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Catalysts
Special Issues
Latest Advances and the Prospects of Photo(electro)catalytic Application of Nanomaterials
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Latest Advances and the Prospects of Photo(electro)catalytic Application of Nanomaterials

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Nanostructured Catalysts".

Deadline for manuscript submissions: closed (15 October 2023) | Viewed by 1283

Special Issue Editor

Dr. Jiale Xie

E-Mail Website
Guest Editor
School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
Interests: photoelectrochemical water/urea splitting; low-dimensional semiconductive nanomaterials; metal–organic frameworks; photoelectrocatalysis

Special Issue Information

Dear Colleagues,

Nanomaterials are receiving increasing interest for their potential photo(electro)catalytic applications in areas such as solar water splitting, carbon dioxide reduction, nitrogen reduction reaction, hydrogen evolution reaction, organic matter degradation, etc. Photo(electro)catalysis enabled thermodynamically and dynamically difficult reactions to proceed at low temperatures due to the activation of energetic electrons. Compared to conventional catalysis, photo(electro)catalysis has proven itself to be a fast, facile and environmentally friendly approach for catalytic reaction. Photo(electro)catalysis generally shows high catalytic activity and stability in applications pertaining to energy and catalysis.

Despite the growing interest in photo(electro)catalysis for energy and environmental applications, the photo(electro)catalytic reaction mechanism of nanomaterials remains obscure due to the complicated physical and chemical processes involved. A major effort is needed from across the whole scientific community to enhance our understanding of the controllable preparation and involved mechanisms of photo(electro)catalysis, and to widen its application scope in energy and environmental fields.

Researchers in the field are invited to enter submissions to this Special Issue in the form of original research papers or short reviews covering the synthesis and application of nanomaterials for photo(electro)catalysis.

Dr. Jiale Xie
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. Catalysts 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 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

  • photoelectrocatalysis
  • photocatalysis
  • electrocatalysis
  • water splitting
  • carbon dioxide reduction
  • nitrogen reduction reaction
  • organic matter degradation
  • hydrogen pruduction

Published Papers (1 paper)

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Research

14 pages, 4633 KiB  
Article
In Situ Transition of a Nickel Metal–Organic Framework on TiO2 Photoanode towards Urea Photoelectrolysis
by Jie Ren, Pingping Yang, Liuliu Wang, Hongyu Chen, Xingyu Lu, Qing Yang, Li Zou, Cheng Huang and Jiale Xie
Catalysts 2023, 13(4), 727; https://doi.org/10.3390/catal13040727 - 12 Apr 2023
Cited by 1 | Viewed by 1124
Abstract
Photoelectrochemical (PEC) urea splitting is of great significance for urea wastewater remediation and hydrogen production with low energy consumption simultaneously. Nickel hydroxides as electrocatalysts have been widely investigated for urea electrolysis. However, it is an open question how to synthesize highly catalytic Ni(OH) [...] Read more.
Photoelectrochemical (PEC) urea splitting is of great significance for urea wastewater remediation and hydrogen production with low energy consumption simultaneously. Nickel hydroxides as electrocatalysts have been widely investigated for urea electrolysis. However, it is an open question how to synthesize highly catalytic Ni(OH)2 for the PEC urea splitting. Herein, we take advantage of the instability of metal–organic frameworks (MOFs) to perform an in situ synthesis of Ni(OH)2 catalysts on the surface of TiO2 nanorod arrays. This transformed Ni(OH)2 (T-Ni(OH)2) possesses a superior PEC catalytic activity for water/urea splitting in comparison to the Ni(OH)2 prepared by the impregnation method. The in situ transition of a Ni-MOF is accomplished through an electrochemical treatment under AM1.5G illumination in a KOH-and-urea mixed electrolyte. The specific transition mechanism of Ni-MOFs is the substitution of ligands with OH− in a 1 M KOH electrolyte and the successive phase transition. The T-Ni(OH)2@TiO2 photoanode delivers a high photocurrent density of 1.22 mA cm−2 at 1.23 VRHE, which is 4.7 times that of Ni(OH)2@TiO2 prepared with the impregnation method. The onset potential of T-Ni(OH)2@TiO2 is negatively shifted by 118 mV in comparison to TiO2. Moreover, the decline of photocurrent during the continuous test can be recovered after the electrochemical and light treatments. Full article
(This article belongs to the Special Issue Latest Advances and the Prospects of Photo(electro)catalytic Application of Nanomaterials)
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