Photocatalytic activity of biosynthesized ZnO Nanostructures from Tilia extract against methylene blue, a water pollutant
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Keywords:
ZnO nanostructures, Tilia, Photocatalytic activity, Water pollutant, Methylene blueAbstract
Numerous azo dyes, such as methylene blue, can trigger allergic responses and cancer. Most of
these dyes are not biodegradable, harmful to the environment, and carcinogenic. Several techniques have
been documented to eliminate these dyes, including oxidation through chemical action and reverse
osmosis. These methods employ waste-producing, expensive, or non-biodegradable substances. To
overcome this obstacle, inexpensive, non-toxic nanoparticles with potent photocatalytic activity for dye
removal must be developed. It has been demonstrated that ZnO nanoparticles are efficient photocatalysts
for the degradation of organic dyes due to their large surface area, high stability, and high electron
binding energy. Tilia is indigenous to Western Asia and Europe. Flavonoids, mucilage, essential oil,
phenolic acids, amino acids, and other substances are among its primary active components. Tilia flowers
are used as an expectorant, to treat colds, and to relieve muscle spasms. In this research, zinc acetate and
zinc nitrate were used as two different zinc sources in the synthesis of ZnO nanoparticles and Tilia extract
was used as green stabilizer. The photocatalytic activity of the obtained nanoparticles against methylene
blue dye under UV light was investigated and it was found that they showed excellent degradation
activity of 99% and 91% for zinc acetate and zinc nitrate, respectively, after 180 min of UV illumination.
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