Publications (2)3.07 Total impact
-
Article: High yield synthesis of intrinsic, doped and composites of nano-zinc oxide using novel combinatorial method.
[show abstract] [hide abstract]
ABSTRACT: A novel synthesis of the production of luminescent zinc oxide (ZnO), either in its intrinsic, metal, non-metal-doped or composite forms with high yield has been developed by parallel iterative techniques, within a combinatorial library prepared by the reduction of nitroarenes. The reduction of nitroarenes by aluminium/zinc dusts in alkaline medium (pH 10±2) forms azoxy compounds, whereas in acidic medium (pH 4.9±0.2) forms phenyl hydroxylamine and zinc/aluminium dust gets oxidised into respective hydroxide. Here, we demonstrate the reduction of nitroarenes at neutral pH (7.0±0.2), which forms intrinsic as well as doped ZnO at 50±5°C using zinc dust alone or mixtures of salts of several transition and non-transition metals in presence of 1:10 ratio of solvent and water. Interestingly, it is observed that the photoluminescence emission could be tuned in a wide range from 390 to 615 nm useful for many display related devices.Journal of Colloid and Interface Science 12/2011; 369(1):40-5. · 3.07 Impact Factor -
Conference Proceeding: Structural and Spectroscopic Investigations of Nanocrystalline Zinc Oxide
[show abstract] [hide abstract]
ABSTRACT: Zinc oxide powder samples have been synthesized by wet chemical method at room temperature. The synthesized material is polycrystalline ZnO with wurtzite structure and has rod shaped particles (hexagonal-prism like). Crystallite size, microstrain, morphology and vibrational modes have been studied by XRD, SEM and FT Raman spectroscopic techniques and the characteristics have been discussed in comparison with the bulk zinc oxide. Index Terms—hexagonal prisms, size and microstrain, vibrational modes, zinc oxide.XV International Workshop on the Physics of Semiconductor devices 2009, JMI New Delhi, India; 12/2009
