Synthesis of photocatalytic zinc oxide nanoflowers using Peltophorum pterocarpum pod extract and their characterization

Abstract

Zinc oxide nanoflowers (ZnONFs) were prepared by employing the pod extract of Peltophorum pterocarpum as a green resource and characterized by various methods. UV–vis spectrum displayed a peak at 361 nm which confirmed the formation of ZnO nanoparticles. The optical band gap was calculated as 3.43 eV. FE-SEM images exposed the flower-like morphology and EDX portrayed strong signals for Zn and O. XRD studies substantiated signature peaks for the wurtzite phase of ZnONFs and the lattice parameters matched well with the literature. Mesoporous nature was confirmed by BET analysis which yielded a high specific surface area of 19.61 m2/g. FTIR bands at 420.48 and 462.92 cm−1affirmed the Zn and O bonding vibrations. The photocatalytic potential of the ZnONFs was successfully examined for the removal of methylene blue dye under natural solar light. The experimental data were fitted to Langmuir–Hinshelwood’s first-order equation and the kinetic constant was calculated as 0.0114 min–1.

PEG functionalized ZnO nanoparticles by fusion of precipitation-cum-hydrothermal method with enhanced photocatalytic activity

“…The specific-surface-area (SSA), pore volume, and total pore volume were assessed using the BET methodology (figure 8). The SSA of the PEG/ZnO NPs was 42 m 2 g −1 , which was considerably higher than the SSA of bulk ZnO NPs (4 m 2 g −1 ) and other generated ZnO NPs (20 m 2 g −1 ) [50]. Furthermore, it revealed a mesoporous nature with the pore diameter of 27 nm, and total pore volume 0.21 cm 3 g −1 .…”

Catalytic degradation of methylene blue dye and antibacterial activity of biosynthesized silver nanoparticles using Peltophorum pterocarpum (DC.) leaves

“…2). 10,13,25 These functional groups provided evidence for the presence of phytochemical constituents (avonoids, terpenoids, polyphenols, steroids, tannins, glycosides, and alkaloids) of the PPLE. 6,13,14 The compounds provided the electrons that induced the reduction of Ag + ions and also stabilized the subsequently developed AgNPs.…”

“…21,22 NPs are currently included in many commercial products and as such, the use of nature-based reducing and stabilizing agents is essential in their production to ensure a reduction in toxicity and environmental hazard associated with the use of conventional synthetic chemicals in the production. [23][24][25] Among the numerous NPs added to commercial products, silver (Ag) NPs are the most prominent as they are added to home appliances, food packaging, electronics, computers, textiles, personal care products, children's toys, and kitchen wares, and as food supplements under different trade names. [26][27][28][29] This is mostly to impart antimicrobial activities to the products.…”

Green synthesis of zinc nanoparticles with plant material and their potential application in bulk industrial production of mosquito-repellent antibacterial paint formulations

“…Nanotechnology shows potential in improving the environment, thanks to the heightened reactivity of nanoparticles, driven by their small size and substantial surface area. [12][13][14][15][16] This research distinguishes itself through key facets. For example, this centers around the innovative use of zinc nanoparticles and plant extracts in the formulation of green synthesis raw materials against mosquitoes and bacteria and we rigorously subject our formulated mosquito repellent and anti-microbial paint to a battery of tests post-application.…”

“…Nanotechnology shows potential in improving the environment, thanks to the heightened reactivity of nanoparticles, driven by their small size and substantial surface area. 12–16…”