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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.
Ting-Ting Li,Wenna Dai,Liwei Wu,Hao-Kai Peng,Xiayun Zhang,Bing-Chiuan Shiu,Jia-Horng Lin,Ching-Wen Lou 한국섬유공학회 2019 Fibers and polymers Vol.20 No.2
In order to deeply explore the fiber characteristics influencing on stab resistance of shear thickening fluid (STF)-impregnated fabrics, two different weaving fabrics, ultra-high molecular weight polyethylene (UHMWPE) fabric and Kevlar fabrics are saturate the various concentrations and particle size of STFs. Result shows that, SiO2/PEG-200 blends demonstrate quick shear-thickening property, and the critical shear rate lowers to 1.2-45 s-1 with higher concentration of 75 nm SiO2. STF concentration and particle size significantly affect spike puncture resistance property, but the knife stab resistance mainly depends on fiber characteristics. Comparatively, STF-UHMWPE composite fabrics exhibit better knife stab resistance but weaker spike puncture resistance than STF-Kevlar fabrics. This study can provide an optimization for structure design of stab resistance armors in the future.
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.