Síntesis de ZnO vía química verde con extracto de Bauhinia variegata para aplicaciones optoelectrónicas
DOI:
https://doi.org/10.29105/qh12.02-328Keywords:
Química verde, Semiconductor, ZnO, impurezas, wurtzitaAbstract
The synthesis of ZnO powders by a green chemistry method using Bauhinia variegata extract is reported. The compounds
of the extract were used as chemical transfer agents for synthesis. It could be characterized as n-type ZnO wurtzite with a
quasi-spherical particle cluster morphology with average sizes of 70 nm. The analyses allowed to identify impurities of
magnesium in the crystal lattice that was contributed by the extract, as well as possible intrinsic defects caused by the
deformation of calda when Zn2+ is replaced by Mg2+. The photoluminescence of the material implies the possibility that the
material can be used as a photocatalyst since 1t showed a sensitivity to wavelengths of the visible spectrum. It was found
that the synthesized ZnO presents a reduced band gap of 3.11 eV that may be interesting for various optoelectronic
applications.
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