Advanced Photo- and Electrocatalytic Surface Applications

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Engineering for Energy Harvesting, Conversion, and Storage".

Deadline for manuscript submissions: 10 June 2024 | Viewed by 4245

Special Issue Editor


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Guest Editor
CFUM-UP, Centro de Física, Universidades Do Minho e Do Porto, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal
Interests: thin films with catalytic; antimicrobial and anti-adherent properties

Special Issue Information

Dear Colleagues,

Energy transition and green processes are included in the 2030 Sustainable Development Goals of the United Nations. Applications include wastewater treatment, CO2 reduction, H2 production, and chemical synthesis. Catalytic systems, in particular, photo- and electrocatalytic processes, are capitally important in the present economic and energetic context.

One of the biggest challenges of scaling-up catalytic processes is related to the use of catalysts in slurry. Immobilizing the catalyst can solve these problems, making it possible to reuse and avoid centrifugation/filtration steps after the reaction. However, immobilization strategies may fail in the reusability aspect if the catalytic particles detach from the support surface. It is, therefore, of the utmost importance to investigate immobilization techniques that are able to produce stable and adhered films with good catalytic activity.

We are pleased to invite you to publish in this Special Issue on photo- and electrocatalytic applications using catalysts in the form of coatings. This thematic is aligned with the journal scope, which includes publishing research on coatings and surface engineering.

This Special Issue aims to cover the photo- and electrocatalytic applications of coatings produced using diverse techniques. This includes physical/chemical vapor deposition, chemical functionalization, thermal and ultrasonic methods.

In this Special Issue, original research articles and reviews are welcome. Research areas may include, but are not limited to, the following: photocatalysis, electrocatalysis, thin films, chemical vapor deposition, physical vapor deposition, and chemical functionalization processes.

We look forward to receiving your contributions.

Dr. Maria José Lima
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. Coatings 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 2600 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

  • photocatalysis
  • electrocatalysis
  • catalysis
  • coatings
  • thin films
  • chemical vapor deposition
  • physical vapor deposition
  • chemical functionalization

Published Papers (3 papers)

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Research

9 pages, 7476 KiB  
Communication
Thermoelectric Methylene Blue Degradation by SnSe-Doped Low-Content Copper
by Kaili Wang, Li Fan, Hongliang Zhu, Hao Liu, Yuxuan Wang and Shancheng Yan
Coatings 2024, 14(4), 431; https://doi.org/10.3390/coatings14040431 - 3 Apr 2024
Viewed by 557
Abstract
In important applications, thermoelectric technology has been widely applied for precise temperature control in intelligent electronics. This work synthesized and characterized low-content copper-doped SnSe thermoelectric catalysts using an easy and effective hydrothermal method. It was discovered that doping increased the crystal plane spacing [...] Read more.
In important applications, thermoelectric technology has been widely applied for precise temperature control in intelligent electronics. This work synthesized and characterized low-content copper-doped SnSe thermoelectric catalysts using an easy and effective hydrothermal method. It was discovered that doping increased the crystal plane spacing of SnSe, increased the carrier concentration, and improved the thermoelectric properties. The best degradation was attained at x = 0.0025. The thermoelectric degradation performance of low-dose copper-doped tin selenide Sn1−xCuxSe (x = 0, 0.0005, 0.001, 0.0015, 0.002, 0.0025, 0.003), for the degradation of methylene blue from organic wastewater at 75 °C, was examined. Our research indicates that by using this approach, we can create more high-performance catalysts. Full article
(This article belongs to the Special Issue Advanced Photo- and Electrocatalytic Surface Applications)
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12 pages, 5843 KiB  
Article
A Cost-Effective, Nanoporous, High-Entropy Oxide Electrode for Electrocatalytic Water Splitting
by Bu-Jine Liu, Tai-Hsin Yin, Yu-Wei Lin, Chun-Wei Chang, Hsin-Chieh Yu, Yongtaek Lim, Hyesung Lee, Changsik Choi, Ming-Kang Tsai and YongMan Choi
Coatings 2023, 13(8), 1461; https://doi.org/10.3390/coatings13081461 - 19 Aug 2023
Cited by 5 | Viewed by 1949
Abstract
High-entropy materials have attracted extensive attention as emerging electrode materials in various energy applications due to their flexible tunability, unusual outstanding activities, and cost-effectiveness using multiple earth-abundant elements. We introduce a novel high-entropy composite oxide with the five elements of Cu, Ni, Co, [...] Read more.
High-entropy materials have attracted extensive attention as emerging electrode materials in various energy applications due to their flexible tunability, unusual outstanding activities, and cost-effectiveness using multiple earth-abundant elements. We introduce a novel high-entropy composite oxide with the five elements of Cu, Ni, Co, Fe, and Cr (HEO-3CNF) for use in the oxygen evolution reaction (OER) in electrocatalytic water splitting. HEO-3CNF is composed of two phases with a non-equimolar, deficient high-entropy spinel oxide of (Cu0.2−xNi0.2Co0.2Fe0.2Cr0.2)3O4 and monoclinic copper oxide (CuO). Electrochemical impedance spectroscopy (EIS) with distribution of relaxation times (DRT) analysis validates that the HEO-3CNF-based electrode exhibits faster charge transfer than benchmark CuO. It results in improved OER performance with a lower overpotential at 10 mA/cm2 and a Tafel slope than CuO (518.1 mV and 119.7 mV/dec versus 615.9 mV and 131.7 mV/dec, respectively) in alkaline conditions. This work may provide a general strategy for preparing novel, cost-effective, high-entropy electrodes for water splitting. Full article
(This article belongs to the Special Issue Advanced Photo- and Electrocatalytic Surface Applications)
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10 pages, 3193 KiB  
Article
Thin Layers of SrTiO3-TiO2 with Eutectic Composition for Photoelectrochemical Water Splitting
by Jaroslaw Sar, Katarzyna Kołodziejak, Krzysztof Orliński, Michal Gajewski, Marian Teodorczyk and Dorota Anna Pawlak
Coatings 2022, 12(12), 1876; https://doi.org/10.3390/coatings12121876 - 2 Dec 2022
Cited by 1 | Viewed by 1219
Abstract
Hydrogen as a potential fuel of the future can be produced in a photoelectrochemial water splitting process. Herein, we demonstrate the fabrication of photoelectrochemical electrodes based on SrTiO3-TiO2 with a eutectic composition on titanium and conductive glass FTO (fluorine doped [...] Read more.
Hydrogen as a potential fuel of the future can be produced in a photoelectrochemial water splitting process. Herein, we demonstrate the fabrication of photoelectrochemical electrodes based on SrTiO3-TiO2 with a eutectic composition on titanium and conductive glass FTO (fluorine doped tin oxide) substrates by magnetron sputtering. The XRD and SEM/EDS reveal the amorphous nature and homogeneity of the sputtered material. The influence of the layer thickness on the photoactivity was investigated. There were three-layer thicknesses (50, 350, and 750 nm) selected by sputtering for 12, 80 and 220 min for the preparation of photoelectrodes. The photoelectrochemical analysis confirms the photoactivity of the obtained layers under illumination with a xenon lamp (600 mW/cm2). The highest photocurrent density of 11.8 × 10−3 mAcm−2 at 1.2 V vs. SCE was recorded for a layer thickness of 50 nm on titanium as better matching between the Ti work function and the conduction band. Full article
(This article belongs to the Special Issue Advanced Photo- and Electrocatalytic Surface Applications)
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