Fabrication of Ag@SrTiO3/g-C3N4 heterojunctions for H2 production and the degradation of pesticides under visible light

被引：31
作者：
Ahamad, Tansir [1 ]
Alshehri, Saad M. [1 ]
机构：
[1] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2022年 / 297卷
关键词：
Photocatalyst; H-2-production; Pesticide; RT-FS; Mott-Schottky plot; PHOTOCATALYTIC DEGRADATION; DOPED SRTIO3; HYDROGEN-PRODUCTION; CHARGE-TRANSFER; CARBON NITRIDE; EFFICIENT; AG; REMOVAL; DICOFOL; NANOCOMPOSITES;
D O I：
10.1016/j.seppur.2022.121431
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
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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页数：11
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