Thiosulfate species promoting hydrogen evolution reaction at the heterointerface of Ir clusters-loaded WS2 nanosheets

Sho Kitano; Reiko Tagusari; Takeharu Sugiyama; Yuta Nagasaka; Naoto Wakabayashi; Rioto Wada; Tomoya Nagao; Mana Iwai; Koji Fushimi; Yoshitaka Aoki; Hiroki Habazaki

doi:10.1039/D4CC06122E

Thiosulfate species promoting hydrogen evolution reaction at the heterointerface of Ir clusters-loaded WS₂ nanosheets†

Sho Kitano,

*^a Reiko Tagusari,^b Takeharu Sugiyama,^c Yuta Nagasaka,^b Naoto Wakabayashi,^b Rioto Wada,^b Tomoya Nagao,^b Mana Iwai,^a Koji Fushimi,^a Yoshitaka Aoki

^a and Hiroki Habazaki

*^a

Author affiliations

* Corresponding authors

^a Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan

^b Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan

^c Research Center for Synchrotron Light Applications, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan

Abstract

We synthesize Ir cluster-loaded monolayer WS₂ nanosheets for water electrolysis and fabricate unique functional heterointerfaces with thiosulfate species formed from sulfide ions of WS₂. In situ XAFS measurements reveal that water dissociation is promoted between positively charged thiosulfates and negatively charged Ir clusters at the interfacial active sites for hydrogen evolution reaction.

Chemical Communications

Thiosulfate species promoting hydrogen evolution reaction at the heterointerface of Ir clusters-loaded WS₂ nanosheets†

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Thiosulfate species promoting hydrogen evolution reaction at the heterointerface of Ir clusters-loaded WS₂ nanosheets

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Chemical Communications