Mo-Modified ZnIn_2S_4@NiTiO_3 S-Scheme Heterojunction with Enhanced Interfacial Electric Field for Efficient Visible-Light-Driven Hydrogen Evolution

Jiafeng Zhu; Qingyuan Bi; Yinghao TaoWenyao GuoJinchen FanYulin MinGuisheng Li

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Mo-Modified ZnIn_2S_4@NiTiO_3 S-Scheme Heterojunction with Enhanced Interfacial Electric Field for Efficient Visible-Light-Driven Hydrogen Evolution

机译：Mo-Modified ZnIn_2S_4@NiTiO_3 S-Scheme Heterojunction with Enhanced Interfacial Electric Field for Efficient Visible-Light-Driven Hydrogen Evolution

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摘要

Designing and developing visible-light-responsive materials for solar tochemical energy is an efficient and promising approach to green and sustainablecarbon-neutral energy systems. Herein, a facile in situ growth hydrothermalstrategy using Mo-modified ZnIn_2S_4 (Mo-ZIS) nanosheets coupledwith NiTiO_3 (NTO) microrods to synthesize multifunctional Mo-modifiedZIS wrapped NTO microrods (Mo-ZIS@NTO) photocatalyst with enhancedinterfacial electric field (IEF) effect and typical S-scheme heterojunction isreported. Mo-ZIS@NTO catalyst possesses wide-spectrum light absorptionproperties, excellent visible light-to-thermal energy effect, electron mobility,charges transfer, and strong IEF and exhibits excellent solar-to-chemicalenergy conversion for efficient visible-light-driven photocatalytic hydrogenevolution. Notably, the engineered Mo_(1.4)-ZIS@NTO catalyst exhibits superiorperformance with H_2 evolution rate of up to 14.06 mmol g~(?1) h~(?1) and theapparent quantum efficiency of 44.1 at 420 nm. The scientific explorationsprovide an in-depth understanding of microstructure, S-scheme heterojunction,enhanced IEF, Mo-dopant facilitation effect. Moreover, the theoreticalsimulations verify the critical role of Mo element in promoting the adsorptionand activation of H_2O molecules, modulating the H adsorption behavior onactive S sites, and thus accelerating the overall catalytic efficiency. The photocatalytichydrogen evolution mechanism via S-scheme heterojunction withadjustable IEF regulation over Mo_(1.4)-ZIS@NTO is also demonstrated.

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来源
《Advanced functional materials》 |2023年第15期|2213131.1-2213131.12|共12页
作者
Jiafeng Zhu; Qingyuan Bi; Yinghao TaoWenyao GuoJinchen FanYulin MinGuisheng Li;
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作者单位

Shanghai Key Laboratory of Materials Protection and AdvancedMaterials in Electric PowerCollege of Environmental and Chemical EngineeringShanghai University of Electric PowerShanghai 200090, P. R. China;

School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093, P. R. China;

Shanghai Key Laboratory of Materials Protection and AdvancedMaterials in Electric PowerCollege of Environmental and Chemical EngineeringShanghai University of Electric PowerShanghai 200090, P. R. China, School of Materials and ChemistryUniversity of Shang;

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H adsorption/desorption; interfacial electric fields; Mo-doped ZnIn_2S_4; S-scheme heterojunction modifications; visible light H_2 evolution;

Mo-Modified ZnIn_2S_4@NiTiO_3 S-Scheme Heterojunction with Enhanced Interfacial Electric Field for Efficient Visible-Light-Driven Hydrogen Evolution

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