Issue 8, 2020

The synthesis of a Cu0.8Zn0.2Sb2–polyacrylamide nanocomposite by frontal polymerization for moisture and photodetection performance

Abstract

Herein, the preparation of a Cu0.8Zn0.2Sb2AAm–polymer nanocomposite synthesized via a frontal polymerization technique is reported, together with its humidity sensing and photoconductive behaviour. The surface texture was examined using scanning electron microscopy (SEM) analysis. X-ray diffraction (XRD) and transmission electron microscopy (TEM) studies confirm the crystallinity of the as-fabricated nanocomposite thin film based sensing element. The surface area, particle size, optical absorbance, and thermal stability of the as-fabricated thin film were successively investigated using Brunauer–Emmett–Teller (BET) analysis, particle size analysis, ultra-violet absorption studies, Fourier-transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and differential scanning calorimetric (DSC) analysis. The humidity sensing characteristics were also investigated based on the capacitive performance of Cu0.8Zn0.2Sb2AAm film when exposed to moisture. The average sensitivity (S) of the as-fabricated sensor was found to be ∼168.477 pF/% RH at an optimum frequency of 20 Hz. The sensor exhibited rapid response and recovery times of 4.6 s and 5.6 s, respectively, with persistent stability of 96% after 60 d. Thus, the Cu0.8Zn0.2Sb2AAm polymer-based capacitive humidity sensor shows its potential for reliable and safe use in the detection of humidity levels, as well as for photoconduction.

Graphical abstract: The synthesis of a Cu0.8Zn0.2Sb2–polyacrylamide nanocomposite by frontal polymerization for moisture and photodetection performance

Article information

Article type
Paper
Submitted
08 Jun 2020
Accepted
22 Sep 2020
First published
23 Sep 2020
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2020,1, 2804-2817

The synthesis of a Cu0.8Zn0.2Sb2–polyacrylamide nanocomposite by frontal polymerization for moisture and photodetection performance

P. Chaudhary, D. K. Maurya, R. K. Tripathi, B. C. Yadav, N. D. Golubeva, E. I. Knerelman, I. E. Uflyand and G. I. Dzhardimalieva, Mater. Adv., 2020, 1, 2804 DOI: 10.1039/D0MA00389A

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