Engineering edge sites based on NiS 2 /MoS 2 /CNTs heterojunction catalyst for overall water splitting
Applied Surface Science, ISSN: 0169-4332, Vol: 615, Page: 156309
2023
- 23Citations
- 13Captures
- 1Mentions
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Most Recent News
Researchers from Dalian University of Technology Describe Findings in Engineering (Engineering Edge Sites Based On Nis2/mos2/cnts Heterojunction Catalyst for Overall Water Splitting)
2023 MAR 31 (NewsRx) -- By a News Reporter-Staff News Editor at Nanotech Daily -- Current study results on Engineering have been published. According to
Article Description
Boosting the hydrogen and oxygen evolution reaction (HER/OER) on MoS 2 -based catalysts is a challenging scientific issue due to the activity of MoS 2 is significantly rely on the edge site which is limited in regular structure. Herein, a highly dispersed edge site-rich NiS 2 /MoS 2 /CNTs heterojunction catalyst is successfully developed via facile etching the nanoflower-like NiS 2 /MoS 2 spheres on carbon nanotubes (CNTs). Through expanding the lattice spacing of 2H-MoS 2, generating abundant Mo-S edge sites ( i.e. generating a large number of unsaturated S atoms) together with enhancing the dispersity of NiS 2 /MoS 2 nanosheets, the etching posttreatment significantly regulates the electronic and geometric structure of NiS 2 /MoS 2 /CNTs. Further combining the extremely intimate electronic interaction between MoS 2 /NiS 2 heterogeneous interfaces, the optimal NiS 2 /MoS 2 /CNTs presents a preeminent alkali water splitting performance with overpotentials of 149 for HER and 315 mV for OER at 10 mA cm −2, which are 29 and 35 mV lower than the catalyst before etch treatment (NiS 2 /MoS 2 /CNTs-p), respectively. Moreover, the electrolyzer assembled with NiS 2 /MoS 2 /CNTs drives a voltage of 1.73 V at 10 mA cm −2 and a continuous stable operation of 50 h toward overall water splitting.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0169433222038375; http://dx.doi.org/10.1016/j.apsusc.2022.156309; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85145965367&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0169433222038375; https://dx.doi.org/10.1016/j.apsusc.2022.156309
Elsevier BV
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