Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 203, Issue -, Pages 1-8Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2016.10.003
Keywords
TiO2 nanowires; g-C3N4 nanosheets; Graphene; Photocatalysis
Funding
- National Natural Science Foundation of China [51401239, 21322609, 21576289, 51401157, 11404138]
- Shandong Provincial Natural Science Foundation of China [BS2014CL019]
- Key Program Project of National Natural Science Foundation of China [51231008]
- National 973 program of China [2012CB619403]
- Thousand Talents Program of China
- Science Foundation of China University of Petroleum, Beijing [C201603, 2462015YQ0602]
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A simple self-assembly photochemical reduction method has been proposed to prepare highly photocatalytic TiO2 nanowire/g-C3N4 nanosheet/graphene heterostructures (TiO2/g-C3N4/G). In this hybrid structure, graphene enhances the charge transportation during photocatalytic process, and TiO2 nanowires prevent graphene and g-C3N4 from restacking. Meanwhile, g-C3N4 with a more suitable band gap, extends the adsorption edge of the TiO2/g-C3N4/G composite to visual-region. Benefiting from the positive synergetic effect, 97% of nitrobenzene can be selectively reduced within 4 h by using TiO2/g-C3N4/G as the photocatalyst. The TiO2/g-C3N4/G composite with 3D structure demonstrates a great potential in selective oxidation and reduction of organics for the synthesis of high added-value organic compounds. (C) 2016 Elsevier B.V. All rights reserved.
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