Propanetricarboxylic acid ornamented multi-CeⅢ encapsulated phospho(Ⅲ) tungstate and its electrochemical sensing properties

作者：Bao-Xing Zeng; Guo-Ping Liu; Yu-Jiao Hao; Zhuo Chen; Li-Juan Chen; Jun-Wei Zhao

来源：Tungsten, 2023, 5(02): 277-285.

A propanetricarboxylic acid ornamented multi-CeⅢ encapsulated phospho(Ⅲ)tungstate [H2N(CH3)2]4Na4H2[Ce4(HP)W4(H20)14(H2PTCA)2O18][(HPⅢ)2W22O76]·16H2O(1,H3PTCA=1,2,3-propanetricarboxylic acid) was obtained by a facile one-step reaction of Na2WO4·2H2O,H3PO3,Ce(NO3)·6H2O,itaconic acid(H2ICA) and dimethylamine hydrochloride.Notably,the polyanion of 1 possesses a neotype [(HPⅢ)2W22O76]12- fragment and an unusual [HPⅢW4O18]8- unit bridge d by fourCe3+centers in the assistance of two H2PTCA-ligands.It is worth emphasizing that two H2PTCA-ligands simultaneously chelate with WⅥ and CeⅢ centers.Furthermore,the composite of 1 and carboxyl-functionalized multi-walled carbon nanotube(CMCN) is utilized to modify glassy carbon electrode(GCE) to develop the 1@CMCN/GCE electrochemical sensor.The 1@CMCN/GCE electrochemical sensor displays potential sensing property toward detection of noradrenaline(NDL) with low limit of 2.10 μmo1·L-1.This research will powerfully facilitate continuous investigations on rational design and in-depth development of structure-oriented rare-earth inserted phospho(Ⅲ)tungstates and tremendously promote their application developments in drug testing,clinical diagnosis,and food detection.

• 单位
  河南大学