期刊
SMALL
卷 13, 期 44, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201701857
关键词
2D; boron nitride; catalytic oxidation; defective; N-terminated
类别
资金
- National Natural Science Foundation of China [21576122, 21376111, 21506083]
- Postgraduate Innovation Project of Jiangsu Province [KYLX15_1067]
- China Scholarship Council
- ORNL's Center for Nanophase Materials Sciences - Scientific User Facilities Division of U.S. Department of Energy
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
- National Science Foundation [ACI-1053575, DMR160118]
- Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, DOE
Tailoring terminated edge of hexagonal boron nitride (h-BN) for enhancing catalysis has turned to be an imperative for the rational design of a highly active aerobic catalyst. Herein, a tailoring N-terminated porous BN (P-BN) strategy is reported with a zinc (Zn) salt as a dual-functional template. The Zn salt acts as both an in situ template and an N-terminated defective edges directing agent. The zinc salt template turns to Zn nanoparticles (Zn NPs) and functions as physical spacers, which are subsequently removed at a higher temperature, for producing P-BN, whose high surface area is high to 1579 m(2) g(-1). Moreover, because of the lower electronegativity of Zn, boron (B) atoms are partly replaced by Zn atoms and ultimately preferred to N-terminated edges with the volatilization of Zn NPs. Owing to the moderate dissociative energy of oxygen atoms on N-terminated edges, the N-terminated edges are proved to be the origin of an enhanced aerobic catalytic activity by density functional theory (DFT) calculations. Moreover, the DFT calculation result is experimentally verified.
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