Z-Scheme 2D/2D Heterojunction of Black Phosphorus/Monolayer Bi2WO6 Nanosheets with Enhanced Photocatalytic Activities.

Z-Scheme 2D/2D Heterojunction of Black Phosphorus/Monolayer Bi2WO6 Nanosheets with Enhanced Photocatalytic Activities. Angew Chem Int Ed Engl. 2019 Jan 02;: Authors: Hu J, Chen D, Mo Z, Li N, Xu Q, Li H, He J, Xu H, Lu JM Abstract Black phosphorus (BP), a star-shaped two-dimensional material, has attracted considerable attention owing to its unique chemical and physical properties. BP shows great potential in photocatalysis area because of its excellent optical properties; however, its applications in this field have been limited to date. Herein, we design and fabricate a Z-Scheme heterojunction of 2D/2D BP/monolayer Bi2WO6 (MBWO) by a simple and effective method. The BP/MBWO heterojunction exhibits enhanced photocatalytic performance in photocatalytic water splitting to produce H2 and NO removal to purify air; the highest H2 evolution rate of BP/MBWO is 21042 μmol g-1, is 9.15 times that of pristine MBWO and the NO removal ratio was as high as 67%. A Z-Scheme photocatalytic mechanism is proposed based on monitoring of •O2-, •OH, NO2, and NO3- species in the reaction. This work broadens applications of BP and highlights its promise in the treatment of environmental pollution and renewable energy issues. PMID: 30600591 [PubMed - as supplied by publisher]
Source: Angewandte Chemie - Category: Chemistry Authors: Tags: Angew Chem Int Ed Engl Source Type: research