Nickel Hydroxide Nanoparticles for Application in Immunochromatographic Strip Tests of Melamine

Abstract

Nickel hydroxide nanoparticles [Ni(OH) 2-NPs] synthesized by a complexation-precipitation method under hydrothermal conditions were employed as a probe in immunochromatographic strip tests for the selective detection of melamine. The characterization of Ni(OH) 2-NPs and their conjugation to anti-melamine antibody (anti-MEL) were performed using a UVvisible spectrophotometer, Fourier transform infrared (FTIR) spectroscopy, and TEM. On the basis of the green line intensity, the strip test can selectively detect melamine at a minimum concentration of 25 ppm. Our results suggest that this system is promising for the quantitative detection of melamine.

Preparation of nickel foam modified by multiwalled hollow spheres of NiCo2O4 as a promising non-enzymatic glucose sensor

“…Nickel is widely used in catalysts due to its excellent performance as an electrocatalyst. [1][2][3][4][5][6] However, nickel has disadvantages due to its high over potential and poor stability. 7 Combining nickel with cobalt to form spinel NiCo 2 O 4 for use as an electrocatalyst has received major attention in many electrochemical applications, such as water splitting, supercapacitor, and chemical sensing.…”