Mo-O-Bi Bonds as interfacial electron transport bridges to fuel CO2 photoreduction via in-situ reconstruction of black Bi2MoO6/ BiO2-x heterojunctionShow others and affiliations
2022 (English)In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 429, article id 132204Article in journal (Refereed) Published
Abstract [en]
High photogenerated carrier separation efficiency plays a crucial role in determining the rate of photocatalytic CO2 reduction, but the directional transfer of carrier remains challenging. Here, improved CO2 photoreduction rate and enhanced stability were realized by in-situ construction of BiO2-x nanoparticles on Bi2MoO6 nanoflowers using H2/Ar low temperature plasma. As evidenced by DFT calculations and photocurrent measurements, the Mo-O-Bi bonds between the Bi2MoO6 and BiO2-x interfaces act as a charge transport bridge, facilitating the directional transport of electrons and thus enhancing the rate of photocatalytic reduction reactions involving multiple electrons. Compared with pristine Bi2MoO6, Bi2MoO6/BiO2-x heterojunction has excellent photostability (12 h) and efficient photocatalytic activity (approximate to 3.0 times). This indicates that the charge transfer bridge can effectively inhibit the charge recombination and deactivation of pristine Bi2MoO6. This interatomic charge transfer bridges mode can not only solve the stability problem of bismuth-based materials, but also help to design more photocatalytic systems for efficient reduction of CO2.
Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA , 2022. Vol. 429, article id 132204
Keywords [en]
Bi2MoO6; Plasma; Photocatalyst; CO2 reduction
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-181901DOI: 10.1016/j.cej.2021.132204ISI: 000728401100003OAI: oai:DiVA.org:liu-181901DiVA, id: diva2:1622053
Note
Funding Agencies|National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [22075113, 22178152]; Joint Research Fund for Overseas Natural Science of ChinaNational Natural Science Foundation of China (NSFC) [22138011]; Jiangsu Fund for Distinguished Young Scientists [BK20190045]; Natural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu Province [BK20190981]; High-tech Research Key laboratory of Zhenjiang [SS2018002]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2019M661765]; Jiangsu Provincial Agricultural Science and Technology Independent Innovation Fund [CX (20) 3081]; Jiangsu Government Scholarship for Overseas Studies [JS-2020-203]; Jiangsu University Study-abroad Scholarship for oversea study [UJS-2020-001]; Priority Academic Program Development of Jiangsu Higher Education Institutions; High-Performance Computing Platform of Jiangsu University
2021-12-212021-12-212021-12-21