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amino-functionalized UiO-66-doped mixed matrix membranes with high permeation performance and fouling resistance

Chinese Journal of Chemical Engineering 2024年第3期67卷 68-77页

作者： Yi Zhang Di Liu Zhaoli Wang Junjian Yu Yanyin Cheng Wenjing Li Zhe Wang Hongzhe Ni Yuchao Wang School of Chemical Engineering Changchun University of TechnologyChangchun 130012China Advanced Institute of Materials Science Changchun University of TechnologyChangchun 130012China Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province Changchun 130012China School of Chemistry and Life Science Changchun University of TechnologyChangchun 130012China

For the reduction of bovine serum proteins from wastewater,a novel mixed matrix membrane was prepared by functionalizing the substrate material polyaryletherketone(PAEK),followed by carboxyl groups(C-SPAEKS),and then adding amino-functionalized UiO-66-NH_(2)(Am-UiO-66-NH_(2)).aminofunctionalization of UiO-66 was accomplished by melamine,followed by an amidation reaction to immobilize Am-UiO-66-NH_(2),which was immobilized on the surface of the membrane as well as in the pore channels,which enhanced the hydrophilicity of the membrane surface while increasing the negative potential of the membrane *** nanoparticle-loaded ultrafiltration membrane has good permeation performance,with a pure water flux of up to 482.3 L·m^(-2)·h^(-1) for C-SPAEKS/AmUiO-66-NH_(2) and a retention rate of up to 98.7%for bovine serum albumin(BSA)-contaminated ***,after several hydrophilic modifications,the flux recovery of BSA contaminants by this series of membranes increased from 56.2%to 80.55%of pure *** results of ultra-filtration flux time tests performed at room temperature showed that the series of ultrafiltration membranes remained relatively stable over a test time of 300 ***,the newly developed mixed matrix membrane showed potential for high efficiency and stability in wastewater treatment containing bovine serum proteins.

关键词： Ultrafiltration Mixed matrix membranes amino functionalization Hydrophilic modification Negatively charged

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Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(Ⅵ)sequestration

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Frontiers of Chemical Science and Engineering 2023年第12期17卷 2037-2049页

作者： Jiafeng Ouyang Wenlu Guo Lin Wang Changming Nie Dadong Shao Weiqun Shi Liyong Yuan School of Environmental and Biological Engineering Nanjing University of Science and TechnologyNanjing 210094China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001China

Although mesoporous silica with magnetically hybridized two-dimensional channel structures has been well studied in recent years,it remains a challenge to fabricate the counterpart with macroporous three-dimensional cubic structures since the highly acidic preparation conditions lead to dissolution of magnetic ***,we successfully prepared magnetic KIT-6 nano-composite and its amino derivatives by bearing acid-resistant iron *** prepared materials exhibited excellent properties for U(VI)ions removal from aqueous solutions under various *** experimental data show that the U(VI)adsorption features fast adsorption kinetics,high adsorption capacity and ideal selectivity toward U(VI).The adsorption process is of spontaneous and endothermic nature and ionic strength independence,and the adsorbents can be easily regenerated by acid *** to pristine KIT-6,the introduction of magnetism does not reduce the efficiency of the material to remove U(VI)while exerting its role as a recovery *** findings of this work further demonstrate the potential broad application prospects of magnetic hybrid mesoporous silica in radionuclide chelation.

关键词： magnetic nanoparticle 3D mesoporous silica amino functionalization adsorption of U(VI) acid resistance

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amino-functionalized Ti_(3)C_(2)T_(x) with anti-corrosive/wear function for waterborne epoxy coating

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Journal of Materials Science & Technology 2020年第19期54卷 144-159页

作者： Han Yan Meng Cai Wen Li Xiaoqiang Fan Minhao Zhu Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Tribology Research Institute School of Mechanical EngineeringSouthwest Jiaotong UniversityChengdu 610031China

Two-dimensional Ti_(3)C_(2)T_(x) flakes have great application potential in various areas due to their optical,electronic,electrochemical and mechanical properties,but their anti-corrosion and wear-resistance performance were not well *** difficulties in achieving good dispersity and interface interaction of inorganic additives in organic coatings hinder the incorporation of Ti_(3)C_(2)T_(x) into the epoxy ***,few-layered Ti_(3)C_(2)T_(x) sheets with amino-functionalization were prepared,and as reinforced-additives were added into the waterborne epoxy ***-corrosion and tribological properties of as-prepared composite coatings were investigated in *** results reveal that the composite coating with 0.5 wt.%amino-functionalized Ti_(3)C_(2)T_(x) sheets shows excellent corrosion protection(the lowest frequency impedance was 3.12×10^(9) cm^(2))and wear resistance(wear rate was reduced by 72.74%).The greatly improving performance of composite coatings mainly depends on:(a)good dispersity and compatibility of amino-functionalized Ti_(3)C_(2)T_(x) in organic matrix,(b)high adhesion strength between coating and metal substrate and(c)the intrinsic properties of Ti3C2Tx *** work provides a good path for applications of MXene as multifunctional additives.

