Journal
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
Volume 33, Issue 11, Pages 825-832Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppsc.201600114
Keywords
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Funding
- New Century Excellent Talents in University [NCET-13-0483]
- National Natural Science Foundation of China [31371813, 31201357]
- Open Fund of State Key Laboratory of Electroanalytical Chemistry [SKLEAC201301]
- Shaanxi Provincial Research Fund [2014KJXX-42, 2014K02-13-03, 2014K13-10]
- Yangling district research fund [2014NY-35]
- Fundamental Research Funds for the Northwest A&F University of China [2014YB093, 2452015257]
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Mass production and commercial availability are prerequisites for the viability and wide application of MoS2. Here, we demonstrate enhanced grindstone chemistry for a one-step synthesis of biofunctionalized MoS2. By adding a SiO2 auxiliary agent the exfoliation efficiency increases from 16.23% to 58.59% and a rapid and high-yield exfoliation of MoS2 is seen. SiO2 exhibits a fragmentation effect, which reduces the lateral size and facilitates the exfoliation of MoS2, thus inducing a high-efficient paradigm in the top-down fabrication of biofunctionalized MoS2 nanosheets. The as-prepared MoS2-chitosan (MoS2-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 MoS2-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.
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