Institute for Frontier Materials, Deakin University, Locked Bag 2000, Geelong, Victoria 3220, Australia.
Nanoscale. 2018 Jun 14;10(23):10979-10985. doi: 10.1039/c8nr02074d.
3D functionalized flower-like boron nitride nanosheets (FBNNSs) were synthesized by a novel template-free method involving "cylinder compressing". Due to the high surface area (1114 m2 g-1), pore volume (0.7 cm3 g-1), hierarchical pore distributions, and abundant edge groups (-OH and -NH2), the 3D functionalized FBNNSs displayed excellent NH3 and CO2 adsorption up to 91 mg g-1 and 37.9 cc g-1 (74.4 mg g-1) at 1 bar, respectively. Moreover, the reusable performance of the material for gas adsorption was maintained for 10 cycles, indicating the stable structure of the FBNNSs. In addition, the adsorption mechanism was mainly explained by Lewis acid/base interactions, weak van der Waals interactions, and H-bonds. The combination of the enhanced adsorption capacity, excellent regenerability, and extraordinary chemical and thermal stability means that 3D FBNNSs possess huge potential for implementation in practical NH3 and CO2 capture.
3D 功能化花状氮化硼纳米片（FBNNSs）通过一种新颖的无模板方法合成，涉及“圆柱压缩”。由于具有高比表面积（1114 m2 g-1）、孔体积（0.7 cm3 g-1）、分级孔分布和丰富的边缘基团（-OH 和 -NH2），3D 功能化 FBNNSs 对 NH3 和 CO2 的吸附性能优异，在 1 bar 时分别达到 91 mg g-1 和 37.9 cc g-1（74.4 mg g-1）。此外，该材料对气体吸附的可重复使用性能在 10 个循环内保持不变，表明 FBNNSs 的结构稳定。此外，吸附机理主要通过路易斯酸碱相互作用、弱范德华相互作用和氢键来解释。增强的吸附能力、出色的可再生性以及非凡的化学和热稳定性相结合，意味着 3D FBNNSs 在实际的 NH3 和 CO2 捕集方面具有巨大的应用潜力。
