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Photoelectrochemical degradation of selected organic substances on Fe2O3 photoanodes: a comparison with TiO2

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43925301" target="_blank" >RIV/60461373:22310/23:43925301 - isvavai.cz</a>

  • Alternative codes found

    RIV/60461373:22350/23:43925301

  • Result on the web

    <a href="https://link.springer.com/article/10.1007/s43630-022-00324-x" target="_blank" >https://link.springer.com/article/10.1007/s43630-022-00324-x</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1007/s43630-022-00324-x" target="_blank" >10.1007/s43630-022-00324-x</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Photoelectrochemical degradation of selected organic substances on Fe2O3 photoanodes: a comparison with TiO2

  • Original language description

    The photoelectrochemical degradation of selected aromatic substances, acid orange 7 (AO7), salicylic acid (SA), benzoic acid (BA), and 4-chlorophenol (4-CP) was studied on hematite (α-Fe2O3) and compared with titanium dioxide (TiO2), both deposited as thin films on conducting substrates (FTO/glass). Batch type reactors were used under backside and front side illumination. Electrical bias was applied on the semiconducting electrodes, such that only valence band processes leading to oxidative pathways were followed. The initial Faradaic efficiency, f0, of degradation processes was determined from the UV–Vis absorbance decrease of the starting materials. f0 for 1 mM AO7 degradation in 0.01 M sulphuric acid was found to be 7.5%. When the pH of the solution was neutral (pH 7.2) or alkaline (pH 13), f0 decreased to 1.7%. For 1 mM SA, f0 was 6.2% on hematite photoanodes and 6.1% on titanium dioxide. For 1 mM benzoic acid and 4-chlorophenol, f0 was an order of magnitude lower, but only on hematite. This is ascribed to the lack of OH· radical formation on hematite, which seems to be essential for the photooxidation of these compounds.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Result continuities

  • Project

    <a href="/en/project/GA20-11635S" target="_blank" >GA20-11635S: Advanced oxide based semiconductor photoelectrodes for solar energy conversion and water treatment</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2023

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Photochemical &amp; Photobiological Sciences

  • ISSN

    1474-905X

  • e-ISSN

    1474-9092

  • Volume of the periodical

    22

  • Issue of the periodical within the volume

    Neuvedeno

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    8

  • Pages from-to

    419-426

  • UT code for WoS article

    000877397100002

  • EID of the result in the Scopus database

    2-s2.0-85141102873