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Facet-dependent spatial charge separation in a metal-doped SrTiO3 photocatalyst with visible light utilization
Xueshang Xin1,2, Shiwen Du1, Yejun Xiao3
1State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China. fxzhang@dicp.ac.cn.
None:
Visible-light-responsive Rh/Sb co-doped SrTiO3 with engineered {100}/{110} facets (STO:RS(NaCl)) was synthesized via flux-assisted crystallization. Facet-dependent spatial charge separation, driven by work function differences, enabled electrons and holes to migrate to the respective facets. This configuration tripled photocatalytic hydrogen evolution versus non-faceted STO:RS(w/o), overcoming the limitations of ultraviolet-only absorption and inefficient charge separation.
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