赤铁矿
吸附
明胶
废水
化学工程
动力学
纳米颗粒
化学
磁铁矿
比表面积
材料科学
有机化学
矿物学
废物管理
催化作用
冶金
工程类
物理
量子力学
作者
Hee Jung Kim,Jeong‐Won Lee,Jin Hyuk Choi,Dong Hoe Kim,Gill Sang Han,Hyun Suk Jung
标识
DOI:10.1016/j.jhazmat.2021.125696
摘要
Gelatin-conjugated hematite nanoparticles (HT NPs) are prepared through the solid-state phase transformation in the presence of phosphate. Their adsorption capacity and kinetics are investigated for Pb removal in wastewater. The gelatin-conjugated HT NPs with a size of 4–6 nm exhibit an excellent Pb removal performance, with a high adsorption capacity of 169.49 mg g−1 and a fast equilibrium adsorption kinetics, attributed to the large number of active sites and highly negative charge on the surface of HT NPs. Moreover, the magnetic property of HT NPs enables to selectively collect NPs in the wastewater by using a permanent magnet, leading to its high reusability.
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