Artificial Photosynthesis for Hydrogen Generation and Carbon Dioxide Reduction

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

Deadline for manuscript submissions: closed (28 February 2021) | Viewed by 3562

Special Issue Editor

Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
Interests: electrocatalysts; hydrogen evolution reaction; oxygen evolution reaction; carbon dioxide reduction reaction; nitrogen reduction reaction

Special Issue Information

Dear Colleagues,

As you may know, the solar energy that is received by the earth is about 3.85 106 EJ annually, which is way more than the energy we consume globally per year, while only 0.078% of the total amount of solar energy is used in photosynthesis to generate valuable chemicals indispensable to human beings. Actively utilizing solar energy to produce fuels such as hydrogen, methanol, ethanol, etc. is expected to largely reduce the dependence of human society on fossil fuels and might thus be helpful in cutting carbon emissions and realize sustainability. Artificial photosynthesis that combines materials science, photocatalysis, and photoelectrochemistry to mimic natural photosynthesis has been regarded as one feasible strategy in harvesting solar fuels, whereas the efficiency of solar-to-fuel is still too low due to many limitations, such as low intrinsic activity and selectivity of photocatalysts, easiness of electron-hole recombination, inferior photostability of photoelectrodes, etc. Tremendous efforts are still required to address these limitations.

In this scenario, I cordially invite you to contribute your original research work and review articles to this Special Issue titled “Artificial Photosynthesis for Hydrogen Generation and Carbon Dioxide Reduction”. Specifically, manuscripts with topics on efficient hydrogen generation or carbon dioxide reduction realized through photocatalysis or photoelectrochemistry are very welcomed. Some research articles on electrocatalysis that can achieve the same goals of fuels generation can also be considered, as electrocatalysis is promising to be coupled with photovoltaics in the future for solar-to-fuel conversion.

Dr. Tianyi Kou
Guest Editor

Manuscript Submission Information

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Keywords

  • Artificial photosynthesis
  • Solar energy
  • Photocatalysts
  • Photoelectrodes
  • Electrocatalysts
  • Hydrogen generation
  • Carbon dioxide reduction

Published Papers (1 paper)

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Research

12 pages, 4056 KiB  
Article
Pt Deposites on TiO2 for Photocatalytic H2 Evolution: Pt Is Not Only the Cocatalyst, but Also the Defect Repair Agent
by Zhan Shu, Yandi Cai, Jiawei Ji, Changjin Tang, Shuohan Yu, Weixin Zou and Lin Dong
Catalysts 2020, 10(9), 1047; https://doi.org/10.3390/catal10091047 - 11 Sep 2020
Cited by 12 | Viewed by 2966
Abstract
Pt, as a common cocatalyst, has been widely used in photocatalytic H2 evolution. However, the specific role of Pt in photocatalytic H2 evolution has not been thoroughly studied. In this paper, by employing three Pt sources with different charges (positive, negative [...] Read more.
Pt, as a common cocatalyst, has been widely used in photocatalytic H2 evolution. However, the specific role of Pt in photocatalytic H2 evolution has not been thoroughly studied. In this paper, by employing three Pt sources with different charges (positive, negative and neutral), we systematically studied the charge effect of Pt sources on photocatalytic H2 evolution via TiO2 catalyst. According to the results of Raman, X-ray photoelectron spectroscopy (XPS), recycle experiments and photocurrent characterizations, it was found that TiO2 would produce electropositive defects during photocatalytic H2 evolution, inevitably leading to the decline of H2 production activity. Thanks to the electrostatic interaction, the electronegative Pt source not only promoted charge separation, but preferential deposited on electropositive defects, which acted as the defect repair agent, and thus resulted in the increased photocatalytic stability. This work may provide a new perspective for enhancing photocatalytic stability of hydrogen production. Full article
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