Recyclable Magnetically Driven Superhydrophobic Polyurethane Sponge for highly efficient Oil/Water mixtures and emulsions separation

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Zhang, Xuemei^1,3 ; Wang, Guang^2 ; Fu, Feng^1 ; Gao, Xiaoming^1 ; Niu, Fengxing^1 ; Wei, Qingbo^1 ; Hou, Xiufang^1

Shaanxi Key Laboratory of Chemical Reaction Engineering, Department of Chemistry and Chemical Engineering, Yan'An University, Yan'an, Shaanxi

716000, China^1

Yuanxing Energy Chemical Co. LTD of China Coal Group, Wushenqi, Nei Monggol

071300, China^2

College of Chemistry and Chemical Engineering, Yan'An University, Yan'an, Shanxi

716000, China^3

关键词: Oil/water mixtures;    Polyurethane sponge;    Separation capacity;    Sorption kinetics;    Superhydrophobic;    Superhydrophobic materials;    Surface wettability;    Water contact angle;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/4/012032/pdf
DOI  :  10.1088/1755-1315/186/4/012032

来源: IOP

【 摘 要 】

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.