{P_(4)Mo_(6)}基多金属氧酸盐构筑的镍配合物作为一种电化学传感器用于检测Cr^(Ⅵ)和Fe^(Ⅲ)离子  

Nickel complex constructed by{P_(4)Mo_(6)}-based polyoxometalates as an electrochemical sensor for the detection of Cr^(Ⅵ)and Fe^(Ⅲ)ions

作　　者：刘晓慧[1] 李慧[1] 徐娜[1] 王秀丽[1] LIU Xiao-hui;LI Hui;XU Na;WANG Xiu-li(College of Chemistry and Materials Engineering,Bohai University,Jinzhou 121013,China)

机构地区：[1]渤海大学化学与材料工程学院,辽宁锦州121013

出　　处：《东北师大学报(自然科学版)》2024年第2期100-105,共6页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(22101030);辽宁省博士启动基金资助项目(2021-BS-255).

摘　　要：以钼酸钠、硫酸镍和3-氨甲基吡啶为原料,通过水热法合成了一个{P_(4)Mo_(6)}基多金属氧酸盐构筑的镍配合物,其化学式为[H_(2)(3-AP)]_(6){Ni[Mo_(6)O_(12)(OH)_(3)(PO_(4))_(2)(HPO_(4))_(2)]_(2)}(化合物1),3-AP为3-氨甲基吡啶.该化合物为三维超分子结构,其由{Ni[P_(4)Mo_(6)^(Ⅴ)O_(31)]_(2)}^(22-)记为{Ni(P_(4)Mo_(6))_(2)}和质子化的3-AP通过氢键相互作用连接而成.研究了该配合物修饰的碳糊电极(1-CPE)对Cr^(Ⅵ)和Fe^(Ⅲ)离子的电化学检测,检出限(LODs)分别为2.3和4.6μmol/L.同时1-CPE在各种金属离子的存在下对Cr^(Ⅵ)和Fe^(Ⅲ)表现出良好的选择性和较强的抗干扰能力.A nickel complex constructed by{P_(4)Mo_(6)}-based polyoxometalates was synthesized by hydrothermal method using sodium molybdate,nickel sulfate,and 3-aminomethylpyridine as raw materials.The chemical formula is[H_(2)(3-AP)]_(6){Ni[Mo_(6)O_(12)(OH)_(3)(PO_(4))_(2)(HPO_(4))_(2)]_(2)}(1)(3-AP=3-aminomethylpyridine).The compound is a three-dimensional supramolecular structure formed by hydrogen bonding interactions between{Ni[P_(4)Mo_(6)^(Ⅴ)O_(31)]_(2)}^(22-)and protonated 3-AP.In this paper,the electrochemical detection of Cr^(Ⅵ)和Fe^(Ⅲ)ions by complex 1 modified carbon paste electrode(1-CPE)was studied.The detection limits(LODs)were 2.3 and 4.6μmol/L,respectively.Moreover,they show good selectivity to Cr^(Ⅵ)和Fe^(Ⅲ)in the presence of various metal ions,which proves strong anti-interference ability.

关 键 词：{P_(4)Mo_(6)}基多金属氧酸盐 水热合成法 电催化性能 重金属离子 晶体结构 

分 类 号：O611[理学—无机化学]