Guang Wang’s scientific contributions

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Publications (4)


Superhydrophobic Polydimethylsiloxane/CNT/Spandex Composites as Flexible Multifunctional Strain Sensors
  • Article

January 2025

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7 Reads

ACS Applied Nano Materials

Xuemei Zhang

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Hongwei Li

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Zhao Yang

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[...]

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Jie Liu


Recyclable Magnetically Driven Superhydrophobic Polyurethane Sponge for highly efficient Oil/Water mixtures and emulsions separation
  • Article
  • Full-text available

October 2018

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99 Reads

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2 Citations

IOP Conference Series Earth and Environmental Science

Magnetically driven superhydrophobic materials were coated on the surface of polyurethane sponges by Fe3O4 nanoparticals and stearic acid. The as-prepared sponge was characterized by scanning electron microscope, fourier transform infrared spectroscopy and other analytical techniques. The surface wettability of the as-prepared sponge, the separation capacity of oil/water mixtures and emulsions, the sorption kinetics of different types of oil, and the recyclability of the materials were studied. The Fe3O4 and stearic acid were coated onto the skeleton surface of the sponge, which make the as-prepared sponge possess magnetic and hierarchically microstructure. The water contact angle reach up to 158° on the surface of the superhydrophobic sponge. The materials also shows highly efficient oil/water mixtures and emulsions separation. Moreover, the oil separation capacities still keep a high value after 50 cycles of squeezing the saturated absorbed as-prepared sponge. All of these satisfactory properties made the as-prepared sponge as an ideal absorbents for oil/water mixtures and emulsions separation in the future.

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Fig.2. SEM images of the sponges:(a) pristine sponge,(b) as-prepared sponge,(c) stearic acid sponge, and (d) Fe 3 O 4 sponge.
Fig.3. SEM images of the as-prepared sponge by different concentration of stearic acid:(a) The stearic acid concentration is 0.5%,and(b) The stearic acid concentration is 4%.
Preparation of Superhydrophobic Magnetic Polyurethane Sponge for Removing Oil Pollutants from Water

August 2018

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218 Reads

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7 Citations

IOP Conference Series Materials Science and Engineering

The superhydrophobic magnetic sponge were prepared by Fe3O4 nanoparticals and stearic acid which were coated on the surface of polyurethane sponge. The preparation process of the superhydrophobic materials are prepared under mild, low-cost and environment-friendly conditions. pieces of PU sponges were decorated immersed in a ethanol solution which uniform suspension Fe3O4 nanoparticles ethanol by ultrasonication, and the obtained PU sponges were modified with stearic acid. The Fe3O4 and stearic acid were coated onto the skeleton surface of the sponge, which make the as-prepared sponge possess magnetic and hierarchically microstructure. The high elasticity sponge can through the simple squeeze realize oil recovery. After 5 cycles, the as-prepared sponge retains excellent absorption properties. The superhydrophobic magnetic polyurethane sponge has great potential in industrial oil separation and oil spill recovery in future.

Citations (2)


... Zhang et al. prepared superhydrophobic magnetic PU foam by coating Fe 3 O 4 nanoparticles and stearic acid onto the skeleton surface. 86 The water contact angle of the reported PUCF can reach up to 158°demonstrating highly efficient oil/water mixtures and emulsions separation. Shi et al. 87 3.3. ...

Reference:

Recent Advances of Polyurethane Composite Foam Materials in Oil/Water Separation Applications
Recyclable Magnetically Driven Superhydrophobic Polyurethane Sponge for highly efficient Oil/Water mixtures and emulsions separation

IOP Conference Series Earth and Environmental Science

... Among the few types of smart materials available to date is the porous polymeric matrix (PPM) containing magnetizable particles (MPs). PPM is a polyurethane sponge [1,5,6], and MP particles can be carbonyl iron microparticles [1,6], iron microparticles [7], magnetite nanoparticles [8,9], etc. The assembly of PPM with MPs forms what we call a magnetizable sponge (MS). ...

Preparation of Superhydrophobic Magnetic Polyurethane Sponge for Removing Oil Pollutants from Water

IOP Conference Series Materials Science and Engineering