Synthesis of porous Cu2O/CuO cages using Cu-based metal-organic frameworks as templates and their gas-sensing properties
Synthesis of porous Cu2O/CuO cages using Cu-based metal-organic frameworks as templates and their gas-sensing properties
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以铜基金属有机骨架为模板的多孔Cu2O/CuO笼的合成及其气敏性能
DOI：
10.1039/c5ta01108f
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发表时间：
2015-01-01
影响因子：
11.9
通讯作者：
Zheng, Lansun
中科院分区：
文献类型：
--
作者：
Wang, Yiting;Lu, Yinyun;Zheng, Lansun
形状可控的多孔中空金属氧化物笼由于其广泛的应用而受到越来越多的关注。本文通过以铜基金属有机骨架（Cu-MOF）多面体晶体为自牺牲模板，在300℃下热分解，成功制备了八面体、截顶八面体和立方Cu2O/CuO笼。在溶剂热条件下，使用月桂酸作为生长调节剂，很好地调节了Cu-MOF多面体前驱体的形貌。气敏测量表明，八面体Cu2O/CuO笼的气敏性能远优于截角八面体和立方笼，这归因于八面体Cu2O/CuO笼的大比表面积(150.3 m(2) g(-1))和高表面吸附氧容量的协同作用。
Shape-controllable porous, hollow metal oxide cages are attracting more and more attention due to their widespread applications. In this paper, octahedral, truncated octahedral and cubic Cu2O/CuO cages were successfully fabricated by the thermal decomposition of the polyhedral crystals of Cu-based metal-organic frameworks (Cu-MOFs) as self-sacrificial templates at 300 degrees C. The morphology of the Cu-MOF polyhedral precursors was well tuned by using lauric acid as the growth modulator under solvothermal conditions. Gas-sensing measurements revealed that the octahedral Cu2O/CuO cages exhibited a gas-sensing performance far better than those exhibited by truncated octahedral and cubic cages, which is attributed to the cooperative effect of the large specific surface area (150.3 m(2) g(-1)) and high capacity of surface-adsorbed oxygen of the octahedral Cu2O/CuO cages.