Primo Ana, Navalón Sergio, Asiri Abdullah M, García Hermenegildo
Instituto de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Av. de los Naranjos s/n, 46022 Valencia (Spain).
Chemistry. 2015 Jan 2;21(1):324-30. doi: 10.1002/chem.201405469. Epub 2014 Nov 5.
A novel procedure for the preparation of few-layers boron nitride (BN), either as films or as suspended BN platelets, is presented, based on the pyrolysis of chitosan, which serves both as a matrix to embed ammonium borate and as a template for BN synthesis. The resulting BN samples are characterized by XRD, Raman and X-ray photoelectron spectroscopy, and by TEM and AFM imaging. The samples exhibit deep UV emission, which is characteristic of high quality BN. This template synthesis and the easy exfoliation of BN platelets facilitate the use of BN as an extremely high-efficiency Fenton catalyst for the generation of highly aggressive hydroxyl radicals in water.
本文介绍了一种制备几层氮化硼（BN）的新方法，该方法可制备薄膜状或悬浮的BN薄片，其基于壳聚糖的热解，壳聚糖既作为嵌入硼酸铵的基质，又作为BN合成的模板。所得的BN样品通过X射线衍射（XRD）、拉曼光谱和X射线光电子能谱以及透射电子显微镜（TEM）和原子力显微镜（AFM）成像进行表征。样品表现出深紫外发射，这是高质量BN的特征。这种模板合成以及BN薄片的易于剥离有助于将BN用作一种极高效率的芬顿催化剂，用于在水中生成极具活性的羟基自由基。
