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biomimetic modification of Super-wetting Electrospun Poly(vinylidene fluoride)Porous Fibers with Organic Dyes and Heavy Metal Ions Adsorption,Oil/Water Separation,and Sterilization Performances Toward Wastewater Treatment

引用

Chinese Journal of Polymer Science 2022年第7期40卷 738-753页

作者： De-Xiang Sun Xiao-Lei Liao Nan Zhang Ting Huang Yan-Zhou Lei Xiao-Ling Xu Yong Wang School of Materials Science&Engineering Key Laboratory of Advanced Technologies of Materials(Ministry of Education)Southwest Jiaotong UniversityChengdu610031China Analytical and Testing Center Southwest Jiaotong UniversityChengdu610031China

Polymeric membranes with the integration of various functional performances toward wastewater treatment are urgently ***,most of the polymeric membranes only exhibit a single function of highly efficiently removing one kind of *** this work,a biomimetic modification method was introduced to tailor the chemical and topological structure of the porous poly(vinylidene fluoride)(PVDF)fibers prepared by *** polydopamine(PDA)nanoparticles were homogeneously introduced onto the surface of PVDF porous fibers via precisely tailoring the concentration of dopamine,which endowed the fibers with more polar groups and bigger roughness but did not destroy the crystalline *** fibrous membranes exhibited switchable superhydrophilicity and superlipophilicity characteristics,excellent adsorption abilities toward organic dyes,heavy metal ions and *** highest adsorption capacities achieved 917.4 mg/g toward methylene blue(MB),42.6 mg/g toward Cr(VI)and 74.6 g/g toward silicone oil,***,the membrane could rapidly remove the trace MB when water flowed through the *** membrane also exhibited excellent sterilization performances,and the bacterial eliminating rate achieved 99.9%for the *** and *** excellent light-to-heat conversion ability endowed the membrane with the selfheating ability,furtherly intensifying the wastewater treatment *** work confirms that the PDA nanoparticles-decorated PVDF porous fibers might be the new generation adsorbents used in wastewater treatment.

关键词： Poly(vinylidene fluoride)porous fibers biomimetic modification Adsorption Oil/water treatment Antimicrobial performance

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Designing macrophage membrane-engineered ruthenium/selenium nanoparticles to block bone metastasis of breast cancer

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Nano Research 2024年第8期17卷 7504-7512页

作者： Meijin Yang Zhiying Tang Xiaoying Li Yanzi Yu Lizhen He Tianfeng Chen College of Chemistry and Materials Science Department of Oncology of The First Affiliated HospitalJinan UniversityGuangzhou 510632China

Bone metastasis along with osteolysis is a common complication of advanced breast cancer,which directly destroys bone function and becomes one of the major causes of cancer-related *** is crucial to develop a new strategy to achieve effective cancer therapy and inhibition of osteolytic bone *** ruthenium(Ru)complexes exhibit therapeutic potential in cancer ***,the clinical applications of Ru complexes were limited by poor bioavailability,lacking targeting,nonspecific ***,in this study,engineering of cell membrane biomimetic modification was used to construct a highly biocompatible nanoplatform with carrying Ru metal complex of RuPOP and Se nanoparticles(SeNPs).Strikingly,the obtained RPSR nanoparticles can efficiently inhibit the proliferation,invasion and migration of breast cancer cells(MDA-MB-231 cells)in *** importantly,RPSR nanoparticles can induce cycle arrest,apoptosis by generating excessive intracellular(reactive oxygen species,ROS)to disrupt the normal redox balance and induce DNA damage in tumor ***,RPSR nanoparticles can also reshape bone microenvironment by regulating selenoproteins to inhibit osteoclasts and avoid osteolytic bone metastasis induced by tumor *** together,this study not only provides an effective cell membrane biomimetic strategy to enhance the shortcomings of metal complexes,but also demonstrates potential clinical significance for the combined treatment of anti-cancer and bone metastasis inhibition.

关键词： cell membrane nanoparticles biomimetic modification ruthenium complexes selenium nanoparticles tumor bone metastasis

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