S. D. López-Cabrera, C. A. Calles-Arriaga, E. Rocha-Rangel, M. T. Maldonado-Sada, J. López-Hernández, J. A. Castillo-Robles, W. J. Pech-Rodríguez
{"title":"ZnO mesoscale nanoparticles photoluminescence obtained by green synthesis based on Beaucarnea gracilis","authors":"S. D. López-Cabrera, C. A. Calles-Arriaga, E. Rocha-Rangel, M. T. Maldonado-Sada, J. López-Hernández, J. A. Castillo-Robles, W. J. Pech-Rodríguez","doi":"10.1007/s13204-024-03063-w","DOIUrl":null,"url":null,"abstract":"<div><p>Zinc oxide (ZnO) has been extensively used in areas such as optoelectronics, solar cells, and photocatalysis, among others. Modifying the optical properties of ZnO through different processes can potentially improve the performance of devices based on this material. This work presents the biosynthesis of ZnO by <i>Beaucarnea gracilis</i> leaf extract. The natural extract was mixed with zinc nitrate hexahydrate, Zn(NO<sub>3</sub>)<sub>2</sub>·6H<sub>2</sub>O resulting in a precipitate. Then the precipitate was calcined for 2 h at 400 °C, resulting in a yellowish-ZnO powder. Diffraction laser measurements showed a particle size average of 419 nm. The material exhibited high absorption in the UVA region with photoluminescence at 530 nm. Moreover, from the Tauc plot, a 2.7 eV band gap was obtained. Fourier Transform Infrared (FTIR) spectroscopy results confirmed the ZnO synthesis through 550 cm<sup>−1</sup> and 667 cm<sup>−1</sup> absorption peaks. To the best of our knowledge, this is the first time that ZnO has been synthesized by the endemic plant <i>Beaucarnea gracilis</i>. A major difference with conventional ZnO is significant reduction in the band gap from 3.3 eV to 2.7 eV. Moreover, the material exhibited photoluminescence at 530 nm by exposure to UV light which is attributed to oxygen vacancies. The increase in the optical absorbance in the UV–Visible region and the reduction in the optical band gap could enhance the performance in solar cells based on ZnO and in photocatalysis processes, allowing the use of visible light sources in addition to UV light.</p></div>","PeriodicalId":471,"journal":{"name":"Applied Nanoscience","volume":null,"pages":null},"PeriodicalIF":3.6740,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Nanoscience","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s13204-024-03063-w","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
Zinc oxide (ZnO) has been extensively used in areas such as optoelectronics, solar cells, and photocatalysis, among others. Modifying the optical properties of ZnO through different processes can potentially improve the performance of devices based on this material. This work presents the biosynthesis of ZnO by Beaucarnea gracilis leaf extract. The natural extract was mixed with zinc nitrate hexahydrate, Zn(NO3)2·6H2O resulting in a precipitate. Then the precipitate was calcined for 2 h at 400 °C, resulting in a yellowish-ZnO powder. Diffraction laser measurements showed a particle size average of 419 nm. The material exhibited high absorption in the UVA region with photoluminescence at 530 nm. Moreover, from the Tauc plot, a 2.7 eV band gap was obtained. Fourier Transform Infrared (FTIR) spectroscopy results confirmed the ZnO synthesis through 550 cm−1 and 667 cm−1 absorption peaks. To the best of our knowledge, this is the first time that ZnO has been synthesized by the endemic plant Beaucarnea gracilis. A major difference with conventional ZnO is significant reduction in the band gap from 3.3 eV to 2.7 eV. Moreover, the material exhibited photoluminescence at 530 nm by exposure to UV light which is attributed to oxygen vacancies. The increase in the optical absorbance in the UV–Visible region and the reduction in the optical band gap could enhance the performance in solar cells based on ZnO and in photocatalysis processes, allowing the use of visible light sources in addition to UV light.
期刊介绍:
Applied Nanoscience is a hybrid journal that publishes original articles about state of the art nanoscience and the application of emerging nanotechnologies to areas fundamental to building technologically advanced and sustainable civilization, including areas as diverse as water science, advanced materials, energy, electronics, environmental science and medicine. The journal accepts original and review articles as well as book reviews for publication. All the manuscripts are single-blind peer-reviewed for scientific quality and acceptance.