Abroma augusta Linn bark extract-mediated green synthesis of gold nanoparticles and its application in catalytic reduction

The green synthesis of inorganic nanoparticles (NPs) using bio-materials has attained enormous attention in recent years due to its simple, eco-friendly, low-cost and non-toxic nature. In this work, silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) were synthesized by the marine algae extract, Sargassum serratifolium (SS). The characteristic studies of bio-synthesized SS-AgNPs and SS-AuNPs were carried out by using ultraviolet–visible (UV–Vis) absorption spectroscopy, dynamic light scattering (DLS), high-resolution transmission electron microscope (HR-TEM), selected area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Phytochemicals in the algae extract, such as meroterpenoids, acted as a capping agent for the NPs’ growth. The synthesized Ag and Au NPs were found to have important catalytic activity for the degradation of organic dyes, including methylene blue, rhodamine B and methyl orange. The reduction of dyes by SS-AgNPs and -AuNPs followed the pseudo-first order kinetics.

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Green synthesis of gold nanoparticles with willow tree bark extract: a sensitive colourimetric sensor for cysteine detection

Analytical Methods ◽

10.1039/c4ay01362j ◽

2014 ◽

Vol 6 (17) ◽

pp. 6916-6924 ◽

Cited By ~ 17

Author(s):

Morteza Bahram ◽

Esmat Mohammadzadeh

Keyword(s):

Gold Nanoparticles ◽

Green Synthesis ◽

Synthesis Method ◽

Tree Bark ◽

Bark Extract ◽

Willow Tree

In this work we report an easy and simple green synthesis method for gold nanoparticles (GNPs) using willow tree bark extract.

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Green synthesis of gold nanoparticles reduced and stabilized by squaric acid and supported on cellulose fibers for the catalytic reduction of 4-nitrophenol in water

RSC Advances ◽

10.1039/c6ra17480a ◽

2016 ◽

Vol 6 (94) ◽

pp. 91185-91191 ◽

Cited By ~ 28

Author(s):

Md. Tariqul Islam ◽

Julio E. Padilla ◽

Noemi Dominguez ◽

Daisy C. Alvarado ◽

Md Shah Alam ◽

...

Keyword(s):

Gold Nanoparticles ◽

Green Synthesis ◽

Sodium Borohydride ◽

Catalytic Reduction ◽

Cellulose Fibers ◽

Squaric Acid

Gold nanoparticles reduced and stabilized by sodium squarate in water that attach to cellulose fibers and catalyse the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with sodium borohydride.

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Green Synthesis of Gold Nanoparticles using Adina Cordifolia Bark Extract and its Antimicrobial and in Vitro Anticancer Study

International Journal of Scientific Research in Science and Technology ◽

10.32628/ijsrst196426 ◽

2019 ◽

pp. 143-152

Author(s):

Shaileshkumar C Kotval

Keyword(s):

Gold Nanoparticles ◽

Antibacterial Activity ◽

Green Synthesis ◽

Anticancer Activity ◽

Cancer Cell Line ◽

Medical Application ◽

Positive Control ◽

Bark Extract ◽

Uv Visible

In this study, green synthesis of gold nanoparticles were success fully synthesised by using Adina cordifolia plant bark aqueous extract which provides eco-friendly process, an environmentally benign, easy and proficient way for the synthesis of gold nanoparticles. The smaller size of gold nanoparticles have research on various dieses are very important. The green synthesized gold nanoparticles were characterized by UV-Visible spectroscopy, FT-IR, XRD, SEM, TEM and their antimicrobial activity was investigated. From UV-Visible spectrophotometer result was confirmed the formation of gold nanoparticles by color changed to ruby red color from pale yellow color indicates the reduction of Au3+ ions to Auo. The antibacterial activity for the synthesized gold nanoparticles was confirmed by the antibacterial activity experiment against Bacillus subtilis and Escherichia coli by agar well method. The synthesized AuNPs was performed anticancer activity against MCF-7 breast cancer cell line. Compared to Adriamycin, Positive Control Compound AuNPs exhibited potent anticancer activity with the IC50. The green synthesized gold nanoparticles proved to be potential candidates for medical application antimicrobial and anticancer activity is highly essential.

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GREEN SYNTHESIS OF GOLD NANOPARTICLES FROM BANANA PITH EXTRACT AND ITS EVALUATION OF ANTIBACTERIAL ACTIVITY AND CATALYTIC REDUCTION OF MALACHITE GREEN DYE

Journal of Microbiology Biotechnology and Food Sciences ◽

10.15414/jmbfs.2018.7.6.641-645 ◽

2018 ◽

Vol 7 (6) ◽

pp. 641-645 ◽

Cited By ~ 2

Author(s):

Sneha Nayak ◽

Shyama Prasad Sajankila ◽

C. Vaman Rao

Keyword(s):

Gold Nanoparticles ◽

Antibacterial Activity ◽

Green Synthesis ◽

Malachite Green ◽

Catalytic Reduction ◽

Malachite Green Dye

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Green Synthesis of Silver Nanoparticles using Polyalthia longifolia Stem Bark Extract and its Catalytic Reduction of 4-Nitrophenol

Asian Journal of Chemistry ◽

10.14233/ajchem.2019.22071 ◽

2019 ◽

Vol 31 (11) ◽

pp. 2439-2442

Author(s):

Karuppiah Muthu ◽

B. Akilandaeaswari ◽

S. Mangala Nagasundari

Keyword(s):

Silver Nanoparticles ◽

Green Synthesis ◽

Catalytic Reduction ◽

Stem Bark ◽

Bark Extract ◽

Visible Spectroscopy ◽

Transmission Electron ◽

Stem Bark Extract ◽

Uv Visible ◽

Polyalthia Longifolia

In this present study, green synthesis of silver nanoparticles (AgNPs) was synthesized from silver nitrate using the reducing agents of Polyalthia longifolia bark extract and applied the catalyst in the reduction/degradation of environmental polluted organic compound in the presence of NaBH4. Initially, the colourless reaction mixture was slowly changed to yellowish brown, UV-visible spectroscopy of surface plasmon resonance centre at 447 nm confirmed the formation of AgNPs. High resolution transmission electron microscopy (HRTEM) clearly identified the spherical shapes nanoparticles with diameters sizes 5-25 nm. This AgNPs has excellent catalyst in the catalytic reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) as compared to the reducing agent of NaBH4 (chemical) and plant extract (natural).

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