Ruthenium containing molecular electrocatalyst on glassy carbon for electrochemical water splitting

Abstract

Electrochemical water splitting constitutes one of the most promising strategies for converting water into hydrogen-based fuels, and this technology is predicted to play a key role in the transition towards...

Electrocatalytic water oxidation by heteroleptic ruthenium complexes of 2,6-bis(benzimidazolyl)pyridine Scaffold: a mechanistic investigation

“…Electrocatalytic water oxidation of the complexes was performed by CV where three quasi-reversible waves between 0.20 to 1.51 V were observed in CH 3 CN : CF 3 SO 3 H 1 : 9 (v : v) at pH 1. 14 Ag/AgCl (saturated KCl) was used as the reference electrode, along with Pt disk working electrode and Pt wire counter electrode. In anodic sweep, we observed the shifting of the Ru V /Ru IV couple toward positive potential with a huge increase in the peak current for complex 1 (Fig.…”

Green carbon–carbon homocoupling of terminal alkynes by a silica supported Cu(ii)-hydrazone coordination compound

“…The strong peaks at 399.00 and 400.61 eV are related to N–C and NC bonds, respectively, and the peaks at 397.97, 399.83, 402.32 and 403.78 eV are due to the N–O, N–Cu, N–H and N–N bonds, respectively. 36 There are four peaks in the XPS spectrum of Si 2p (Fig. 7e).…”

Cobalt Electrocatalyst on Fluorine Doped Carbon Cloth – a Robust and Partially Regenerable Anode for Water Oxidation

“…[5][6][7] Both homogeneous and heterogeneous electrochemical systems have been investigated in this context. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] Among them, to date, ruthenium-based electrocatalysts have shown the best turnover numbers (TONs) and turnover frequencies (TOFs) for water splitting. [17,18,22] Their high price and environmental impact represent critical disadvantages that could come to limit their applicability.…”

“…Encouragingly, exciting progress has been made in recent years regarding the immobilization or anchoring of molecular WO catalysts onto conductive supports. [16][17][18][19][20][21]24] This strategy takes advantage of both the mechanistic understanding obtained from molecular systems, and the improved stability typically observed for catalysts immobilized on a conductive surface.…”

“…Here, the oxidation of water constitutes the major bottleneck of this overall process but we have witnessed exciting development in the area of water oxidation, both in terms of energy efficiency and sustainability over the past decades [5–7] . Both homogeneous and heterogeneous electrochemical systems have been investigated in this context [8–22] . Among them, to date, ruthenium‐based electrocatalysts have shown the best turnover numbers (TONs) and turnover frequencies (TOFs) for water splitting [17,18,22] .…”