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Jiangdong Dai,Zhi Zhu,Jie Yang,Chunxiang Li 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.11
Herein, we presented a simple synthetic strategy for fabricating magnetic nanoparticles uniformly dispersed on the surface of attapulgite (ATP), namely the impregnation and pyrolysis method. Subsequently, using magnetic attapulgite as supported core through chemical modification, a novel surface molecularly imprinted nanomaterial (named as MATP/MIPs) was prepared via precipitation polymerization. The obtained MATP/MIPs showed excellent properties by a variety of characterizations including FT-IR, SEM, TEM, VSM, XRD and TGA. Moreover, the adsorption experiments were carried out in aqueous medium at different temperatures, to study the adsorption isotherm, adsorption kinetics and selective recognition ability of MATP/MIPs toward sulfamethazine (SMZ). The experimental data were fitted to the Freundlich isotherm model better than to the Langmuir model. The equilibrium adsorption capacity for SMZ onto MATP/MIPs is higher than onto MATP/NIPs, demonstrating the existence of imprinted cavities. Due to the advantage of coated nanoshell, the adsorption equilibrium was achieved quickly within 45 min, and the data were well-described by the pseudo-second-order kinetic mode. Compared with other antibiotics, the MATP/MIPs exhibited excellent selectivity for SMZ. In addition, the imprinted material still showed good regeneration ability after 10 cycles which make it possible for practical application in the recognition and separation of antibiotics.
Zhenjiang Tan,Minggao Tan,Jiangdong Dai,Wenna Ge,Wenjing Zhu,Yongsheng Yan 한국섬유공학회 2020 Fibers and polymers Vol.21 No.4
Here, novel magnetic imprinted porous foams (MIFs) were prepared by Pickering oil-in-water high internal phaseemulsion polymerization, using renewable cellulose nanocrystals (CNCs) derived from cotton source as the stabilizer, andsurfactant Tween 85 and iron oxide magnetic nanoparticles as additive in aqueous phase, for selective adsorption of 4-nitrophenol (4-NP). Interconnected porous foam structure was formed and optimized by controlling the addition amount ofsolid stabilizer CNCs, Tween 85, and oil phase volume, the optimum value of which was 7.5 wt%, 5.0 wt%, and 85 %,respectively. The as-synthesized imprinted material had the good thermal stability and magnetic responsivity. The adsorptionequilibrium data was fitted well by the Langmuir isothermal model with a maximum adsorption capacity of 287.5 μmol/g. Pseudo-second-order kinetics model could better describe the kinetics data. MIFs showed excellent selective ability for 4-NPas compared with these structural analogues. Besides, Thomas model explained the dynamic breakthrough curves better. Theregeneration ability of MIFs was also satisfying after several reuse.
Jixiang Wang,Jianming Pan,Yijie Yin,Runrun Wu,Xiaohui Dai,Jiangdong Dai,Lin Gao,Hongxiang Ou 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.25 No.-
Thermal-responsive and magnetic molecularly imprinted polymers (TMMIPs) based on Fe3O4@carbon (Fe3O4@C) were prepared by free radical polymerization and applied to selective adsorption and controlled release of 2,4,5-trichlorophenol (2,4,5-TCP) from aqueous solution. TMMIPs were composed of multilayer structure, and exhibited magnetic sensitivity, magnetic stability and thermal stability (especially below the. The reversible transform of mean diameter resulted from the change of testing temperature, indicating the thermo-responsive properties of TMMIPs. Selective adsorption and controlled release of 2,4,5-TCP were also investigated at 25 8C and higher temperature (such as 45 8C and 60 8C), respectively.
Atian Xie,Jiuyun Cui,Yangyang Chen,Jihui Lang,Chunxiang Li,Yongsheng Yan,Jiangdong Dai 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.74 No.-
Realization of fast, efficient and continuous oil–water separation is of great significance for solving theproblem of oil pollution. We present here a facile hydrothermal strategy to synthesize a superhydrophilicplatanus fruit-like Ni@Ni(OH)2 hierarchical architecture (SI-PFHA). Additionally, superhydrophobicplatanus fruit-like Ni@Ni(OH)2 hierarchical architecture (SO-PFHA) is obtained through stearic acidmodification of SI-PFHA. Dual-channel separation system is integrated based on two superwettingmembranes. Such separation system is competent for continuous light/heavy oil–water separation withhighflux and high separation efficiency. Importantly, outstanding durability and reusability make thisseparation system a promising strategy for practical application in remediation of oily wastewater.
Wenna Ge,Zhiping Zhou,Peng Zhang,Qingfang Zhang,Zhen Cao,Ruilong Zhang,Yongsheng Yan,Jiangdong Dai 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.66 No.-
Here, a new hierarchical porous carbon was first prepared from sodium lignosulphonate (SLS), an industrial by-product, via a confined carbonization and alkali activation methods using graphene oxide (GO) as template, and was used for ciprofloxacin (CIP) removal. The addition of GO nanosheets remarkably affected the morphology and pore structure. GLHPC-1, obtained at GO/SLS weight ratio of 1:100, possess a largest specific surface area of 3223 m2 g−1 and pore volume of 2.275 cm3 g−1, and thus exhibited an ultrahigh adsorption of 980.4 mg g−1 at 318 K and fast adsorption rate, as well as a good recycle ability in practice.