In this work,the silk fbroin/cellulose blend nanofbrous membranes modifed with sodium-3-sulfobenzoate(S-SCBNM)were fabricated by electrospinning technique for lysozyme adsorption.The morphology and structure of membra...In this work,the silk fbroin/cellulose blend nanofbrous membranes modifed with sodium-3-sulfobenzoate(S-SCBNM)were fabricated by electrospinning technique for lysozyme adsorption.The morphology and structure of membranes was observed.The efect of sulfate contents,pH values and concentration of lysozyme on adsorption performance were studied,respectively.The reuse capacity was evaluated.The results showed that the resultant S-SCBNM exhibited integrated properties of ultrathin fber diameter(148 nm),fast adsorption equilibrium,excellent adsorption performance(636 mg g−1)and good reversibility.We envision that this new class of green and natural blend membranes is particularly promising for the development of proteins separation.展开更多
In this study,a novel copper ion(Cu^(2+))crosslinked composites beads with components of sodium alginate(SA)as gel matrix and UiO-66-(COOH)_(2) metal organic framework(MOF)nanoparticle as functional fller could efecti...In this study,a novel copper ion(Cu^(2+))crosslinked composites beads with components of sodium alginate(SA)as gel matrix and UiO-66-(COOH)_(2) metal organic framework(MOF)nanoparticle as functional fller could efectively adsorb toxins in dialysate.The maximum adsorption capacity of the optimized composite beads(Cu-SA/U-4)for creatinine reached 125.0 mg/g with a positive synergistic efect based on Langmuir isotherm model and pseudo-second-order kinetic model,which was 1.75 times and 1.50 times that of single component beads(Cu-SA)and UiO-66-(COOH)_(2) nanoparticle respectively.Furthermore,when the dialysis performance using thin-flm nanofbrous composite(TFNC)membrane was comparable,introduction of Cu-SA/U-4 beads into the dialysate allowed the volume of dialysate reduced to one-tenth of that without beads.Therefore,the coordination of such highly efcient adsorbent beads and TFNC dialysis membrane can economize the usage of the dialysate and contributes to realize lightweight hemodialysis.More importantly,we not only prepared a kind of composite bead via carefully designed strategy,but also proposed widely applicable idea of using adsorbents in combination with dialysis membrane to realize lightweight or miniaturized hemodialysis.展开更多
The separator with excellent mechanical and thermal properties are highly required for lithium ion batteries(LIBs).Therefore,it is crucial to develop novel nanofbrous membranes with enhanced mechanical strength and th...The separator with excellent mechanical and thermal properties are highly required for lithium ion batteries(LIBs).Therefore,it is crucial to develop novel nanofbrous membranes with enhanced mechanical strength and thermal stability.In this work,the fuorinated polyimide(FPI)was synthesized and blended with polyvinylidene fuoride(PVDF)to fabricate composite nanofbrous membranes(CNMs)via electrospinning method.Benefting from the introduction of aromatic FPI,the prepared PVDF/FPI nanofbrous membranes were endowed with enhanced mechanical strength and thermal stability.When the FPI content increased from 0 to 30 wt%,the tensile strength of composite nanofbrous membranes enhanced from 1.57 to 2.30 MPa.Moreover,there are almost no dimensional shrinkage for the CNM-30 containing 30 wt%FPI after heat treatment at 160℃ for 1 h.Furthermore,the prepared CNMs show improved electrochemical performances in comparison with neat PVDF and commercial Celgard membranes.The electrolyte uptake and ionic conductivity of the CNMs could reach to 522.4% and 1.14 ms·cm^(−1),respectively.The prepared CNMs could provide an innovative and promising approach for the development and design of high-performance separators.展开更多
基金The authors acknowledge the National Natural Science Foundation of China(No.21506173)Undergraduates'Innovation and Entrepreneurship Training Program in Southwest University(No.P202110635060).
文摘In this work,the silk fbroin/cellulose blend nanofbrous membranes modifed with sodium-3-sulfobenzoate(S-SCBNM)were fabricated by electrospinning technique for lysozyme adsorption.The morphology and structure of membranes was observed.The efect of sulfate contents,pH values and concentration of lysozyme on adsorption performance were studied,respectively.The reuse capacity was evaluated.The results showed that the resultant S-SCBNM exhibited integrated properties of ultrathin fber diameter(148 nm),fast adsorption equilibrium,excellent adsorption performance(636 mg g−1)and good reversibility.We envision that this new class of green and natural blend membranes is particularly promising for the development of proteins separation.
基金This work was supported by the Fundamental Research Funds for the Central Universities(2232020A-04)Shanghai Municipal Natural Science Foundation(19ZR1401300).
文摘In this study,a novel copper ion(Cu^(2+))crosslinked composites beads with components of sodium alginate(SA)as gel matrix and UiO-66-(COOH)_(2) metal organic framework(MOF)nanoparticle as functional fller could efectively adsorb toxins in dialysate.The maximum adsorption capacity of the optimized composite beads(Cu-SA/U-4)for creatinine reached 125.0 mg/g with a positive synergistic efect based on Langmuir isotherm model and pseudo-second-order kinetic model,which was 1.75 times and 1.50 times that of single component beads(Cu-SA)and UiO-66-(COOH)_(2) nanoparticle respectively.Furthermore,when the dialysis performance using thin-flm nanofbrous composite(TFNC)membrane was comparable,introduction of Cu-SA/U-4 beads into the dialysate allowed the volume of dialysate reduced to one-tenth of that without beads.Therefore,the coordination of such highly efcient adsorbent beads and TFNC dialysis membrane can economize the usage of the dialysate and contributes to realize lightweight hemodialysis.More importantly,we not only prepared a kind of composite bead via carefully designed strategy,but also proposed widely applicable idea of using adsorbents in combination with dialysis membrane to realize lightweight or miniaturized hemodialysis.
基金The authors gratefully acknowledge the supports from the Emergency Support and Public Safety Scientifc Research Projects of National Advanced Functional Fiber Innovation Center(2020-fx020009)The Postgraduate Innovation Foundation of Xi’an Polytechnic University(CHX2020037)Natural Science Foundation of Education Department of Shaanxi Province(21JK0657).
文摘The separator with excellent mechanical and thermal properties are highly required for lithium ion batteries(LIBs).Therefore,it is crucial to develop novel nanofbrous membranes with enhanced mechanical strength and thermal stability.In this work,the fuorinated polyimide(FPI)was synthesized and blended with polyvinylidene fuoride(PVDF)to fabricate composite nanofbrous membranes(CNMs)via electrospinning method.Benefting from the introduction of aromatic FPI,the prepared PVDF/FPI nanofbrous membranes were endowed with enhanced mechanical strength and thermal stability.When the FPI content increased from 0 to 30 wt%,the tensile strength of composite nanofbrous membranes enhanced from 1.57 to 2.30 MPa.Moreover,there are almost no dimensional shrinkage for the CNM-30 containing 30 wt%FPI after heat treatment at 160℃ for 1 h.Furthermore,the prepared CNMs show improved electrochemical performances in comparison with neat PVDF and commercial Celgard membranes.The electrolyte uptake and ionic conductivity of the CNMs could reach to 522.4% and 1.14 ms·cm^(−1),respectively.The prepared CNMs could provide an innovative and promising approach for the development and design of high-performance separators.