TY - JOUR
T1 - Ni(ii) dithiolate anion composites with two-dimensional materials for electrochemical oxygen evolution reactions (OERs)
AU - Singh, Ayushi
AU - Singh, Amita
AU - Kociok-Köhn, Gabriele
AU - Molloy, Kieran C.
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. AK is grateful to the Council of Scientific and Industrial Research, New Delhi, India for financial assistance in the form of project no. 01(2899)/17/EMR-II.
PY - 2021/9/21
Y1 - 2021/9/21
N2 - In this report, the composites of anionic complex [NEt4][Ni(S2C2Ph2)2] with two-dimensional materials such as graphene oxide (GO), reduced graphene oxide (rGO) or graphitic carbon nitride (g-C3N4) have been prepared by a simple sonochemical technique and utilized for the oxygen evolution half-cell reaction of water splitting. The synthesized complex anion has been characterized spectroscopically and by single-crystal X-ray diffraction, while its composites with GO, rGO and g-C3N4have been characterized using physicochemical characterization techniques,viz.powder X-ray diffraction and scanning electron microscopy. Electrochemical measurements were performed on a three-electrode system having a platinum wire counter electrode, a Ag/AgCl reference electrode and a catalytically modified glassy carbon electrode using linear sweep voltammetry, cyclic voltammetry and electrochemical impedance spectroscopy. The electrochemical studies suggest that the [Ni(S2C2Ph2)2]-rGO modified electrode had notable electrocatalytic activity for the oxygen evolution reaction (OER). The fabricated electrode exhibited acceptable repeatability, reproducibility and stability. To the best of our knowledge, there are only a few reports on detailed studies of composites of 2D materials with a nickel-based molecular complex, exhibiting substantial synergistic activity towards electrochemical water splitting.
AB - In this report, the composites of anionic complex [NEt4][Ni(S2C2Ph2)2] with two-dimensional materials such as graphene oxide (GO), reduced graphene oxide (rGO) or graphitic carbon nitride (g-C3N4) have been prepared by a simple sonochemical technique and utilized for the oxygen evolution half-cell reaction of water splitting. The synthesized complex anion has been characterized spectroscopically and by single-crystal X-ray diffraction, while its composites with GO, rGO and g-C3N4have been characterized using physicochemical characterization techniques,viz.powder X-ray diffraction and scanning electron microscopy. Electrochemical measurements were performed on a three-electrode system having a platinum wire counter electrode, a Ag/AgCl reference electrode and a catalytically modified glassy carbon electrode using linear sweep voltammetry, cyclic voltammetry and electrochemical impedance spectroscopy. The electrochemical studies suggest that the [Ni(S2C2Ph2)2]-rGO modified electrode had notable electrocatalytic activity for the oxygen evolution reaction (OER). The fabricated electrode exhibited acceptable repeatability, reproducibility and stability. To the best of our knowledge, there are only a few reports on detailed studies of composites of 2D materials with a nickel-based molecular complex, exhibiting substantial synergistic activity towards electrochemical water splitting.
UR - http://www.scopus.com/inward/record.url?scp=85115084221&partnerID=8YFLogxK
U2 - 10.1039/d1nj02644e
DO - 10.1039/d1nj02644e
M3 - Article
AN - SCOPUS:85115084221
VL - 45
SP - 16264
EP - 16270
JO - New Journal of Chemistry
JF - New Journal of Chemistry
SN - 1144-0546
IS - 35
ER -