Elucidating the reactivity and nature of active sites for tin phthalocyanine during CO2 reduction

Subrato Acharjya, Jiacheng Chen, Minghui Zhu and Chong Peng

Greenhouse Gases: Science and Technology, 2021, vol. 11, issue 6, 1191-1197

Abstract: Immobilized tin phthalocyanine dichloride (SnPcCl2) was prepared by refluxing SnPcCl2 and hydroxyl‐functionalized carbon nanotubes in DMF with the addition of triethylamine, which exhibited minimal aggregation and approximately 2–3 folds improvement in activity towards CO2 electroreduction compared to the physically mixed SnPcCl2/CNT hybrid. Cyclic voltammetry analysis and in situ UV‐vis spectra revealed that metallic tin is the active site for CO2 electroreduction, and the redox behavior of Sn0 is affected by the adjacent demetallized macrocycles. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

Date: 2021
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https://doi.org/10.1002/ghg.2081

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