https://scholars.lib.ntu.edu.tw/handle/123456789/598870
標題: | Effect of Atmospheric-Pressure Helium Plasma-Jet Treatment on Electrocatalysis of CO2Reduction Reaction using Nanoporous Copper Films | 作者: | Zeng W.-Y Tsai J.-H Cheng I.-C. I-Chung Cheng |
關鍵字: | Atmospheric pressure;Catalyst selectivity;Contact angle;Electrocatalysts;Global warming;Helium;Hydrophilicity;Plasma jets;Available energy;Available fuels;Clean fuel;CO 2 reduction;CO2 reduction;Copper films;Fuel source;Helium plasmas;Nano-porous coppers;Reduction reaction;Carbon dioxide | 公開日期: | 2021 | 卷: | 168 | 期: | 9 | 來源出版物: | Journal of the Electrochemical Society | 摘要: | The conversion of carbon dioxide (CO2) to various clean and available fuels or energy sources is considered a promising path to alleviate global warming and energy issues. However, this reaction requires an efficient electrocatalyst with high selectivity. In this study, a nanoporous copper (NPC) film with a ligament size of 35 ± 6 nm was used as an electrocatalyst for CO2 reduction. The current density of the CO2 reduction reaction and the Faradaic efficiency (FE) of HCOOH are doubled with the use of NPC as an electrocatalyst compared to that of copper (Cu) foils. The helium (He) plasma-jet treatment on NPC film catalysts can further enhance the CO2 reduction reaction rate and the selectivity of HCOOH. XPS results reveal that He plasma-jet treatment of the NPC film can change the surface activity of Cu in terms of the oxide content and hydrophilic groups. In addition, the hydrophilicity of the NPC film is confirmed through water contact angle tests; it decreases from 133.64° to 21.57° after He plasma-jet treatment. He plasma-jet treatment brings about the decomposition of Cu-O and the presence of O-C=O functional groups which facilitate the reduction of CO2 to HCOOH. ? 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116365879&doi=10.1149%2f1945-7111%2fac239a&partnerID=40&md5=095bd3140d3f8b7885f1938d8996e842 https://scholars.lib.ntu.edu.tw/handle/123456789/598870 |
ISSN: | 00134651 | DOI: | 10.1149/1945-7111/ac239a |
顯示於: | 機械工程學系 |
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