期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 297, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2022.121431
关键词
Photocatalyst; H-2-production; Pesticide; RT-FS; Mott-Schottky plot
资金
- King Saud University, Riyadh, Saudi Arabia [RSP-2021/6]
In this study, Ag-doped STO/g-CN heterojunctions were fabricated and characterized for their photo-electrochemical performance and photocatalytic activity. The results demonstrated that the nanocomposites exhibit excellent photocatalytic activity, with high degradation efficiency for Dicofol, and good reusability after multiple cycles.
In the present study, we have fabricated Ag-doped STO/g-CN heterojunctions and the fabricated heterostructure was characterized. The photo-electrochemical performance including PL, photocurrent, (EIS), and TR-FS were also determined. The fabricated nanocomposites were used for the photocatalytic hydrogen production and degradation of the pesticide, Dicofol. Photocatalytic properties (bandgap), band potentials (E-VB and E-CB), and band structures were determined using Mott-Schottky and DSR study. The hydrogen production rate of Ag(3) STO/g-CN was found to be 645.62 mu mol.g(-1)h(-1) which is about 2 times higher than that of pristine STO/g-CN. The formed intermediates and catalytic mechanism for the degradation of Dicofol have supported DFT calculation and LC-MS spectra. The results revealed that the fabricated nanocomposites exhibit ultrafast photocatalytic activity and about 92.2 % degradation was noticed within 60 min. The reusability was carried out and the photocatalyst retains its catalytic activity about 95% after 6 cycles.
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