TY - JOUR
T1 - Bio-functionalized silver nanoparticles for selective colorimetric sensing of toxic metal ions and antimicrobial studies
AU - Vinod Kumar, V.
AU - Anbarasan, S.
AU - Christena, Lawrence Rene
AU - Saisubramanian, Nagarajan
AU - Philip Anthony, Savarimuthu
N1 - Funding Information:
Financial supports from Department of Science and Technology, New Delhi, India (DST Fast Track Scheme No. SR/FT/CS-03/2011(G) is acknowledged with gratitude.
PY - 2014/8/14
Y1 - 2014/8/14
N2 - Hibiscus Sabdariffa (Gongura) plant extracts (leaves (HL) and stem (HS)) were used for the first time in the green synthesis of bio-functionalized silver nanoparticles (AgNPs). The bio-functionality of AgNPs has been successfully utilized for selective colorimetric sensing of potentially health and environmentally hazardous Hg2+, Cd2+ and Pb2+ metal ions at ppm level in aqueous solution. Importantly, clearly distinguishable colour for all three metal ions was observed. The influence of extract preparation condition and pH were also explored on the formation of AgNPs. Both selectivity and sensitivity differed for AgNPs synthesized from different parts of the plant. Direct correlation between the stability of green synthesized AgNPs at different pH and its antibacterial effects has been established. The selective colorimetric sensing of toxic metal ions and antimicrobial effect of green synthesized AgNPs demonstrated the multifunctional applications of green nanotechnology.
AB - Hibiscus Sabdariffa (Gongura) plant extracts (leaves (HL) and stem (HS)) were used for the first time in the green synthesis of bio-functionalized silver nanoparticles (AgNPs). The bio-functionality of AgNPs has been successfully utilized for selective colorimetric sensing of potentially health and environmentally hazardous Hg2+, Cd2+ and Pb2+ metal ions at ppm level in aqueous solution. Importantly, clearly distinguishable colour for all three metal ions was observed. The influence of extract preparation condition and pH were also explored on the formation of AgNPs. Both selectivity and sensitivity differed for AgNPs synthesized from different parts of the plant. Direct correlation between the stability of green synthesized AgNPs at different pH and its antibacterial effects has been established. The selective colorimetric sensing of toxic metal ions and antimicrobial effect of green synthesized AgNPs demonstrated the multifunctional applications of green nanotechnology.
KW - AgNPs colorimetric sensor
KW - Biosynthesis of AgNPs
UR - http://www.scopus.com/inward/record.url?scp=84897969819&partnerID=8YFLogxK
U2 - 10.1016/j.saa.2014.03.020
DO - 10.1016/j.saa.2014.03.020
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C2 - 24717716
AN - SCOPUS:84897969819
SN - 1386-1425
VL - 129
SP - 35
EP - 42
JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
ER -