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Nanomaterials
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Advanced Nanomaterials for Photocatalysis and Photo(electro)catalysis
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Advanced Nanomaterials for Photocatalysis and Photo(electro)catalysis

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 5442

Special Issue Editors

Prof. Dr. Zebin Yu

E-Mail Website
Guest Editor
School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
Interests: design and regulation of low-dimensional photocatalytic materials; photocatalytic water splitting for hydrogen evolution; photocatalytic degradation of recalcitrant organics; photo-electrochemical systems
Dr. Yanping Hou

E-Mail Website
Guest Editor
School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
Interests: hybrid photocatalysts design; photocatalytic elimination of refractory organics and combined pollutants; photocatalytic reduction of carbon dioxide; bio-photo-electrochemical processes for pollutants degradation and energy recovery

Special Issue Information

Dear Colleagues,

Nanotechnology is one of the most promising advanced technologies in the world, and nanomaterials play an important role in the field of science and technology, especially in the area of catalysis.  In particular, photocatalysis and photo-electro-catalysis are appealing application-driven research fields in catalysis, since they represent a sustainable strategy for carrying out chemical transformations and play essential roles in many important technologies, including sustainable energy conversion (e.g., the production of solar fuels), environmental pollution abatement, as well as the synthesis of useful molecules. Rational design and fabrication of efficient nano-photocatalysts or photo(electro)catalysts, as well as fundamental understanding of catalytic reactions are still highly desired, which, to some extent, determines the pace of practical application of photo(electro)catalysis for various technologies. 

The purpose of the present Special Issue is to elucidate the state-of-the-art of this growing research field from a fundamental and application perspective. Concretely, this Special Issue seeks to publish cutting-edge scientific advances in photo(electro)catalysis, with several key issues on the development of novel catalysts and synthetic methods, exploring physicochemical properties, structure-activity relationship, stability, and durability, as well as mechanism of catalytic reactions on the nano-photocatalysts/photo(electro)catalysts based on experimental studies and theoretical simulation.

The format of welcomed articles includes original research articles, communications, and reviews. Apart from papers on fundamental research, reports on industrial applications of photo(electro)catalysis processes in various fields are also welcomed. Potential topics include, but are not limited to, the following:

  • Photo(electro)catalytic degradation of pollutants;
  • Photo(electro)catalytic water splitting;
  • Photo(electro)catalytic reduction of carbon dioxide;
  • Photo(electro)catalysis for hydroperoxide generation.

Prof. Dr. Zebin Yu
Dr. Yanping Hou
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. Nanomaterials 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 2900 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

  • heterojunction photocatalysts
  • two-dimensional nanomaterials
  • nanostructures
  • morphological control
  • modification strategies
  • interfacial reactions
  • charge transfer
  • quantum efficiency
  • simulation and modeling
  • stability

