Nanostructured Photocatalysts for Hydrogen Production

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

Deadline for manuscript submissions: 10 June 2025 | Viewed by 444

Special Issue Editors


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Guest Editor
Department of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
Interests: material chemistry; nanochemistry; heterogeneous catalysis; photocatalysis
Special Issues, Collections and Topics in MDPI journals

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Guest Editor Assistant
Department of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China
Interests: nano-polyoxometalate; photocatalyst; H2 evolution; overall reaction; directed charge transfer

Special Issue Information

Dear Colleagues,

As the limitations of fossil fuels become increasingly evident, the development of photocatalysts for hydrogen production has emerged as a crucial step in our quest for clean and sustainable energy solutions. Nanostructured materials offer a promising path forward through solar-driven water splitting, owing to their exceptional light absorption, charge separation efficiency, and catalytic performance. Despite these advantages, challenges such as optimizing performance, stability, and cost-effectiveness persist. To address these challenges, innovative strategies are being actively pursued, including the development of hybrid materials, the precise engineering of nanostructures, and advanced computational modeling.

This Special Issue aims to highlight the latest research and breakthroughs in nanostructured photocatalysts for hydrogen production. At the same time, we are equally interested in advancements in other photocatalytic reactions, such as nitrogen fixation, CO2 reduction, hydrogen peroxide production, etc. We invite submissions of original research articles and reviews that explore novel synthesis techniques, comprehensive characterization, insightful studies on structure–property correlations, and pioneering applications. Contributions that provide new theoretical insights and experimental data to enhance our understanding of photocatalytic hydrogen evolution are especially encouraged.

Sincerely,

Prof. Dr. Chunzheng Wu
Guest Editor

Dr. Huafeng Li
Guest Editor Assistant

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Keywords

  • H2 evolution
  • photocatalysis
  • water splitting
  • nanocrystals
  • hybrid
  • hydrogen peroxide

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Published Papers (1 paper)

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Research

14 pages, 2373 KiB  
Article
Isomeric Anthraquinone-Based Covalent Organic Frameworks for Boosting Photocatalytic Hydrogen Peroxide Generation
by Shengrong Yan, Songhu Shi, Wenhao Liu, Fang Duan, Shuanglong Lu and Mingqing Chen
Catalysts 2025, 15(6), 556; https://doi.org/10.3390/catal15060556 - 3 Jun 2025
Viewed by 63
Abstract
Utilizing isomeric monomers to construct covalent organic frameworks (COFs) could easily and precisely regulate their structure in order to raise the photocatalytic performance towards two-step single-electron oxygen reduction reaction (ORR) to hydrogen peroxide (H2O2). Herein, isomeric anthraquinone (AQ)-based COFs [...] Read more.
Utilizing isomeric monomers to construct covalent organic frameworks (COFs) could easily and precisely regulate their structure in order to raise the photocatalytic performance towards two-step single-electron oxygen reduction reaction (ORR) to hydrogen peroxide (H2O2). Herein, isomeric anthraquinone (AQ)-based COFs (designated as 1,4-DQTP and 2,6-DQTP) were successfully fabricated through a simple yet effective one-step solvothermal synthesis approach, only utilizing isomeric monomers with alterations in the catalysts. Specifically, the black 1,4-DQTP displayed a high photocatalytic H2O2 production rate of 865.4 µmol g−1 h−1, with 2.44-fold enhancement compared to 2,6-DQTP (354.7 µmol g−1 h−1). Through a series of experiments such as electron paramagnetic resonance (EPR) spectroscopy and the free radical quenching experiments, as well as density functional theory (DFT) calculations, the photocatalytic mechanism revealed that compared with 2,6-DQTP, 1,4-DQTP possessed a stronger and broader visible light absorption capacity, and thus generated more photogenerated e-h+ pairs. Ultimately, more photogenerated electrons were enriched on the AQ motif via a more apparent electron push–pull effect, which provided a stable transfer channel for e and thus facilitated the generation of superoxide anion radical intermediates (•O2). On the other hand, the negative charge region of AQ’s carbonyl group evidently overlapped with that of TP, indicating that 1,4-DQTP had a higher chemical affinity for the uptake of protons, and thus afforded a more favorable hydrogen donation for H+. As a consequence, the rational design of COFs utilizing isomeric monomers could synergistically raise the proton-coupled electron transfer (PCET) kinetics for two-step single-electron ORR to H2O2 under visible light illumination. This work provides some insights for the design and fabrication of COFs through rational isomer engineering to modulate their photocatalytic activities. Full article
(This article belongs to the Special Issue Nanostructured Photocatalysts for Hydrogen Production)
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