Porous boron nitride with a high surface area: hydrogen storage and water treatment
Porous boron nitride with a high surface area: hydrogen storage and water treatment
复制标题
高表面积多孔氮化硼：储氢和水处理
DOI：
10.1088/0957-4484/24/15/155603
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发表时间：
2013-04-19
期刊：
影响因子：
3.5
通讯作者：
Tang, Chengchun
中科院分区：
文献类型：
--
作者：
Li, Jie;Lin, Jing;Tang, Chengchun
我们报道了通过一种简单的两步法合成高质量的微孔/介孔BN材料。合成的BN多孔晶须具有1687 m2·g-1的高比表面积和0.99cm-3·g-1的大孔容。多孔结构的形成归因于BN前体，三聚氰胺二硼酸盐分子晶体中的有机物种的基团消除。这种消除方法保持了有序的孔结构和大量的结构缺陷。BN晶须的高比表面积、孔体积和结构缺陷使其非常适合于储氢和废水处理应用。我们展示了优异的吸氢能力的BN晶须与高重量吸附高达5.6%，在室温下，在相对较低的压力为3 MPa。此外，BN晶须对甲基橙子和铜离子也表现出优异的吸附能力，在298 K时的最大吸附容量分别为298.3和373 mg g（-1）。
We report on the synthesis of high-quality microporous/mesoporous BN material via a facile two-step approach. An extremely high surface area of 1687 m(2) g(-1) and a large pore volume of 0.99 cm(3) g(-1) have been observed in the synthesized BN porous whiskers. The formation of the porous structure was attributed to the group elimination of organic species in a BN precursor, melamine diborate molecular crystal. This elimination method maintained the ordered pore structure and numerous structural defects. The features including high surface area, pore volume and structural defects make the BN whiskers highly suitable for hydrogen storage and wastewater treatment applications. We demonstrate excellent hydrogen uptake capacity of the BN whiskers with high weight adsorption up to 5.6% at room temperature and at the relatively low pressure of 3 MPa. Furthermore, the BN whiskers also exhibit excellent adsorption capacity of methyl orange and copper ions, with the maximum removal capacity of 298.3 and 373 mg g(-1) at 298 K, respectively.