Immobilization of molecular complexes on graphitized carbon cloth as stable and hybrid electrocatalysts for enhanced hydrogen evolution reaction and oxygen evolution reaction

Abstract

The search for an environment friendly, sustainable and cost-effective catalyst used in electrochemical water splitting via hydrogen evolution reaction (HER) has generated considerable interest in renewable energy research worldwide. In...

The isomer-sensitive electrochemical HER of ruthenium(ii)–hydrido complexes involving redox-active azoheteroaromatics

“…27,32 A fairly large K c1 value (involving R1/R2 in Fig. 5 and Table 3) of 10 [16][17][18][19] implied appreciable stability of the intermediate Ru II -L •− electronic form in 1-2. Involvement of the ligand (L → L •− , azo) based frontier orbital in the first electron uptake process (R1) of [1]ClO 4 - [2]ClO 4 was corroborated by the radical EPR of the one-electron reduced 1-2 (Fig.…”

“…15 Furthermore, electrochemical stability, conductivity, and favourable mass-transport properties can be achieved when a carbon support is used in electrocatalytic applications. 16 Against the aforestated background, the present article evaluates the application potency of the newly designed and structurally/spectroscopically/electrochemically well-characterised Ru-H derived isomeric pairs [1a] Furthermore, the electrochemical HER of the complexes has been conducted on a carbon cloth support as immobilisation of molecular complexes onto a solid support is known to enhance their stability and electrocatalytic activity. 18…”

“…15 Furthermore, electrochemical stability, conductivity, and favourable mass-transport properties can be achieved when a carbon support is used in electrocatalytic applications. 16…”

Pushing the Operational Barriers for g-C3N4: A Comprehensive Review of Cutting-Edge Immobilization Strategies

“…These molds or supports are carbon-based, and once the mixture is poured, it is left to deposit onto the surface [96]. The use of this support type is driven by the non-covalent hybridization interaction between the material surface (catalyst or photocatalyst) in the support, which is a relatively weak bond, and the integration of carbon supports aims to overcome this limitation and boost H 2 evolution reaction activity [97]. In Figure 9, a brief schematic of the simplest and most used casting method is shown, using a polymeric solution as a base, wherein the g-C 3 N 4 is dispersed.…”

Design and Development of Sustainable Cu2 (II)- and Mn2 (III)-Embedded Bifunctional Electrocatalysts: Enhanced Hydrogen and Oxygen Generation

“…Considering the increasing future energy requirements and the ensuing environmental repercussions, there is a crucial need to address the substantial carbon imbalance in the usage of fossil fuels. As a result, there is a worldwide expectation of shifting toward cleaner and sustainable energy sources to supplant carbonaceous fuels. − From this perspective, hydrogen may be regarded as the most potentially sustainable energy fuel as it emits no carbon dioxide during its combustion and is widely employed as a future energy source. , Over the last three decades, a possible method for creating effective, carbon-free, sustainable energy and its storage has been the electrocatalytic water-splitting reaction to generate molecular hydrogen and oxygen. − Green energy can be produced cleanly and continually through the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), and these reactions occur at the anode and cathode of the alkaline electrolyzer employed for water splitting, respectively. OER and HER both take place concurrently .…”