Bifunctional ZrO_(2)@ZIF-90 nanozyme with high phosphohydrolase activity for sensitive electrochemical detection of methyl parathion  

作　　者：Xiaomin Pang Geoffrey I.N.Waterhouse Ruiqiang Wang Xuguang Qiao Yufeng Sun Zhixiang Xu 

机构地区：[1]Key Laboratory of Food Nutrition and Healthy in Universities of Shandong,College of Food Science and Engineering,Shandong Agricultural University,Tai’an 271018,China [2]School of Chemical Sciences,The University of Auckland,Auckland 1142,New Zealand [3]Shandong Cayon Testing Co.,Ltd.,Jining 272000,China

出　　处：《Food Science and Human Wellness》2025年第2期749-757,共9页食品科学与人类健康(英文)

基　　金：financially supported by the National Natural Science Foundation of China(No.31972149);Innovation Capability Improvement Project of Scientific and Technological Small and Medium-sized Enterprises in Shandong Province(No.2022TSGC2409);the Mac Diarmid Institute for Advanced Materials and Nanotechnology and the Dodd-Walls Centre for Photonic and Quantum Technologies。

摘　　要：In this work,a novel bifunctional zirconium dioxide@zeolitic imidazolate framework-90(ZrO_(2)@ZIF-90)nanozyme was successfully developed for the catalytic degradation and electrochemical detection of methyl parathion(MP).The ZrO_(2)@ZIF-90 nanozyme with phosphatase hydrolysis activity can convert MP into p-nitrophenol(p-NP).The addition of ZrO_(2)riched in Lewis acid Zr(IV)sites significantly enhanced the phosphatase hydrolysis activity of ZIF-90.ZrO_(2)@ZIF-90 also displayed satisfactory electrocatalytic performance on account of the high surface area,high porosity and powerful enrichment ability of the ZIF-90 and the excellent ion transfer capacity of ZrO_(2).A ZrO_(2)@ZIF-90 nanozyme modified glassy carbon electrode(ZrO_(2)@ZIF-90/GCE)was then fabricated to analyze p-NP formed through MP degradation.Under the optimized conditions,the developed sensor displayed satisfactory analytical performance with a low limit of detection of 0.53μmol/L and two wide linear ranges(3-10 and 10-200μmol/L).ZrO_(2)@ZIF-90 nanozyme accomplished to the degradation and electrochemical detection of MP in river water and spiked fruits.This study identifies a promising new strategy for the design of bifunctional nanozymes for the detection of environmental hazards.

关 键 词：Methyl parathion Organophosphorus pesticides Nanozyme ZrO_(2)@ZIF-90 Electrochemical detection 

分 类 号：O64[理学—物理化学]