Decolorization of Azo Dyes by Chemically and Biosynthesized ZnO Nanoparticles

AbstractDrug contamination in water is one of the current fields of study. Since 1990, the presence of drugs in drinking water has been a concern to scientists and public. In Mexico, these organic compounds are not efficiently removed in wastewater treatment plants; therefore, alternative methodologies have been studied that allow these compounds to have a high percentage of degradation or be completely degraded. One example of these techniques is heterogeneous photocatalysis which has obtained positive results in the degradation of drugs using ZnO nanoparticles. These are commonly selected for their electrical characteristics, even though they disperse in water and an additional unit operation is required to separate them from the liquid medium. To eliminate drugs with nano particles in a single stage, polycaprolactone-based membranes with adhered ZnO nanoparticles, by means of electrospinning, were prepared to degrade drugs such as diclofenac. The technique used has shown to efficiently break down diclofenac in 4 hours according to the capillary electrophoresis readings.

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Comparative Study of Pure Zno and Copper Doped Zno Nanoparticles Synthesised via Co-Precipitation Method

ScieXplore International Journal of Research in Science ◽

10.15613/sijrs/2014/v1i2/67542 ◽

2014 ◽

Vol 1 (2) ◽

pp. 73 ◽

Cited By ~ 1

Author(s):

V. Kalaiselvi ◽

N. Jayamani ◽

M. Revathi

Keyword(s):

Comparative Study ◽

Zno Nanoparticles ◽

Precipitation Method ◽

Doped Zno ◽

Co Precipitation

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ANALYSIS OF THE PHYSICAL PROPERTIES AND COMPRESSIBILITY OF ZINC OXIDE (ZnO) NANOPARTICLES AS AN ALTERNATIVE INNOVATION OF THE DENTAL AMALGAM MATERIAL

Nanomechanics Science and Technology An International Journal ◽

10.1615/nanomechanicsscitechnolintj.v4.i3.40 ◽

2013 ◽

Vol 4 (3) ◽

pp. 221-225 ◽

Cited By ~ 1

Author(s):

Poppy Puspitasari

Keyword(s):

Zinc Oxide ◽

Physical Properties ◽

Zno Nanoparticles ◽

Dental Amalgam

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Synthesis and Characterization of Some New Esters Containing Heterocyclic and Derived From Azo Dyes

International Journal of Drug Delivery Technology ◽

10.25258/ijddt.9.2.29 ◽

2019 ◽

Vol 9 (02) ◽

Author(s):

Zena G. Alrecabi ◽

Zainab Amer ◽

Naeemah Al-Lami

Keyword(s):

Schiff Base ◽

13C Nmr ◽

Azo Dyes ◽

Spectral Methods ◽

Anthranilic Acid ◽

Heterocyclic Compounds ◽

Synthesis And Characterization ◽

Cooh Group ◽

Molecular Weights

This study including prepared new colored esters containing heterocyclic with high molecular weights. In the first part of work we synthesized azo dyes [1,2] from the reaction p-toluidine with β-naphthol and o-nitro phenol, thin we synthesized Schiff bases [3,4] by the reaction anthranilic acid with benzaldehyde and dimethyl benzaldehyde. The reaction azo dyes (contain OH group) with Schiff base (contain COOH group) these led to produce the new colored esters [A1-A4]. The second part of work was modification the (C=N-) group in esters to heterocyclic compounds by reacting with phenyl iso cyanide to produce new β-lactam [B1-B4] and with anthranilic acid to get new hydroquinazoline [C1-C4]. All these compounds were characterized by physical properties and spectral methods FTIR, 1H-NMR and 13C-NMR.

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