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Catalysts
Special Issues
Nanostructured Materials for Photo and Electro-Catalysis
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Nanostructured Materials for Photo and Electro-Catalysis

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

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 2121

Special Issue Editor

Dr. Ziyauddin Khan

E-Mail Website
Guest Editor
Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174 Norrköping, Sweden
Interests: batteries; supercapacitors; organic batteries; polymer electrolyte
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Applications of nanomaterials are found in the majority of modern devices, ranging from household appliances to electronic gadgets. Nanostructured materials have attracted an enormous amount of attention, as they demonstrate behavior which is completely different to that of bulk materials. Nanostructured materials with different sizes, shapes and morphologies are used in various catalytic processes, such as photo and electrocatalysis for H2 generation, oxygen reduction reaction, oxygen evolution reaction, CO2 reduction, dye degradation and H2O2 production. This Special Issue invites submission for original research articles, as well as reviewing and progressing reports on nanostructured materials and their applications in photo and electrocatalysis. Submissions are welcome in the following areas related (but not limited) to nanostructured materials for H2 generation, oxygen reduction reaction, oxygen evolution reaction, CO2 reduction, water oxidation, and dye degradation, by photocatalytic and/or electrocatalytic processes. Additionally, this issue invites submissions for nanostructured electrocatalysts used in metal-air batteries. 

Dr. Ziyauddin Khan
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Photocatalysts
  • Electrocatalysts
  • H2 generation
  • CO2 reduction
  • Metal-air batteries
  • Dye degradation
  • ORR
  • OER

Published Papers (1 paper)

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Research

13 pages, 2465 KiB  
Article
Amperometric Oxygen Sensor Based on Bimetallic Pd-Cu/C Electrocatalysts
by Yuan-Gee Lee, Ya-Tian Hou and Yu-Ching Weng
Catalysts 2021, 11(10), 1189; https://0-doi-org.brum.beds.ac.uk/10.3390/catal11101189 - 29 Sep 2021
Cited by 2 | Viewed by 1516
Abstract
A laminated Pd-Cu alloy/C/Nafion multilayer was prepared to sense O2 atmosphere in a metal-air structure. As a matrix, palladium was doped with various amounts of copper to conduct a preliminary test with optimum response, and four compositions, Pd, Pd8Cu2, Pd6Cu4, and Pd5Cu5, [...] Read more.
A laminated Pd-Cu alloy/C/Nafion multilayer was prepared to sense O2 atmosphere in a metal-air structure. As a matrix, palladium was doped with various amounts of copper to conduct a preliminary test with optimum response, and four compositions, Pd, Pd8Cu2, Pd6Cu4, and Pd5Cu5, were selected as the candidate electrodes. It was found that the Pd6Cu4/C electrode showed higher sensitivity for all the electrodes. According to the phase identification of X-ray diffraction and X-ray photoelectron spectroscopy tests, the high sensitivity was attributed to the doped Cu, which was merged into the Pd matrix to repel the Pd out of the matrix as a Pd-skin layer on the surface. In the Pd-Cu alloy, the Cu site served as a template reaction site to break the O-O bond and reduce the interaction force of adsorbated oxygen on the Pd site. During the oxygen reduction reaction, not only did the decomposition of O2 molecules occur on the electrode, but the electrode itself proceeded with a phase transformation to high valance of oxide, PdO3. The sensing potential for O2 sensing was determined by polarization curves in which the flat region resulting from a diffusion-control was adopted. Chronoamperometric measurements were employed to construct calibration curves for the selected electrodes. A successive response was measured to test the endurance, which showed appreciable sensitivity decay. We also tested the selectivity by introducing a series of disturbance gases, CO, SO2, and NO2, in which the Pd6Cu4 electrode prevailed over the other electrodes. Full article
(This article belongs to the Special Issue Nanostructured Materials for Photo and Electro-Catalysis)
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