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Special Issue Editor

Dr. Meysam Tayebi

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Guest Editor

Korea Research Institute of Chemical Technology, Ulsan 44412, Republic of Korea
Interests: photocatalyst; photo electrocatalyst; electrocatalyst; nanomaterials; semiconductors; renewable energy; environmental chemistry

Special Issue Information

Dear Colleagues,

Renewable energy production through the use of photo(electro)catalysts (photocatalysts (PCs), electrocatalysts (ECs) and photo(electro)catalysts (PECs)), presenting with less environmental impacts, could solve the current air pollution and global warming issues associated with conventional energy production via fossil fuel combustion. Photo(electro)catalysts have recently attracted great interest due to their potential for reducing environmental pollutants (e.g., CO₂, NO_x, etc.) and producing sustainable energy resources, such as H₂, O₂ and H₂O₂. Much effort has been devoted to regulating components, phases, crystallinity, facets, morphology and defects for optimizing electronic structures for improved photo(electro)catalytic activity. However, the development of low-cost and efficient photo(electro)catalysts is still a great challenge.

This Special Issue aims to cover the most recent advances in the development of photo(electro)catalysts (PCs, ECs and PECs) for efficient and selective photo(electro)catalysis. This includes, but is not limited to, the design, synthesis and characterization of photocatalyst, photo(electro)catalytic and electrocatalytic nanomaterials.

We are also more than honored to announce that the Topical Advisory Panel Member Dr. Zohreh Masoumi (from University of Ulsan, Korea) will be participating in this Special Issue.

Dr. Meysam Tayebi
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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

catalyst
photocatalyst
photo(electro)catalyst
electrocatalyst
nanomaterials
CO₂ and N₂ reduction
H₂
H₂O₂ production

Published Papers (2 papers)

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Research

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28 pages, 7417 KiB

Open AccessArticle

Enhancing Methylene Blue Removal through Adsorption and Photocatalysis—A Study on the GO/ZnTiO₃/TiO₂ Composite

by Ximena Jaramillo-Fierro and Guisella Cuenca

Int. J. Mol. Sci. 2024, 25(8), 4367; https://doi.org/10.3390/ijms25084367 - 15 Apr 2024

Viewed by 240

Abstract

This study focuses on synthesizing and characterizing a graphene oxide/ZnTiO₃/TiO₂ (GO/ZTO/TO) composite to efficiently remove methylene blue (MB) from water, presenting a novel solution to address industrial dye pollution. GO and ZTO/TO were synthesized by the modified Hummers and sol–gel methods, respectively, while GO/ZTO/TO was prepared using a hydrothermal process. The structural and surface properties of the composite were characterized using various analytical techniques confirming the integration of the constituent materials and suitability for dye adsorption. The study revealed that GO/ZTO/TO exhibits an adsorption capacity of 78 mg g⁻¹ for MB, with only a 15% reduction in adsorption efficiency until the fifth reuse cycle. Furthermore, the study suggests optimal adsorption near neutral pH and enhanced performance at elevated temperatures, indicating an endothermic reaction. The adsorption behavior fits the Langmuir isotherm, implying monolayer adsorption on homogeneous surfaces, and follows pseudo-second-order kinetics, highlighting chemical interactions at the surface as the rate-limiting step. The photocatalytic degradation of MB by GO/ZTO/TO follows pseudo-first-order kinetics, with a higher rate constant than that of GO alone, demonstrating the enhanced photocatalytic activity of the composite. In conclusion, GO/ZTO/TO emerges as a promising and sustainable approach for water purification, through an adsorption process and subsequent photocatalytic degradation. Full article

(This article belongs to the Special Issue Photo(electro)catalysts: Design, Synthesis and Molecular Applications)

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Review

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19 pages, 6969 KiB

Open AccessReview

Electrocatalytic Reactions for Converting CO₂ to Value-Added Products: Recent Progress and Emerging Trends

by Zohreh Masoumi, Meysam Tayebi, Mahdi Tayebi, S. Ahmad Masoumi Lari, Nethmi Sewwandi, Bongkuk Seo, Choong-Sun Lim, Hyeon-Gook Kim and Daeseung Kyung

Int. J. Mol. Sci. 2023, 24(12), 9952; https://doi.org/10.3390/ijms24129952 - 09 Jun 2023

Cited by 5 | Viewed by 2526

Abstract

Carbon dioxide (CO₂) emissions are an important environmental issue that causes greenhouse and climate change effects on the earth. Nowadays, CO₂ has various conversion methods to be a potential carbon resource, such as photocatalytic, electrocatalytic, and photo-electrocatalytic. CO₂ conversion into value-added products has many advantages, including facile control of the reaction rate by adjusting the applied voltage and minimal environmental pollution. The development of efficient electrocatalysts and improving their viability with appropriate reactor designs is essential for the commercialization of this environmentally friendly method. In addition, microbial electrosynthesis which utilizes an electroactive bio-film electrode as a catalyst can be considered as another option to reduce CO₂. This review highlights the methods which can contribute to the increase in efficiency of carbon dioxide reduction (CO₂R) processes through electrode structure with the introduction of various electrolytes such as ionic liquid, sulfate, and bicarbonate electrolytes, with the control of pH and with the control of the operating pressure and temperature of the electrolyzer. It also presents the research status, a fundamental understanding of carbon dioxide reduction reaction (CO₂RR) mechanisms, the development of electrochemical CO₂R technologies, and challenges and opportunities for future research. Full article

(This article belongs to the Special Issue Photo(electro)catalysts: Design, Synthesis and Molecular Applications)

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