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Multifunctional photoelectroactive platform for CO2 reduction toward C2+ products-programmable selectivity with a bioinspired polymer coating

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    SYSNO ASEP0552632
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleMultifunctional photoelectroactive platform for CO2 reduction toward C2+ products-programmable selectivity with a bioinspired polymer coating
    Author(s) Děkanovský, L. (CZ)
    Plutnar, J. (CZ)
    Šturala, J. (CZ)
    Brus, Jiří (UMCH-V) RID, ORCID
    Kosina, J. (CZ)
    Azadmanjiri, J. (CZ)
    Sedmidubský, D. (CZ)
    Sofer, Z. (CZ)
    Khezri, B. (CZ)
    Source TitleACS Catalysis - ISSN 2155-5435
    Roč. 12, č. 2 (2022), s. 1558-1571
    Number of pages14 s.
    Languageeng - English
    CountryUS - United States
    KeywordsCO2 reduction ; electrochemical ; photoelectrochemical
    Subject RIVCD - Macromolecular Chemistry
    OECD categoryPolymer science
    Method of publishingLimited access
    Institutional supportUMCH-V - RVO:61389013
    UT WOS000743230900001
    EID SCOPUS85123380803
    AnnotationIn recent years, CO2 photo/electroreduction has received great attention due to the urges and concerns to solve problems connected with global warming, for example, reducing the consumption of fossil fuels as energy sources and switching to renewable energy sources. The realization of this technology depends on efficient photo/electrocatalysts with high selectivity for the products. Herein, we report a programmable, bifunctional, scalable, high-performance, and low-cost bioinspired catalyst for photo/electrochemical CO2 reduction (P/EC-R). We synthesized hydroxyapatite (HAP) needle-like nanoparticles coated with a functional polydopamine polymer (HAP/P(DOPA)) and then modified them with copper nanoparticles (HAP/P(DOPA)/Cu NPs). It was expected that HAP and P(DOPA), due to their plentiful functional groups such as hydroxyl (−OH–), oxygen (−O•– and ═O), and amines (−NH2 and −NH−), provide extensive active catalytic sites, participate in the capture, maintenance, and hydrogenation of the CO2 intermediate, and offer a combination of efficient electrical conduction and photoactivity and synergistic effect together with Cu nanoparticles, thus potentially empowering CO2 P/EC-R. Interestingly, varying the polymerization time of the coating layer (P(DOPA)) leads to different product selectivities in both photoelectrochemical and electrochemical reactions. In a shorter polymerization period (2 h), CO (>83%) is the main product, while for 5 and 15 h, C2H6 (>70%) and CH4 (>74%) are the main products, respectively. It is noteworthy to mention that as the applied potential increased (>−1.2 V vs RHE), propanal (C3H6O, FE > 35%) and surprisingly ethyl acetate (C4H8O2, FE > 67%) have been detected. This is the first report on the C4 product.
    WorkplaceInstitute of Macromolecular Chemistry
    ContactEva Čechová, ; Tel.: 296 809 358
    Year of Publishing2023
    Electronic address
Number of the records: 1