Fabrication and characterization of copper (II) oxide/iron (III) oxide thin film heterostructures for trace arsenic (III) removal in water

Pastrana, Elizabeth C.; Loarte, Steveen J.; Gonzales-Lorenzo, Carlos D.; Alta, Roxana Yesenia Pastrana; Alarcón, Hugo

doi:10.1016/j.tsf.2020.138440

Cited by 8 publications

(3 citation statements)

References 66 publications

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“…This band gap energy value for CuO nanoparticles is slightly higher than theoretical bandgap value 1.8 eV. Generally, the band gap increases with decreasing particle size due to quantum confinement [15]. But the band gap does not follow the same trend always, and it can be affected by other parameters, also like defects present in the oxides.…”

Section: 3optical Propertiesmentioning

confidence: 63%

Structure Composition, Morphology and Optical Properties of Chemically Synthesized CuO Nanoparticle

Arulkumar,

Thanikaikarasan,

Ahamad

et al. 2023

JNMES

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In this study, cupric oxide nanoparticles was synthesized by chemical precipitation method. Relevant unique structural, surface morphology with chemical composition and optical properties are investigated. The improvement in their crystallinity and purification can be further attained by post calcinations process. The most two prominent intense peaks (-111) and ( 111), were found, indicated a crystalline form of CuO. The SEM images showed that the distribution of crystalline particles which are agglomeration with cluster shape. The EDX analysis of chemical composition percentage found to be the copper is completely oxidized with containing of dual element (Cu and O).

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Section: 3optical Propertiesmentioning

confidence: 63%

Structure Composition, Morphology and Optical Properties of Chemically Synthesized CuO Nanoparticle

Arulkumar,

Thanikaikarasan,

Ahamad

et al. 2023

JNMES

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“…Moreover, Pastrana et al [71] fabricated heterostructures based on CuO/α-Fe 2 O 3 by dip-coating technique. Due to their rough structure, these heterostructures present efficient and fast arsenic removal performances compared to pure oxides.…”

Section: Heterostructures Based On Cuomentioning

confidence: 99%

“…The higher removal efficiency of heterostructures compared to pristine oxides is mainly due to roughness and the slower recombination of electron-hole pairs for the heterostructures. Many researchers claim that the increase of the surface roughness may favor the adsorption of molecules on the surface films [71] and that the inhibition of recombination of charge carriers will produce a more significant amount of reactive oxygen species, which are intermediates to oxidize As(III) to As(V) [72]. Thin Film Deposition -Fundamentals, Processes, and Applications…”

Section: Heterostructures Based On Cuomentioning

confidence: 99%

Photoactive Heterostructures Based on α-Fe₂O₃ and CuO Thin Films for the Removal of Pollutants from Aqueous Solutions

Pastrana¹,

Ramos²,

Sánchez³

et al. 2023

Thin Films - Deposition Methods and Applications

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Heterostructured photoactive nanomaterials represent innovative construction to absorb UV and UV-vis light. This feature makes heterostructures exciting candidates for environmental photocatalytic applications such as organic pollutants degradation and removal of heavy metals, among others. Therefore, the efficient design of heterostructures based on thin films of oxide semiconductors will allow obtaining a novel material with outstanding properties. This work presents a review of the current heterostructures based on α-Fe2O3 and CuO thin films, which were deposited onto different substrates using physics and chemistry routes. Moreover, we will discuss the key factors to promote structural and morphology control and the drawbacks such as low absorption of the solar spectra, low active surface area, and charge carrier recombination. Finally, the relevance of the results and future directions of the heterostructures as materials for the purification of aqueous systems were discussed.

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Analysis of the photocurrent from CuO/TiO2 nanostructured photoelectrodes to elucidate the benefits of nanocrystal size decrease

et al. 2022

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Fabrication and characterization of copper (II) oxide/iron (III) oxide thin film heterostructures for trace arsenic (III) removal in water

Cited by 8 publications

References 66 publications

Structure Composition, Morphology and Optical Properties of Chemically Synthesized CuO Nanoparticle

Structure Composition, Morphology and Optical Properties of Chemically Synthesized CuO Nanoparticle

Photoactive Heterostructures Based on α-Fe₂O₃ and CuO Thin Films for the Removal of Pollutants from Aqueous Solutions

Analysis of the photocurrent from CuO/TiO2 nanostructured photoelectrodes to elucidate the benefits of nanocrystal size decrease

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Fabrication and characterization of copper (II) oxide/iron (III) oxide thin film heterostructures for trace arsenic (III) removal in water

Cited by 8 publications

References 66 publications

Structure Composition, Morphology and Optical Properties of Chemically Synthesized CuO Nanoparticle

Structure Composition, Morphology and Optical Properties of Chemically Synthesized CuO Nanoparticle

Photoactive Heterostructures Based on α-Fe2O3 and CuO Thin Films for the Removal of Pollutants from Aqueous Solutions

Analysis of the photocurrent from CuO/TiO2 nanostructured photoelectrodes to elucidate the benefits of nanocrystal size decrease

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Product

Resources

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Photoactive Heterostructures Based on α-Fe₂O₃ and CuO Thin Films for the Removal of Pollutants from Aqueous Solutions