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Green Synthesis of Silver Nanoparticles Using Tea Leaves from Three Different Elevations
Author(s) -
Chandra Abhishek,
Bhattarai Ajaya,
Yadav Ashok K.,
Adhikari Janak,
Singh Man,
Giri Basant
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201904826
Subject(s) - silver nanoparticle , aqueous solution , camellia sinensis , pulmonary surfactant , mercury (programming language) , chemistry , bromide , nanoparticle , detection limit , nuclear chemistry , green tea , metal ions in aqueous solution , ion , nanotechnology , botany , materials science , chromatography , food science , inorganic chemistry , organic chemistry , biology , biochemistry , computer science , programming language
Green synthesis of nanoparticles offers numerous advantages over the conventional methods. This work provides a comprehensive understanding on the effect of tea cultivation elevation on the formation of silver nanoparticles (AgNPs) using green tea ( Camellia Sinensis ) leaves. The green tea leaves were collected from three different elevations: 86, 1700, and 2000 m above sea level in eastern Nepal. We found that AgNPs synthesized using tea leaves from 1700 m were homogeneously dispersed and smallest size, when compared to AgNPs synthesized using tea leaves from remaining two elevations. All aqueous dispersed AgNPs were sensitive towards mercury (II) ion over a range of other metal ions tested. However, the AgNPs synthesized using tea leaves from 1700 m resulted in better detection limit of 9.79 μM for sensing mercury (II) ions. Interestingly, the nanoparticles when additionally stabilized in aqueous trimethyloctylammonium bromide, a cationic surfactant among seven other surfactants tested, improved the detection limit to 0.71 μM.