Open AccessSynthesis of Highly Dispersed CuPd@UiO-66-NH2 for Nonenzymatic Hydrazine Sensing
Author(s) -
Mengmeng Xu,
Yuhua Dong,
Jianbin Zheng
Publication year - 2021
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac0224
Subject(s) - materials science , electrochemical gas sensor , particle size , electrochemistry , hydrazine (antidepressant) , particle (ecology) , analytical chemistry (journal) , transmission electron microscopy , spectroscopy , dispersion (optics) , scanning electron microscope , composite number , detection limit , nanoparticle , chemical engineering , electrode , nanotechnology , chemistry , composite material , optics , organic chemistry , oceanography , physics , chromatography , quantum mechanics , engineering , geology
In this article, a core–shell CuPd@UiO-66-NH 2 composite material was synthesized by a double-solvent reduction method, and an N 2 H 4 electrochemical sensor based on CuPd@UiO-66-NH 2 was constructed. The relationship between the morphology, type, composition, size of the sensor interface composite material and its electrocatalytic performance and sensor response performance was studied, and a new method for detecting N 2 H 4 was established. The surface properties and composition of the materials were studied by transmission electron microscope(TEM),energy dispersive X-ray spectroscopy(EDX) and X-ray diffraction spectroscopy(XRD). The results showed that the synthesized CuPd@UiO-66-NH 2 has a regular 3D structure, particle dispersion, and uniform particle size, the particle size is about 90 nm. Electrochemical performance studies showed the sensor is made into detecting N 2 H 4 in a linear range of 0.25 μ M ∼ 1.39 mM, with a sensitivity of 386.7 μ A·mM −1 ·cm −2 , and a detection limit of 0.08 μ M(S/N = 3). Compared with other electrochemical sensors based on metal nanoparticles to detect N 2 H 4 , the new sensor exhibited a wider linear range; and its sensitivity was 3 times of that obtained by the Cu-BTC/OMC/GCE. So, the sensor can be used as a potential sensing material to detect hydrazine.