Work

Amine-Functionalized Silane-Assisted Preparation of AgNP-Deposited α‑Ni(OH)2 Composite Materials and Their Application in Hg2+ Ion Sensing

Year: 2022

Type: article

Abstract: A facile synthetic methodology for the deposition of different concentrations of Ag nanoparticles (AgNPs) on α-Ni(OH)2 sheets (α-Ni1(OH)2-Ag0.5, α-Ni1(OH)2-Ag1, α-Ni1(OH)2-Ag2, and α-Ni1(OH)2-Ag3) is reported using N-[3-(trimethoxysilyl)propyl]diethylenetriamine (TPDT) silane. The TPDT aminosilane facilitates the formation of α-Ni(OH)2 sheets and reduces the Ag+ precursor to AgNPs, leading to the deposition of AgNPs on α-Ni(OH)2 sheets. UV–vis absorption spectroscopy, transmission microscopy analyses, X-ray photoelectron spectroscopy, X-ray diffraction, and attenuated total reflectance–Fourier transform infrared spectroscopy techniques were used to characterize the prepared α-Ni1(OH)2-Ag0.5–3 composite materials. High-angle annular dark-field scanning transmission electron microscopy–energy-dispersive X-ray spectroscopy mapping images and scanning electron microscopy–energy-dispersive X-ray spectroscopy mapping images were recorded to understand the α-Ni1(OH)2-Ag composite sheet materials. The optical sensing property of α-Ni1(OH)2-Ag0.5–3 composite materials toward toxic Hg2+ ions were investigated using a UV–vis absorption spectroscopy technique. The α-Ni1(OH)2-Ag2 composite material showed selective sensing behavior.

Source: ACS Omega

DOI: 10.1021/acsomega.2c05812

Authors: Manickam Sundarapandi, Raju Praveen, Sivakumar Shanmugam, Ramasamy Ramaraj

Institution: Madurai Kamaraj University

Language: English

Topic: Gold and Silver Nanoparticles Synthesis and Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,250

Funders: Council of Scientific and Industrial Research, India, Department of Atomic Energy, Government of India, Madurai Kamaraj University, Central ElectroChemical Research Institute