1. Tuning Gold Nanoparticles with Chelating Ligands for Highly Efficient Electrocatalytic CO2 Reduction.
- Author
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Cao, Zhi, Zacate, Samson B., Sun, Xiaodong, Liu, Jinjia, Hale, Elizabeth M., Carson, William P., Tyndall, Sam B., Xu, Jun, Liu, Xingwu, Liu, Xingchen, Song, Chang, Luo, Jheng‐hua, Cheng, Mu‐Jeng, Wen, Xiaodong, and Liu, Wei
- Subjects
ELECTROCHEMICAL analysis ,GOLD nanoparticles ,FARADAIC current ,CATALYTIC activity ,ACYLATION - Abstract
Abstract: Capped chelating organic molecules are presented as a design principle for tuning heterogeneous nanoparticles for electrochemical catalysis. Gold nanoparticles (AuNPs) functionalized with a chelating tetradentate porphyrin ligand show a 110‐fold enhancement compared to the oleylamine‐coated AuNP in current density for electrochemical reduction of CO
2 to CO in water at an overpotential of 340 mV with Faradaic efficiencies (FEs) of 93 %. These catalysts also show excellent stability without deactivation (<5 % productivity loss) within 72 hours of electrolysis. DFT calculation results further confirm the chelation effect in stabilizing molecule/NP interface and tailoring catalytic activity. This general approach is thus anticipated to be complementary to current NP catalyst design approaches. [ABSTRACT FROM AUTHOR]- Published
- 2018
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