Special Issue "Photocatalytic Water Splitting"
Deadline for manuscript submissions: 30 April 2019
Photocatalytic water splitting constitutes one major goal that addresses both the fundamental science and practical applications of renewable energy production. The Oxygen Evolving Complex (OEC) is the native enzyme that catalyzes the oxidation of water in natural photosynthesis to release oxygen. The creation of biomimetic systems to reproduce the basic chemistry of this process gives us more insight into better understanding this crucial natural reaction which is responsible of the atmospheric oxygen that we breathe. On the other hand, the growing world energy demand, along with the need for control of gas emissions, explains the current relevance of the conversion of solar energy to hydrogen by means of water splitting process. Decomposing water is the more direct way to produce hydrogen, which can be stored and utilized as a transportable fuel or converted into energy-rich organic molecules, to cope with the intermittent character of the solar radiation.
This Special Issue aims to cover recent progress and developments in fabricating stable and highly active catalysts for photochemical water oxidation. Moreover, the research for understanding the fine details of natural photosynthesis, as well as the advances in the area of solar-powered fuel generation, should be important subjects for this Special Issue.
Prof. Dr. Marcelino Maneiro
Dr. Pau Farràs Costa
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 papers will be 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 1600 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.
- Water splitting
- artificial photosynthesis
- hydrogen generation
- oxygen evolution
- carbon dioxide
- renewable energy
- energy storage
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Modeling the OEC with two new biomimetic models: Preparations, structural characterization and water photolysis studies of a Ba-Mn box type complex and a Mn4N6 planar-diamond cluster
Author: Marcelino Maneiro
Affiliation: Department of Inorganic Chemistry, Faculty of Sciences, University of Santiago de Compostela, Lugo 27002, Spain; [email protected]
Abstract: The Oxygen Evolving Complex (OEC) is the native enzyme that catalyzes the oxidation of water in natural photosynthesis. Two new class of manganese cluster complexes (1-2) of formula Ba2Mn2L12(H3L1)2(CH3OH)2 1 and Mn4L26Cl2 2 have been prepared [H4L1 = N,N’-(ethane-1,2-diyl)bis(2-hydroxybenzamide); L2 = methyl picolinimidate) and characterized by standard techniques including microanalysis, IR and UV spectroscopy, paramagnetic 1H NMR spectroscopy, ESI spectrometry and magnetic susceptibility measurements. X-ray diffraction studies of these complexes revealed: (i) a box-type structure for 1, formed by the two redox-active manganese(III) ions and the two barium(II) ions, and connected by two bridging bisamido-bisphenoxy ligand molecules; (ii) a planar-diamond array for the Mn4N6 cluster 2 where the picolinimidates act as chelating ligands through the two nitrogen atoms. The ability of 1-2 to split water has been studied by water photolysis experiments, with the oxygen evolution measured in aqueous media in the presence of p-benzoquinone (acting as hydrogen acceptor), the reduction of which was followed by UV-spectroscopy. The relevant photolytic activity found for 1 contrasts with the inactivity of 2 in the photolytic experiments, and this different behavior is discussed on basis of the structure of the biomimetic models and the proposed reaction mechanism for this process.