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Roots of Pennisetum sp. possess the competence to generate nanoparticles of noble metals

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Title Roots of Pennisetum sp. possess the competence to generate nanoparticles of noble metals
 
Creator Yamal, Gupta
Singh, Mani
Pardha-Saradhi, P
Rao, KS
 
Subject Ag-NPs
Au-NPs
Pennisetum glaucum L.
Reducing strength
Root system
 
Description 461-467
Roots of plants have immense reducing potential. Ions of noble metals namely Au3+ and Ag+ get reduced easily to form Au and Ag nanoparticles (NPs), respectively. Therefore, we hypothesize that plant roots could have potential to form Au-NPs and Ag-NPs. For present investigations, plants of Pennisetum glaucum L. were used to evaluate if their roots possess capacity to generate metal NPs. The generation of Au-NPs and Ag-NPs was initially presumed based on colour change, and confirmed by UV-vis spectra, TEM and EDX investigations. Pale yellow Au3+ and colourless Ag+ solutions turned purple and brown, respectively, by roots of Pennisetum sp. within 8 h. Absorption spectra of respective solutions showed plasmon resonance band at 560 nm and 420 nm confirming the presence of Au-NPs and Ag-NPs. TEM coupled with SAED revealed the presence of crystalline spherical NPs in the size range of 5-50 nm in these solutions. EDX further confirmed the presence of Au and Ag as NPs of respective solutions. These results confirmed that the roots of P. glaucum possess ideal reducing strength to generate Au-NPs and Ag-NPs exogenously in the aqueous phase.
 
Date 2022-04-11T06:32:42Z
2022-04-11T06:32:42Z
2022-04
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscair.res.in/handle/123456789/59505
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJBB Vol.59(4) [April 2022]