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A facile synthesis and characterization of Ag, Au and Pt nanoparticles using a natural hydrocolloid gum kondagogu (Cochlospermum gossypium).
Colloids Surf B Biointerfaces. 2011 Apr 01; 83(2):291-8.CS

Abstract

An environmentally benign method for the synthesis of noble metal nanoparticles has been reported using aqueous solution of gum kondagogu (Cochlospermum gossypium). Both the synthesis, as well as stabilization of colloidal Ag, Au and Pt nanoparticles has been accomplished in an aqueous medium containing gum kondagogu. The colloidal suspensions so obtained were found to be highly stable for prolonged period, without undergoing any oxidation. SEM-EDXA, UV-vis spectroscopy, XRD, FTIR and TEM techniques were used to characterize the Ag, Au and Pt nanoparticles. FTIR analysis indicates that -OH groups present in the gum matrix were responsible for the reduction of metal cations into nanoparticles. UV-vis studies showed a distinct surface plasmon resonance at 412 and 525 nm due to the formation of Au and Ag nanoparticles, respectively, within the gum network. XRD studies indicated that the nanoparticles were crystalline in nature with face centered cubic geometry. The noble metal nanoparticles prepared in the present study appears to be homogeneous with the particle size ranging between 2 and 10 nm, as evidenced by TEM analysis. The Ag and Au nanoparticles formed were in the average size range of 5.5±2.5 nm and 7.8±2.3 nm; while Pt nanoparticles were in the size range of 2.4±0.7 nm, which were considerably smaller than Ag and Au nanoparticles. The present approach exemplifies a totally green synthesis using the plant derived natural product (gum kondagogu) for the production of noble metal nanoparticles and the process can also be extended to the synthesis of other metal oxide nanoparticles.

Authors+Show Affiliations

Jonaki, Board of Radiation and Isotope Technology, Department of Atomic Energy, CCMB Campus, Uppal Road, Hyderabad 500 007, Andhra Pradesh, India.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21185161

Citation

Vinod, V T P., et al. "A Facile Synthesis and Characterization of Ag, Au and Pt Nanoparticles Using a Natural Hydrocolloid Gum Kondagogu (Cochlospermum Gossypium)." Colloids and Surfaces. B, Biointerfaces, vol. 83, no. 2, 2011, pp. 291-8.
Vinod VT, Saravanan P, Sreedhar B, et al. A facile synthesis and characterization of Ag, Au and Pt nanoparticles using a natural hydrocolloid gum kondagogu (Cochlospermum gossypium). Colloids Surf B Biointerfaces. 2011;83(2):291-8.
Vinod, V. T., Saravanan, P., Sreedhar, B., Devi, D. K., & Sashidhar, R. B. (2011). A facile synthesis and characterization of Ag, Au and Pt nanoparticles using a natural hydrocolloid gum kondagogu (Cochlospermum gossypium). Colloids and Surfaces. B, Biointerfaces, 83(2), 291-8. https://doi.org/10.1016/j.colsurfb.2010.11.035
Vinod VT, et al. A Facile Synthesis and Characterization of Ag, Au and Pt Nanoparticles Using a Natural Hydrocolloid Gum Kondagogu (Cochlospermum Gossypium). Colloids Surf B Biointerfaces. 2011 Apr 1;83(2):291-8. PubMed PMID: 21185161.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A facile synthesis and characterization of Ag, Au and Pt nanoparticles using a natural hydrocolloid gum kondagogu (Cochlospermum gossypium). AU - Vinod,V T P, AU - Saravanan,P, AU - Sreedhar,B, AU - Devi,D Keerthi, AU - Sashidhar,R B, Y1 - 2010/12/03/ PY - 2010/05/04/received PY - 2010/11/22/revised PY - 2010/11/25/accepted PY - 2010/12/28/entrez PY - 2010/12/28/pubmed PY - 2011/4/26/medline SP - 291 EP - 8 JF - Colloids and surfaces. B, Biointerfaces JO - Colloids Surf B Biointerfaces VL - 83 IS - 2 N2 - An environmentally benign method for the synthesis of noble metal nanoparticles has been reported using aqueous solution of gum kondagogu (Cochlospermum gossypium). Both the synthesis, as well as stabilization of colloidal Ag, Au and Pt nanoparticles has been accomplished in an aqueous medium containing gum kondagogu. The colloidal suspensions so obtained were found to be highly stable for prolonged period, without undergoing any oxidation. SEM-EDXA, UV-vis spectroscopy, XRD, FTIR and TEM techniques were used to characterize the Ag, Au and Pt nanoparticles. FTIR analysis indicates that -OH groups present in the gum matrix were responsible for the reduction of metal cations into nanoparticles. UV-vis studies showed a distinct surface plasmon resonance at 412 and 525 nm due to the formation of Au and Ag nanoparticles, respectively, within the gum network. XRD studies indicated that the nanoparticles were crystalline in nature with face centered cubic geometry. The noble metal nanoparticles prepared in the present study appears to be homogeneous with the particle size ranging between 2 and 10 nm, as evidenced by TEM analysis. The Ag and Au nanoparticles formed were in the average size range of 5.5±2.5 nm and 7.8±2.3 nm; while Pt nanoparticles were in the size range of 2.4±0.7 nm, which were considerably smaller than Ag and Au nanoparticles. The present approach exemplifies a totally green synthesis using the plant derived natural product (gum kondagogu) for the production of noble metal nanoparticles and the process can also be extended to the synthesis of other metal oxide nanoparticles. SN - 1873-4367 UR - https://www.unboundmedicine.com/medline/citation/21185161/A_facile_synthesis_and_characterization_of_Ag_Au_and_Pt_nanoparticles_using_a_natural_hydrocolloid_gum_kondagogu__Cochlospermum_gossypium__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0927-7765(10)00666-1 DB - PRIME DP - Unbound Medicine ER -