关键词： Ti_(3)C_(2)T_(x) amino functionalization Waterborne epoxy coating Corrosion Wear

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Crosslinking acrylamide with EDTA-intercalated layered double hydroxide for enhanced recovery of Cr(Ⅵ)and Congo red:Adsorptive and mechanistic study

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Frontiers of Environmental Science & Engineering 2020年第3期14卷 189-201页

作者： Jing Li Haiqin Yu Xue Zhang Rixin Zhu Liangguo Yan School of Water Conservancy and Environment University of JinanJinan 250022China

We prepared ethylenediaminetetraacetic acid(EDTA)-intercalated MgAl-layered double hydroxide(LDH-EDTA),then grafted acrylamide(AM)to the LDH-EDTA by a cross-linking method to yield a LDH-EDTA-AM composite;we then evaluated its adsorptive ability for Congo red(CR)and hexavalent chromium(Cr(Ⅵ))in single and binaiy adsorption *** adsorption process on LDH-EDTA-AM for CR and Cr(Ⅵ)achieved equilibrium quickly,and the removal efficiencies were minimally affected by initial *** maximum uptake quantities of CR and Cr(Ⅵ)on LDH-EDTAAM were 632.9 and 48.47 mg/g,*** mixed systems,chromate removal was stimulated by the presence of CR,while the adsorption efficiency of C R was almost not influenced by coexisting Cr(Ⅵ).The mechanisms involved electrostatic attraction,surface complexation,and anion exchange for the adsorption of both hazardous *** the Cr(Ⅵ)adsorption process,reduction also took *** removal efficiencies in real contaminated water were all higher than those in the laboratory solutions.

关键词： Chromate Dye adsorption Simultaneous removal Cross-linking method amino functionalization

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Can amino-functionalized carbon nanotubes carry functional nerve growth factor?

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Neural Regeneration Research 2014年第3期9卷 285-292页

作者： Wen Chen Qing Xiong Quanxia Ren Yake Guo Gao Li School of Pharmacology Tongji Medical College Huazhong University of Science and Technology School of Pharmacy Shihezi University

Carbon nanotubes can carry protein into cells to induce biological effects. amino-functionalized carbon nanotubes are soluble and biocompatible, have high reactivity and low toxicity, and can help promote nerve cell growth. In this study, amino-functionalized ethylenediamine-treated multi-walled carbon nanotubes were used to prepare carbon nanotubes-nerve growth factor complexes by non-covalent grafting. The physicochemical properties, cytotoxicity to PC12 and chick embryo dorsal root ganglion, and biological activity of the carbon nanotubes-nerve growth factor complexes were investigated. The results showed that amino functionalization improved carbon nanotubes-nerve growth factor complex dispersibility, reduced their toxicity to PC12 cells, and promoted PC 12 cell differentiation and chick embryo dorsal root ganglion.

关键词： nerve regeneration spinal cord injury carbon nanotubes amino functionalization ner-ve growth factor cytotoxicity biological activity dispersibility PC12 cells chick embryo dorsal rootganglion NSFC grant neural regeneration

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A facile and controllable one-pot synthesis approach to amino-functionalized hollow silica nanoparticles with accessible ordered mesoporous shells

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Chinese Chemical Letters 2021年第3期32卷 1177-1180页

作者： Shaoxin Deng Cheng-Xing Cui Lu Liu Lingyao Duan Jichao Wang Yuping Zhang Lingbo Qu Postdoctoral Station of Food Science and Engineering College of Food Science and EngineeringHenan University of TechnologyZhengzhou 450001China Postdoctoral Research Base School of Chemistry and Chemical EngineeringHenan Institute of Science and TechnologyXinxiang 453003China College of Chemistry and Institute of Green CatalysisZhengzhou UniversityZhengzhou 450001China

The development of a practical synthetic method to functionalize hollow mesoporous silica with organic groups is of current intere st for selective adsorption and ene rgy storage ***,a facile and controllable one-pot approach for the synthesis of monodisperse amino-functionalized hollow mesoporous silica nanoparticles is presented.A novel solid-to-hollow structural transformation procedure of the silica nanoparticles is *** structural transformation is easily designed,as obse rved through transmission electro n microscopy,by tailo ring the HCl and N-lauroylsarcosine sodium molar ratio and the water content in the *** and radially oriented in situ aminofunctionalized mesochannels were successfully introduced into the shells of the hollow silica nanoparticles.A formation mechanism for the hollow mesoporous silica materials is discussed.

关键词： Hollow silica One-pot approach Solid-to-hollow transformation Ordered mesoporous shell amino functionalization

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