Green synthesis of lead oxide nanoparticles for photo-electrocatalytic and antimicrobial applications

Abstract

Synthesis of nanoparticles (NPs) for many different uses requires the development of environmentally friendly synthesis protocols. In this article, we present a simple and environmentally friendly method to synthesize lead oxide (PbO) NPs from the plant material of the Mangifera indica. Analytical techniques such as spectroscopy, X-ray diffraction, and microscopy were used to characterize the synthesized PbO NPs, and their photo-electrocatalytic and antifungal properties were also evaluated. H2O2 was used to investigate the efficacy of removing methylene blue dye. At a range of pH values, H2O2 was used to study the role of hydroxyl radicals in the breakdown of methylene blue dye. Methylene blue dyes are more easily eliminated due to increased generation of the *OH radical during removal. Dye degradation was also significantly affected by the aqueous medium’s pH. Additionally, the electrocatalytic properties of the PbO NPs adapted electrode were studied in CH3COONa aqueous solution using cyclic voltammetry. Excellent electrocatalytic properties of the PbO NPs are shown by the unity of the anodic and cathodic peaks of the modified electrode in comparison to the stranded electrode. Aspergillus flavus, Aspergillus niger, and Candida glabrata were some fungi tested with the PbO NPs. Against A. flavus (40%) and A. niger (50%), and C. glabrata (75%), the PbO NPs display an excellent inhibition zone. Finally, PbO NPs were used in antioxidant studies with the powerful antioxidant 2, 2 diphenyl-1-picrylhydrazyl (DPPH). This study presents a simple and environmentally friendly method for synthesizing PbO NPs with multiple uses, including photo-electrocatalytic and antimicrobial activity.

Structural Analysis and Adsorption Studies of (PbO, MgO) Metal Oxide Nanocomposites for Efficient Methylene Blue Dye Removal from Water

“…The Pb-O bond stretching band is responsible for the distinctive transmittance peaks that are detected within the 680 cm −1 range. Oxides are also visible in this range due to decreased transmittance [ 30 , 31 ]. The stretching vibrations caused by the C-O bond are represented by an intense infrared absorption seen in the range of 2353.…”

Smartphone-Integrated Automated Sensor Employing Electrochemically Engineered 3D Bimetallic Nanoflowers for Hydrogen Peroxide Quantification in Milk

“…32 Several Pb-based nanostructures have been synthesized so far and possess a high specific surface area, electrocatalytic activity, and energy storage capacity. 33,34 Hence, they are widely employed in sensors, solar energy conversion materials, and batteries and as in vivo imaging agents. 35−37 Hence, we tried to explore the enhanced properties of both metals to synthesize bimetallic flower-like nanostructures.…”

“…Pb metal is also known for its superior reaction sites and intrinsic chemical properties . Several Pb-based nanostructures have been synthesized so far and possess a high specific surface area, electrocatalytic activity, and energy storage capacity. , Hence, they are widely employed in sensors, solar energy conversion materials, and batteries and as in vivo imaging agents. − Hence, we tried to explore the enhanced properties of both metals to synthesize bimetallic flower-like nanostructures. Bimetallic NFs have become increasingly popular due to their synchronous effect and strong chemical makeup customizability, enabling them to exhibit enhanced physicochemical properties in comparison to monometallic components. − In light of this, an appealing and robust sensor platform based on 3D bimetallic BiPb NFs was devised employing an easy, one-step co-electrodeposition.…”

Biosynthesis of lead oxide nanoparticles using Ocimum lamiifolium leaves extract

“…Lead oxide exists, basically, in the form of PbO, Pb 2 O 3 , Pb 3 O 4 , and PbO 2 [2]. Among these, the lead (II) oxides (PbO) are attractive due to their wide range of application for lead storage batteries, ceramics and gas sensors [3][4][5][6][7]. Now a days PbO has received due attention because of its cost-effectiveness, air and water compatibility, good reactivity, and recyclability [8].…”