Transition metal (Ni, Cu and Fe) doped MnS nanostructures: effect of doping on supercapacitance and water splitting

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dc.contributor.authorRevaprasadu, Neerish
dc.contributor.authorTigwere, Gervais A.
dc.contributor.authorKhan, Malik Dilshad
dc.contributor.authorNyamen, Linda D.
dc.contributor.authorDe Souza, Felipe M.
dc.contributor.authorLin, Wang
dc.contributor.authorGupta, Ram K.
dc.contributor.authorNdifon, Peter T.
dc.coverage.conferenceissn
dc.date.accessioned2026-03-18T08:16:42Z
dc.date.available2026-03-18T08:16:42Z
dc.date.issued2023
dc.departmentNameChemistry
dc.description.abstractIncreasing demand for sustainable energy has boosted the exploration of inexpensive and efficient catalysts. Transition metal sulfides have been proven as efficient electrocatalysts for energy storage or energy generation applications. Herein, cubic phase α-MnS and transition metal (Cu2+, Fe3+, and Ni2+) doped MnS nanoparticles were synthesized via the hot injection method from their piperazinyl dithiocarbamate complexes, respectively. The morphology of pristine and TM-doped MnS nanoparticles was studied using transmission electron microscopy (TEM) and scanning electron microscopy (SEM) analysis, while optical and structural properties were studied using UV–visible spectroscopy and powder X-ray diffraction (p-XRD), respectively. p-XRD analysis confirmed the successful incorporation of dopants into MnS lattice structure and suitability of heterocyclic dithiocarbamate complexes for phase/composition controlled synthesis of nanomaterials. The effect of doping on electrocatalytic properties was also investigated. The MnS-based electrodes doped with Ni and Fe presented satisfactory specific capacitances of 840 and 900 F/g at 2 mV/s scan rate. In addition, the testing for electrocatalysis for the water-splitting process demonstrated that Ni–MnS had a superior performance for HER with a η of 132 mV at 10 mA/cm2 and Tafel slope of 44 mV/dec. On the other hand, Fe–MnS showed better performance towards OER with a η of 280 mV at 10 mA/cm2 and a Tafel slope of 60 mV/dec.
dc.facultyFaculty of Science, Agriculture and Engineering
dc.identifier.citationTigwere, G.A., Khan, M.D., Nyamen, L.D., De Souza, F.M., Lin, W., Gupta, R.K., Revaprasadu, N. and Ndifon, P.T. 2023. Transition metal (Ni, Cu and Fe) doped MnS nanostructures: effect of doping on supercapacitance and water splitting. Materials Science in Semiconductor Processing, 158, pp.1-13.
dc.identifier.issn1873-4081 (online)
dc.identifier.issn369-8001 (print)
dc.identifier.otherhttps://doi.org/10.1016/j.mssp.2023.107365
dc.identifier.urihttp://hdl.handle.net/10530/58984
dc.inproceedingsissn
dc.issuenumber158
dc.keynoteissn
dc.language.isoEnglish
dc.pages1 - 13
dc.peerreviewedYes
dc.publisherElsevier
dc.subjectDithiocarbamate
dc.subjectHydrogen evolution
dc.subjectMnS
dc.subjectSupercapacitance
dc.subjectWater splitting
dc.titleTransition metal (Ni, Cu and Fe) doped MnS nanostructures: effect of doping on supercapacitance and water splitting
dc.title.journalMaterials Science in Semiconductor Processing
dc.typeJournal Article
dspace.entity.typePublication
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