New insight into the kinetic study on the different loadings of the CuO/CNT catalyst and its optimization for <i>p</i>-chloroaniline photodegradation

Khusnun, N.F.; Jalil, Aishah Abdul; Ahmad, Arshad; Ikram, Muhammad; Hassan, N.S.; Nabgan, Walid; Bahari, Mahadi B.; Kasmani, Rafiziana Md.; Norazahar, Norafneeza

doi:10.1039/d2na00216g

Cited by 2 publications

(1 citation statement)

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“…However, as the amount of the catalyst increases further, the degradation rate decreases due to the aggregation of catalyst particles, which reduces the accessibility of the active sites for organic pollutants . Furthermore, excess catalysts can hinder light penetration, impeding the effective utilization of UV irradiation and subsequently reducing the degradation efficiency (Figure ). With an increase in the catalyst concentration from 0.06 to 0.1 g/L, the removal of MB dye under UV irradiation increases from 93.58 to 100%, respectively, after 8 min for compound 3 and from 93.69 to 100%, respectively, after 10 min for compound 5 .…”

Section: Resultsmentioning

confidence: 99%

Copper-Based Two-Dimensional Metal–Organic Frameworks for Fenton-like Photocatalytic Degradation of Methylene Blue under UV and Sunlight Irradiation

Kim,

Lee,

Noh

et al. 2024

Inorg. Chem.

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To efficiently degrade organic pollutants, photocatalysts must be effective under both ultraviolet (UV) radiation and sunlight. We synthesized a series of new metal−organic frameworks by using mild hydrothermal conditions. These frameworks incorporate three distinct bipyridyl ligands: pyrazine (pyr), 4,4′-bipyridine (bpy), and 1,2-bis(4-pyridyl)ethane (bpe). The resulting compounds are denoted as and 5) and Hf (2, 4, and 6)]. All six compounds exhibited a two-dimensional crystal structure comprising infinitely nonintersecting linear chains. Compound 3 achieved 100% degradation of methylene blue (MB) after 8 min under UV irradiation and 100 min under natural sunlight in the presence of H 2 O 2 as the electron acceptor. For compound 5, 100% MB degradation was achieved after 120 min under sunlight and 10 min under UV light. Moreover, reactive radical tests revealed that the dominant species involved in photocatalytic degradation are hydroxyl (•OH), superoxide radicals (•O 2 − ), and photogenerated holes (h + ). The photodegradation process followed pseudo-first-order kinetics, with photodegradation rate constants of 0.362 min −1 (0.039 min −1 ) for 3 and 0.316 min −1 (0.033 min −1 ) for 5 under UV (sunlight) irradiation. The developed photocatalysts with excellent activity and good recyclability are promising green catalysts for degrading organic pollutants during environmental decontamination.

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Section: Resultsmentioning

confidence: 99%

Copper-Based Two-Dimensional Metal–Organic Frameworks for Fenton-like Photocatalytic Degradation of Methylene Blue under UV and Sunlight Irradiation

Kim,

Lee,

Noh

et al. 2024

Inorg. Chem.

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In situ fabrication of WO3/CuWO4/CuO heterojunction photoanode for boosted interfacial charge transfer and enhanced photoelectrochemical water splitting

Li,

Hu,

Liu

et al. 2024

International Journal of Hydrogen Energy

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New insight into the kinetic study on the different loadings of the CuO/CNT catalyst and its optimization for p-chloroaniline photodegradation

Abstract: The effect of copper (Cu) content on Cu oxide loaded onto carbon nanotube (CuO/CNT) catalyst on mechanistic, kinetics, and photonic efficiency of photodegradation of p-chloroaniline (PCA) under visible (VIS) and...

Cited by 2 publications

References 36 publications

Copper-Based Two-Dimensional Metal–Organic Frameworks for Fenton-like Photocatalytic Degradation of Methylene Blue under UV and Sunlight Irradiation

Copper-Based Two-Dimensional Metal–Organic Frameworks for Fenton-like Photocatalytic Degradation of Methylene Blue under UV and Sunlight Irradiation

In situ fabrication of WO3/CuWO4/CuO heterojunction photoanode for boosted interfacial charge transfer and enhanced photoelectrochemical water splitting

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