Investigating How Cu Addition Affects the Gas Sensing, Electrical, Optical and Structural Properties of ZnO Nanoparticles
In this study, we report the morphological and microstructural characteristics (phase, crystallinity, morphology, surface functional groups) as well as the optical, electrical and gas sensing properties of pristine ZnO and Cu-doped ZnO nanoparticles prepared by a simple sol-gel method. Field Emissio...
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| Format: | Article |
| Language: | English |
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Iranian Chemical Society
2024-06-01
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| Series: | Nanochemistry Research |
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| Online Access: | http://www.nanochemres.org/article_197831_ef3dd9b8afb969606404e1a22f863071.pdf |
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| author | Fatemeh Moosavi Giovanni Neri |
| author_facet | Fatemeh Moosavi Giovanni Neri |
| author_sort | Fatemeh Moosavi |
| collection | DOAJ |
| description | In this study, we report the morphological and microstructural characteristics (phase, crystallinity, morphology, surface functional groups) as well as the optical, electrical and gas sensing properties of pristine ZnO and Cu-doped ZnO nanoparticles prepared by a simple sol-gel method. Field Emission scanning electron microscopy (FE-SEM) showed that the nanoparticles were well synthesized, and their size was in the nanometer range. X-ray diffraction analysis of the synthesized nanoparticles displayed a hexagonal wurtzite crystalline arrangement with a grain size distribution of 21.2 nm for the pure- and 17.5 nm for Cu doped-ZnO. The FT-IR spectra showed a successful substitution of Cu ions in the ZnO lattice. The UV-vis spectroscopy exhibited a red shift in the absorption edge, indicating that the band gap energy decreased from 3.37 to 3.26 eV with Cu doping. The gas sensing nanoparticles were tested for their ability to detect ethanol and acetone in air at different temperatures. The results showed that the pristine ZnO gas sensor displayed a greater response to both gases at the low concentration of 10 ppm. On the basis of the obtained results, the fundamental sensing mechanism on these sensors is discussed in detail. |
| format | Article |
| id | doaj-art-c65489ac8d714f96b17f50f20d979d91 |
| institution | Kabale University |
| issn | 2538-4279 2423-818X |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Iranian Chemical Society |
| record_format | Article |
| series | Nanochemistry Research |
| spelling | doaj-art-c65489ac8d714f96b17f50f20d979d912025-01-12T10:25:14ZengIranian Chemical SocietyNanochemistry Research2538-42792423-818X2024-06-019319720610.22036/ncr.2024.03.003197831Investigating How Cu Addition Affects the Gas Sensing, Electrical, Optical and Structural Properties of ZnO NanoparticlesFatemeh Moosavi0Giovanni Neri1Department of materials science and engineering, Shiraz University, Shiraz, Iran.Department of Engineering, University of Messina, Messina, Italy.In this study, we report the morphological and microstructural characteristics (phase, crystallinity, morphology, surface functional groups) as well as the optical, electrical and gas sensing properties of pristine ZnO and Cu-doped ZnO nanoparticles prepared by a simple sol-gel method. Field Emission scanning electron microscopy (FE-SEM) showed that the nanoparticles were well synthesized, and their size was in the nanometer range. X-ray diffraction analysis of the synthesized nanoparticles displayed a hexagonal wurtzite crystalline arrangement with a grain size distribution of 21.2 nm for the pure- and 17.5 nm for Cu doped-ZnO. The FT-IR spectra showed a successful substitution of Cu ions in the ZnO lattice. The UV-vis spectroscopy exhibited a red shift in the absorption edge, indicating that the band gap energy decreased from 3.37 to 3.26 eV with Cu doping. The gas sensing nanoparticles were tested for their ability to detect ethanol and acetone in air at different temperatures. The results showed that the pristine ZnO gas sensor displayed a greater response to both gases at the low concentration of 10 ppm. On the basis of the obtained results, the fundamental sensing mechanism on these sensors is discussed in detail.http://www.nanochemres.org/article_197831_ef3dd9b8afb969606404e1a22f863071.pdfznocudopingelectrical propertiesgas sensing |
| spellingShingle | Fatemeh Moosavi Giovanni Neri Investigating How Cu Addition Affects the Gas Sensing, Electrical, Optical and Structural Properties of ZnO Nanoparticles Nanochemistry Research zno cu doping electrical properties gas sensing |
| title | Investigating How Cu Addition Affects the Gas Sensing, Electrical, Optical and Structural Properties of ZnO Nanoparticles |
| title_full | Investigating How Cu Addition Affects the Gas Sensing, Electrical, Optical and Structural Properties of ZnO Nanoparticles |
| title_fullStr | Investigating How Cu Addition Affects the Gas Sensing, Electrical, Optical and Structural Properties of ZnO Nanoparticles |
| title_full_unstemmed | Investigating How Cu Addition Affects the Gas Sensing, Electrical, Optical and Structural Properties of ZnO Nanoparticles |
| title_short | Investigating How Cu Addition Affects the Gas Sensing, Electrical, Optical and Structural Properties of ZnO Nanoparticles |
| title_sort | investigating how cu addition affects the gas sensing electrical optical and structural properties of zno nanoparticles |
| topic | zno cu doping electrical properties gas sensing |
| url | http://www.nanochemres.org/article_197831_ef3dd9b8afb969606404e1a22f863071.pdf |
| work_keys_str_mv | AT fatemehmoosavi investigatinghowcuadditionaffectsthegassensingelectricalopticalandstructuralpropertiesofznonanoparticles AT giovannineri investigatinghowcuadditionaffectsthegassensingelectricalopticalandstructuralpropertiesofznonanoparticles |