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Layered double hydroxides/oxidized carbon nanotube nanocomposites for CO2 capture
Junya Wang,Liang Huang,Qianwen Zheng,Yaqian Qiao,Qiang Wang 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.36 No.-
A systematic investigation on the influence of synthesis method and chemical composition of LDH/oxidized carbon nanotube (LDH/OCNT) nanocomposites on their CO2 capture performance wereperformed. Three LDH/OCNT nanocomposites were prepared using two methods: ‘‘electrostatic selfassembly’’and ‘‘direct co-precipitation’’. All LDH/OCNT nanocomposites were thoroughly characterized. The isothermal CO2 adsorption at different temperatures (60–400 8C) and adsorption/desorption cyclingtests were conducted. Both the CO2 adsorption capacity and the multi-cycle stability of LDH derivedadsorbents were improved by the introduction of OCNT. In particular, the absolute CO2 capture capacityof Mg-Al-NO3 LDH was increased by more than twice by adding 9.1 wt% OCNT.