Construction of hydrophobic alginate-based foams induced by zirconium ions for oil and organic solvent cleanup

Yaquan Wang; Yi Feng; Jianfeng Yao

doi:10.1016/j.jcis.2018.08.073

Construction of hydrophobic alginate-based foams induced by zirconium ions for oil and organic solvent cleanup

J Colloid Interface Sci. 2019 Jan 1:533:182-189. doi: 10.1016/j.jcis.2018.08.073. Epub 2018 Aug 23.

Authors

Yaquan Wang¹, Yi Feng¹, Jianfeng Yao²

Affiliations

¹ College of Chemical Engineering, Jiangsu Key Lab for the Chemistry & Utilization of Agricultural and Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
² College of Chemical Engineering, Jiangsu Key Lab for the Chemistry & Utilization of Agricultural and Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu 210037, China. Electronic address: jfyao@njfu.edu.cn.

PMID: 30153595
DOI: 10.1016/j.jcis.2018.08.073

Abstract

Hydrophobic modification of sodium alginate (SA) foams via a simple freeze-drying and post cross-linking induced by zirconium (Zr) ions was developed. All results demonstrated that Zr ions not only constructed surface microstructure but also lowered surface energy of foams, leading to the hydrophobic character. Hydrophobic and oleophilic foams showed excellent adsorption capacities for different oils and organic solvents (11.2-25.9 g/g). Furthermore, SA solution can be also coated on porous substrates, such as melamine sponges (MS) and Nylon strainers (NS), to give hydrophobic modification by Zr ion crosslinking. These excellent performances made them a promising for oil adsorption and cleanup.

Keywords: Hydrophobic and oleophilic foam; Oil adsorption and cleanup; Sodium alginate; Zirconium ion.