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Enhanced Exfoliation Effect of Solid Auxiliary Agent On the Synthesis of Biofunctionalized MoS 2 Using Grindstone Chemistry
Author(s) -
Wang Jing,
Zhang Wentao,
Wang Yanru,
Zhu Wenxin,
Zhang Daohong,
Li Zhonghong,
Wang Jianlong
Publication year - 2016
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201600114
Subject(s) - exfoliation joint , adsorption , fabrication , chemistry , chitosan , yield (engineering) , nanotechnology , chemical engineering , materials science , graphene , organic chemistry , composite material , engineering , medicine , alternative medicine , pathology
Mass production and commercial availability are prerequisites for the viability and wide application of MoS 2 . Here, we demonstrate enhanced grindstone chemistry for a one‐step synthesis of biofunctionalized MoS 2 . By adding a SiO 2 auxiliary agent the exfoliation efficiency increases from 16.23% to 58.59% and a rapid and high‐yield exfoliation of MoS 2 is seen. SiO 2 exhibits a fragmentation effect, which reduces the lateral size and facilitates the exfoliation of MoS 2 , thus inducing a high‐efficient paradigm in the top‐down fabrication of biofunctionalized MoS 2 nanosheets. The as‐prepared MoS 2 ‐chitosan (MoS 2 ‐CS) nanosheets display complete disaggregation and homogeneous dispersion, as well as a high content of chitosan (ca. 20 wt%). As a proof‐of‐concept application, the MoS 2 ‐CS nanosheets act as a biosorbent for Pb II removal, exhibiting a good adsorption capacity and recyclability. This green and facile enhanced grindstone chemistry with minimal use of organic solvents and high‐throughput efficiency can be extended to the fabrication of other biocompatible inorganic 2D analogues for a variety of applications.