Effective photocatalytic removal of different dye stuffs using green synthesized zinc oxide nanogranules

Prasad, Anupama R.; Ammal, P. Rugmini; Joseph, Abraham

doi:10.1016/j.materresbull.2018.02.022

Cited by 56 publications

(9 citation statements)

References 41 publications

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“…Their existence in water, even at minute concentration, is highly noticeable and unfavourable [13,14]. It undergoes chemical and biological transformations in wastewater which decreases the oxygen solubility and thereby destroying aquatic life [15,16].…”

mentioning

confidence: 99%

Metal organic framework (MOF) porous octahedral nanocrystals of Cu-BTC: Synthesis, properties and enhanced adsorption properties

Kaur

Umar

et al. 2019

Materials Research Bulletin

203

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confidence: 99%

Metal organic framework (MOF) porous octahedral nanocrystals of Cu-BTC: Synthesis, properties and enhanced adsorption properties

Kaur

Umar

et al. 2019

Materials Research Bulletin

203

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“…6A confirming the dye degradation The fundamental mechanism (Fig. 7) of the photocatalytic degradation of RhB by the BR-ZnONFs under solar radiation is due to the generation of electron-hole pairs when the solar light energy illuminates the surface of the BR-ZnONFs (Prasad et al 2018). These electron-hole pairs move spontaneously to the BR-ZnONFs surface and begin redox reactions with molecular oxygen and hydroxide ions.…”

Section: Photodegradation Of Rhb Dye Under Sunlightmentioning

confidence: 59%

Characterization and photocatalytic activity of ZnO nanoflowers synthesized using Bridelia retusa leaf extract

et al. 2021

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In the current work, the leaf extract of Bridelia retusa was used for the first time to synthesize zinc oxide nanoparticles (ZnONPs). A zinc nanoparticle-specific 364-nm peak was discerned via UV–Vis studies with a typical bandgap energy of 3.41 eV. FE-SEM micrographs revealed flower-shaped structure of the ZnONPs. EDS analysis corroborated the presence of zinc and oxygen. XRD spectrum established the wurtzite structure, sized at 11.06 nm. The mesoporous texture (4.89 nm) of the nanoparticles was deduced from BET analysis, proving a higher specific surface area than commercial ZnONPs. FTIR spectroscopy resulted in absorption bands typical for ZnONPs. Within a span of 165 min, under solar irradiation, the ZnONPs facilitated the photocatalytic degradation of Rhodamine B dye upto 94.74%. Exhibiting pseudo-first-order kinetics, the process had a degradation constant of 0.0109 min−1. It was concluded that numerous factors led to the high degradation efficiency. High values of bandgap energy and specific surface area, along with the mesoporous and crystalline nature of the ZnONPs led to the observed effect. The ZnONPs were also stabilized by the phytochemicals in the B. retusa leaves. The study is thus able to successfully demonstrate the huge potential in the field of environmental nanoremediation. The viability of using ZnONPs as solar photocatalysts for treating dye-laden industrial wastewater was thus attested.

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“…The bioinspired ZnONP (20 mg) shows 83.45% degradation while the conventionally synthesized ZnONP shows only 59.47 degradation efficiency in 90 min under the visible light irradiation. Prasad et al [102] synthesized ZnO nanoparticles using lemon juice as a capping agent and ethylene glycol as a solvent. They synthesized the nanoparticle in average 49.16 nm size and hexagonal wurtzite morphology.…”

Section: Photocatalytic Activity Of Metal Oxide Nanoparticlesmentioning

confidence: 99%

New frontiers in the biosynthesis of metal oxide nanoparticles and their environmental applications: an overview

Gebre

Sendeku

2019

SN Appl. Sci.

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Nanotechnology has become a promising and emerging field of research in creating and modifying nanomaterials for different applications. Nanoparticles are considered to be the basic element of nanotechnology as they are the primary source of several nanostructured materials. During the last few decades, several metal oxide nanoparticles (NPs) were synthesized and their applications were investigated in various fields of science and technology, including biomedical, environmental, energy and agricultural practices. Moreover, metal oxide NPs have been synthesized by physical and chemical methods, while the chemical method used different chemicals as reducing and stabilizing agents. However, the wet chemical synthesis strategy become responsible for various biological and environmental risks due to the toxicity of used chemicals. Recently, biological synthesis of metal oxide nanoparticles using plants, algae, and microbes as a source of precursor material has emerged as a green and safe method. Additionally, the green synthesized metal oxide nanoparticles have shown a pivotal role in several applications such as nano-adsorbents, nano-membranes, photocatalysts and disinfection of wastewater from microbes. In this review, we present an overview of the biosynthesis of metal oxide nanoparticles such as; ZnO, CeO 2 , TiO 2 , CdO, CuO, Fe 3 O 4 , SnO 2 , NiO etc. Their method of characterization and properties is also discussed. Finally, their applications towards environmental protection is presented with particular attention to water treatment and remediation.

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Effective photocatalytic removal of different dye stuffs using green synthesized zinc oxide nanogranules

Cited by 56 publications

References 41 publications

Metal organic framework (MOF) porous octahedral nanocrystals of Cu-BTC: Synthesis, properties and enhanced adsorption properties

Metal organic framework (MOF) porous octahedral nanocrystals of Cu-BTC: Synthesis, properties and enhanced adsorption properties

Characterization and photocatalytic activity of ZnO nanoflowers synthesized using Bridelia retusa leaf extract

New frontiers in the biosynthesis of metal oxide nanoparticles and their environmental applications: an overview

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