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Coordination of thin-film nanofibrous composite dialysis membrane and reduced graphene oxide aerogel adsorbents for elimination of indoxyl sulfate

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Chinese Journal of Chemical Engineering 2022年第9期35卷 111-121页

作者： Yuanyuan Jin Siping Ding Peiyun Li Xuefen Wang State Key Lab for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

The protein-bound uremic toxins,represented by indoxyl sulfate(IS),have been associated with the progression of chronic kidney disease and the development of cardiovascular disease in the presence of impaired renal ***,we proposed a novel strategy of thin-film nanofibrous composite(TNFC)dialysis membrane combined with reduced graphene oxide(rGO)aerogel adsorbents for clinical removal of IS as well as high retention of *** TFNC membrane was prepared by electrospinning in conjunction with coating-reaction method and proved to have good selectivity and *** further improve the removal rate of toxins,we used a medium hydrothermal method following by freeze-drying treatment to obtain the r GO aerogel *** exhibited excellent adsorption for IS with a maximum adsorption capacity of 69.40 mg·g^(-1)throughπ-πinteraction and hydrogen bonding interaction based on Langmuir isotherm ***-dependent absorption experiments showed that it reached adsorption equilibrium within 4 h,which was matched with the hemodialysis *** coordination was significantly exhibited by introducing r GO aerogel blocks into the dialysate for absorbing the diffused free IS during *** the advantages of the TFNC dialysis membrane and the rGO aerogel,the volume of dialysate for hemodialysis was only one-tenth of that without adsorbent blocks but with very comparable dialysis performance(the clearance of IS at 51.8%and the retention of HSA over 98%),which could lighten conventional hemodialysis effectively and be benefit to realize the miniaturization of the hemodialysis ***,the coordination of the TFNC dialysis membrane and rGO aerogel adsorbents would open a new path for the development of portable artificial kidney.

关键词： indoxyl sulfate Thin-film nanofibrous composite membrane rGO aerogel adsorbents Hemodialysis Coordination Portable artificial kidney

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