Tuning of ZIF-Derived Carbon with High Activity, Nitrogen Functionality, and Yield - A Case for Superior CO2 Capture.
Tuning of ZIF-Derived Carbon with High Activity, Nitrogen Functionality, and Yield - A Case for Superior CO2 Capture.
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DOI：
10.1002/cssc.201403402
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发表时间：
2015-06-22
期刊：
影响因子：
8.4
通讯作者：
Guo ZX
中科院分区：
文献类型：
--
作者：
Gadipelli S;Guo ZX
开发了一条高效、简便的合成路线，以ZIF-8为原料制备金属修饰和氮官能化微孔碳材料。金属和吡咯氮诱导的循环二氧化碳吸收能力和结合能得到了明显的增强，特别是在碳化温度700 °C远低于经常报道的(1000 °C)的情况下。高温碳化可以提高孔隙率，但代价是样品产率、金属和N官能位的大量损失。这一发现与以前报道的金属有机骨架(MOF)中的碳进行了对比讨论。此外，MOF衍生碳的孔隙率严重依赖于前驱体MOF的结构和晶体生长。目前的策略为高产率和低能耗地创建和调整高活性和官能化的碳结构提供了一条新的有效途径。
A highly effective and facile synthesis route is developed to create and tailor metal-decorated and nitrogen-functionalized active microporous carbon materials from ZIF-8. Clear metal- and pyrrolic-N-induced enhancements of the cyclic CO2 uptake capacities and binding energies are achieved, particularly at a much lower carbonization temperature of 700 °C than those often reported (1000 °C). The high-temperature carbonization can enhance the porosity but only at the expense of considerable losses of sample yield and metal and N functional sites. The findings are comparatively discussed with carbons derived from metal–organic frameworks (MOFs) reported previously. Furthermore, the porosity of the MOF-derived carbon is critically dependent on the structure of the precursor MOF and the crystal growth. The current strategy offers a new and effective route for the creation and tuning of highly active and functionalized carbon structures in high yields and with low energy consumption.