Construction of a 3D Pr-MOF electrochemical sensor and its application for detection and discrimination of nitrobenzyl alcohol isomers

A 3D Pr-MOF: {[Pr(NDC) 1.5 (DMF)(H 2 O)]·(H 2 O)(DMF)} n ( Pr-1 , H 2 NDC=2,6-naphthalenedicarboxylic acid; DMF= N ,N-dimethylformyl) was synthesized by solvothermal method. Pr-1 was studied by thermogravimetry, infrared and powder diffraction experimental methods. The experimental results showed that the chemical properties of Pr-1 were very good, and then Pr-1 was modified on a dry glassy carbon electrode (GCE) to prepare the Pr-1 /GCE sensor, which was applied to the detection of isomers of nitrobenzyl alcohol (NBA). Pr-1 /GCE has good electrochemical properties, and can clearly identify the electrochemical signal identified by NBA isomers. In the environment containing a variety of aromatic ring small molecule interference, Pr-1 can still identify NBA isomers, and has good selection characteristics and anti-interference characteristics.