AI Article Synopsis
- L-asparagine functionalized gold nanoparticles (Asp-AuNPs) were synthesized by reducing HAuCl in the presence of L-asparagine at 70 °C for 8 hours, producing spherical nanoparticles of about 13.5 ± 3.7 nm in size.
- Asp-AuNPs demonstrated excellent catalytic properties in degrading various organic dyes, including Rhodamine B, methyl orange, acid red 27, and xylenol orange, particularly in the presence of sodium borohydride.
- The degradation reactions followed pseudo-first order kinetics, with rate constants of 0.904 min, 0.314 min, 0.228 min, and 0.1 min for Rhodamine B,
Article Abstract
L-asparagine functionalized gold nanoparticles (Asp-AuNPs), have been synthesized by reducing HAuCl in presence of L-asparagine at 70 °C for 8 h. Asp-AuNPs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS); the nanoparticles formed were spherical in shape with average size of 13.5 ± 3.7 nm. Synthesized Asp-AuNPs were found to exhibit excellent catalytic properties for the degradation of different organic dyes viz. Rhodamine B (RB), methyl orange (MO), acid red 27 (amaranth) and xylenol orange (XO) in the presence of sodium borohydride (NaBH). Asp-AuNPs acts as electron relay system and serve as effective catalyst for complete degradation of all the tested dyes. Rate kinetic investigations suggested that catalysed degradation reactions follow pseudo-first order reaction kinetics with rate constant of 0.904 min, 0.314 min, 0.228 min and 0.1 min for RB, MO, amaranth and XO respectively.
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| http://dx.doi.org/10.1016/j.saa.2020.118126 | DOI Listing |
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