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Research

17 pages, 5520 KiB  
Article
Enhancing Visible Light Photocatalytic Degradation of Bisphenol A Using BiOI/Bi2MoO6 Heterostructures
by Magaly Y. Nava Núñez, Moisés Ávila Rehlaender, Azael Martínez-de la Cruz, Arturo Susarrey-Arce, Francisco Mherande Cuevas-Muñiz, Margarita Sánchez-Domínguez, Tania E. Lara-Ceniceros, José Bonilla-Cruz, Alejandro Arizpe Zapata, Patricia Cerda Hurtado, Michael Pérez-Rodríguez, Aldo Ramírez Orozco, Lucy T. González and Francisco Enrique Longoria-Rodríguez
Nanomaterials 2023, 13(9), 1503; https://doi.org/10.3390/nano13091503 - 28 Apr 2023
Cited by 3 | Viewed by 1865
Abstract
With the growing population, access to clean water is one of the 21st-century world’s challenges. For this reason, different strategies to reduce pollutants in water using renewable energy sources should be exploited. Photocatalysts with extended visible light harvesting are an interesting route to [...] Read more.
With the growing population, access to clean water is one of the 21st-century world’s challenges. For this reason, different strategies to reduce pollutants in water using renewable energy sources should be exploited. Photocatalysts with extended visible light harvesting are an interesting route to degrade harmful molecules utilized in plastics, as is the case of Bisphenol A (BPA). This work uses a microwave-assisted route for the synthesis of two photocatalysts (BiOI and Bi2MoO6). Then, BiOI/Bi2MoO6 heterostructures of varied ratios were produced using the same synthetic routes. The BiOI/Bi2MoO6 with a flower-like shape exhibited high photocatalytic activity for BPA degradation compared to the individual BiOI and Bi2MoO6. The high photocatalytic activity was attributed to the matching electronic band structures and the interfacial contact between BiOI and Bi2MoO6, which could enhance the separation of photo-generated charges. Electrochemical, optical, structural, and chemical characterization demonstrated that it forms a BiOI/Bi2MoO6 p-n heterojunction. The free radical scavenging studies showed that superoxide radicals (O2•−) and holes (h+) were the main reactive species, while hydroxyl radical (•OH) generation was negligible during the photocatalytic degradation of BPA. The results can potentiate the application of the microwave synthesis of photocatalytic materials. Full article
(This article belongs to the Special Issue Advanced Nanomaterials for Photocatalysis and Photo(electro)catalysis)
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8 pages, 3430 KiB  
Article
Visible Photocatalytic Hydrogen Evolution by g-C3N4/SrZrO3 Heterostructure Material
by Shizhao Si, Yanfei Fan, Dan Liang, Ping Chen, Guanwei Cui and Bo Tang
Nanomaterials 2023, 13(6), 977; https://doi.org/10.3390/nano13060977 - 8 Mar 2023
Cited by 4 | Viewed by 1515
Abstract
A heterostructure material g-C3N4/SrZrO3 was simply prepared by grinding and heating the mixture of SrZrO3 and g-C3N4. The morphology and structure of the synthesized photocatalysts were determined by scanning electron microscopy (SEM), X-ray [...] Read more.
A heterostructure material g-C3N4/SrZrO3 was simply prepared by grinding and heating the mixture of SrZrO3 and g-C3N4. The morphology and structure of the synthesized photocatalysts were determined by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), high-resolution transmission electron microscopy (HRTEM) and infrared spectra. It showed visible light absorption ability and much higher photocatalytic activity than that of pristine g-C3N4 or SrZrO3. Under the optimal reaction conditions, the hydrogen production efficiency is 1222 μmol·g−1·h−1 and 34 μmol·g−1·h−1 under ultraviolet light irradiation and visible light irradiation, respectively. It is attributed to the higher separation efficiency of photogenerated electrons and holes between the cooperation of g-C3N4 and SrZrO3, which is demonstrated by photocurrent measurements. Full article
(This article belongs to the Special Issue Advanced Nanomaterials for Photocatalysis and Photo(electro)catalysis)
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18 pages, 5175 KiB  
Article
Photoelectrochemical Performance of Strontium Titanium Oxynitride Photo-Activated with Cobalt Phosphate Nanoparticles for Oxidation of Alkaline Water
by Mabrook S. Amer, Prabhakarn Arunachalam, Mohamed A. Ghanem, Abdullah M. Al-Mayouf and Mark T. Weller
Nanomaterials 2023, 13(5), 920; https://doi.org/10.3390/nano13050920 - 1 Mar 2023
Cited by 2 | Viewed by 1658
Abstract
Photoelectrochemical (PEC) solar water splitting is favourable for transforming solar energy into sustainable hydrogen fuel using semiconductor electrodes. Perovskite-type oxynitrides are attractive photocatalysts for this application due to their visible light absorption features and stability. Herein, strontium titanium oxynitride (STON) containing anion vacancies [...] Read more.
Photoelectrochemical (PEC) solar water splitting is favourable for transforming solar energy into sustainable hydrogen fuel using semiconductor electrodes. Perovskite-type oxynitrides are attractive photocatalysts for this application due to their visible light absorption features and stability. Herein, strontium titanium oxynitride (STON) containing anion vacancies of SrTi(O,N)3−δ was prepared via solid phase synthesis and assembled as a photoelectrode by electrophoretic deposition, and their morphological and optical properties and PEC performance for alkaline water oxidation are investigated. Further, cobalt-phosphate (CoPi)-based co-catalyst was photo-deposited over the surface of the STON electrode to boost the PEC efficiency. A photocurrent density of ~138 μA/cm at 1.25 V versus RHE was achieved for CoPi/STON electrodes in presence of a sulfite hole scavenger which is approximately a four-fold enhancement compared to the pristine electrode. The observed PEC enrichment is mainly due to the improved kinetics of oxygen evolution because of the CoPi co-catalyst and the reduced surface recombination of the photogenerated carriers. Moreover, the CoPi modification over perovskite-type oxynitrides provides a new dimension for developing efficient and highly stable photoanodes in solar-assisted water-splitting reactions. Full article
(This article belongs to the Special Issue Advanced Nanomaterials for Photocatalysis and Photo(electro)catalysis)
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