Optimization of parameters for maximizing photocatalytic behaviour of Zn1-xFexO nanoparticles for methyl orange degradation using Taguchi and Grey relational analysis Approach

Jena, MK; Manjunatha, C; Shivaraj, B.W.; Nagaraju, G.; Ashoka, S.; Aan, M.P. Sham

doi:10.1016/j.mtchem.2019.01.004

Cited by 46 publications

(34 citation statements)

References 39 publications

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“…The band gap energy is found to be 3.31 eV ( Fig. 5) for synthesised ZNRs and matches with the band gap reported for ZNRs [1].…”

Section: Band Gap Energy Calculations For Znrssupporting

confidence: 84%

“…Figure 1 shows the XRD peaks for ZNRs positioned at 31 respectively. Results confirmed the presence of wurtzite structure which is similar to standard JCPDS No: 89-510 [1]. In the refinement of wurtzite ZnO with Zn at (1/3, 2/3, 0) and O at (1/3, 2/3, u), pseudo-voigt function has been taken into account in describing the Bragg shape (discussed in Sect.…”

Section: X-ray Diffraction Analysissupporting

confidence: 75%

“…Nowadays, the world environmental pollution especially due to water pollution, caused by organic contaminants has become a severe threat to humans and aquatic living beings. Since last decade, worldwide, many research groups are continuously researching to purify polluted water from its contaminants, major portion of which are organic in nature [1]. Textile industry is one of the main sources of water pollution worldwide because of its dyecontaining effluents which are let into water bodies; attracting global concern.…”

Section: Introductionmentioning

confidence: 99%

“…ZNRs are conventionally synthesized via chemical methods like precipitation, chemical vapour deposition, hydrothermal, solution combustion, sol-gel, sono and electrochemical methods [1,[29][30][31] which are actually not recommended in green chemistry. Biological approaches for synthesis of metal oxide nano particles have been suggested as valuable and eco-friendly alternatives to chemical methods [7].…”

Section: Introductionmentioning

confidence: 99%

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Photo-assisted mineralisation of titan yellow dye using ZnO nanorods synthesised via environmental benign route

Vidya¹,

Manjunatha

Sudeep³

et al. 2020

SN Appl. Sci.

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Green synthesis of metal oxide nanoparticles using plant extract is a most promising substitute for regular methods that involve chemical synthesis approach. The present study reports the synthesis of ZnO nano rods (ZNRs) using Calotropis gigantea, a plant rich in flavonoids and alkaloids and their application as a photocatalyst in the degradation of titan yellow dye. The synthesized ZNRs were characterized using XRD, FESEM-EDS and HRTEM-SAED. The XRD results confirm the formation of wurtzite ZnO. The FESEM images confirmed that ZNRs have length ranging from 20 to 200 nm, diameter ranging between 20 and 80 nm and width between 20 and 50 nm. The bio-synthesized ZNRs were used for photo-degradation of titan yellow dye, one of the main effluents from textile industries, discharged directly into water bodies. The ZNRs exhibited 95% dye degradation for 10 ppm TY dye concentration in the presence of 60 mg of the ZNRs catalyst at pH 8 for 60 min UV irradiation. The present study reports eco-friendly method for the synthesis of ZNRs and its efficiency as a photo catalyst in the advanced photo assisted oxidation process for degradation of titan yellow dye.

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“…The band gap energy is found to be 3.31 eV ( Fig. 5) for synthesised ZNRs and matches with the band gap reported for ZNRs [1].…”

Section: Band Gap Energy Calculations For Znrssupporting

confidence: 84%

Section: X-ray Diffraction Analysissupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photo-assisted mineralisation of titan yellow dye using ZnO nanorods synthesised via environmental benign route

Vidya¹,

Manjunatha

Sudeep³

et al. 2020

SN Appl. Sci.

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“…Therefore, ZnO nanoparticles are regarded as promising potential photocatalysts for removing toxic pollutants such as dyes. Jena et al [101] synthesized Fe 3+ -doped ZnO nanoparticles for the photodegradation of MO dyes in water. In this study, it was found that an increase of the dopant concentration leads to shrinkage of the band gap so that, when the Fe 3+ percentage rises to 5%, the bandgap decreases to 2.61 eV.…”

Section: Active 0d Nano-adsorbentsmentioning

confidence: 99%

The Nanosized Dye Adsorbents for Water Treatment

Homaeigohar

2020

Nanomaterials

139

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Clean water is a vital element for survival of any living creature and, thus, crucially important to achieve largely and economically for any nation worldwide. However, the astonishingly fast trend of industrialization and population growth and the arisen extensive water pollutions have challenged access to clean water across the world. In this regard, 1.6 million tons of dyes are annually consumed. Thereof, 10%–15% are wasted during use. To decolorize water streams, there is an urgent need for the advanced remediation approaches involving utilization of novel materials and technologies, which are cost and energy efficient. Nanomaterials, with their outstanding physicochemical properties, can potentially resolve the challenge of need to water treatment in a less energy demanding manner. In this review, a variety of the most recent (from 2015 onwards) opportunities arisen from nanomaterials in different dimensionalities, performances, and compositions for water decolorization is introduced and discussed. The state-of-the-art research studies are presented in a classified manner, particularly based on structural dimensionality, to better illustrate the current status of adsorption-based water decolorization using nanomaterials. Considering the introduction of many newly developed nano-adsorbents and their classification based on the dimensionality factor, which has never been employed for this sake in the related literature, a comprehensive review will be presented.

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Advances in Hierarchical Inorganic Nanostructures for Efficient Solar Energy Harvesting Systems

Manjunatha,

Rastogi,

Manmadha Rao

et al. 2024

ChemSusChem

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The urgent need to address the global energy and environmental crisis necessitates the development of efficient solar‐power harvesting systems. Among the promising candidates, hierarchical inorganic nanostructures stand out due to their exceptional attributes, including a high specific surface area, abundant active sites, and tunable optoelectronic properties. In this comprehensive review, we delve into the fundamental principles underlying various solar energy harvesting technologies, including dye‐sensitized solar cells (DSSCs), photocatalytic, photoelectrocatalytic (water splitting), and photothermal (water purification) systems, providing a foundational understanding of their operation. The review then shifts its focus to recent advancements in the synthesis, design, and development of hierarchical nanostructures composed of diverse inorganic material combinations, tailored for each of these solar energy harvesting systems. We meticulously elaborate on the distinct synthesis methods and conditions employed to fine‐tune the morphological features of these hierarchical nanostructures. Furthermore, this review offers profound insights into critical aspects such as electron transfer mechanisms, band gap engineering, the creation of hetero‐hybrid structures to optimize interface chemistry through diverse synthesis approaches, and precise adjustments of structural features. Beyond elucidating the scientific fundamentals, this review explores the large‐scale applications of the aforementioned solar harvesting systems.

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Optimization of parameters for maximizing photocatalytic behaviour of Zn1-xFexO nanoparticles for methyl orange degradation using Taguchi and Grey relational analysis Approach

Cited by 46 publications

References 39 publications

Photo-assisted mineralisation of titan yellow dye using ZnO nanorods synthesised via environmental benign route

Photo-assisted mineralisation of titan yellow dye using ZnO nanorods synthesised via environmental benign route

The Nanosized Dye Adsorbents for Water Treatment

Advances in Hierarchical Inorganic Nanostructures for Efficient Solar Energy Harvesting Systems

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