Dual S-scheme Bi2MoO6/g-C3N4/Ag2MoO4 ternary heterojunction: Interfacial charge transfer, broadband spectrum, enhanced redox ability

被引:11
作者
Hasija, Vasudha [1 ]
Khan, Aftab Aslam Parwaz [2 ]
Sonu [1 ]
Katin, Konstantin P. [3 ]
Kaya, Savas [4 ]
Singh, Pardeep [1 ]
Raizada, Pankaj [1 ]
Asad, Mohammad [2 ]
Rub, Malik Abdul [2 ]
Alzahrani, Khalid A. [2 ,5 ]
机构
[1] Shoolini Univ, Sch Adv Chem Sci, Solan 173212, Himachal Prades, India
[2] King Abdulaziz Univ, Ctr Excellence Adv Mat Res, Jeddah 21589, Saudi Arabia
[3] Natl Res Nucl Univ MEPhI, Lab Nanomat Elect Photon & Spintron, 31 Kashirskoe Sh, Moscow 115409, Russia
[4] Sivas Cumhuriyet Univ, Fac Sci, Dept Chem, TR-58140 Sivas, Turkiye
[5] King Abdulaziz Univ, Fac Sci, Chem Dept, Jeddah 21589, Saudi Arabia
关键词
Sulfamethoxazole; Dual S-Scheme; Photocatalytic degradation; G-C3N4; Bi2MoO6; Ag2MoO4; WATER; GENERATION;
D O I
10.1016/j.solidstatesciences.2024.107693
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A ternary heterojunction bearing Bi2MoO6 and g-C3N4 is deposited on Ag2MoO4 for the photocatalytic degradation of sulfamethoxazole (SMX) antibiotic. Though the hydrothermal synthesis is non-directional, the dual Sscheme heterojunction formation is governed by the g-C3N4 serving as an electron bridge between Bi2MoO6 and Ag2MoO4. The potent strong interaction with both Bi2MoO6 and Ag2MoO4 facilitates high oxidation and reduction potential. The optimized Bi2MoO6/g-C3N4/Ag2MoO4 heterojunction with extended visible light absorption exhibits 96 % SMX degradation efficiency within 240 min of irradiations. The dual S-scheme configuration endows in-built electric field with vigorous driving force for charge carrier separation. The charge transfer mechanisms were validated by the photoluminescence results. Bi2MoO6/g-C3N4/Ag2MoO4 MoO 4 heterojunction demonstrates pseudo-first order kinetics with 0.143 kmin(-1) for SMX degradation and ternary photo-catalyst 83 % degraded SMX after successive five cycles. In the formed dual S-scheme Bi2MoO6/g-C3N4/Ag2MoO4 heterojunction, (OH)-O-center dot and center dot O-2(-) radicals were the main reactive species for SMX degradation. This research contributes to the formation of stable multicomponent photocatalytic systems.
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页数:10
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