Synthesis, characterization and photo catalytic studies of the composites by tantalum oxide and zinc oxide nanorods

Chennakesavulu, K.; Reddy, M. Madhusudhana; Reddy, G. Ramanjaneya; Rabel, Arul Maximus; Brijitta, J.; Vinita, V. Sherlin; Sasipraba, T.; Sreeramulu, J.

doi:10.1016/j.molstruc.2015.02.052

Cited by 28 publications

(17 citation statements)

References 44 publications

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“…Hierarchically structured and heterostructure composite are usually responsible for the high photocatalytic performance [225][226][227][228][229][230]. For example, the flower-like ZnO hierarchical microstructures assembled by interleaving nanosheets were prepared and tested for photodegradation of RB [225].…”

Section: Photo-degradation Of Rhodamine B (Rhb)mentioning

confidence: 99%

The Applications of Morphology Controlled ZnO in Catalysis

et al. 2016

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Zinc oxide (ZnO), with the unique chemical and physical properties of high chemical stability, broad radiation absorption range, high electrochemical coupling coefficient, and high photo-stability, is an attractive multifunctional material which has promoted great interest in many fields. What is more, its properties can be tuned by controllable synthesized morphologies. Therefore, after the success of the abundant morphology controllable synthesis, both the morphology-dependent ZnO properties and their related applications have been extensively investigated. This review concentrates on the properties of morphology-dependent ZnO and their applications in catalysis, mainly involved reactions on green energy and environmental issues, such as CO 2 hydrogenation to fuels, methanol steam reforming to generate H 2 , bio-diesel production, pollutant photo-degradation, etc. The impressive catalytic properties of ZnO are associated with morphology tuned specific microstructures, defects or abilities of electron transportation, etc. The main morphology-dependent promotion mechanisms are discussed and summarized.

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Section: Photo-degradation Of Rhodamine B (Rhb)mentioning

confidence: 99%

The Applications of Morphology Controlled ZnO in Catalysis

et al. 2016

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“…In this context, SnO 2 and its composites as a matrix have been widely used for catalysis in redox reactions (organic transformations) , gas‐sensing applications , as an electrode material , photocatalysis , methane to methanol conversion , biofuel conversions, etc. Previous studies on ZnO‐Ta 2 O 5 nanorods , CMT: Ta 2 O 5 , AgI/SnO 2 and ZnO‐In 2 O 3 report the visible‐light photocatalytic activity due to the formation of heterojunctions. Xiao et al .…”

Section: Introductionmentioning

confidence: 95%

High Surface Area SnO₂–Ta₂O₅ Composite for Visible Light‐driven Photocatalytic Degradation of an Organic Dye

Velaga

Shanbogh

Swain

et al. 2018

Photochem & Photobiology

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SnO -Ta O nanocomposite was synthesized by a facile coprecipitation method and further calcined to obtain crystalline powder. Phase formation, morphology, bandgap and photocatalytic properties were analyzed using powder X-ray diffraction, scanning electron microscopy, UV-Vis diffused reflectance spectroscopy, BET surface area and Raman spectroscopy, respectively. Effect of calcination temperature on the crystallinity of the composite was studied. The as-prepared samples of SnO , Ta O and SnO -10wt%Ta O composite as well as the calcined composite sample were tested for photocatalytic activity for methylene blue dye degradation under visible light. Photocatalytic studies reveal that the as-prepared SnO -10wt%Ta O composite showed the best photocatalytic activity for the degradation of methylene blue (MB) by harvesting visible-light radiation efficiently. Further mineralization of methylene blue, estimated by COD analysis, is found to have degraded with an efficiency of 91.6%. The study demonstrates that heterostructure of SnO -Ta O nanocomposite could be applied in photocatalytic purification of organic pollutants.

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“…Therefore it is necessary to eliminate water pollution (Pourmortazavi et al, 2017). Physical methods such as adsorption and chemical methods such as chlorination and ozonation are some of the most frequently used methods for the removal of textile dyes (Chennakesavulu et al, 2015). Floculation and reverse osmosis are also some other methods commonly used, but these methods are not destructive.…”

Section: Introductionmentioning

confidence: 99%

Efficient photocatalytic degradation of organic dye from aqueous solutions over zinc oxide incorporated nanocellulose under visible light irradiation

Jamal¹,

Radhakrishnan²,

Raghavan

et al. 2020

Main Group Metal Chemistry

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AbstractIncreased growth of textile industries leads to the tremendous accumulation of dyes on water and surrounding environments. This terrific increase of dyes is the major cause of water pollution which in turn adversely affects the aquatic lives and the balance of our ecosystem. Purpose of the present study is to report the synthesis and characterization of a composite namely zinc oxide incorporated nanocellulose (ZnO/NC) for effective degradation of an anionic dye, Congo red. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunaeur, Emmett and Teller (BET) surface area analysis and scanning electron microscopy (SEM) studies have helped to characterize the composite. The optical properties of the samples were studied by UV-Visible spectroscopy. Feasibility of the photocatalyst in the degradation of Congo red was tested. Experimental conditions such as time of contact, concentration of the dye solution, catalyst dosage, pH were altered to find out the optimum conditions of degradation. The optimum pH was found to be 5.5 and dosage of ZnO/NC was optimized as 0.075 g for a dye concentration of 20 ppm. Equilibrium was attained at 120 min. The studies reveal that the photocatalyst ZnO/NC is efficient for the photodegradation of Congo red. Photodegradation was due to electron hole interaction between metal oxides and nanocellulose.

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Synthesis, characterization and photo catalytic studies of the composites by tantalum oxide and zinc oxide nanorods

Cited by 28 publications

References 44 publications

The Applications of Morphology Controlled ZnO in Catalysis

The Applications of Morphology Controlled ZnO in Catalysis

High Surface Area SnO₂–Ta₂O₅ Composite for Visible Light‐driven Photocatalytic Degradation of an Organic Dye

Efficient photocatalytic degradation of organic dye from aqueous solutions over zinc oxide incorporated nanocellulose under visible light irradiation

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Synthesis, characterization and photo catalytic studies of the composites by tantalum oxide and zinc oxide nanorods

Cited by 28 publications

References 44 publications

The Applications of Morphology Controlled ZnO in Catalysis

The Applications of Morphology Controlled ZnO in Catalysis

High Surface Area SnO2–Ta2O5 Composite for Visible Light‐driven Photocatalytic Degradation of an Organic Dye

Efficient photocatalytic degradation of organic dye from aqueous solutions over zinc oxide incorporated nanocellulose under visible light irradiation

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High Surface Area SnO₂–Ta₂O₅ Composite for Visible Light‐driven Photocatalytic Degradation of an Organic Dye