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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 WangXungai Wang
Efficient 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.



Journal of Photochemistry and Photobiology A: Chemistry




131 - 138


Elsevier B.V.


Amsterdam, The Netherlands





Publication classification

C1 Refereed article in a scholarly journal; C Journal article

Copyright notice

2017, Elsevier B.V.