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A biomimetic approach towards the synthesis of TiO₂/carbon-clay as a highly recoverable photocatalyst
journal contribution
posted on 2018-01-15, 00:00 authored by Shu Huang, Xi Lu, Zhenyu Li, Harish Ravishankar, Jinfeng Wang, Xungai WangEfficient use of sunlight for cleaning polluted water is a sustainable way of addressing the key environmental problems. Photocatalysts with high adsorption, good photocatalytic ability and highly recoverable performance are highly desirable to effective clean organic contaminates from water. In this study, a highly recoverable TiO 2 /carbon-clay photocatalyst was prepared by immobilizing TiO 2 (commercial P25) on strong adsorbent (clay) via a bio-mimetic coating strategy and followed by a carbonization process. Superior separability of TiO 2 /carbon-clay was achieved by simple gravity sedimentation, in which most of TiO 2 /carbon-clay settled within 5 min and all the particles settled within 2 h. The obtained TiO 2 /carbon-clay composites possessed a maximum adsorption capacity (Q max ) of 95.4 mg/g and showed high photocatalytic activity, which removed 99% dye within 30 min under simulated sunlight irradiation. This TiO 2 /carbon-clay composites also exhibited excellent durability and no apparent reduction of dye removal efficiency was observed after 5 cycles reuse.
History
Journal
Journal of Photochemistry and Photobiology A: ChemistryVolume
351Pagination
131 - 138Publisher
Elsevier B.V.Location
Amsterdam, The NetherlandsPublisher DOI
ISSN
1010-6030Language
engPublication classification
C1 Refereed article in a scholarly journal; C Journal articleCopyright notice
2017, Elsevier B.V.Usage metrics
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