Development of surface-modified galvanised steel as an immobilised photocatalyst for textile wastewater treatment

Manojkumar, P.; Pranav, S.; Premchand, C.; Lokeshkumar, E.; Rameshbabu, N.

doi:10.1016/j.inoche.2022.110056

Cited by 6 publications

(2 citation statements)

References 37 publications

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“…These popular materials are often studied for their photocatalytic properties due to their wide bandgap energy (E g ) and high surface area resulting in efficient light absorption and enhanced catalytic activity, respectively. Among these, ZnO is a well-known multifunctional-semiconductor material that has been widely investigated for its usage as a photocatalyst [ 7 ] because of its good photocatalytic activity, low-cost material, and non-toxicity [ 8 , 9 , 10 ]. Importantly, suitable synthesis methods have been studied, such as microwave synthesis, laser-ablation, hydrothermal, sol-gel, precipitation, and combustion [ 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…The predominant focus of current research is on the photocatalytic properties of materials based on wide-gap semiconductor oxides, including TiO 2 , ZnO, SnO 2 [ 1 , 2 , 3 ], independent of their other functional properties related to adsorption, sensor capabilities, etc. Apparently, this circumstance is due to differences in functional media: the photocatalytic reactions are carried out mainly in an aqueous medium [ 4 , 5 ], while the natural environment for the operation of the devices based on semiconductor oxides, except for special cases, is not aqueous.…”

Section: Introductionmentioning

confidence: 99%

Effects of Plasma Treatment on the Surface and Photocatalytic Properties of Nanostructured SnO2–SiO2 Films

et al. 2023

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In this work, we study the effects of treating nanostructured SnO2–SiO2 films derived by a sol-gel method with nitrogen and oxygen plasma. The structural and chemical properties of the films are closely investigated. To quantify surface site activity in the films following treatment, we employed a photocatalytic UV degradation test with brilliant green. Using X-ray photoelectron spectroscopy, it was found that treatment with oxygen plasma led to a high deviation in the stoichiometry of the SnO2 surface and even the appearance of a tin monoxide phase. These samples also exhibited a maximum photocatalytic activity. In contrast, treatment with nitrogen plasma did not lead to any noticeable changes in the material. However, increasing the power of the plasma source from 250 W to 500 W led to the appearance of an SnO fraction on the surface and a reduction in the photocatalytic activity. In general, all the types of plasma treatment tested led to amorphization in the SnO2–SiO2 samples.

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Enhanced photocatalytic degradation of methylene blue from aqueous solution using green synthesized ZnO nanoparticles

Ramasubramanian,

Selvaraj,

Chinnathambi

et al. 2023

Biomass Conv. Bioref.

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Development of surface-modified galvanised steel as an immobilised photocatalyst for textile wastewater treatment

Cited by 6 publications

References 37 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

Effects of Plasma Treatment on the Surface and Photocatalytic Properties of Nanostructured SnO2–SiO2 Films

Enhanced photocatalytic degradation of methylene blue from aqueous solution using green synthesized ZnO nanoparticles

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