Syntheses of Mesoporous ZnO and SnO₂ Microspheres by Spray Reaction Process

Abstract:

For the first time, mesoporous ZnO and SnO₂ spherical particles were synthesized by spray reaction (SR) process. The synthesized materials were characterized by thermo-gravimetry/differential thermal analysis (TG/DTA), scanning electron microscopy (SEM), and X-ray diffraction (XRD). Results reveal that few ZnO microspheres were formed after calcined at 700 °C while large quantity of non-spherical ZnO particles was produced. And the predominant hexagonal ZnO (h-ZnO) is attained when heated at 700 °C. Mesoporous SnO₂ microspheres prepared at 800 °C possess an average size ~2.22 μm and a major tetragonal phase (t- SnO₂) with crystallite size 7.8 nm.

• Periodical: Key Engineering Materials (Volume 519)
• Pages: 74-78
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.519.74
• Online since: July 2012
• Authors: Hui Zhang, Chen Chen, Xiao Long Xu, Rong Wu, Fan Li, Mei Zhang
• Keywords: Mesopores, SnO₂ Microspheres, Spray Reaction Process, Synthesis, ZnO Microsphere

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