Multifaceted activities of plant gum synthesised platinum nanoparticles: catalytic, peroxidase, PCR enhancing and antioxidant activities

Multifaceted activities of plant gum synthesised platinum nanoparticles: catalytic, peroxidase, PCR enhancing and antioxidant activities

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A single pot, green method for platinum nanoparticles (Pt NP) production was devised with gum ghatti (Anogeissus latifolia). Analytical tools: ultraviolet–visible (UV-vis), dynamic light scattering, zeta potential, transmission electron microscope, X-ray diffraction (XRD), and Fourier transform infrared spectroscopy were employed. Wide continuous UV-vis absorption and black solution colouration proved Pt NP formation. Face-centred cubic crystalline structure of NP was evidenced from XRD. NPs formed were nearly spherical with a mean particle size of 3 nm. NP demonstrated a myriad of properties including catalytic, peroxidase, polymerase chain reaction (PCR) enhancing and antioxidant activities. Catalytic action of NP was probed via NaBH4 reduction of arsenazo-III dye. NP displayed considerable peroxidase activity via catalysis of 3, 3′, 5, 5′-tetramethylbenzidine oxidation by H2O2. NP showed exceptional stability towards varying pH (3–11), temperature (25–100°C), salt concentration (0–100 mM) and storage time duration (0–12 months). In comparison with horse radish peroxidase, its applicability as an artificial peroxidase is advantageous. NP caused a two-fold enhancement in PCR yield at 0.4 nM. Also showed significant 1′, 1′ diphenyl picryl-hydrazyle scavenging (80.1%) at 15 µg/mL. Author envisages that the biogenic Pt NP can be used in a range of biological and environmental applications.

Inspec keywords: reduction (chemical); light scattering; molecular biophysics; ultraviolet spectra; X-ray diffraction; Fourier transform infrared spectra; oxidation; dyes; visible spectra; catalysis; nanofabrication; pH; nanomedicine; scanning electron microscopy; nanoparticles; transmission electron microscopy; particle size; platinum; electrokinetic effects; biochemistry; enzymes

Other keywords: Fourier transform infrared spectroscopy; peroxidase activity; polymerase chain reaction enhancing activity; black solution colouration; analytical characterisation tools; transmission electron microscopy; ultraviolet-visible spectroscopy; time 0.0 month to 12.0 month; arsenazo-III; single pot green method; face-centred cubic crystalline structure; environmental conditions; artificial peroxidase; Pt; anogeissus latifolia; particle size; gum ghatti; Pt NP formation; PCR yield; X-ray diffraction; catalytic action; plant gum synthesised platinum nanoparticles; 1′,1′ diphenyl picryl-hydrazyle scavenging; antioxidant activities; zeta potential; dynamic light scattering; pH; temperature 25.0 degC to 100.0 degC; wide continuous UV-visible absorption; salt concentration; catalytic activity; azo dye decolourisation; XRD; two-fold enhancement; multifaceted activities; 3, 3′, 5, 5′-tetramethylbenzidine oxidation; PCR enhancing activity

Subjects: Physical chemistry of biomolecular solutions and condensed states; Low-dimensional structures: growth, structure and nonelectronic properties; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Chain reactions; Infrared and Raman spectra in metals; Optical properties of metals and metallic alloys (thin films/low-dimensional structures); Electrochemistry and electrophoresis; Visible and ultraviolet spectra of metals, semimetals, and alloys; Heterogeneous catalysis at surfaces and other surface reactions; Nanotechnology applications in biomedicine; Brillouin and Rayleigh scattering; other light scattering (condensed matter)


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