کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
64677 | 48365 | 2016 | 8 صفحه PDF | دانلود رایگان |

• 3D h-BN with an interconnected network of h-BN nanosheets was synthesized.
• 3D h-BN was engineered as support of Ag3VO4 through in situ precipitation.
• The h-BN/Ag3VO4 composites showed enhanced photocatalytic activity and stability.
• The h-BN/Ag3VO4 composites showed higher photocurrent responses and absorbance intensity.
• The possible mechanism for the enhanced performance of composite was investigated.
Hexagonal boron nitride (h-BN), with a band gap of ∼5.5 eV, is commonly excluded photocatalysis and photovoltaic conversion application. Herein, we rationally designed 3D h-BN hierarchical architecture with an interconnected network of graphene-analogue h-BN nanosheets and wrapped Ag3VO4 by in-situ precipitation at room temperature. After hybridization, stabilized Ag3VO4 with enhanced photocatalytic activity was obtained and the enhanced activity was fluctuated by the varied addition of h-BN. The 3 wt% h-BN/Ag3VO4 composite exhibited the highest photocatalytic activity for the degradation of RhB under visible light, which was 6.2 times that of bare Ag3VO4. Meanwhile, it showed higher photocurrent responses, which was about 4 times that of pure Ag3VO4. More interestingly, their absorbance intensity were enhanced obviously both in visible and UV light region after hybridization. Structure characterization, as well as the radical trapping experiments were further explored to reveal mechanism of the enhanced activity and stability of h-BN/Ag3VO4 composite. The results provided an alternative simple and convenient route to stabilize photocatalysts prone to photocorrosion with enhanced performance.
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Journal: Journal of Molecular Catalysis A: Chemical - Volumes 418–419, July 2016, Pages 146–153