TY - JOUR
T1 - Use of Cyclea peltata mediated gold nanospheres for adsorptive degradation of methyl green dye
AU - Nayak, Sneha
AU - Goveas, Louella Concepta
AU - Selvaraj, Raja
AU - Mutalik, Srinivas
AU - Sajankila, Shyama Prasad
N1 - Funding Information:
The authors acknowledge Biorender.com for providing the icons for enhancement of aesthetic value of figures.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/12
Y1 - 2022/12
N2 - In this study, gold nanospheres were synthesized due to catalytic reduction of gold ions by phytochemicals of Cyclea peltata leaf extract (CPAuNPs) in 5 h and subsequently used for removal of methyl green (MG) dye. CPAuNPs were characterized by UV–Visible spectrophotometry, scanning electron microscopy (SEM), energy-dispersive X ray spectroscopy (EDAX), Fourier Transformed Infrared Spectroscopy (FT-IR), X-Ray Diffraction (XRD) and BET analysis. CPAuNPs were spherical, of size 25.73–41.69 nm with SPR peak at 543 nm. CPAuNPs were crystalline in nature and could adsorb 86.02 ± 0.12 % of 50 mg/L MG post one factor at a time analysis. Adsorption followed pseudo-second-order kinetics (k1 = 4.43E−03 g/mg.h), was observed as multilayer chemisorption as the equilibrium data best fitted Freundlich isotherm (R2 = 0.856). Upon interaction of MG by CPAuNPs, hydroxylation of MG lead to formation of crystal violet by attack of N-ethyl N N-Dimethyl ammonium group by hydroxide ions, as evident from LCMS chromatograms.
AB - In this study, gold nanospheres were synthesized due to catalytic reduction of gold ions by phytochemicals of Cyclea peltata leaf extract (CPAuNPs) in 5 h and subsequently used for removal of methyl green (MG) dye. CPAuNPs were characterized by UV–Visible spectrophotometry, scanning electron microscopy (SEM), energy-dispersive X ray spectroscopy (EDAX), Fourier Transformed Infrared Spectroscopy (FT-IR), X-Ray Diffraction (XRD) and BET analysis. CPAuNPs were spherical, of size 25.73–41.69 nm with SPR peak at 543 nm. CPAuNPs were crystalline in nature and could adsorb 86.02 ± 0.12 % of 50 mg/L MG post one factor at a time analysis. Adsorption followed pseudo-second-order kinetics (k1 = 4.43E−03 g/mg.h), was observed as multilayer chemisorption as the equilibrium data best fitted Freundlich isotherm (R2 = 0.856). Upon interaction of MG by CPAuNPs, hydroxylation of MG lead to formation of crystal violet by attack of N-ethyl N N-Dimethyl ammonium group by hydroxide ions, as evident from LCMS chromatograms.
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U2 - 10.1016/j.biteb.2022.101261
DO - 10.1016/j.biteb.2022.101261
M3 - Article
AN - SCOPUS:85141788558
SN - 2589-014X
VL - 20
JO - Bioresource Technology Reports
JF - Bioresource Technology Reports
M1 - 101261
ER -