Liquid phase exfoliation and crumpling of inorganic nanosheets

Physical Chemistry Chemical Physics : PCCP
Rozana BariMicah J Green

Abstract

Here we demonstrate through experiment and simulation the polymer-assisted dispersion of inorganic 2D layered nanomaterials such as boron nitride nanosheets (BNNSs), molybdenum disulfide nanosheets (MoS2), and tungsten disulfide nanosheets (WS2), and we show that spray drying can be used to alter such nanosheets into a crumpled morphology. Our data indicate that polyvinylpyrrolidone (PVP) can act as a dispersant for the inorganic 2D layered nanomaterials in water and a range of organic solvents; the effectiveness of our dispersion process was characterized by UV-vis spectroscopy, microscopy and dynamic light scattering. Molecular dynamics simulations confirm that PVP readily physisorbs to BNNS surfaces. Collectively, these results indicate that PVP acts as a general dispersant for nanosheets. Finally, a rapid spray drying technique was utilized to convert these 2D dispersed nanosheets into 3D crumpled nanosheets; this is the first report of 3D crumpled inorganic nanosheets of any kind. Electron microscopy images confirm that the crumpled nanosheets (1-2 μm in diameter) show a distinctive morphology with dimples on the surface as opposed to a wrinkled, compressed surface, which matches earlier simulation results. These results d...Continue Reading

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Citations

Jan 16, 2016·Journal of Colloid and Interface Science·Matthew J HansenMicah J Green
Dec 15, 2015·Physical Chemistry Chemical Physics : PCCP·Gregorio GarcíaSantiago Aparicio
Jun 13, 2015·Physical Chemistry Chemical Physics : PCCP·Xiaoliang ZengChing-Ping Wong
Jul 23, 2016·Angewandte Chemie·Wenshuai ZhuSheng Dai
Oct 21, 2016·Advanced Materials·Dorsa ParvizMicah J Green
Oct 16, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Touseef HabibMicah J Green
Dec 14, 2016·Chemical Communications : Chem Comm·S A ShahM Radovic
Dec 16, 2016·Physical Chemistry Chemical Physics : PCCP·Hengcong TaoJohn Texter
Feb 22, 2017·Nanotechnology·Wai-Chen LinFang-Chung Chen
Mar 23, 2019·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Jinwen QinMinhua Cao
Mar 1, 2018·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Morasae SamadiAlireza Z Moshfegh
Apr 14, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Shan ZhangErkang Wang
Jun 9, 2020·Colloids and Surfaces. B, Biointerfaces·Jiaying LuJingjing Li
Oct 10, 2021·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Mohammed J MezianiYa-Ping Sun

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