Xiao, Ke; Gong, Yan; Cao, Di; Sharif, Hafiz Muhammad Adeel; Zhao, Xu; Zhu, Caizhen; Zhang, Junmin
2019-10-01
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
Volume553Pages:409-417
AbstractEfficient multifunctional Titania/Lignocellulosic Biomass (TiO2-OP) composite photocatalysts were fabricated via ultrasonic-assisted sol-gel for the photoreduction of Cr(VI) under UV and visible light. Materials were fully characterized using FTIR, XPS, BET, SEM-EDS, UV-DRS, XRD, photo-current and contact angle measurements. It was deduced that the produced Ti-O-C bonding bridge between TiO2 clusters and olive pits lignocellulosic surface exhibits a significant role for the visible light response and band gap narrowing, wherein, E-g values were between 3.02 and 2.63 eV as a function of TiO2/OP ratio. TiO2-OP composites showed an astonishing photocatalytic efficiency, i.e., a complete reduction of Cr(VI) at 10 ppm was found within 30 min with TiO2-OP(50%), against 90 min for TiO2 under UV light. Nevertheless, in terms of TiO2-OP(50%), a total reduction was obtained within 50 min under visible light, while no photoactivity was observed with bare-TiO2. Several plausible mechanistic pathways behind the photocatalytic efficiency of TiO2-OP composites were discussed. 2019 Published by Elsevier Inc.
Department中国科学院饮用水科学与技术重点实验室
KeywordVLR-TiO2 Superwettable photocatalysts Cr(VI) reduction Lignocellulosic biomass Ti-O-C bridge
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43546
Collection中国科学院饮用水科学与技术重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
2.Shenzhen Univ, Coll Chem & Environm Engn, Dept Environm Engn, Shenzhen 518055, Peoples R China
3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Djellabi, Ridha,Yang, Bo,Xiao, Ke,et al. Unravelling the mechanistic role of Ti-O-C bonding bridge at titania/lignocellulosic biomass interface for Cr(VI) photoreduction under visible light[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2019,553:409-417.
APA Djellabi, Ridha.,Yang, Bo.,Xiao, Ke.,Gong, Yan.,Cao, Di.,...&Zhang, Junmin.(2019).Unravelling the mechanistic role of Ti-O-C bonding bridge at titania/lignocellulosic biomass interface for Cr(VI) photoreduction under visible light.JOURNAL OF COLLOID AND INTERFACE SCIENCE,553,409-417.
MLA Djellabi, Ridha,et al."Unravelling the mechanistic role of Ti-O-C bonding bridge at titania/lignocellulosic biomass interface for Cr(VI) photoreduction under visible light".JOURNAL OF COLLOID AND INTERFACE SCIENCE 553(2019):409-417.
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