期刊
CERAMICS INTERNATIONAL
卷 46, 期 14, 页码 23165-23172出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.06.096
关键词
Red phosphorus; Porous nanosheets; Photocatalytic hydrogen evolution; Nitrogen fixation; Cr(VI) removal
资金
- National Natural Science Foundation of China [21908187]
- Project of Science & Technology Office of Shaanxi Province [2019JQ-831]
- Scientific Research Foundation of the Education Department of Shaanxi Provincial Government [19JK0966]
- National Students' Innovation and Entrepreneurship Training Programme [201910719046]
- Startup Foundation for Docotors of Yan'an University [YDBK2018-41, YDBK2018-42]
- Research Programme of Yan'an University [YDY2019-23, YDY2019-21]
In this study, a facile and effective solvothermal treatment-coupled ultrasonic exfoliation strategy was developed to prepare porous red phosphorus nanosheets (RP PNS) with a high yield output. N-methyl-2-pyrrolidone (NMP) was chosen as the dispersant agent to avoid the waste of raw RP materials and to enhance the fragmentation efficiency during the size-reduction process. The BET-specific surface area can reach 84.37 m(2)/g, which is the highest value to date. Additionally, the obtained RP PNS sample exhibits an excellent photocatalytic hydrogen evolution rate of 1169.4 mu mol h(-1 )g(-1), a nitrogen fixation rate of 450.4 mu mol h(-1 )g(-1), and a 94.3% removal efficiency of 120 mg/L Cr(VI), which are much higher values than those of block RP and micro RP. The enhanced photocatalytic performance can be attributed to the RP PNS sample having a larger specific surface area, more effective mass transfer through the interconnected porous nanosheets, and a higher charge transfer efficiency and carrier density.
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