Synergizing Electron and Heat Flows in Photocatalyst for Direct Conversion of Captured CO 2 .

Autor: Choi C; Department of Chemistry, Yale University, New Haven, CT 06511, USA.; Energy Sciences Institute, Yale University, West Haven, CT 06516, USA., Zhao F; Department of Chemistry, Emory University, Atlanta, GA 30322, USA., Hart JL; Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA., Gao Y; Department of Chemistry, Yale University, New Haven, CT 06511, USA.; Energy Sciences Institute, Yale University, West Haven, CT 06516, USA., Menges F; Department of Chemistry, Yale University, New Haven, CT 06511, USA., Rooney CL; Department of Chemistry, Yale University, New Haven, CT 06511, USA.; Energy Sciences Institute, Yale University, West Haven, CT 06516, USA., Harmon NJ; Department of Chemistry, Yale University, New Haven, CT 06511, USA.; Energy Sciences Institute, Yale University, West Haven, CT 06516, USA., Shang B; Department of Chemistry, Yale University, New Haven, CT 06511, USA.; Energy Sciences Institute, Yale University, West Haven, CT 06516, USA., Xu Z; Department of Chemistry, Emory University, Atlanta, GA 30322, USA., Suo S; Department of Chemistry, Emory University, Atlanta, GA 30322, USA., Sam Q; Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA., Cha JJ; Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA., Lian T; Department of Chemistry, Emory University, Atlanta, GA 30322, USA., Wang H; Department of Chemistry, Yale University, New Haven, CT 06511, USA.; Energy Sciences Institute, Yale University, West Haven, CT 06516, USA.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2023 Jun 05; Vol. 62 (23), pp. e202302152. Date of Electronic Publication: 2023 Apr 26.
DOI: 10.1002/anie.202302152
Abstrakt: We report a ternary hybrid photocatalyst architecture with tailored interfaces that boost the utilization of solar energy for photochemical CO 2 reduction by synergizing electron and heat flows in the photocatalyst. The photocatalyst comprises cobalt phthalocyanine (CoPc) molecules assembled on multiwalled carbon nanotubes (CNTs) that are decorated with nearly monodispersed cadmium sulfide quantum dots (CdS QDs). The CdS QDs absorb visible light and generate electron-hole pairs. The CNTs rapidly transfer the photogenerated electrons from CdS to CoPc. The CoPc molecules then selectively reduce CO 2 to CO. The interfacial dynamics and catalytic behavior are clearly revealed by time-resolved and in situ vibrational spectroscopies. In addition to serving as electron highways, the black body property of the CNT component can create local photothermal heating to activate amine-captured CO 2 , namely carbamates, for direct photochemical conversion without additional energy input.
(© 2023 Wiley-VCH GmbH.)
Databáze: MEDLINE
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