Park Jinkyoung, Park Jeoung Ryul, Choe Jong Hyeak, Kim Saemi, Kang Minjung, Kang Dong Won, Kim Jee Yeon, Jeong Yong Won, Hong Chang Seop
Department of Chemistry, Korea University, Seoul 02841, Republic of Korea.
Samsung Research, SEC 33, Seongchon-gil, Seocho-gu, Seoul 06765, Republic of Korea.
ACS Appl Mater Interfaces. 2020 Nov 11;12(45):50534-50540. doi: 10.1021/acsami.0c16224. Epub 2020 Oct 31.
Control of indoor CO concentration to a safe level is important to human health. Metal-organic-framework-based adsorbents show superior adsorption performance at moderate CO concentration compared to other solid adsorbents but suffer from low capacities and high regeneration temperature at indoor CO concentrations and poor humidity stability. Herein, we report epn-grafted Mg(dobpdc) (epn = 1-ethylpropane-1,3-diamine) showing a CO capacity of 12.2 wt % at an acceptable concentration of 1000 ppm and a practically low desorption temperature of 70 °C, which surpasses the performance of conventional solid adsorbents under the given conditions. After poly(dimethylsiloxane) coating, this material reveals a significant adsorption amount (∼10 wt %) in humid conditions (up to 98% relative humidity) with structural durability.
将室内一氧化碳（CO）浓度控制在安全水平对人类健康至关重要。与其他固体吸附剂相比，基于金属有机框架的吸附剂在中等CO浓度下表现出卓越的吸附性能，但在室内CO浓度下存在容量低、再生温度高以及湿度稳定性差的问题。在此，我们报道了接枝1-乙基丙烷-1,3-二胺（epn）的Mg(dobpdc)，在1000 ppm的可接受浓度下，其CO容量为12.2 wt%，脱附温度低至70 °C，在给定条件下超过了传统固体吸附剂的性能。经过聚二甲基硅氧烷涂层处理后，这种材料在潮湿条件下（相对湿度高达98%）仍具有显著的吸附量（约10 wt%）且结构稳定。
