Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.3
3.9
Journals
Catalysts
Special Issues
Advances in Water Oxidation Catalysis
share announcement

Advances in Water Oxidation Catalysis

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

Deadline for manuscript submissions: closed (15 October 2020) | Viewed by 2989

Special Issue Editors

Prof. Dr. Yusuke Yamada

E-Mail Website
Guest Editor
Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, Osaka 558-8585, Japan
Interests: artificial photosynthesis and removal of harmful chemicals by heterogeneous catalysis of not only traditional metal oxide, but also nanoparticles and coordination polymers
Dr. Dachao Hong

E-Mail Website1 Website2
Co-Guest Editor
Researcher, Innovative Oxidation Team Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology (AIST) Central 5-2, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
Interests: water oxidation; CO2 reduction; heterogeneous and homogeneous catalysis; photocatalysis; metal complexes; nanomaterials; reaction mechanism

Special Issue Information

Dear Colleagues,

Photocatalytic water oxidation is the most crucial step of photosynthesis, in which solar energy is converted into chemical energy. The water oxidation process usually involves four protons’ and four electrons’ transfer from two water molecules to generate molecular oxygen, resulting in active catalysts being necessary to achieve high efficiency. A highly efficient catalyst for photocatalytic water oxidation is found in the oxygen evolving center, OEC, in photosystem II. The crystal structure of the active site, CaMn4O5 cluster, was unveiled through X-ray crystallography; however, the reaction mechanism is hotly disputed. On the other hand, artificial photosynthesis systems constructed by mimicking the natural photosynthesis system often utilize metal oxides or metal complexes as water oxidation catalysts, where catalysis enhancement is strongly demanded for efficient energy conversion.

Recent advances in reaction mechanisms of water oxidation catalysis (WOC), including not only OEC but also metal oxides or metal complexes, are main topics of this themed Special Issue. Additionally, another important topic is how to incorporate water oxidation catalysts in artificial photosynthesis systems for production of valuable chemicals.

Prof. Dr. Yusuke Yamada
Dr. Dachao Hong
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. 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

  • water oxidation catalysts
  • reaction mechanism
  • OEC
  • metal oxides
  • metal complexes
  • artificial photosynthesis

Published Papers (1 paper)

Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

14 pages, 4102 KiB  
Article
Immobilization of Ir(OH)3 Nanoparticles in Mesospaces of Al-SiO2 Nanoparticles Assembly to Enhance Stability for Photocatalytic Water Oxidation
by Gentaro Sakamoto, Hiroyasu Tabe and Yusuke Yamada
Catalysts 2020, 10(9), 1015; https://doi.org/10.3390/catal10091015 - 3 Sep 2020
Cited by 2 | Viewed by 2653
Abstract
Iridium hydroxide (Ir(OH)3) nanoparticles exhibiting high catalytic activity for water oxidation were immobilized inside mesospaces of a silica-nanoparticles assembly (SiO2NPA) to suppress catalytic deactivation due to agglomeration. The Ir(OH)3 nanoparticles immobilized in SiO2NPA (Ir(OH)3/SiO [...] Read more.
Iridium hydroxide (Ir(OH)3) nanoparticles exhibiting high catalytic activity for water oxidation were immobilized inside mesospaces of a silica-nanoparticles assembly (SiO2NPA) to suppress catalytic deactivation due to agglomeration. The Ir(OH)3 nanoparticles immobilized in SiO2NPA (Ir(OH)3/SiO2NPA) catalyzed water oxidation by visible light irradiation of a solution containing persulfate ion (S2O82−) and tris(2,2′-bipyridine)ruthenium(II) ion ([RuII(bpy)3]2+) as a sacrificial electron acceptor and a photosensitizer, respectively. The yield of oxygen (O2) based on the used amount of S2O82− was maintained over 80% for four repetitive runs using Ir(OH)3/SiO2NPA prepared by the co-accumulation method, although the yield decreased for the reaction system using Ir(OH)3/SiO2NPA prepared by the equilibrium adsorption method or Ir(OH)3 nanoparticles without SiO2NPA support under the same reaction conditions. Immobilization of Ir(OH)3 nanoparticles in Al3+-doped SiO2NPA (Al-SiO2NPA) results in further enhancement of the catalytic stability with the yield of more than 95% at the fourth run of the repetitive experiments. Full article
(This article belongs to the Special Issue Advances in Water Oxidation Catalysis)
►▼ Show Figures

Graphical abstract

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-1
Back to TopTop