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Advances in Photocatalytic Hydrogen Generation and CO2 Reduction

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Catalytic Materials".

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 1803

Special Issue Editors

State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
Interests: photocatalysis; electrocatalysis; photo-electrocatalysis; CO2 reduction; water splitting; chemical energy conversion; artificial photosynthesis
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Guest Editor
Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, China
Interests: metal nanomaterials; single-atom catalytic materials; photocatalytic; electro-catalysis; thermo-catalysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Solar energy conversion and utilization have undergone great development in the past few years. The study of novel photocatalytic materials and their surfaces has led to many exciting advancements in the field of catalysis. Photocatalysis is an emerging technique for converting solar energy into renewable and storable chemical energy in chemical bonds. Solar-driven hydrogen generation and CO2 reduction is one of the most promising techniques for future energy consumption, and various new methods and sustainable efforts have been developed. Thus far, a great number of homogeneous systems, nano-systems, and polymer systems have been proven effective in photocatalytic reactions due to their unique catalytic properties and the ideal bandgap of the material structure, acting as a milestone for future studies. The effective development of photocatalytic activity is enabled by the tunable electronic structure, ideal bandgap, flexibility for doping and defect formation, and the presence of highly active sites in novel photocatalytic materials. There are many promising materials that will continue to help in addressing the current worldwide energy issue.

This Special Issue aims to summarize the progress and advances in the development of new photocatalysts and photocatalytic systems for hydrogen generation and CO2 reduction. You are invited to submit contributions presenting your recent research articles, reviews, and brief communications revealing new trends in the research on photocatalytic hydrogen generation and CO2 reduction. Hence, immense challenges and opportunities remain in realizing this technology for large-scale practical applications in the decontamination of the environment and the generation of clean energy.

Dr. Heng Rao
Dr. Zhiyuan Wang
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. Materials 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 2600 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

  • photocatalysis
  • hydrogen
  • water splitting
  • CO2 reduction
  • solar energy
  • energy conversion

Published Papers (2 papers)

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Research

12 pages, 6107 KiB  
Article
Fe- and S-Modified BiOI as Catalysts to Oxygen Evolution and Hydrogen Evolution Reactions in Overall Photoelectrochemical Water Splitting
by Yu Lei, Hongdian Chen, Chenyang Shu and Changguo Chen
Materials 2024, 17(1), 6; https://doi.org/10.3390/ma17010006 - 19 Dec 2023
Viewed by 662
Abstract
Developing catalysts with superior activity to hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is equally important to the overall photoelectrochemical water splitting to produce hydrogen. In this work, bismuth oxyiodide (BiOI), iron-modified bismuth iodide Fe/BiOI, and the sulfurized S-Fe/BiOI were prepared [...] Read more.
Developing catalysts with superior activity to hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is equally important to the overall photoelectrochemical water splitting to produce hydrogen. In this work, bismuth oxyiodide (BiOI), iron-modified bismuth iodide Fe/BiOI, and the sulfurized S-Fe/BiOI were prepared using the solvothermal method. The three materials all have good absorption ability for visible light. The photoelectrochemical catalytic activity of BiOI to oxygen evolution reaction (OER) is significantly enhanced after iron modification, while the sulfurized product S-Fe/BiOI exhibits better catalytic activity to hydrogen evolution reaction (HER). Hence, OER and HER can be simultaneously catalyzed by using Fe/BiOI and S-Fe/BiOI as anodic and cathodic catalysts to facilitate the overall photoelectrochemical water splitting process. Full article
(This article belongs to the Special Issue Advances in Photocatalytic Hydrogen Generation and CO2 Reduction)
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15 pages, 6553 KiB  
Article
MOF-Derived Spindle-Shaped Z-Scheme ZnO/ZnFe2O4 Heterojunction: A Magnetic Recovery Catalyst for Efficient Photothermal Degradation of Tetracycline Hydrochloride
by Shilong Suo, Wenmei Ma, Siyi Zhang, Ziwu Han, Yumin Wang, Yuanyuan Li, Yi Xiong, Yong Liu, Chunqing He and Pengfei Fang
Materials 2023, 16(20), 6639; https://doi.org/10.3390/ma16206639 - 11 Oct 2023
Cited by 2 | Viewed by 775
Abstract
The development of photocatalysts with a wide spectral response and effective carrier separation capability is essential for the green degradation of tetracycline hydrochloride. In this study, a magnetic recyclable Z-scheme ZnO/ZnFe2O4 heterojunction (ZZF) was successfully constructed via the solid phase [...] Read more.
The development of photocatalysts with a wide spectral response and effective carrier separation capability is essential for the green degradation of tetracycline hydrochloride. In this study, a magnetic recyclable Z-scheme ZnO/ZnFe2O4 heterojunction (ZZF) was successfully constructed via the solid phase method, using MIL-88A(Fe)@Zn as the precursor. An appropriate band gap width and Z-scheme charge transfer mechanism provide ZZF with excellent visible light absorption performance, efficient charge separation, and a strong redox ability. Under visible light irradiation, the degradation efficiency of tetracycline hydrochloride for the optimal sample can reach 86.3% within 75 min in deionized water and 92.9% within 60 min in tap water, exhibiting superior stability and reusability after five cycles. Moreover, the catalyst in the water can be conveniently recovered by magnetic force. After visible light irradiation for 70 min, the temperature of the reaction system increased by 21.9 °C. Its degradation constant (35.53 × 10−3 min−1) increased to 5.1 times that at room temperature (6.95 × 10−3 min−1). Using thermal energy enhances the kinetic driving force of the reactants and facilitates carrier migration, meaning that more charge is available for the production of •O2 and •OH. This study provides a potential candidate for the efficient degradation of tetracycline hydrochloride by combining thermal catalysis with a photocatalytic heterojunction. Full article
(This article belongs to the Special Issue Advances in Photocatalytic Hydrogen Generation and CO2 Reduction)
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