In this work we present a systematic study of ZnO micro and nanostructures grown by spray pyrolysis (SP) and by physical vapour transport (PVT) on glass and c-sapphire substrates at low temperatures. Optimised growth conditions have allowed to obtain homogeneous ZnO nanolayers composed of quasi-spherical nanoparticles in the range 2 to 8 nm by spray pyrolysis, while by PVT the selected growth conditions allow to produce a wide variety of morphologies (tripods, grains, arrows and wires) of nano and microsize dimension. Grazing incidence X-ray diffraction, field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and energy dispersive X-ray spectroscopy (EDX) were used as characterization techniques in the investigation of structural, morphological and compositional nature of these nanostructures in relation with the growth method.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1166/jnn.2012.4537 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cr-Doped Nanocrystalline TiO-CrO Nanocomposites with p-p Heterojunction as a Stable Gas-Sensitive Material.
Int J Mol Sci
January 2025
Chemistry Department, Lomonosov Moscow State University, 119991 Moscow, Russia.
Nanocrystalline TiO is a perspective semiconductor gas-sensing material due to its long-term stability of performance, but it is limited in application because of high electrical resistance. In this paper, a gas-sensing nanocomposite material with p-p heterojunction is introduced based on p-conducting Cr-doped TiO in combination with p-conducting CrO. Materials were synthesized via a single-step flame spray pyrolysis (FSP) technique and comprehensively studied by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) specific surface area analysis, transition electron microscopy (TEM), energy dispersive X-ray (EDX) spectroscopy, X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and Raman spectroscopy.
View Article and Find Full Text PDFSimultaneous regulation of grain size and interface of single-crystal ultrahigh-nickel LiNiCoMnO via one-step LiZrO coating.
J Colloid Interface Sci
January 2025
Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China; Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing 100084, China; Beijing Key Lab of Fine Ceramics, Tsinghua University, Beijing 100084, China. Electronic address:
Single-crystal ultrahigh-nickel LiNiCoMnO (NCM) materials are recognized for significant potential in the development of high-performance lithium-ion batteries, primarily owing to their higher energy density and superior cycling performance compared to polycrystalline counterparts. However, these materials require high calcination temperatures, suffer from significant lithium/nickel mixing, and face challenges in composition control. Although high-activity oxide precursors prepared via spray pyrolysis can reduce calcination temperatures, the smaller particle size of the resulting NCM materials intensifies interfacial side reactions.
View Article and Find Full Text PDFThe Effect of H Fluence Irradiation on the Optical, Structural, and Morphological Properties of ZnO Thin Films.
Materials (Basel)
December 2024
Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico.
Polycrystalline zinc oxide (ZnO) thin films were deposited on soda-lime glass substrates using the chemical spray pyrolysis method at 450 °C. The samples were irradiated with 8 keV H ions at three different fluences using a Colutron ion gun. The effects of the irradiation on the structural, morphological, and optical properties were studied with different techniques, including Rutherford Backscattering Spectrometry (RBS), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and Ultraviolet and Visible Spectroscopy (UV-Vis).
View Article and Find Full Text PDFInvestigations on the synthesis and characterization of silver-doped MoO thin films for photocatalytic applications.
Sci Rep
January 2025
Laboratoire de Physique de la Matière Condensée, Faculté des Sciences de Tunis, Université de Tunis El Manar, Tunis, 2092, Tunisia.
In this study, we aimed to enhance the photocatalytic performance of molybdenum oxide (MoO) thin films by doping with silver (Ag) via a spray pyrolysis technique. The primary objective for silver incorporation was intended to introduce additional energy levels into the band structure of MoO, improving its efficiency. Structural, optical, and photocatalytic properties were analyzed using X-ray diffraction (XRD) and optical spectroscopy.
View Article and Find Full Text PDFOne-step spray pyrolysis synthesis of ZnO/Ag hollow spheres for enhanced visible-light-driven antibacterial applications and wound healing.
Dalton Trans
January 2025
Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Third Hospital of Shanxi Medical University, Tongji Shanxi Hospital, Taiyuan, 030032, China.
Article Synopsis
- ZnO/Ag hollow particles were created using a one-step spray pyrolysis method to improve antibacterial activity and promote wound healing.
- The materials were characterized through techniques like XRD, TEM, and XPS, confirming their hollow structure and even distribution of silver nanoparticles, which enhance light absorption due to their unique properties.
- Antibacterial tests showed that these composites were significantly more effective against bacteria, including MRSA, under visible light, as further analyzed by EPR spectroscopy which indicated the generation of reactive oxygen species contributing to their antibacterial action.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!