傅里叶变换红外光谱
电介质
吸附
电容感应
化学工程
化学
材料科学
分析化学(期刊)
光电子学
物理化学
色谱法
计算机科学
操作系统
工程类
作者
Ina Strauß,Kristina Chakarova,Alexander Mundstock,Mihail Mihaylov,Konstantin Hadjiivanov,Natalija Guschanski,Jürgen Caro
标识
DOI:10.1016/j.micromeso.2020.110227
摘要
Nano-scaled UiO-66 and UiO-66-NH2 crystals are synthesized via a solvothermal procedure and investigated regarding their applicability in CO2 sensing devices. The interaction between CO2 and UiO-66 as well as UiO-66-NH2 is studied via FTIR and dielectric measurements with a home-made sensing-cell contraption. The affinity towards low CO2 concentrations is proved by FTIR measurements with 20 ppm CO2. We show, that the co-existence of water leads to an even higher CO2 adsorption compared to the absence of water. Both UiO-MOFs show a good response towards low CO2 concentrations, but UiO-66-NH2 is far more sensitive than UiO-66. In dielectric studies, the affinity of UiO-66 and UiO-66-NH2 towards CO2 results in a strong decrease of the capacity at low frequencies. While UiO-66-NH2 seems to be suited for sensing devices within a CO2 concentration range from 1 up to 100%, UiO-66 seems not be suitable for capacitive CO2 sensing.
科研通智能强力驱动
Strongly Powered by AbleSci AI