TY - JOUR
T1 - Phase-controlled solvothermal syntheses and oxygen evolution reaction (OER) activity of nickel sulfide nanoparticles obtained from 1,2-bis(diphenylphosphino)ethane nickel(ii) acetylacetonatedithiolate
AU - Singh, Ayushi
AU - Singh, Amita
AU - Kociok-Köhn, Gabriele
AU - Chauhan, Ratna
AU - Gosavi, Suresh W.
AU - Singh, Anar
AU - Singh, Ashish Kumar
AU - Kumar, Abhinav
AU - Muddassir, Mohd
N1 - Funding Information:
Dr Mohd. Muddassir is grateful to the Researchers Supporting Project Number (RSP-2021/141), King Saud University, Riyadh, Saudi Arabia, for financial assistance. AS is obliged to CSIR, New Delhi for the financial support in the form of a junior research fellowship (file no. 09/107(0412)/2020-EMR-I).
PY - 2022/6/7
Y1 - 2022/6/7
N2 - A new heteroleptic nickel(ii) complex, [Ni(dppe)(acac)]·CHCl3 (1) (where acac = acetylacetonatedithiolate, dppe = 1,2-bis(diphenylphosphino)ethane), has been synthesized and characterized using different spectroscopic techniques and single-crystal X-ray diffraction. The solvothermal decomposition of the complex in two different solvents, viz. 1-dodecanethiol (DT) and octadecyl amine (ODA), yielded two different nickel sulfides, viz.Ni-DT and Ni-ODA, respectively. These sulfides have been characterized by PXRD and SEM. Rietveld refinement analyses of Ni-DT revealed that it comprises two phases of nickel sulfide, viz. NiS and Ni3S3, while Ni-ODA possesses only a single phase of Ni2S3. The newly synthesized materials have been used as electrocatalysts for the oxygen evolution half-cell reaction of water splitting. The electrochemical studies suggest that Ni-DT/Ni-ODA has a good electrocatalytic activity towards the OER at a low overpotential of ∼200 mV with η1 being 342 mV and 243 mV for Ni-DT and Ni-ODA, respectively, at a scan rate of 1 mV s−1
AB - A new heteroleptic nickel(ii) complex, [Ni(dppe)(acac)]·CHCl3 (1) (where acac = acetylacetonatedithiolate, dppe = 1,2-bis(diphenylphosphino)ethane), has been synthesized and characterized using different spectroscopic techniques and single-crystal X-ray diffraction. The solvothermal decomposition of the complex in two different solvents, viz. 1-dodecanethiol (DT) and octadecyl amine (ODA), yielded two different nickel sulfides, viz.Ni-DT and Ni-ODA, respectively. These sulfides have been characterized by PXRD and SEM. Rietveld refinement analyses of Ni-DT revealed that it comprises two phases of nickel sulfide, viz. NiS and Ni3S3, while Ni-ODA possesses only a single phase of Ni2S3. The newly synthesized materials have been used as electrocatalysts for the oxygen evolution half-cell reaction of water splitting. The electrochemical studies suggest that Ni-DT/Ni-ODA has a good electrocatalytic activity towards the OER at a low overpotential of ∼200 mV with η1 being 342 mV and 243 mV for Ni-DT and Ni-ODA, respectively, at a scan rate of 1 mV s−1
UR - http://www.scopus.com/inward/record.url?scp=85132047208&partnerID=8YFLogxK
U2 - 10.1039/d2nj01177h
DO - 10.1039/d2nj01177h
M3 - Article
AN - SCOPUS:85132047208
SN - 1144-0546
VL - 46
SP - 10246
EP - 10255
JO - New Journal of Chemistry
JF - New Journal of Chemistry
IS - 21
ER -
