Photocatalytic degradation of Rhodamine B dye under UV/solar light using ZnO nanopowder synthesized by solution combustion route

Nagaraja, R.; Kottam, Nagaraju; Girija, C. R.; Nagabhushana, B.M.

doi:10.1016/j.powtec.2011.09.014

Cited by 235 publications

(91 citation statements)

References 20 publications

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“…The absorption spectrum of RhB dye was measured first and it shows the maximum absorption in the visible region which is at 550 nm and also a minimum absorption in the UV region. Further, all the irradiated samples show a higher photocatalytic activity around 550 nm (Nagaraja et al 2012) where their absorption intensity decreases slowly with increase in the irradiation time which indicates the degradation of the dye (Ali et al 2013). Due to the formation of more free-radical from small size of QDs, a higher degradation effect was observed in the ZnO/starch QDs corresponding to that of pure ZnO QDs (Qiu et al 2008).…”

Section: Photocatalysis Analysismentioning

confidence: 89%

Structural and optical characterization of pure and starch-capped ZnO quantum dots and their photocatalytic activity

Vidhya¹,

Saravanan

Bhoopathi³

et al. 2014

Appl Nanosci

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Among the different types of metal oxides, zinc oxide (ZnO) is a most commonly used metal oxide in a broad variety of applications. In the present investigation, a modified green synthesis route was used to synthesize pure and starch-capped ZnO (ZnO/starch) quantum dots (QDs) and studied their structural and optical characteristics. In this study, hexagonal crystal structure was observed in both pure and ZnO/starch QDs using X-ray diffraction technique. A spherical-shaped surface morphology was found with the size of 5-10 nm using transmission electron microscope technique. The interaction between ZnO QDs and starch molecules was proved via Fourier infra-red spectrometer technique. On the other hand, their fluorescence behaviors were investigated using photoluminescence technique, in that the ZnO/starch QDs showed an enhanced emission behavior when compared to the pure ZnO QDs. Further, the solar photocatalytic activity of both the ZnO QDs was examined with the dye Rhodamine B (RhB) at the end of 30, 60, 90, and 120 min. In this, ZnO/ starch QDs show a good and more decomposition of RhB than pure ZnO QDs. Collectively, in the present study, green synthesis route produced an efficient QDs (pure and ZnO/starch) and it will be very useful for many other QDs. The ZnO/starch QDs are suitable for decomposing the RhB and other toxic organic dyes.

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Section: Photocatalysis Analysismentioning

confidence: 89%

Structural and optical characterization of pure and starch-capped ZnO quantum dots and their photocatalytic activity

Vidhya¹,

Saravanan

Bhoopathi³

et al. 2014

Appl Nanosci

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“…EDX sonuçlarına göre katalizör %67.7 Zn; %12.0 Cl, %11.9 O; %5.6 C ve %2.8 Al içermektedir (Şekil 2). 400-4000 cm-1 aralığında taranan FTIR sonuçlarına göre, sadece 450-550 cm-1 bant aralığında büyük bir pik gözlenmiş olup, bu pik Zn-O bağlarına işaret etmektedir [18]. …”

Section: Atık Zno Katalizörünün öZellikleriunclassified

Photocatalytic degradation of methylene blue by waste ZnO catalyst

Çifçi¹

2017

Pamukkale J Eng Sci

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“…Hydroxyl radicals are known to be most important intermediates during the photocatalytic degradation process of organic compounds. They can react with dyes and result in degradation products [35][36][37]. Therefore, so can be seen in Fig.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

NH3-assisted synthesis of PbS nanostructures: a novel hydrothermal method, structural and photocatalytic studies

Mansournia

Hajiebrahimi

2015

J Mater Sci: Mater Electron

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In this work, lead sulfide nanostructures were successfully synthesized by a new one-step method via the gas-solution precipitation from lead(II) acetate and thiourea mixture solution in the ammonia atmosphere. The structure and morphology of the PbS nanostructures were determined by means of powder X-ray diffraction, field emission scanning electron microscopy and Fourier transformation infrared spectroscopy. Furthermore, the effects of contact time, final pH of reaction mixture, concentrations of reagents, temperature, and presence of surfactant on the purity, morphology and size of the as-prepared PbS were studied. Moreover, the photocatalytic activity of these nanostructures was also evaluated by decolorization yield of Congo red aqueous solution under ultraviolet irradiation.

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Photocatalytic degradation of Rhodamine B dye under UV/solar light using ZnO nanopowder synthesized by solution combustion route

Cited by 235 publications

References 20 publications

Structural and optical characterization of pure and starch-capped ZnO quantum dots and their photocatalytic activity

Structural and optical characterization of pure and starch-capped ZnO quantum dots and their photocatalytic activity

Photocatalytic degradation of methylene blue by waste ZnO catalyst

NH3-assisted synthesis of PbS nanostructures: a novel hydrothermal method, structural and photocatalytic studies

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