Optical and microstructural characteristics of CuO thin films by sol gel process and introducing in non-enzymatic glucose biosensor applications
| Autor: | Jorge M. Guerrero-Villalba, Jessica Lillo-Ramiro, G. Gutierrez-Heredia, María de L. Mota-González, Francisco S. Aguirre Tostado, Amanda Carrillo Castillo, Israel Mejía-Silva |
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| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
Spin coating Materials science medicine.diagnostic_test Analytical chemistry Energy-dispersive X-ray spectroscopy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Differential scanning calorimetry 0103 physical sciences medicine Glucose test Electrical and Electronic Engineering Thin film Fourier transform infrared spectroscopy 0210 nano-technology Sol-gel |
| Zdroj: | Optik. 229:166238 |
| ISSN: | 0030-4026 |
| Popis: | In this work, we reported the synthesis of copper oxide (CuO) thin films by sol-gel process assisted by spin coating technique at room temperature. Chemical characterization of CuO precursor solution was determined by Fourier Transformed Infrared Spectroscopy (FTIR) and thermal stability by Thermogravimetric/ Differential Scanning Calorimetry Analysis (TGA/DSC). The influence of variation parameters for the thin films were studied: speed deposition, number of layers and annealing effect on the deposited films. The optical properties of CuO thin films were analyzed using a spectrophotometer (UV–vis-NIR) in a range of 300−1100 nm. The calculated band gap for CuO this films was between 3.35 eV–3.89 eV for as deposited thin films and 2.4 eV–3.6 eV for annealed films. Homogeneous deposited films with monoclinic structure were determined using scanning electron microscopy (SEM) and X-Ray Diffraction respectively. The compositions and homogeneous elemental distributions were analyzed by energy dispersive spectroscopy (EDAX). From the profilometer measurement, the thicknesses of the CuO thin films prepared were found to be ∼1/2−1 μm, depending of speed deposition. Finally, CuO solution precursor and thin films were implemented in a glucose test which showed the formation of gluconic acid by FTIR, indicating the glucose oxidation due to CuO interaction. |
| Databáze: | OpenAIRE |
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