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Unraveling compensation between electron transfer and strain in Ni-Ag-MoS₂ photocatalyst
- Publication Year :
- 2022
- Publisher :
- Elsevier, 2022.
-
Abstract
- Despite the boom in catalytic response via constructing interfaces, understanding interfaces’ interaction in heterostructures is still a paradox. In this work, the interaction of Ni with MoS₂ in Ni-Ag-MoS₂ heterostructure are unveiled through synchrotron X-PEEM and what’s more, the missing interaction mechanism at the Ag-MoS₂ interface is probed via Raman mapping. The observed competition between the downshift of the E2g¹ and A1g modes due to charge carrier injection and the upshift of the E2g¹ and A1g modes due to compressive strain during reverse laser power experiment is assigned to the non-uniform growth of Ag nanoparticles, their intimate contact with MoS₂, and Ag intercalated layered MoS₂. The substantial improvement of the H₂ yield of the Ni-Ag-MoS₂ (∼55 μmol h−1 g−1) over the pristine MoS₂ and the binary Ag-MoS₂ evidence successful bonding of Ni, Ag and MoS₂. This study highlights the importance of considering both electronic coupling and strain to optically tune electromechanical properties of MoS₂.
- Subjects :
- Raman mapping
Ni-Ag-MoS2
Photocatalyst
X-PEEM
Interfacial interaction
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.od......2423..f691a56075182961be1952ca5bba6c0f