Multipod ZnO Nanoforms: Low Temperature Synthesis and Characterization

2007 ◽  
Vol 7 (2) ◽  
pp. 689-695 ◽  
Author(s):  
Tandra Ghoshal ◽  
Soumitra Kar ◽  
Subhajit Biswas ◽  
Gautam Majumdar ◽  
Subhadra Chaudhuri
Keyword(s):  
Low Temperature ◽  
Field Emission ◽  
Cross Section ◽  
Thermal Evaporation ◽  
Synthesis And Characterization ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
Optical Absorbance ◽  
Higher Temperature ◽  
Emission Studies

ZnO nanotetrapods were synthesized by a simple thermal evaporation of Zn powder at a relatively low temperature ∼600 °C. The tetrapods have four legs with hexagonal cross-section. Interpenetrating growth was observed in some of these nanotetrapods. Multipod ZnO nanoforms were produced at higher temperature. The optical characterizations such as optical absorbance, photoluminescence and Raman spectroscopy reveal excellent crystal qualities of these nanoforms. The field emission studies indicated that these nanoforms could be utilized in field emission based devices.

scholarly journals Low temperature synthesis and characterization of Mn3O4 nanoparticles

2007 ◽  
Vol 5 (1) ◽  
pp. 169-176 ◽  
Author(s):  
Abdülhadi Baykal ◽  
Yüksel Köseoğlu ◽  
Mehmet Şenel
Keyword(s):  
Particle Size ◽  
Infrared Spectroscopy ◽  
Low Temperature ◽  
Synthesis And Characterization ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
X Ray ◽  
Peak Broadening ◽  
Mn3o4 Nanoparticles

AbstractHeating hydrous manganese (II) hydroxide gel at 85 °C for 12 hours produces Mn3O4 nanoparticles. They were characterized by X-ray powder diffraction (XRD) and infrared spectroscopy (FTIR). The particle size estimated from the SEM and X-ray peak broadening is approximately 32 nm, showing them to be nanocrystalline. EPR measurements confirm a typical Mn2+signal with a highly resolved hyperfine structure.

LOW-TEMPERATURE SYNTHESIS OF NOVEL ZINC OXIDE SINGLE-SIDED COMB-LIKE STRUCTURE

2006 ◽  
Vol 05 (02n03) ◽  
pp. 207-212
Author(s):  
YAOHUA ZHANG ◽  
JUAN LIU ◽  
TONG LIU ◽  
XINGGUO LI
Keyword(s):  
Zinc Oxide ◽  
Low Temperature ◽  
Thermal Evaporation ◽  
Growth Direction ◽  
Device Fabrication ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
Low Temperature Process

Single-sided ZnO nanocombs have been synthesized by thermal evaporation of Zn powders at 440°C through a vapor–solid (VS) process. The stem ribbon of the as-synthesized nanocomb takes a growth direction of [Formula: see text], and its top/bottom surfaces are [Formula: see text]. The nanoteeth grow epitaxially out of the stem ribbon along [0001]. Such a low temperature process may be useful in future device fabrication.

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