Bae Jae Young
Department of Chemistry, Keimyung University, Daegu 42601, Republic of Korea.
J Nanosci Nanotechnol. 2018 Sep 1;18(9):6101-6105. doi: 10.1166/jnn.2018.15615.
Adsorbents that can effectively trap CO2 gas are actively being studied due to worldwide increases in CO2 emissions. Although activated carbon is a leading adsorbent because of advantages such as low costs and a wide specific surface area, it is limited in the sense that it does not adsorb CO2 alone. Therefore, in this study, the adsorption characteristics of CO2 were analyzed by loading KOH and/or Ba(OH)2 on activated carbon at room temperature. Loaded KOH and/or Ba(OH)2 were identified by SEM-EDX and BET analysis, respectively, and the CO2 adsorption performances were confirmed using a gas flow system with GC. We confirmed that the CO2 adsorption performance was significantly improved when activated carbon was pretreated with KOH and Ba(OH)2, respectively. It can be seen from the XPS analysis that, when both KOH and Ba(OH)2 were loaded on the same activated carbon, it had a synergy effect on CO2 adsorption performance.
由于全球二氧化碳排放量的增加，能够有效捕获二氧化碳气体的吸附剂正在积极研究中。尽管活性炭因其成本低、比表面积大等优点而成为主要吸附剂，但它不能单独吸附二氧化碳。因此，在本研究中，通过在室温下将氢氧化钾和/或氢氧化钡负载到活性炭上来分析二氧化碳的吸附特性。分别通过扫描电子显微镜-能谱仪（SEM-EDX）和比表面积分析仪（BET）分析负载的氢氧化钾和/或氢氧化钡，并使用配有气相色谱仪（GC）的气流系统确认二氧化碳的吸附性能。我们证实，当活性炭分别用氢氧化钾和氢氧化钡预处理时，二氧化碳的吸附性能显著提高。从X射线光电子能谱（XPS）分析可以看出，当氢氧化钾和氢氧化钡都负载在同一活性炭上时，对二氧化碳吸附性能具有协同效应。
