Versatile NiO/mesoporous carbon nanodisks: controlled synthesis from hexagon shaped heterobimetallic metal-organic frameworks
Versatile NiO/mesoporous carbon nanodisks: controlled synthesis from hexagon shaped heterobimetallic metal-organic frameworks
复制标题
多功能NiO/介孔碳纳米盘：六边形异双金属金属有机框架的受控合成
作者：
Zeng Dehong;Yang Ying;Yang Feng;Guo Fangmin;Yang Senjie;Liu Baijun;Hao Shijie;Ren Yang
通过构建均苯三甲酸镍锌杂多金属有机骨架（HMOF）盘，在910 °C热裂解前，方便可控地合成了受阻NiO/介孔碳纳米盘（NiO/MCN）。在HMOF合成过程中调整Ni/（Zn + Ni）进料比和反应时间产生了具有适当填充的NiO纳米晶体的良好限定的六边形碳纳米盘，同时保持高孔隙率和导电性。这种精心制造的NiO/MCN是高度稳定的，并且在电容测试和4-硝基苯酚还原期间分别表现出任何复合纳米盘的最大比电容261 F g-1和最高比活度因子1.93 s-1 g-1。
Hexagonal NiO/mesoporous carbon nanodisks (NiO/MCN) are facilely and controllably synthesized via constructing nickel–zinc trimesic acid heterobimetallic metal–organic framework (HMOF) disks before pyrolysis at 910 °C. Tailoring the Ni/(Zn + Ni) feed ratio and the reaction time during the HMOF synthesis creates a well-defined hexagonal carbon nanodisk with properly populated NiO nanocrystals while maintaining high porosity and conductivity. Such an elaborately fabricated NiO/MCN is highly stable, and exhibits the largest specific capacitance of 261 F g−1 and the highest specific activity factor of 1.93 s−1 g−1 of any composite nanodisk during the capacitive test and 4-nitrophenol reduction, respectively.