Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/158217
Title: Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction
Authors: Lim, Carina Yi Jing
Keywords: Engineering::Materials
Issue Date: 2022
Publisher: Nanyang Technological University
Source: Lim, C. Y. J. (2022). Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/158217
Abstract: Selective electrochemical carbon dioxide reduction (CO2RR) to multi-carbon (C2+) products is an attractive method to close the carbon cycle as well as to provide a long-term, large-scale energy storage solution. With copper catalysts, since C2+ product formation is in direct competition with the formation of single-carbon products and hydrogen evolution, methods to modulate the product selectivity are highly desirable. In addition, surface charging effects are not commonly considered in CO2RR experiments. Functionalized cuprous oxide-derived copper synthesized via a simple wet chemistry approach was tested in a H-cell set-up and their surface properties were then studied with electrochemical impedance spectroscopy (EIS) and pulsed voltammetry (PV). Selectivity and turnover were observed to improve with imidazole functionalization, with exceptionally high C2+ selectivity and wide C2+-selectivity potential widow with histidine-functionalized catalysts. In addition, strong correlations of parameters describing surface charging effects obtained from EIS and PV highlight its importance in influencing C2+ selectivity. The strong correlation between EIS and PV parameters with C2+ selectivity also suggests the potential of these experiments to be exploited for high-throughput catalyst discovery in the future.
URI: https://hdl.handle.net/10356/158217
Fulltext Permission: embargo_restricted_20240531
Fulltext Availability: With Fulltext
Appears in Collections:MSE Student Reports (FYP/IA/PA/PI)

Files in This Item:
File Description SizeFormat 
FYP for Submission.pdf
  Until 2024-05-31
4.18 MBAdobe PDFUnder embargo until May 31, 2024

Page view(s)

17
Updated on Jun 26, 2022

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.