Effects of Substrate and Polymer Encapsulation on CO₂ Electroreduction by Immobilized Indium(III) Protoporphyrin

Effects of Substrate and Polymer Encapsulation on CO₂ Electroreduction by Immobilized Indium(III) Protoporphyrin

Birdja, Yuvraj Y. (Universiteit Leiden)
Vos, Rafaël E. (Universiteit Leiden)
Wezendonk, T.A. (TU Delft ChemE/Catalysis Engineering)
Jiang, Lin (Universiteit Leiden)
Kapteijn, F. (TU Delft ChemE/Catalysis Engineering)
Koper, M.T.M. (Universiteit Leiden)

2018

Heterogenization of molecular catalysts for CO₂ electroreduction has attracted significant research activity, due to the combined advantages of homogeneous and heterogeneous catalysts. In this work, we demonstrate the strong influence of the nature of the substrate on the selectivity and reactivity of electrocatalytic CO₂ reduction, as well as on the stability of the studied immobilized indium(III) protoporphyrin IX, for electrosynthesis of formic acid. Additionally, we investigate strategies to improve the CO₂ reduction by tuning the chemical functionality of the substrate surface by means of electrochemical and plasma treatment and by catalyst encapsulation in polymer membranes. We point out several underlying factors that affect the performance of electrocatalytic CO₂ reduction. The insights gained here allow one to optimize heterogenized molecular systems for enhanced CO₂ electroreduction without modification of the catalyst itself.

activity
CO electroreduction
immobilization
polymer encapsulation
pretreatment effect
selectivity
stability
substrate effect

http://resolver.tudelft.nl/uuid:1d12467a-aae9-4a64-bec1-7e21aa58d642

https://doi.org/10.1021/acscatal.7b03386

2155-5435

ACS Catalysis, 8 (5), 4420-4428

Institutional Repository

journal article

© 2018 Yuvraj Y. Birdja, Rafaël E. Vos, T.A. Wezendonk, Lin Jiang, F. Kapteijn, M.T.M. Koper