About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Self-organizing Nano-architectured Materials
|
Presentation Title |
Synthesis and Catalytical Properties of Nanoporous Copper Silver Films via Magnetron Co-sputtering |
Author(s) |
I-Chung Cheng, Yu-Shuo Lee, Jia-Hao Lai |
On-Site Speaker (Planned) |
I-Chung Cheng |
Abstract Scope |
Nanoporous copper silver films with the average ligament size ranging from 15 to 33 nm were synthesized via magnetron co-sputtering and subsequent dealloying process. The CuAgAl precursor alloy films were selective dealloyed in 0.5M NaOH for 15 minutes. The migration of Cu and Ag nanocrystals in nanoporous structure was observed with HRTEM images. The catalytic performance of nanoporous copper silver films was determined by electrostatic double-layer capacitance and current density during CO2 reduction reaction, while the conversion products were evaluated by GC, HPLC, and NMR. The results showed that methane, ethene and ethanol, which has 6-8 electrons transfer were obtained from CO2 reduction reaction with the use of nanoporous Cu-Ag as electrocatalysts, while the faradic efficiency of hydrogen was 22%. |
Proceedings Inclusion? |
Undecided |
Keywords |
Nanotechnology, Copper / Nickel / Cobalt, Thin Films and Interfaces |