Fabrication and Application of the Superhydrophobic Sponge Modified with Poly(dimethylsiloxane)/Silver Micro/Nano-particles/Polydopamine

doi:10.11944/j.issn.1000-0518.2015.06.140365

Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (6): 726-732.DOI: 10.11944/j.issn.1000-0518.2015.06.140365

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Fabrication and Application of the Superhydrophobic Sponge Modified with Poly(dimethylsiloxane)/Silver Micro/Nano-particles/Polydopamine

YANG Xiaotian^a, SHUAI Qian^a, LUO Yanmei^a, DONG Yike^a, TAN Yueming^a, CHEN Bo^a, MA Ming^{a, b, *}

^aKey Laboratory of Phytochemical R&D of Hunan Province,Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research(Ministry of Education of China),Hu'nan Normal University,Changsha 410081,China)
^bKey Laboratory of Jiangxi Province for Persistant Pollutants Control and Resources Recycle(Nanchang Hangkong University),Nanchang 330063,China

Received:2014-10-22 Accepted:2015-02-14 Published:2015-06-10 Online:2015-06-10
Contact: Ming MA
Supported by:
Supported by the National Natural Science Foundation of China (No.21275052, No.21305041, No.21275049), the Science Research Project of Hu'nan Provincial Science & Technology Department of China (No.2013SK3125, No.2013WK4005)

Abstract

Abstract:

Inspired by adhesive proteins in mussels, we prepared polydopamine (PDA) thin layer on the polyurethane sponge surface using dopamine self-polymerization under alkaline solution. Ag⁺ was reduced by glucose to form silver micro/nano-particles on the PDA thin layer, and then wrapped by polydimethylsiloxane (PDMS) to fabricate superhydrophobic surface. The prepared superhydrophobic sponge was characterized by water contact angle measurement, scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS) and Fourier transform infrared spectra (FT-IR), respectively, and proved that silver micro/nano-particles and hydrophobic silicon methyl groups have been successfully modified onto the sponge surface. Treated sponge exhibits superior absorptivity and selectivity to organic solvents and different kinds of oil. Saturated gravimetric absorption capacity of this sponge to oil-like solvents reached at least 12 times its own mass. Solvents can be easily recycled by squeezing behavior and sponge can regain its elasticity and absorptivity. This study would provide an economical, efficient and environmental-friendly method for the oil-water separation and the oil recovery.

Key words: superhydrophobic sponge, modified sponge, polydopamine, silver micro/nano-particles, polydimethylsiloxane, oil-water separation

CLC Number:

YANG Xiaotian, SHUAI Qian, LUO Yanmei, DONG Yike, TAN Yueming, CHEN Bo, MA Ming. Fabrication and Application of the Superhydrophobic Sponge Modified with Poly(dimethylsiloxane)/Silver Micro/Nano-particles/Polydopamine[J]. Chinese Journal of Applied Chemistry, 2015, 32(6): 726-732.

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Fabrication and Application of the Superhydrophobic Sponge Modified with Poly(dimethylsiloxane)/Silver Micro/Nano-particles/Polydopamine

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