期刊
APPLIED SURFACE SCIENCE
卷 591, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2022.153205
关键词
Bi2S3 nanorods; Near-infrared-light-driven; Photocatalytic nitrogen fixation; Sulfur vacancies
类别
资金
- National Natural Science of China [22178038, 21878031]
In this study, different concentrations of sulfur vacancies were introduced to orthorhombic phase Bi2S3 nanorods, which exhibited remarkable photocatalytic nitrogen fixation performance, especially under full solar irradiation and near-infrared light.
Herein, orthorhombic phase Bi2S3 nanorods with different concentration of sulfur vacancies (SVs) were controllably synthesized via a facile solvothermal strategy. Benefited from the high specific surface area, proper band gap, good reduction capacity and abundant SVs, the Bi2S3 nanorods exhibit remarkable photocatalytic nitrogen fixation performance. The ammonia yield of the sulfur-vacancy-rich Bi2S3-3 is around 51.04 mu mol g-1 h-1 under full solar irradiation. Moreover, Bi2S3-3 also responds sensitively to near-infrared (NIR) light, and the nitrogen reduction rate is 33.37 mu mol g-1 h-1. The superior photocatalytic performance of Bi2S3 is mainly attributed to SVs, which can absorb nitrogen and afford plentiful active sites to activate molecular nitrogen. Moreover, SVs also can trap the photoinduced electrons and contribute to the separation of the interfacial charge. This work provides a promising and sustainable defect-rich photocatalyst for the fixation of atmospheric nitrogen using solar energy.
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