Interior and Surface Synergistic Modifications Modulate the SnNb2O6/Ni-Doped ZnIn2S4 S-Scheme Heterojunction for Efficient Photocatalytic H2 Evolution

Chunxue Li; Xiaoteng Liu; Guixiang Ding; Pengwei Huo; Yan Yan; Yongsheng Yan; Guangfu Liao

doi:10.1021/acs.inorgchem.1c03936

Interior and Surface Synergistic Modifications Modulate the SnNb₂O₆/Ni-Doped ZnIn₂S₄ S-Scheme Heterojunction for Efficient Photocatalytic H₂ Evolution

Inorg Chem. 2022 Mar 21;61(11):4681-4689. doi: 10.1021/acs.inorgchem.1c03936. Epub 2022 Mar 8.

Authors

Chunxue Li¹, Xiaoteng Liu¹, Guixiang Ding², Pengwei Huo¹, Yan Yan¹, Yongsheng Yan¹, Guangfu Liao³

Affiliations

¹ Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
² Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China.
³ Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, China.

PMID: 35258950
DOI: 10.1021/acs.inorgchem.1c03936

Abstract

Interior and surface synergistic modifications can endow the photocatalytic reaction with tuned photogenerated carrier flow at the atomic level. Herein, a new class of 2D/2D SnNb₂O₆/Ni-doped ZnIn₂S₄ (SNO/Ni-ZIS) S-scheme heterojunctions is synthesized by a simple hydrothermal strategy, which was used to evaluate the synergy between interior and surface modifications. Theoretical calculations show that the S-scheme heterojunction boosts the desorption of H atoms for rapid H₂ evolution. As a result, 25% SNO/Ni_0.4-ZIS exhibits significantly improved PHE activity under visible light, roughly 4.49 and 2.00 times stronger than that of single ZIS and Ni_0.4-ZIS, respectively. In addition, 25% SNO/Ni_0.4-ZIS also shows superior structural stability. This work provides advanced insight for developing high-performance S-scheme systems from photocatalyst design to mechanistic insight.