摘要
以MOF-5为前驱体,葡萄糖为额外碳源,采用静电纺丝技术,将糖基MOF-5纳米颗粒和聚丙烯腈混纺,经过高温碳烧,成功合成糖基MOF-5碳纳米纤维(Glc-MOF-5/MCNFs)。采用场发射扫描电镜(Scanning Electron Microscopy,SEM)、透射电子显微镜(Transmission Electron Microscope,TEM)、全自动比表面及孔隙度分析仪(Brunner Emmet Teller,BET)、X射线衍射(X-ray Diffraction,XRD)、X射线光电子能谱(X-Ray photoelectron spectroscopy,XPS)对材料进行表征。采用差分脉冲伏安法(DPV)对木犀草素的电化学行为进行研究,优化影响木犀草素电化学行为的修饰剂用量、富集电位、富集时间、pH。在最优条件下,木犀草素在Glc-MOF-5/MCNFs/GCE上的检测范围为9.0×10^(-9)~5.0×10^(-6) mol·L^(-1),相关系数为R^(2)=0.9954,检出限为5.2×10^(-9) mol·L^(-1),将此传感器用于实际样品检测,回收率为96.34%~100.58%。
Glycosyl functionalized MOF-5 based porous carbon nanofibers was synthesized by used MOF-5 as a precursor and glucose as an additional carbon source.The cubic glycosyl functionalized MOF-5 nanoparticles(Glc-MOF-5)and polyacrylonitrile(PAN)suspension were electrospun by electrostatic spinning technology.The as-prepared electrosun nanofibers were then carbonized at high temperature under the protection of argon to prepare glycosyl functionalized MOF-5 based porous carbon nanofibers.The finally obtained material was characterized by Scanning Electron Microscopy(SEM),Transmission Electron Microscopy(TEM),Brunner Emmet Teller(BET),X-ray diffraction(XRD),X-Ray Photoelectron Spectroscopy(XPS).The electrochemical behavior of luteolin was studied.The influence conditions of dosage of modifier,accumulation potential,accumulation time,pH were studied.Under the optimal conditions,the linear response ranges for luteolin are 9.0×10^(-9)~5.0×10^(-6) mol·L^(-1),The correlation coefficient is R^(2)=0.9954,The detection limit of luteolin was 5.2×10^(-9) mol·L^(-1).The sensor couldbe used for the detection of luteolin in Actual sample with recovery rate of 96.34%~100.58%.
作者
程昊
李学暖
樊静静
李天昊
覃丹凤
唐婷范
王桂香
李彦青
CHENG Hao;LI Xue-nuan;FAN Jing-jing;LI Tian-hao;QIN Dan-feng;TANG Ting-fan;WANG Gui-xiang;LI Yan-qing(Guangxi Key Laboratory of Green Processing of Sugar Resources,College of Biological and Chemical Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;College of Chemistry and Chemical Engineering,Taishan College,Tai'an 271021,China;Province and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry,Nanning 530004,China)
出处
《化学研究与应用》
CAS
CSCD
北大核心
2022年第1期110-118,共9页
Chemical Research and Application
基金
国家自然科学基金项目(21968005)资助
2019年广西硕士研究生创新项目(YCSW2019208)资助
2021年广西科技大学研究生教育创新计划项目(GKYC202127)资助
广西糖资源绿色加工重点实验室开放课题“以蔗糖为碳前躯体可控制备有序多孔材料并用于电致化学发光传感”(GXTZY201701)资助
广西高等学校高水平创新团队及卓越学者计划项目(桂教人〔2014〕7号)。
