Tunable electrochemistry and efficient antibacterial activity of plant-mediated copper oxide nanoparticles synthesized by Annona squamosa seed extract for agricultural utility

Abstract

This study reports plant mediated-copper oxide nanoparticles synthesis from Annona squamosa and their real-life application in agricultural domain for label-free detection of H2O2 and its antibacterial efficiency for combating rice crop pathogen.

Polyethylene glycol-derived polyelectrolyte–protein nanoclusters for protein drug delivery

“…S4 † ). 33 These data confirmed the successful fabrication of polymer–protein nanoclusters through electrostatic complexing.…”

Bioinspired triangular ZnO nanoclusters synthesized by Argyreia nervosa nascent leaf extract for the efficient electrochemical determination of vitamin C

“…Kinetic studies. The charge transfer rate constant (K s ) value change obtained by surface modication of the ITO by the bT-ZnO NCs was calculated using eqn (2), 39 where F is the Faraday constant (96 485C mol À1 ); R is the gas constant, which is 8.314 J mol À1 K À1 ; m is a separation of the peak-to-peak (V); n corresponds to the number of electrons transferred, i.e., 1; n is the scan rate (50 mV), and T is 27 C (room temperature). By employing all these values, K s was determined for the bT-ZnO/ ITO electrode as 0.6382 s À1 , which was attributed to the increased transfer of electrons owing to the higher catalytic activity of the bT-ZnO NCs.…”

“…From this result, it is evident that the electrochemical reaction of AA with bT-ZnO NCs was a diffusion-controlled process. Further, the D (diffusion coefficient) for the diffusion of [Fe(CN) 6 ] 3À/4À from the electrolyte solution to the bT-ZnO/ITO electrode surface was calculated by the Randles-Sevcik equation, eqn (3), 39 in which I p corresponds to the electrode peak current, i.e., I pa and I pc ; n is the electron number (1); A is the electrode's surface area (0.25 cm 2 ); and C is the concentration at the surface in mol cm À3 (5 mM). Putting the values in eqn (3), the obtained D value of the bT-ZnO/ITO electrode was 2.0627 Â 10 1 cm 2 s À1 .…”

Enhanced antimicrobial treatment by a clay-based drug nanocarrier conjugated to a guanidine-rich cell penetrating peptide

“…Generally, estimation of the mean size of the particles is carried out via two ways; first, high-resolution (HR) TEM imaging and selected area (electron) diffraction (SAED) are performed on the sample. 68,69 Second, a zoomed-out image is selected and imported into Digimizer software, then the size of the particles that are distinguishable by eyes is estimated. 70 In this work, we used the second method and selected an area for evaluation of size distribution of for the neat HNTs (green box in image c).…”