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Molecules
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Advance Nanomaterials for Photoelectrochemistry Energy Storage/Generation and Environmental Remediations
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Advance Nanomaterials for Photoelectrochemistry Energy Storage/Generation and Environmental Remediations

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Photochemistry".

Deadline for manuscript submissions: closed (31 May 2024) | Viewed by 4836

Special Issue Editors

Dr. Ibrahim Khan

E-Mail Website
Guest Editor
School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Seoul 06974, Republic of Korea
Interests: morphology-controlled synthesis; water splitting; CO2 conversion; batteries and capacitors; piezoelectrics; electrochemical pathways studies; diffusiophoresis in brine systems
Dr. Muhammad Ashraf

E-Mail Website
Guest Editor
Department of Chemistry, King Fahad University of Petroleum and Minerals, Dharan 31261, Saudi Arabia
Interests: advanced nanomaterials synthesis for solar energy harvesting; generation of energetic redox species via photo(electro)catalysis for water splitting; organic pollutant degradation
Dr. Syed Shaheen Shah

E-Mail Website
Guest Editor
Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan
Interests: development and mechanistic investigation of advanced nanomaterials for electrochemical energy harvesting and storage applications, such as supercapacitors; electrochemical water splitting; and sensors

Special Issue Information

Dear Colleagues,

The Special Issue invites articles on the synthesis of nanomaterials (particularly shape-controlled) for applications such as electrochemical and photoelectrochemical water splitting and CO2 conversion, batteries and capacitors, and piezoelectrics. We also invite articles from the fields of thin film fabrication for solar cells and photovoltaics. Lastly, contributions from photocatalysis involving environmental remediation, electrochemical organic transformations, and electrochemical deposition synthesis are also encouraged.

Dr. Ibrahim Khan
Dr. Muhammad Ashraf
Dr. Syed Shaheen Shah
Guest Editors

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. Molecules is an international peer-reviewed open access semimonthly 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

  • nanomaterials and nanocomposites
  • electrochemical and photoelectrochemical water splitting
  • supercapacitors
  • batteries
  • electrochemical sensors
  • electrochemical CO2 conversion
  • photocatalytic remediations
  • solar cells
  • electrochemical organic transformation
  • electrochemical deposition

Published Papers (2 papers)

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Review

44 pages, 6203 KiB  
Review
Transforming Waste into Wealth: Advanced Carbon-Based Electrodes Derived from Refinery and Coal By-Products for Next-Generation Energy Storage
by Ar Rafi Ferdous, Syed Shaheen Shah, Syed Niaz Ali Shah, Bashir Ahmed Johan, Md Abdullah Al Bari and Md. Abdul Aziz
Molecules 2024, 29(9), 2081; https://doi.org/10.3390/molecules29092081 - 30 Apr 2024
Viewed by 759
Abstract
This comprehensive review addresses the need for sustainable and efficient energy storage technologies against escalating global energy demand and environmental concerns. It explores the innovative utilization of waste materials from oil refineries and coal processing industries as precursors for carbon-based electrodes in next-generation [...] Read more.
This comprehensive review addresses the need for sustainable and efficient energy storage technologies against escalating global energy demand and environmental concerns. It explores the innovative utilization of waste materials from oil refineries and coal processing industries as precursors for carbon-based electrodes in next-generation energy storage systems, including batteries and supercapacitors. These waste-derived carbon materials, such as semi-coke, coal gasification fine ash, coal tar pitch, petroleum coke, and petroleum vacuum residue, offer a promising alternative to conventional electrode materials. They present an optimal balance of high carbon content and enhanced electrochemical properties while promoting environmental sustainability through effectively repurposing waste materials from coal and hydrocarbon industries. This review systematically examines recent advancements in fabricating and applying waste-derived carbon-based electrodes. It delves into the methodologies for converting industrial by-products into high-quality carbon electrodes, with a particular emphasis on carbonization and activation processes tailored to enhance the electrochemical performance of the derived materials. Key findings indicate that while higher carbonization temperatures may impede the development of a porous structure, using KOH as an activating agent has proven effective in developing mesoporous structures conducive to ion transport and storage. Moreover, incorporating heteroatom doping (with elements such as sulfur, potassium, and nitrogen) has shown promise in enhancing surface interactions and facilitating the diffusion process through increased availability of active sites, thereby demonstrating the potential for improved storage capabilities. The electrochemical performance of these waste-derived carbon materials is evaluated across various configurations and electrolytes. Challenges and future directions are identified, highlighting the need for a deeper understanding of the microstructural characteristics that influence electrochemical performance and advocating for interdisciplinary research to achieve precise control over material properties. This review contributes to advancing electrode material technology and promotes environmental sustainability by repurposing industrial waste into valuable resources for energy storage. It underscores the potential of waste-derived carbon materials in sustainably meeting global energy storage demands. Full article
(This article belongs to the Special Issue Advance Nanomaterials for Photoelectrochemistry Energy Storage/Generation and Environmental Remediations)
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15 pages, 2412 KiB  
Review
g-C3N4 Based Photocatalyst for the Efficient Photodegradation of Toxic Methyl Orange Dye: Recent Modifications and Future Perspectives
by Abdulelah Aljuaid, Mazen Almehmadi, Ahad Amer Alsaiari, Mamdouh Allahyani, Osama Abdulaziz, Abdulaziz Alsharif, Jawaher Amer Alsaiari, Magdi Saih, Rema Turki Alotaibi and Idrees Khan
Molecules 2023, 28(7), 3199; https://doi.org/10.3390/molecules28073199 - 4 Apr 2023
Cited by 27 | Viewed by 3363
Abstract
Industrial effluents containing dyes are the dominant pollutants, making the drinking water unfit. Among the dyes, methylene orange (MO) dye is mutagenic, carcinogenic and toxic to aquatic organisms. Therefore, its removal from water bodies through effective and economical approach is gaining increased attention [...] Read more.
Industrial effluents containing dyes are the dominant pollutants, making the drinking water unfit. Among the dyes, methylene orange (MO) dye is mutagenic, carcinogenic and toxic to aquatic organisms. Therefore, its removal from water bodies through effective and economical approach is gaining increased attention in the last decades. Photocatalytic degradation has the ability to convert economically complex dye molecules into non-toxic and smaller species via redox reactions, by using photocatalysts. g-C3N4 is a metal-free n-type semiconductor, typical nonmetallic and non-toxici polymeric photocatalyst. It widely used in photocatalytic materials, due to its easy and simple synthesis, fascinating electronic band structure, high stability and abundant availability. As a photocatalyst, its major drawbacks are its limited efficiency in separating photo-excited electron–hole pairs, high separated charge recombination, low specific surface area, and low absorption coefficient. In this review, we report the recent modification strategies adopted for g-C3N4 for the efficient photodegradation of MO dye. The different modification approaches, such as nanocomposites and heterojunctions, as well as doping and defect introductions, are briefly discussed. The mechanism of the photodegradation of MO dye by g-C3N4 and future perspectives are discussed. This review paper will predict strategies for the fabrication of an efficient g-C3N4-based photocatalyst for the photodegradation of MO dye. Full article
(This article belongs to the Special Issue Advance Nanomaterials for Photoelectrochemistry Energy Storage/Generation and Environmental Remediations)
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