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Efficient photocatalytic reduction of aqueous Cr(VI) over porous BNNSs/TiO2 nanocomposites under visible light irradiation

journal contribution
posted on 2016-01-01, 00:00 authored by Dan LiuDan Liu, Mingwen Zhang, Wanjie Xie, Lu Sun, Ying (Ian) ChenYing (Ian) Chen, Weiwei LeiWeiwei Lei
Photocatalytic reduction of aqueous Cr(VI) was successfully achieved on porous boron nitride nanosheets/TiO2 (P-BNNSs/TiO2) composites. Porous boron nitride (BN) nanosheets as a catalyst support material play an important role in extending the optical absorption spectrum of TiO2 into the visible light region. The photocatalytic reduction of aqueous Cr(VI) by P-BNNSs/TiO2 composites was evaluated under simulated solar light (λ > 300 nm) and visible light (λ > 420 nm) irradiation. The P-BNNSs/TiO2 composites exhibit excellent removal efficiency of Cr(VI) (∼99%). The excellent photocatalytic activity of P-BNNSs/TiO2 composites in the visible-light region is derived from their large surface area, which induces a strong absorption of pollutants and a lower recombination rate of electron–hole pairs.

History

Journal

Catalysis science & technology

Volume

6

Issue

23

Pagination

8309 - 8313

Publisher

Royal Society of Chemistry

Location

Cambridge, Eng.

ISSN

2044-4753

eISSN

2044-4761

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2016, Royal Society of Chemistry