Effect of cetylpyridinium chloride on surface passivation and photocatalytic activity of ZnO nanostructures

Barick, K. C.; Sharma, Priyanka; Mukhija, Achal; Sainis, Jayashree Krishna; Gupta, Alka; Hassan, P. A.

doi:10.1016/j.jece.2014.12.007

Cited by 15 publications

(6 citation statements)

References 59 publications

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“…The O vacancy in ZnO gives rise to the second peak at 545 nm . The fourth peak appears at 663 nm, as a result of carrier recombination from surface defects . The intensity of these impurity peaks is so high that has covered peak caused by exciton recombination near the edge of forbidden band, which reveals the existence of a large amount of defects in the hierarchical ZnO nanospheres .…”

Section: Resultsmentioning

confidence: 99%

Hydrangea‐like ZnO nanospheres on Al substrates via hydrothermal synthesis for photocatalytic activity

Zeng

Gao

Wang

et al. 2019

J Chinese Chemical Soc

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Hydrangea-like ZnO nanospheres were fabricated on Al substrates via a facile hydrothermal method with only one step. Scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and photoluminescence were used to investigate their morphology, component, structure, and optical properties. The hierarchical nanospheres are fabricated by 2D nanosheets with the shape of 3D sphere. By adjusting the reaction time, the formation process was monitored. The photocatalytic activity of ZnO nanospheres was also investigated for their dye degradation, and they exhibit good photocatalytic ability to congo red, with the degradation rate of 98.4%. Besides, they have universal catalysis effect on methyl orange. K E Y W O R D Scrystal growth, hydrothermal method, photocatalytic activity, plate assembly, ZnO nanosphere

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Section: Resultsmentioning

confidence: 99%

Hydrangea‐like ZnO nanospheres on Al substrates via hydrothermal synthesis for photocatalytic activity

Zeng

Gao

Wang

et al. 2019

J Chinese Chemical Soc

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“…When the dye molecule is photodegraded, the photogenerated holes and hydroxyl radicals preferentially attack the chromophore center. As a result of the amino group cleavage, hydrogen radical saturation, demethylation cleavage, release of one or more methyl group substituents on the amine groups, and further oxidation, products with m / z = 230, 135, and 81 are formed. − H 2 O and CO 2 are easily formed by oxidizing CN and C–S bonds in MB. − Figure shows the proposed pathway of degradation of MB by using AA as an organo-photooxidative compound based on GC-MS supported by HPLC.…”

Section: Results and Discussionmentioning

confidence: 99%

Green Organo-Photooxidative Method for the Degradation of Methylene Blue Dye

Majeed,

Ibrahim,

Al-Rawi

et al. 2024

ACS Omega

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This study used an organophoto-oxidative material to degrade the toxic azo dye, methylene blue (MB), due to its hazardous effects on aquatic life and humans. MB is traditionally degraded using metal-based catalysts, resulting in high costs. Several organic acids were screened for organo-photooxidative applications against various azo dyes, and ascorbic acid (AA), also known as vitamin C, was found to be best for degradation due to its high photooxidative activity. It is an eco-friendly, edible, and efficient photooxidative material. A photocatalytic box has been developed for the study of organo-photooxidative activity. It was found that when AA was added, degradation efficiency increased from 42 to 95% within 240 min. Different characterization techniques, such as HPLC and GC-MS, were used after degradation for the structural elucidation of degraded products. DFT study was done for the investigation of the mechanistic study behind the degradation process. A statistical tool, RSM, was used for the optimization of parameters (concentration of dye, catalyst, and time). This study develops sustainable and effective solutions for wastewater treatment.

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“…This leads to cleavage of the amino group, saturation of hydrogen radicals. 67 The C–N bonds between the aromatic ring are easily broken, implying that during the photodegradation process, resulted in ring-opening and formation of short linear aliphatic carboxylic acids, inorganic ions, CO 2 , and H 2 O. 66 A summary of the main intermediates is shown in Table 3 , based on the mass spectral m / z values.…”

Section: Resultsmentioning

confidence: 99%

Visible light assisted photooxidative facile degradation of azo dyes in water using a green method

Yousif,

Ibrahim,

Al-Rawi

et al. 2024

RSC Adv.

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Effect of cetylpyridinium chloride on surface passivation and photocatalytic activity of ZnO nanostructures

Cited by 15 publications

References 59 publications

Hydrangea‐like ZnO nanospheres on Al substrates via hydrothermal synthesis for photocatalytic activity

Hydrangea‐like ZnO nanospheres on Al substrates via hydrothermal synthesis for photocatalytic activity

Green Organo-Photooxidative Method for the Degradation of Methylene Blue Dye

Visible light assisted photooxidative facile degradation of azo dyes in water using a green method

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