Nanosized Cu-MOFs induced by graphene oxide and enhanced gas storage capacity
Nanosized Cu-MOFs induced by graphene oxide and enhanced gas storage capacity
复制标题
氧化石墨烯诱导的纳米Cu-MOFs和增强的气体储存能力
DOI：
10.1039/c3ee23421e
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发表时间：
2013-03-01
影响因子：
32.5
通讯作者：
Schick, Christoph
中科院分区：
文献类型：
--
作者：
Liu, Shuang;Sun, Lixian;Schick, Christoph
最近已经开发了具有定制的纳米孔隙率的各种MOF作为CO2和H2的潜在存储介质。采用不同比例的氧化石墨烯（GO）制备了基于Cu-BTC和石墨烯层的复合材料。通过表征分析和气体吸附实验发现，GO的引入使Cu-BTC纳米化，分散性好，大大提高了复合材料的二氧化碳捕集和储氢性能。所获得的材料表现出约30%的CO2和H2存储容量增加（在273 K和1 atm下对于CO2从6.39 mmol g − 1的Cu-BTC增加到8.26 mmol g−1的CG-9;在77 K和42 atm下对于H2从2.81 wt%的Cu-BTC增加到3.58 wt%的CG-9）。最后根据单组分气体吸附实验数据计算了CO2/CH 4和CO2/N2选择性。
Various MOFs with tailored nanoporosities have recently been developed as potential storage media for CO2 and H2. The composites based on Cu-BTC and graphene layers were prepared with different percentages of graphene oxide (GO). Through the characterization analyses and gas adsorption experiments, we found that the nanosized and well-dispersed Cu-BTC induced by the incorporation of GO greatly improved the carbon dioxide capture and hydrogen storage performance of the composites. The materials obtained exhibited about a 30% increase in CO2 and H2 storage capacity (from 6.39 mmol g−1 of Cu-BTC to 8.26 mmol g−1 of CG-9 at 273 K and 1 atm for CO2; from 2.81 wt% of Cu-BTC to 3.58 wt% of CG-9 at 77 K and 42 atm for H2). Finally, the CO2/CH4 and CO2/N2 selectivities were calculated according to single-component gas sorption experiment data.