Startseite Role of the thermal regime in the defect formation of zinc oxide nanostructures prepared by the thermal decomposition process
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Role of the thermal regime in the defect formation of zinc oxide nanostructures prepared by the thermal decomposition process

  • Panuwat Katekaew , Anurak Prasatkhetragarn , Reungruthai Sirirak , Chatdanai Boonruang und Arrak Klinbumrung EMAIL logo
Veröffentlicht/Copyright: 12. Juli 2023
Zeitschrift für Physikalische Chemie
Aus der Zeitschrift Zeitschrift für Physikalische Chemie Band 237 Heft 8

Abstract

The intrinsic defect of ZnO depicts a crucial role in the charge transfer owing to the suppression of the exciton recombination, exhibiting superior semiconducting performance. In this study, the intrinsic defect of ZnO nanostructures prepared by direct thermal activation of 300–900 °C was investigated. X-ray diffraction (XRD) was employed to analyze phase, crystallite size, Zn–O bond length, and dislocation density. The relation of Williamson–Hall (W–H) was used to calculate crystallite size and micro-strain. The atomic coordination was approximated through the Rietveld method. Morphology and crystal growth investigation was carried on by scanning electron microscope (SEM) and tunneling electron microscope (TEM), exhibiting rod-like nanostructures transform to oval shape particle with high residual strain when increasing calcination temperature, exhibiting the crystal growth direction of (101). Specific surface and pore analysis reveals a significant value corresponding to SEM analysis. Fourier transform infrared spectroscopy (FT-IR) detected Zn–O stretching vibration bands, presenting a notable increase in the intensity when heat at 600 °C. Relating to the thermal regime, energy bandgap (Eg) was found to be 3.41–3.50 eV as increasing heat treatment temperatures. Photoluminescence (PL) was applied to determine intrinsic defects through emissive spectra. The surface charge was determined through the zeta potential measurement. The photo-induced dye degradation was measured to understand the effect of the defect in semiconductors. The X-ray photoelectron spectroscopy (XPS) confirms the wurtzite structure appearance, including the intrinsic defects. The observed intrinsic defects are discussed, associating with the structural constants, emissive spectra, cationic dye degradation, and binding energy.

Keywords: intrinsic defects; photoluminescence; thermal decomposition; ZnO nanostructures
Corresponding author: Arrak Klinbumrung, Unit of Excellence on Advanced Materials for Sensors, University of Phayao, Phayao, Thailand; and School of Science, University of Phayao, Phayao, Thailand, E-mail:

Funding source: Chiang Mai University

Award Identifier / Grant number: Unassigned

Acknowledgments

The authors would like to thank the Unit of Excellence on Advanced Materials for Sensors and Scientific Instrument and Product Standard Quality Inspection Center (SIPQC), University of Phayao and Center of Excellence in Materials Science and Technology, Chiang Mai University for general support to this work.

  1. Author contribution: Panuwat Katekaew: Methodology, Formal analysis, Writing – drafting. Reungruthai Sirirak: Formal analysis. Anurak Prasatkhetragarn: Formal analysis. Chatdanai Boonruang: XPS analysis. Arrak Klinbumrung: Conceptualization, Methodology, Formal analysis, Writing – review & editing.

  2. Research funding: This work was funded by the School of Science, University of Phayao (Grant No. PBTSC64027).

  3. Data availability statement: The data presented in this study are available on request from the corresponding author.

  4. Conflict of interest: The authors declare no conflict of interest.

  5. Ethical approval: The work does not require ethical approval as no experiments involving human tissue were performed.

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Received: 2023-03-31
Accepted: 2023-06-11
Published Online: 2023-07-12
Published in Print: 2023-08-28

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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  4. Original Papers
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https://doi.org/10.1515/zpch-2023-0235
Schlagwörter für diesen Artikel
intrinsic defects; photoluminescence; thermal decomposition; ZnO nanostructures

Artikel in diesem Heft

  1. Frontmatter
  2. Review Article
  3. GO-Ag-NPs as a promising agent for biomedical, catalytic, electrochemical detection and water treatment technologies; a comprehensive review
  4. Original Papers
  5. Role of the thermal regime in the defect formation of zinc oxide nanostructures prepared by the thermal decomposition process
  6. Facile synthesis of a ZnO/Fe2O3 heterostructure and its graphene-reinforced composite for boosting the photo-mineralization of crystal violet and phenol
  7. Desulfurization of coal using SnO2/TiO2 nanocomposite immobilized on glass beads under solar light irradiation
  8. Photocatalytic degradation of dyes in aqueous media by gum shellac stabilized selenium nanoparticles
  9. Eco-friendly extraction of cellulose from Ailanthus altissima for nanocellulose production: physico-chemical properties
  10. Inquisition of micellar and surface active properties of gemini surfactants in the presence of a dipeptide
  11. Investigating adsorptive potential of Raphanus caudatus leaves biomass for methyl orange dye: isotherm and kinetic study
  12. Thienylpicolinamidine derivatives as new dissolution inhibitors for carbon steels in HCl medium: experimental and theoretical studies
  13. Extraction and characterization of novel cellulose nanocrystals from Artemisia scoparia straw and their application in hydroxypropyl methyl cellulose (HPMC) films
  14. Synthesis of doped metal sulfide nanoparticles and their graphene reinforced nanohybrid for Pb(II) detection
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