Hierarchical Cu 3 V 2 O 8 /Cu 6 Mo 5 O 18 /MXene nanostructures by ultrathin nanosheets for highly sensitive electrochemical detection of organophosphorus pesticides

被引：0

作者：

Guo, Wei ^{[1
]}

Chen, Zhiyu ^{[1
]}

Zhao, Yaxu ^{[1
]}

Zhao, Congyi ^{[1
]}

Lu, Xiong ^{[1
]}

Gao, Faming ^{[1
]}

机构：

[1] Tianjin Univ Sci & Technol, Tianjin Key Lab Multiplexed Identificat Port Hazar, State Key Lab Food Nutr & Safety, Tianjin 300457, Peoples R China

来源：

MICROCHEMICAL JOURNAL | 2024年 / 201卷

基金：

中国国家自然科学基金;

关键词：

Copper base oxide; MXene nanosheets; Hierarchical structure; Enzyme biosensor; Pesticides; METAL-ORGANIC FRAMEWORK; REDUCED GRAPHENE OXIDE; ACETYLCHOLINESTERASE BIOSENSOR; CARBON; NANOPARTICLES; OXIDATION; ELECTRODE; ELECTROCATALYSTS; NANOCOMPOSITES; NANOMATERIALS;

D O I：

10.1016/j.microc.2024.110601

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Transition -metal oxides (TMOs) with hierarchical nanostructures derived from metal organic frameworks (MOFs) were widely applied in electrochemical investigation. In this paper, a rational synthesis strategy of TMOs with specific nanostructures and multiple components was reported. Three-dimensional (3D) CuMoV layered metal hydroxides (CuMoV LDHs) architecture was prepared by mild and facile wet -chemistry process to reshape Cu-MOF surface and realize the self-templated conversion. After thermal annealing, hierarchical CuMoV LDHs were transformed to polynary Cu 3 V 2 O 8 /Cu 6 Mo 5 O 18 (CMVO) compounds. Based on the electrostatic attraction, CMVO/MXene (CMVON) compounds were assembled by combining the CMVO and few -layer Nb 2 CT x MXene (fNb 2 C) nanosheets and employed as modified materials on the electrode surface. Benefiting from the superior electronic conductivity, large surface area and shortened ion diffusion pathway, the CMVON hybrids demonstrated excellent electrochemical sensing properties. Upon optimum conditions, the constructed CMVON based AChE biosensor manifested markedly analytical performance with the low limit of detection (LOD) and wide linear ranges for parathion -methyl, malathion, and fenitrothion detection.

引用

页数：12