Mg-substituted ZnO/CuO composite films: A potential candidate for highly efficient human hydration level monitoring
Yükleniyor...
Dosyalar
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This paper presents an attempt about hydration level monitoring of human sweat using nanostructured ZnO/CuO composite films. Nanostructured bare and alkaline earth metal magnesium (Mg) substituted ZnO/CuO composite films were synthesized by Successive Ionic Layer Adsorption and Reaction (SILAR) method and characterized by Field Emission Scanning Electron Microscopy, Atomic Force Microscopy, X-Ray Diffraction, Ultraviolet-Visible Spectroscopy and hydration level sensing measurements. The struc-tural and morphological analyses exhibited that the main physical properties of the ZnO/CuO composite samples were improved after substitution of magnesium. The ultraviolet-visible spectroscopy analysis presented that the band gap energy of ZnO/CuO films increased about 11 % with substitution of 2.0 % Mg in the ZnO/CuO structure. Sensing response analysis showed promising sensing behavior at room temperature. The Mg-substituted sample showed considerable sensing response for low concentration artificial sweat solution, with improved sensitivity at increased sweat concentration. Since the ZnO/CuO samples are responsive to the artificial sweat 131.00 mM solution (S = 3.12), sensitivity enhances to 9.26 for 2.0 % Mg substituted-ZnO/CuO sample. These enhanced properties were also demonstrated that Mg substituted-ZnO/CuO samples are good candidates to be employed for hydration level monitoring of human sweat. (c) 2021 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Sensing response, Magnesium, ZnO, CuO, Human sweat
Kaynak
Sensors and Actuators A-Physical
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
328
