Photocatalytic paper using zinc oxide nanorods

Baruah, Sunandan; Jaisai, Mayuree; Imani, Reza; Nazhad, Mousa M.; Dutta, Joydeep

doi:10.1088/1468-6996/11/5/055002

Cited by 109 publications

(77 citation statements)

References 27 publications

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“…These holes and electrons interact with H 2 O and O 2 , respectively, to yield the OH and OOH hydroxyl radicals; thus, the holes play an important role in photocatalytic reactions. These hydroxyl radicals, which are highly oxidizing in nature, can completely oxidize the dyes by abstracting electron from dye molecules and by breaking the large organic materials into less harmful small organic materials [23,24].…”

Section: Resultsmentioning

confidence: 99%

Hydrothermal controllable synthesis to convert ZnO hexagonal nanotubes to hexagonal nanorods and their photocatalytic application

Sabry

Abid

Muhsen

et al. 2016

J Mater Sci: Mater Electron

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Zinc oxide (ZnO) thick films were analyzed by high-resolution X-ray diffraction (HR-XRD), field emission scanning electron microscopy, and photoluminescence (PL) spectroscopy at room temperature. The films were grown on glass substrates using different molar concentrations of aqueous solution (0.02, 0.04, and 0.06 M) via a simple hydrothermal method. This method uses glass bottles with rubber caps as reactor vessels (100 mL) and, thus, is classified as a green chemistry technique. Hexahedral zinc nitrate (Zn (NO 3 ) 2 Á6H 2 O), hexamethylenetetramine (C 6 H 12 N 4 ), and deionized water were used as starting materials and were reacted in the presence of heat. HR-XRD measurements confirmed that the diffraction peaks of the polycrystalline structure films can be assigned to the hexagonal-shaped wurtzite ZnO. In addition, the PL spectra show that the integrated intensity decreases with the increase in ZnO content. The SEM images also revealed the existence of hexagonal ZnO nanotubes in the 0.02 M sample, and these nanotubes are gradually converted into hexagonal nanorods with the increase in ZnO content. Moreover, the photocatalytic activity of both nanostructures was measured based on the degradation of methyl blue (MB) by using ultraviolet light (k = 366 nm). Results showed that the ZnO nanotubes degraded MB more effectively than the nanorods.

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Section: Resultsmentioning

confidence: 99%

Hydrothermal controllable synthesis to convert ZnO hexagonal nanotubes to hexagonal nanorods and their photocatalytic application

Sabry

Abid

Muhsen

et al. 2016

J Mater Sci: Mater Electron

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“…The reason for this is the deceased light penetration, the increased light scattering and the slaughter in surface area occasioned by agglomeration at high solid concentration (Baruah et al 2010). …”

Section: Effect Of Dose Variationmentioning

confidence: 99%

Development of efficiency improved polymer-modified TiO2 for the photocatalytic degradation of an organic dye from wastewater environment

Sangareswari¹,

Sundaram²

2015

Appl Water Sci

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In this study, the photocatalytic activity of polypyrrole-TiO 2 nanocomposite was studied experimentally for the degradation of methylene blue (MB) dye under simulating solar light irradiation. To improve the photocatalytic activity of TiO 2 under sunlight irradiation, conducting polymers such as polypyrrole (PPy) and its derivatives are generally used as photosensitizers. The PPy-TiO 2 nanocomposite was prepared by the chemical oxidative polymerization method. The prepared nanocomposite showed better photocatalytic activity than bare TiO 2 under sunlight irradiation for the degradation of MB dye. The prepared nanocomposite was subjected to characterization techniques such as SEM-EDAX, FT-IR, UV-DRS, XRD, TGA and PL spectral analysis. Different influencing operating parameters like initial concentration of dye, irradiation time, pH and amount of PPy-TiO 2 nanocomposite used have also been studied. The optical density of the dye degradation was measured by UV-Visible spectrophotometer. The repeatability of photocatalytic activity was also tested. A plausible mechanism was proposed and discussed on the basis of experimental results.

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“…Subsequently, past essays have reported that ZnO can decay organic dyes such as methylene blue, Rhodamine B, methyl red and methyl orange under UV irradiation [6][7][8][9][10]. For instance, special attention is focused to promote the photocatalytic activity of ZnO by commanding the size of the particles, concentration of oxygen defects, and surface area.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured ZnO photocatalysts prepared via surfactant assisted Co-Precipitation method achieving enhanced photocatalytic activity for the degradation of methylene blue dyes

El-Shazly

Rashad

Abdel-Aal

et al. 2016

Journal of Environmental Chemical Engineering

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Photocatalytic paper using zinc oxide nanorods

Cited by 109 publications

References 27 publications

Hydrothermal controllable synthesis to convert ZnO hexagonal nanotubes to hexagonal nanorods and their photocatalytic application

Hydrothermal controllable synthesis to convert ZnO hexagonal nanotubes to hexagonal nanorods and their photocatalytic application

Development of efficiency improved polymer-modified TiO2 for the photocatalytic degradation of an organic dye from wastewater environment

Nanostructured ZnO photocatalysts prepared via surfactant assisted Co-Precipitation method achieving enhanced photocatalytic activity for the degradation of methylene blue dyes

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