ZnO Nanoparticles Coprecipitation with Aluminum and Copper Ions for Efficient Photocatalytic Degradation of Commercial Glyphosate

Krobthong, Sucheewin; Wongrerkdee, Sawitree; Pimpang, Pichitchai; Moungsrijun, Sasimonton; Sujinnapram, Supphadate; Nilphai, Sanpet; Rungsawang, Tipawan; Wongrerkdee, Sutthipoj

doi:10.1080/10584587.2021.1961517

Cited by 5 publications

(4 citation statements)

References 28 publications

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“…The XRD peaks for ZnO precipitation were narrower than those for ZnO combustion, indicating that the crystal size of ZnO precipitation is larger than that of the ZnO combustion. The crystal size (D) was calculated using the Scherrer equation (Equation (1)) [ 26 , 27 , 28 ]: D = kλ/βcosθ where k and λ are the shape factor of XRD measurement (0.89) and the wavelength of the X-ray source (1.5406 Å), respectively. The β and θ are the full width at half maximum (FWHM) and the diffraction angle for each plane, respectively.…”

Section: Resultsmentioning

confidence: 99%

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Krobthong

Rungsawang

Wongrerkdee

2023

Toxics

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ZnO nanoparticles (NPs) were comparatively synthesized via precipitation and combustion techniques. The ZnO NPs synthesized via precipitation and combustion exhibited similar polycrystalline hexagonal wurtzite structures. The large crystal sizes of ZnO NPs were obtained from the ZnO precipitation in comparison with those from the ZnO combustion, while the particle sizes were in the same range. The functional analysis implied that the ZnO structures had surface defects. Moreover, absorbance measurement showed the same absorbance range in ultraviolet light. In the photocatalytic degradation of methylene blue, ZnO precipitation exhibited higher degradation performance than ZnO combustion. This was attributed to the larger crystal sizes of ZnO NPs, which provided an enduring carrier movement at semiconductor surfaces and reduced electron-hole recombination. Thus, the crystallinity of ZnO NPs can be considered an important factor in photocatalytic activity. Furthermore, precipitation is an interesting synthesizing method for preparing ZnO NPs with large crystal sizes.

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Section: Resultsmentioning

confidence: 99%

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Krobthong

Rungsawang

Wongrerkdee

2023

Toxics

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“…Additionally, the remaining concentration to initial concentration (C t /C 0 ) ratios of MB solutions were plotted comparatively, as shown in Figure 2 a, to determine the optimum photocatalyst. The degradation efficiency (DE), which corresponds to the ratio of decomposition to the initial MB molecules, was calculated using Equation (1) [ 15 , 16 , 17 ]. DE (%) = (1 − (C t /C 0 )) × 100% …”

Section: Resultsmentioning

confidence: 99%

“…Additionally, the remaining concentration to initial concentration (C t /C 0 ) ratios of MB solutions were plotted comparatively, as shown in Figure 2a, to determine the optimum photocatalyst. The degradation efficiency (DE), which corresponds to the ratio of decomposition to the initial MB molecules, was calculated using Equation (1) [15][16][17]. The decreasing C t /C 0 trend for the ZnO-AC3% sample was the lowest compared to other conditions, which correlated with higher degradation efficiency (Figure 2b).…”

Section: Resultsmentioning

confidence: 99%

Sustainable Development of ZnO Nanostructure Doping with Water Hyacinth-Derived Activated Carbon for Visible-Light Photocatalysis

Krobthong,

Rungsawang,

Khaodara

et al. 2024

Toxics

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Water hyacinth (Wh) is an aquatic weed considered a nuisance in agricultural and fishing activities. Therefore, this study proposed repurposing this plant into activated carbon (AC). First, the ZnO-AC was precipitated and applied as a photocatalyst for degrading methylene blue. The preliminary photocatalytic test under UV irradiation identified the optimum ZnO-AC photocatalyst to degrade methylene blue (MB). The ZnO-AC photocatalyst recorded the highest degradation rate constant of 11.49 × 10−3 min−1, which was almost two-fold higher than that of ZnO (5.55 × 10−3 min−1). Furthermore, photocatalytic degradation of MB and carbaryl under sunlight irradiation by ZnO-AC demonstrated degradation rate constants of 74.46 × 10−3 min−1 and 8.43 × 10−3 min−1, respectively. To investigate the properties of ZnO-AC, several techniques were performed. ZnO-AC and ZnO exhibited similar results in morphology, crystalline structure, and Raman characteristics. However, ZnO-AC presented smaller pore diameters than those of ZnO, which enlarged pore surface area, and the presence of carbon-related groups implied the presence of AC on ZnO-AC surfaces. This can be attributed to the presence of AC on the ZnO surface, increasing the capture of surrounding toxic molecules and elevating the reaction density. This mechanism is attributed to promoting the degradation of toxic molecules. Therefore, using Wh as a carbon source for the transformation of AC can alternatively solve the problems of aquatic weed management and carbon storage strategies, and the application of AC in ZnO-AC photocatalysts can enhance photocatalysis.

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“…Co-precipitation method was used as this method could yield a significant amount of synthesised powder at a reasonable cost. Besides, this reaction doesn't involve any foreign elements, and water is the only byproduct [24].…”

Section: Methodsmentioning

confidence: 99%

Corrosion behaviour of facile coated ZnO on Mg–Zn–Zr alloy in Ringer’s physiological solution

Tayyaba

Butt

Rehman

et al. 2023

Surface Engineering

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Magnesium alloys have received increasing consideration as biodegradable implants owing to their high specific strength, excellent biocompatibility and non-toxicity but their biomedical applications are limited due to low corrosion resistance which can be improved by surface modification and alloying with suitable elements. Various surface modifications of Mg alloys by deposition of different coatings are used to prevent untimely dissolution. This study presents the corrosion behaviour of a thin ZnO coating deposited on a Mg-Zn-Zr alloy by electrophoretic deposition in the Ringer's solution at 37°C. It was found that the ZnO coating is compact, homogeneous and significantly enhanced its corrosion resistance according to electrochemical test. The polarisation test showed a two orders of magnitude lower current density than that of the bare alloy, while EIS study found a two orders of magnitude greater ZnO coating impedance increasing in bioactivity. The bare specimens showed the development of cracks on the surface whereas the ZnO coated alloy showed no signs of pitting.

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ZnO Nanoparticles Coprecipitation with Aluminum and Copper Ions for Efficient Photocatalytic Degradation of Commercial Glyphosate

Cited by 5 publications

References 28 publications

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Sustainable Development of ZnO Nanostructure Doping with Water Hyacinth-Derived Activated Carbon for Visible-Light Photocatalysis

Corrosion behaviour of facile coated ZnO on Mg–Zn–Zr alloy in Ringer’s physiological solution

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