Electrocatalysis: From Catalytic Reactions to Energy Storage and Sensing Applications

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Electrocatalysis".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 9793

Special Issue Editors


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Guest Editor
Department of Chemistry, Xi’an Jiaotong-Liverpool University, No. 111 Ren Ai Road, Suzhou Industrial Park, Suzhou 215123, China
Interests: biosensors; chemical sensors; gas sensors; microfluidic-based sensors
Special Issues, Collections and Topics in MDPI journals
The Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Interests: nanosynthesis; bio-mediated synthesis; mesoporous materials; electrocatalysis; photocatalysis; energy storage

Special Issue Information

Dear Colleagues,

The significant climate changes caused by the consumption of fossil fuels have brought a great deal of attention to the community globally in recent years. One effective strategy is to develop clean and sustainable energy solutions to replace fossil fuels. Many countries are now shifting their energy structures from regular fossil fuel to the sustainable and green energy sources in the next decade. Additionally, more and more alternative energy generation has been spotted in both academia research studies and commercial markets. Among the strategies for sustainable energy, electrocatalysis processes has taken a vital role in securing the route of green energy in production and field applications. Energy storage devices, such as supercapacitors, batteries, and fuel cells, are also in a huge demand in energy storage and conversion. Therefore, more efforts are needed for further achievements in sustainable energy and energy storage devices. Overall, electrocatalysis has recently been highlighted in the development of renewable energy and biomolecules/chemical sensing applications considering the internal catalytic advantages of the surface reactions. This Special Issue is expected to further expand and facilitate the exposure of current studies in the related area, and to cover recent progress in electrocatalysis, biomedical/chemical sensors, and energy storage devices, including advanced materials and innovative technologies. Authors are encouraged to submit original research articles and review papers. The subtopics will include but not be limited to:

  1. Electrocatalysis: hydrogen evolution, oxygen evolution, oxygen reduction, CO2 reduction, N2 reduction, etc.;
  2. Energy storage devices: supercapacitors, metal ion batteries, metal air batteries, fuel cells, etc.;
  3. Biomedical/chemical sensors: glucose sensors, hydrogen peroxide, and pH sensors, etc.

Potential authors are encouraged to consult with the Guest Editor before preparing their manuscript to make sure the research topics are in line with the proposed Special Issue.

Dr. Qiuchen Dong
Dr. Lei Jin
Guest Editors

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Keywords

  • electrocatalysis
  • hydrogen evolution
  • oxygen evolution/reduction
  • CO2 reduction
  • N2 reduction
  • biomolecules sensing
  • chemical sensing
  • gas sensing
  • sustainable energy
  • energy storage

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Published Papers (2 papers)

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Research

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13 pages, 3489 KiB  
Article
Covalent Immobilisation of a Nanoporous Platinum Film onto a Gold Screen-Printed Electrode for Highly Stable and Selective Non-Enzymatic Glucose Sensing
by Wesley McCormick, Pádraig McDonagh, John Doran and Denis McCrudden
Catalysts 2021, 11(10), 1161; https://doi.org/10.3390/catal11101161 - 26 Sep 2021
Cited by 17 | Viewed by 3491
Abstract
Progress in the development of commercially available non-enzymatic glucose sensors continues to be problematic due to issues regarding selectivity, reproducibility and stability. Overcoming these issues is a research challenge of significant importance. This study reports a novel fabrication process using a double-layer self-assembly [...] Read more.
Progress in the development of commercially available non-enzymatic glucose sensors continues to be problematic due to issues regarding selectivity, reproducibility and stability. Overcoming these issues is a research challenge of significant importance. This study reports a novel fabrication process using a double-layer self-assembly of (3 mercaptopropyl)trimethoxysilane (MPTS) on a gold substrate and co-deposition of a platinum–copper alloy. The subsequent electrochemical dealloying of the less noble copper resulted in a nanoporous platinum structure on the uppermost exposed thiol groups. Amperometric responses at 0.4 V vs. Ag/AgCl found the modification to be highly selective towards glucose in the presence of known interferants. The sensor propagated a rapid response time <5 s and exhibited a wide linear range from 1 mM to 18 mM. Additionally, extremely robust stability was attributed to enhanced attachment due to the strong chemisorption between the gold substrate and the exposed thiol of MPTS. Incorporation of metallic nanomaterials using the self-assembly approach was demonstrated to provide a more reproducible and controlled molecular architecture for sensor fabrication. The successful application of the sensor in real blood serum samples displayed a strong correlation with clinically obtained glucose levels. Full article
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Review

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34 pages, 77282 KiB  
Review
Iridium Oxide Enabled Sensors Applications
by Qiuchen Dong, Xiangcheng Sun and Songbing He
Catalysts 2021, 11(10), 1164; https://doi.org/10.3390/catal11101164 - 27 Sep 2021
Cited by 8 | Viewed by 4262
Abstract
There have been numerous studies applying iridium oxides in different applications to explore their proton-change-based reactions since the 1980s. Iridium oxide can be fabricated directly by applying electrodeposition, sputter-coating method, or oxidation of iridium wire. Generally, there have been currently two approaches in [...] Read more.
There have been numerous studies applying iridium oxides in different applications to explore their proton-change-based reactions since the 1980s. Iridium oxide can be fabricated directly by applying electrodeposition, sputter-coating method, or oxidation of iridium wire. Generally, there have been currently two approaches in applying iridium oxide to enable its sensing applications. One was to improve or create different electrolytes with (non-)electrodeposition method for better performance of Nernst Constant with the temperature-related system. The mechanism behind the scenes were summarized herein. The other was to change the structure of iridium oxide through different kinds of templates such as photolithography patterns, or template-assisted direct growth methods, etc. to improve the sensing performance. The detection targets varied widely from intracellular cell pH, glucose in an artificial sample or actual urine sample, and the hydrogen peroxide, glutamate or organophosphate pesticides, metal-ions, etc. This review paper has focused on the mechanism of electrodeposition of iridium oxide in aqueous conditions and the sensing applications towards different biomolecules compounds. Finally, we summarize future trends on Iridium oxide based sensing and predict future work that could be further explored. Full article
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