Liu Zhen, Liu Jingquan, Mateti Srikanth, Zhang Chunmei, Zhang Yingxin, Chen Lifen, Wang Jianmei, Wang Hongbin, Doeven Egan H, Francis Paul S, Barrow Colin J, Du Aijun, Chen Ying, Yang Wenrong
College of Materials Science and Engineering , Qingdao University , Qingdao 266071 , China.
School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology , Brisbane , QLD 4001 , Australia.
ACS Nano. 2019 Feb 26;13(2):1394-1402. doi: 10.1021/acsnano.8b06978. Epub 2019 Jan 23.
Atomically thin boron nitride (BN) nanosheets were generally considered to be chemically inert until the recent discovery of the surprising catalysis. However, the origin of this unusual catalytic activity remains unclear. We have observed the free boron radicals at the edges and defective sites of BN nanosheets and demonstrated with both experimental and theoretical approaches that the boron radicals in the nanosheets can catalyze the chromogenic reaction of 3,5,3',5'-tetramethylbenzidine and serve as a source of reactive radicals for the co-reactant electrogenerated chemiluminescence of tris(2,2'-bipyridine)ruthenium(2+). These findings suggest BN nanosheets as a type of nonmetal catalyst.
原子级薄的氮化硼（BN）纳米片在最近发现其惊人的催化作用之前，通常被认为是化学惰性的。然而，这种异常催化活性的起源仍不清楚。我们在BN纳米片的边缘和缺陷部位观察到了游离硼自由基，并通过实验和理论方法证明，纳米片中的硼自由基可以催化3,5,3',5'-四甲基联苯胺的显色反应，并作为三（2,2'-联吡啶）钌（2+）共反应物电致化学发光的活性自由基来源。这些发现表明BN纳米片是一种非金属催化剂。
