The Rational Design of Advanced Electrocatalysts for Oxygen Evolution and Hydrogen Evolution Reactions

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Chemical Processes and Systems".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 1446

Special Issue Editors

School of Material Science and Chemical Engineering, Institute of Mass Spectrometry, Ningbo University, Fenghua Road 818, Ningbo 315211, China
Interests: DFT; design of catalysts; single atom catalysts; structure–activity relationship
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Guest Editor
School of Environmental and Civil Engineering, Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
Interests: environmental electrochemistry; water treatment; DFT; advanced oxidation/reduction process
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Guest Editor
School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
Interests: First-principles calculation; electrocatalysis; reaction mechanism.
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Special Issue Information

Dear Colleagues,

Hydrogen is expected to be a promising substitute fuel to traditional fossil fuels due to its renewability and high energy density. Electrochemical water splitting is deemed an economical and efficient way to generate hydrogen for the utilization of renewable energies. To accelerate the sluggish oxygen evolution and hydrogen evolution reactions (OER and HER), electrocatalysts are commonly used to reduce their kinetic energy barriers and, finally, improve energy conversion efficiency. Although great efforts have been devoted to developing efficient water splitting electrocatalysts, further investigations into the design and optimization of electrocatalysts are urgently needed. This Special Issue will focus on the rational design of advanced electrocatalysts for oxygen evolution and hydrogen evolution reactions.

Dr. Yanan Zhou
Dr. Guoshuai Liu
Dr. Xiaoping Gao
Guest Editors

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Keywords

  • rational design of electrocatalysts
  • oxygen evolution reaction
  • hydrogen evolution reaction
  • structure–activity relationship
  • DFT

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Published Papers (1 paper)

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Research

16 pages, 4326 KiB  
Article
Enhanced Photo-Electrochemical Responses through Photo-Responsive Ruthenium Complexes on ITO Nanoparticle Surface
by Uji Pratomo, Salmahaminati, Minori Abe, Masahiko Hada, Santhy Wyantuti, Husein H. Bahti and Jacob Yan Mulyana
Processes 2023, 11(7), 2060; https://doi.org/10.3390/pr11072060 - 10 Jul 2023
Viewed by 1137
Abstract
The mononuclear ruthenium 1-Cl and dinuclear ruthenium 2-Cl complexes undergo a photo-induced ligand exchange in water, affording the corresponding 1-H2O and 2-H2O complexes. The use of indium tin oxide nanoparticles (nanoITOs) to explore the photo-electrochemistry of the [...] Read more.
The mononuclear ruthenium 1-Cl and dinuclear ruthenium 2-Cl complexes undergo a photo-induced ligand exchange in water, affording the corresponding 1-H2O and 2-H2O complexes. The use of indium tin oxide nanoparticles (nanoITOs) to explore the photo-electrochemistry of the in situ-generated 1-H2O and 2-H2O in solution revealed greater photocurrents produced by these two complexes when compared with an experiment using a buffer only. Interestingly, the high photocurrent shown by the dinuclear complex 2-H2O was accompanied by the deposition of its higher oxidation state (H2O)RuII–RuIII(OH), as evidenced with cyclic voltammetry, SEM and XPS. The IPCE and spectro-electrochemistry studies supported by TD-DFT calculations revealed the visible light harvesting ability of 1-H2O and 2-H2O in solution and the subsequent electron injection into the conduction band of the nanoITOs, enhanced in 2-H2O via a plausible chelating effect. Full article
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