Protruding Pt single-sites on hexagonal ZnIn2S4 to accelerate photocatalytic hydrogen evolution

Abstract Single-site cocatalysts engineered on supports offer a cost-efficient pathway to utilize precious metals, yet improving the performance further with minimal catalyst loading is still highly desirable. Here we have conducted a photochemical reaction to stabilize ultralow Pt co-catalysts (0.26 wt%) onto the basal plane of hexagonal ZnIn 2 S 4 nanosheets (Pt SS -ZIS) to form a Pt-S 3 protrusion tetrahedron coordination structure. Compared with the traditional defect-trapped Pt single-site counterparts, the protruding Pt single-sites on h -ZIS photocatalyst enhance the H 2 evolution yield rate by a factor of 2.2, which could reach 17.5 mmol g −1 h −1 under visible light irradiation. Importantly, through…

• NN
  National Natural Science Foundation of China

  Awards: 21902143, 51702287, 2020B1515020038, 2019QN01L148
• GO
  Government of Jiangsu Province
• NS
  Natural Science Foundation of Jiangsu Province

  Award: BK20190640
• GP
  Guangdong Provincial Pearl River Talents Program

  Awards: 2020B1515020038, 2019QN01L148
• BA
  Basic and Applied Basic Research Foundation of Guangdong Province

  Award: 2020B1515020038
• NS
  Natural Science Foundation of Zhejiang Province

  Award: LY21B030005