Development and characterization of nanosheets attached nanotetrapods of zinc oxide

Abstract

A unique morphology of ZnO nanostructures namely nanosheets attached nanotetrapods have been grown using thermal evaporation of zinc, which promises innovative advantages of both one and two dimensional nanostructures. The nanostructures have been characterized using X-ray Diffractometer, Scanning Electron Microscope, Transmission Electron Microscope, Energy Dispersive X-ray Analysis and Photoluminescence (PL) techniques. Various effects of low dimensionality have been analysed. Indexing of various peaks in XRD analysis confirmed the typical wurtzite ZnO structure. The SEM analysis revealed an interconnected three dimensional network of nanotetrapods with two dimensional sheets attached to the joints of nanotetrapods and a possible size control mechanism. TEM analysis provided a better understanding of the general morphology of nanotetrapods and size of nanorods and nanosheets. The chemical composition of the grown product has been analysed by EDAX which rules out the presence of any impurity and confirmed the purity of ZnO nanostructures. The PL spectroscopy was used to study the optical properties which indicate high optical purity of materials. The crystallite size as estimated by XRD analysis is observed in good agreement with the PL examination.

Synthesis of Zinc Oxide Nanoparticles Based on Coffee Husks Embedded on Mesoporous Silica for the Sensing of Acetaminophen

“…The functional groups present in biomass filtrate have critical roles in the fabrication process of the nanoparticles. The Biosynthesized ZnONPs were added to a mesoporous silica (Santa Barbara-15, SBA-15) for the determination of acetaminophen in ETPG 16 ATSDPV 0.05-2.5 0.0025 [74] ZnONPs/SBA-15/GCE DPV 4-32 0.11 This work [1] poly (acid yellow 9), [2] glassy carbon electrode, [3] Functionalized multi-wall carbon nanotubes, [4] poly (3,4-ethylenedioxythiophene), [5] Graphene oxide, [6] Boron-doped diamond, [7] Gold nanoparticles, [8] Multi-walled carbon nanotubes, [9] Nickel oxide nanoparticles, [10] Carbon black, [11] Dihexadecylphosphate, [12] Laccase, [13] Carbon paste electrode, [14] 4-Hydroxyquinoline-3-carboxylic Acid, [15] Screen-printed electrodes, [16] Electroochemically treated pencil graphite, ATS: Adsorptive transfer stripping, SWV: Square wave voltammetry.…”

“…It has been proved that they can act as reducing and stabilizing agents for the biosynthesis of nanoparticles, which constitute a novel method of synthesis without any toxic chemicals been used. [6] Among the sources, plant extracts are the cheapest one, which therefore will be used in this work. The target metallic nanoparticles to be synthesized in this work is the zinc oxide nanoparticles (ZnONPs) known to be multifunctional, non-toxic, biocompatible, low cost and ecofriendly materials.…”

A review on biological synthesis of ZnO nanostructures and its application in photocatalysis mediated dye degradation: An overview

“…Spherical shaped ZnO NPs with an average size 20 nm was synthesized using Punica granatum leaf extract and exhibited ~93% degradation efficiency for Coomassie brilliant blue R‐250 dye under exposure to sunlight for 180 min. [ 107 ] Similarly, ZnO NPs prepared from Acalypha indica leaf extract showed 96% degradation efficiency for MB under 90 min sunlight exposure. [ 108 ] Dhandapani et al reported the ureolytic bacteria assisted the preparation of ZnO nanostructure and studied its potential to decolorize different dyes.…”

Electrochemical detection and removal of brilliant blue dye via photocatalytic degradation and adsorption using phyto-synthesized nanoparticles

“…CBB R-250 was initially developed for use in the textile industry but is now majorly used as a basis of stain for the detection of protein in gel electrophoresis in the field of analytical biochemistry. 4 Besides a number of useful applications, it poses some severe threats to human beings and other living organisms. It belongs to a class of organic compounds termed as triphenylmethane dyes that have been widely reported for mutagenic and teratogenic effects on living organisms.…”

“…K. Singh et al employed green synthesized ZnO NPs for the photodegradation of CBB R-250, and achieved 93% degradation in 3 hours. 4 Venkata et al reported on 58.38% degradation of CBB R-250 in 90 minutes using CuO NPs. 15 N. Kaur et al evaluated the performance of NiO NPs for the photodegradation of CBB R-250 dye, which resulted in 95.7% degradation in 140 minutes.…”