Rational Optimization of 2D Bi2MoO6 Nanopiece @ 2D g‐C3N4 Nanoflake Composite for Boosting Photocatalytic Performance of HER and ODR
Zhentao Wang, Jingjing Wang, Waheed Iqbal, Yuxin Qiao, Shuxin Liu, Chuanguang Qin - Inorganic Chemistry
- Organic Chemistry
- Pollution
- Waste Management and Disposal
- Fuel Technology
- Renewable Energy, Sustainability and the Environment
- General Chemical Engineering
- Biotechnology
Abstract
BACKGROUND
Preparing catalysts with heterojunction structures is a strategy to achieve efficient charge separation and transfer of charges to enhance photocatalytic activity of photocatalysts. To optimize the graphitic carbon nitride (g‐C3N4) based photocatalysts, Bi2MoO6/@ 2D g‐C3N4 catalyst was prepared.
RESULTS
2D Bi2MoO6 nanopiece @ 2D g‐C3N4 nanoflake composites in different proportions were prepared by hydrothermal method. The prepared materials were characterized by various modern instrumental analysis, and their photocatalytic ability to decompose water and degrade rhodamine B under visible light irradiation was tested. Compared with pure Bi2MoO6 nanopiece and g‐C3N4 nanoflake, the hydrogen evolution rate (HER) of Bi2MoO6 nanopiece @ g‐C3N4 nanoflake (1:10) composite was the highest, which was 4847 μmol‧h−1‧g−1. While the composite (3:10) exhibits significantly enhanced photocatalytic rhodamine B degradation for organic dye removal (ODR) due to the formation of the excellent heterojunction to improve the separation and migration efficiency of photogenerated carriers.
CONCLUSION
O2− and ·OH were the two main active species in the photocatalytic degradation of RhB. Bi2MoO6 formed a heterojunction with g‐C3N4, which accelerated the separation and migration efficiency, thereby enhancing the photocatalytic activity.
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