508
Home
Dr.Wu
Research
Member
Publications
News
Contact
Publications
 
All
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2007
2006
   
Crystallographic Tailoring of Graphene by Nonmetal Siox Nanoparticles
Posted:2016-03-18 15:01    Column:2009

L. Gao, W. Ren*, B. Liu, Z.-S. Wu, C. Jiang, H.-M. Cheng*, 
Journal of the American Chemical Society 2009, 131 (39): 13934-13936.  
DOI:10.1021/ja906610e  [PDF] 


Abstract:

 In this communication, we demonstrate nonmetal SiOx nanoparticles (NPs) can tailor few-layer graphenes (FLGs) into graphene nanoribbons (GNRs) and regular pieces with smooth edges. The tailoring of graphene is realized by the movements of SiOx NPs along the graphene lattice in the atmosphere of H2, and the tailored trenches exhibit high selectivity of the crystallographic orientation compared to the reported metal NPs. The low tailoring rate and the long lifetime provide great potential for accurate control of the trench length or the length of the tailored GNRs. As a result, smooth GNRs with a length of several micrometers and a width narrower than 10 nm are obtained. A catalytic hydrogenation mechanism is proposed for the tailoring of graphene by SiOx NPs. These findings open up the possibility for atomically precise graphene device fabrication without metal contamination and indicate the potential catalytic activity of nonmetal NPs for the hydrogenation of carbon materials.
Dalian Institute of Chemical Physics, CAS
457 Zhongshan Road Dalian, China 116023
E-mail: wuzs@dicp.ac.cn

Copyright © 2D Materials Chemistry & Energy Applications Group. All Rights Reserved.

Home / Dr.Wu / Research / Member / Publications / News / Contact