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Unique morphologies of zinc oxide synthesized by thermal decomposition and co‐precipitation routes: Ultraviolet absorption and luminescence characteristics
Author(s) -
Waqas Hassan,
Salman Muhammad Saad,
Riaz Asim,
Riaz Naeem,
Shabbir Saima
Publication year - 2015
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201400484
Subject(s) - wurtzite crystal structure , luminescence , materials science , thermal decomposition , photoluminescence , chemical engineering , zinc , hexamethylenetetramine , nanoparticle , zinc nitrate , precipitation , absorption spectroscopy , fourier transform infrared spectroscopy , absorption (acoustics) , nanotechnology , chemistry , composite material , optics , organic chemistry , physics , optoelectronics , meteorology , engineering , metallurgy
Two facile and efficient methods, to synthesize zinc oxide (ZnO) particles with different morphologies, have been reported here. Thermal decomposition route yielded micron sized irregular shaped ZnO particles. While co‐precipitation method rendered transparent flakes which then transformed to hexagonal discs with relatively more uniform size and shape. These hexagonal discs were further converted to the cone type morphology when hexamethylenetetramine was added in the precursor solution. However, spherical type ZnO nanoparticles were obtained by incorporating polyvinyl alcohol during co‐precipitation strategy. XRD confirmed the formation of wurtzite structure in all the samples. FTIR spectroscopy revealed the presence of ZnO characteristic peaks. Moreover, 3‐D directional growths and the presence of UV‐Vis broadband multi‐absorption peaks, and green to orange photoluminescence emissions confirmed the potential application of the synthesized ZnO particles in various piezoelectric and luminescence applications.