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Abstract
Photocatalytic water splitting using natural solar light is considered as a sustainable approach to generate H2 and O2. While H2 has high market value, the by-product of water splitting, oxygen, is less valuable. To make H2 produced by means of photocatalysis more economically competitive to that generated from methane, its generation is studied together with synthesis of organic compounds that have higher market value. This review summarizes and analyzes critically dehydrogenation reactions that were developed since 1980s. Photocatalytic dehydrogenation reactions are classified and the results are collected in the online database. Performance of homogeneous and heterogenous photocatalysts in dehydrogenation reactions, such as yield rates of organic products on analytical and preparative scales, and quantum efficiencies are compared. Current limitations of the existing methods and photocatalytic systems are identified and directions for the future developments are outlined.
Supplementary weblinks
Title
Database of Photocatalytic Dehydrogenation Reactions CUHK Research Data Repository>Faculty of Science>Department of Chemistry>Oleksandr SAVATIEIEV Research Group>Database of Photocatalytic Dehydrogenation Reactions>Database of Photocatalytic Dehydrogenation Reactions Database of Photocatalytic Dehydrogenation Reactions
Description
This database contains a summary of photocatalytic reactions in which organic transformations are coupled with the production of hydrogen (H2). The database contains 236 entries that were collected from 216 articles published between 1982-2023. The database contains the following information. 1) Source article bibliographic data (first author(s), corresponding author(s), corresponding author(s) affiliation country(ies), article DOI, publication year). 2) Reaction classification according to the type of bond formation (such as C-B, C-C, C-H, C-N, C-O, C-P, C-S, C-Si, S-S, Si-O, N-N); hybridization of carbon atoms involved in the formation of the chemical bond (sp3-, sp2, sp-); cross-coupling (synthesis of a product from two or more reagents) vs. homo-coupling (di- and oligomerization of the reagent); intramolecular cyclization vs. intermolecular cyclization; extent of reagent dehydrogenation (loss of one, two or more H2 molecules). 3) Type of the photocatalyst (homogeneous, heterogeneous), its chemical structure and the amount (moles, grams) used in the reactions, etc.
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