Fabrication of magnetic hydroxypropyl cellulose-g-poly(acrylic acid) porous spheres via Pickering high internal phase emulsion for removal of Cu(2+) and Cd(2.).
A series of magnetic hydroxypropyl cellulose-g-poly(acrylic acid) porous spheres were prepared via O/W Pickering high internal phase emulsions (HIPEs) integrated precipitation polymerization. The structure and composition of modified Fe3O4 and porous structures were characterized by TEM, XRD, TGA and SEM. The results indicated that the silanized Fe3O4 can influence greatly the pore structure of magnetic porous sphere in addition to non-negligible impacts of the proportion of mixed solvent and co-surfactant. The adsorption experiment demonstrated that the adsorption equilibrium can be reached within 40min and the maximal adsorption capacity was 300.00mg/g for Cd(2+) and 242.72mg/g for Cu(2+), suggesting its fast adsorption kinetics and high adsorption capacity. After five adsorption-desorption cycles, no significant changes in the adsorption capacity were observed, suggesting its excellent reusability. The magnetic porous sphere can be easily separated from the solution and then find its potential as a recyclable material for highly efficient removal of heavy metals.
Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Middle Road 18, Lanzhou 730000, PR China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, PR China.
Yongfeng
Y
Zhu
Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Middle Road 18, Lanzhou 730000, PR China; Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China. Electronic address: zhengya@lzu.edu.cn.
Yian
Y
Zheng
Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Middle Road 18, Lanzhou 730000, PR China.
Li
L
Zong
Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Middle Road 18, Lanzhou 730000, PR China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, PR China.
Feng
F
Wang
Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Middle Road 18, Lanzhou 730000, PR China. Electronic address: aqwang@licp.cas.cn.
Aiqin
A
Wang
D000180:Acrylic Resins / Q000737:chemistry*; D000327:Adsorption; D002104:Cadmium / Q000737:chemistry* / Q000302:isolation & purification*; D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D003300:Copper / Q000737:chemistry* / Q000302:isolation & purification*; D004655:Emulsions; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D058105:Polymerization; D016062:Porosity; D012828:Silicones / Q000737:chemistry; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification; D018508:Water Purification
D000180:Acrylic Resins; D002104:Cadmium; D002482:Cellulose; D003300:Copper; D004655:Emulsions; D058185:Magnetite Nanoparticles; D012828:Silicones; D062065:Wastewater; D014874:Water Pollutants, Chemical; C006903:carbopol 940; C008079:hydroxypropylcellulose
Adsorption; Magnetic; Pickering HIPEs; Polymerization; Porous sphere