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Nanomaterials
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Nanomaterials for Novel Photoelectrochemical Devices
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Nanomaterials for Novel Photoelectrochemical Devices

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanoelectronics, Nanosensors and Devices".

Deadline for manuscript submissions: 30 May 2025 | Viewed by 4318

Special Issue Editor

Dr. Youqing Wang

E-Mail Website
Guest Editor
Research Center for Semiconductor Materials and Devices, Shaanxi University of Science and Technology, Xi’an, China
Interests: UV detectors; DSSCs; photoelectrochemical; transparent conductive films; metallic nanomaterials; nanoarrays

Special Issue Information

Dear Colleagues,

Photoelectrochemistry is an interdisciplinary field of photoelectricity and electrochemistry. It studies the optical, electrical, and electrochemical processes in which light interacts with semiconductor and chemical systems. Photoelectrochemical (PEC) devices include PEC photovoltaic cells, PEC photolysis, PEC catalysis, PEC detectors, etc. With the expansion of materials systems and research methods, the current research work on PEC devices has mainly focused on light absorption, photoelectric conversion, charge transport, energy band regulation, solid–liquid interface optimization, redox reactions and the construction of nanostructures. Nanomaterials widely used in anodes and cathodes are crucial for improving the performance of PEC devices, including quantum dots, nanoparticles, nanoarrays, one-dimensional nanomaterials, two-dimensional nanomaterials, etc. (semiconductor, metal, or carbon materials). This Special Issue aims to focus on the synthesis and characterization of various nanomaterials used in PEC devices, and more importantly, the mechanism by which the microscopic properties of nanomaterials affect the performance of devices. We invite our colleagues to join us in researching this interesting area and to provide valuable ideas for the application of PEC devices.

Dr. Youqing Wang
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. 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 2400 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

  • photoelectrochemical
  • nanomaterials
  • photoelectrochemical detectors
  • photocatalysis
  • photolysis
  • photoanodes
  • solid–liquid interface
  • charge transport
  • novel device structures

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

Published Papers (2 papers)

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16 pages, 6624 KiB  
Article
Interface Engineering of CoFe-LDH Modified Ti: α-Fe2O3 Photoanode for Enhanced Photoelectrochemical Water Oxidation
by Yue Chang, Minmin Han, Yehui Ding, Huiyun Wei, Dawei Zhang, Hong Luo, Xiaogang Li and Xiongbo Yan
Nanomaterials 2023, 13(18), 2579; https://doi.org/10.3390/nano13182579 - 18 Sep 2023
Cited by 3 | Viewed by 1951
Abstract
Effectively regulating and promoting the charge separation and transfer of photoanodes is a key and challenging aspect of photoelectrochemical (PEC) water oxidation. Herein, a Ti-doped hematite photoanode with a CoFe-LDH cocatalyst loaded on the surface was prepared through a series of processes, including [...] Read more.
Effectively regulating and promoting the charge separation and transfer of photoanodes is a key and challenging aspect of photoelectrochemical (PEC) water oxidation. Herein, a Ti-doped hematite photoanode with a CoFe-LDH cocatalyst loaded on the surface was prepared through a series of processes, including hydrothermal treatment, annealing and electrodeposition. The prepared CoFe-LDH/Ti:α-Fe2O3 photoanode exhibited an outstanding photocurrent density of 3.06 mA/cm2 at 1.23 VRHE, which is five times higher than that of α-Fe2O3 alone. CoFe-LDH modification and Ti doping on hematite can boost the surface charge transfer efficiency, which is mainly attributed to the interface interaction between CoFe-LDH and Ti:α-Fe2O3. Furthermore, we investigated the role of Ti doping in enhancing the PEC performance of CoFe-LDH/Ti:α-Fe2O3. A series of characterizations and theoretical calculations revealed that, in addition to improving the electronic conductivity of the bulk material, Ti doping also further enhances the interface coupling of CoFe-LDH/α-Fe2O3 and finely regulates the interfacial electronic structure. These changes promote the rapid extraction of holes from hematite and facilitate charge separation and transfer. The informative findings presented in this work provide valuable insights for the design and construction of hematite photoanodes, offering guidance for achieving excellent performance in photoelectrochemical (PEC) water oxidation. Full article
(This article belongs to the Special Issue Nanomaterials for Novel Photoelectrochemical Devices)
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12 pages, 5766 KiB  
Article
High Temperature-Resistant Transparent Conductive Films for Photoelectrochemical Devices Based on W/Ag Composite Nanonetworks
by Menghan Liu, Peiling Ren, Hu Qiao, Miaomiao Zhang, Wenxuan Wu, Baoping Li, Hongjun Wang, Daobin Luo, Jianke Liu and Youqing Wang
Nanomaterials 2023, 13(4), 708; https://doi.org/10.3390/nano13040708 - 12 Feb 2023
Cited by 1 | Viewed by 1804
Abstract
The traditional Ag nanowire preparation means that it cannot meet the demanding requirements of photoelectrochemical devices due to the undesirable conductivity, difficulty in compounding, and poor heat resistance. Here, we prepared an Ag nanonetwork with superior properties using a special template method based [...] Read more.
The traditional Ag nanowire preparation means that it cannot meet the demanding requirements of photoelectrochemical devices due to the undesirable conductivity, difficulty in compounding, and poor heat resistance. Here, we prepared an Ag nanonetwork with superior properties using a special template method based on electrospinning technology. The transparent conductive films based on Ag nanonetworks have good transmittance in a wide range from ultraviolet to visible. It is important that the films have high operability and are easy to be compounded with other materials. After compounding with high-melting-point W metal, the heat-resistance temperature of the W/Ag composite transparent conductive films is increased by 100 °C to 460 °C, and the light transmission and electrical conductivity of the films are not significantly affected. All experimental phenomena in the study are analyzed theoretically. This research can provide an important idea for the metal nanowire electrode, which is difficult to be applied to the photoelectrochemical devices. Full article
(This article belongs to the Special Issue Nanomaterials for Novel Photoelectrochemical Devices)
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