Waste Banana Stem Utilized for Biosynthesis of Silver and Gold Nanoparticles and Their Antibacterial and Catalytic Prope
- PDF / 4,855,390 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 95 Downloads / 167 Views
(0123456789().,-volV)(0123456789(). ,- volV)
ORIGINAL PAPER
Waste Banana Stem Utilized for Biosynthesis of Silver and Gold Nanoparticles and Their Antibacterial and Catalytic Properties Van-Dat Doan1 • Van-Tan Le1 • Thanh-Long Phan1 • Thi Lan-Huong Nguyen2 • Thanh-Danh Nguyen3,4 Received: 16 August 2020 / Accepted: 30 October 2020 Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The present work presented a synthesis of silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) using the aqueous extract of waste banana stem (WBS), Musa paradisiaca Linn. The reduction and formation of MNPs have been characterized by several analysis techniques such as X-ray diffraction (XRD), Fourier transmission infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM). The techniques showed that average particle size of WBS-AgNPs and WBS-AuNPs in crystalline nature was in ranges of 7–13 nm and 11–14 nm, respectively. The synthesized nanoparticles were used to evaluate antibacterial activity and catalysis. The WBS-AgNPs showed strong antibacterial activity against B. subtilis and E. coli. The largest zone of inhibition against B. subtilis (14.2 mm) and E. coli (9.3 mm) was found at concentrations of 4.0 ppm and 2.0 ppm, respectively. The excellent catalytic application of both the nanoparticles for the reduction of 4-nitrophenol was confirmed via study on their kinetics. The normalized kinetic constants (knor) of WBS-AgNPs and WBS-AuNPs were found to be 1.72 9 10–3 s-1 mg-1 and 2.45 9 10–3 s-1 mg-1, respectively. Keywords Silver nanoparticles Gold nanoparticles Waste banana stem Catalysis Antibacterial reagent
Introduction Nowadays, nanotechnology is used for versatile fields that apply materials at the nanoscale. MNPs have possessed many advantages in various fields such as medicine, biosensor, treatment of wastewater, catalysis and biology [1–5]. Amongst them, AgNPs and AuNPs have been significantly considerable due to their excellent physicochemical properties. The green synthesis of MNPs has paid Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10876-020-01930-4) contains supplementary material, which is available to authorized users. & Thanh-Danh Nguyen [email protected]; [email protected] 1
Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam
2
Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam
3
School of Biotechnology, Tan Tao University, Long An Provine, Vietnam
4
Institute of Chemical Technology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
increasing attentions in recent years because the properties of the biosynthetic materials can differ from materials synthesized by the physical and chemical methods. The biosynthesized MNPs may have reduced toxicity, enhanced stability and biocompatibility [6, 7]. The green approaches using the bio-sourc
Data Loading...
