Removal of pharmaceutically active compounds (PhACs) and bacteria inactivation from urban wastewater effluents by UVA-LED photocatalysis with Gd3+ doped BiVO4

Orona-Návar, Carolina; Levchuk, Irina; Moreno-Andrés, Javier; Park, Yuri; Mikola, Anna; Mahlknecht, Jürgen; Ornelas‐Soto, Nancy

doi:10.1016/j.jece.2020.104540

Cited by 20 publications

(5 citation statements)

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“…As we know, BiVO 4 with low carrier mobility is unfavorable in regards to photocatalytic activity. Therefore, extensive efforts have been conducted to improve photocatalytic performance, such as loading noble metal, control morphology, exposed specific facets, , doping, , decorating oxide, defect engineering, , and constructing heterojunctions with other semiconductors. − Generally, doping has been proved to be an effective method to improve carrier mobility in the bulk and surface of BiVO 4 . For example, BiVO 4 doped with several metals, such as Cu, Eu, Tb, and Mo, can greatly improve the carrier mobility and thus improve the photocatalytic activity of BiVO 4 .…”

Section: Introductionmentioning

confidence: 99%

Investigation on Al³⁺ and Al₂O₃ Coexist in BiVO₄ for Efficient Methylene Blue Degradation: Insight into Surface States and Charge Separation

et al. 2021

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A series of Al-doped BiVO4 composites have been synthesized via the hydrothermal method for methylene blue (MB) degradation application. The reasons for the improvement of photocatalytic performance was explained from the perspective of optics. Transient photovoltage (TPV) measurements suggested that the surface states have the priority to capture photogenerated carriers, and the Al2O3 surface passivation layer can prolong the lifetime of charge carrier. The results of surface photovoltage (SPV), transient photovoltage (TPV), and surface photocurrent (SPC) measurements suggested that the coexistence of Al3+ and Al2O3 caused by the appropriate doping would improve the transfer property and prolong the lifetime of photogenerated carriers. Finally, the possible photocatalytic mechanism is expounded to illustrate the photogenerated charge behavior under visible light irradiation. This work provides a better understanding of the synergistic effect of Al-doping and Al2O3 passivation layer on enhancing the photocatalytic performance.

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Section: Introductionmentioning

confidence: 99%

Investigation on Al³⁺ and Al₂O₃ Coexist in BiVO₄ for Efficient Methylene Blue Degradation: Insight into Surface States and Charge Separation

et al. 2021

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“…Mineralization was measured by the Non‐Purgeable Organic Carbon (NPOC) method (Shimadzu 2003) using TOC‐ VCPN , Total Organic Analyzer, (Shimadzu, Kyoto, Japan). The aliquots were introduced into 25 mL TOC vial [49] . PS concentration was measured by a UV‐2450 UV‐visible spectrophotometer, (Schimadzu, Kyoto, Japan) at 352 nm as described previously [50] .…”

Section: Resultsmentioning

confidence: 99%

“…The aliquots were introduced into 25 mL TOC vial. [49] PS concentration was measured by a UV-2450 UV-visible spectrophotometer, (Schimadzu, Kyoto, Japan) at 352 nm as described previously. [50] The calculation of the density functional theory was implemented through Gauss-View 6.0 and Gaussian 09 software and the basis set were 6-31 + G (d,p) and B3LYP.…”

Section: Methodsmentioning

confidence: 99%

Heterogeneous Activation of Persulfate by Activated Carbon for Efficient Acetaminophen Degradation: Mechanism, Kinetics, Mineralization, and Density Functional Theory

2022

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Pharmaceutical compounds attracted environmentalists according to their unknown impact on the ecosystem and the increase in their demand. Acetaminophen (ACT) or paracetamol has been detected more than the natural concentration value. To avoid the negative impact of the ACT accumulation into the environment, many treatment techniques have been applied. Among them, advanced oxidation process (AOP) techniques have shown high efficiency to remove ACT. In this study, the ability of AC to catalyze PS by its functional group was evaluated, and the degradation efficiency of ACT was determined by using an activated carbon (AC)/persulfate (PS) system. In addition, the mechanism, kinetics, mineralization, and the density functional theory were also investigated. HPLC was used to measure ACT concentration, and the optimum results in this work were 100 % degradation within 3 minutes at catalysts concentrations AC 8.25 mM/PS 1.65 mM at pH 7 and the mineralization were 24 % after 90 min of reaction. And the degradation pathway of ACT was built based on density functional theory. This study will contribute to clarifying the role of carbon catalysts in the PS oxidation of pollutants. The degradation of ACT by using an AC/PS system is recommended because of the high degradations efficiency, non-toxic byproducts, and environmentally friendly.

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“…Due to its tequartet structure characteristics, its excellent photocatalytic activity is mainly due to the light absorption in the UV region. Recently, Orona-Navar et al 44 also synthesized Gd 3+ doped BiVO 4 powder, which can be used as a potential photocatalyst for the removal of drug-active compounds and bacterial inactivation in actual wastewater. The results showed that 4 mol.% Gd-BiVO 4 could remove 98.3% diclofenac from pure water after 2h photocatalytic reaction.…”

Section: Noble Metal Dopingmentioning

confidence: 99%

Review on Synthesis, Modification, Morphology, and Combination of BiVO₄-based Catalysts for Photochemistry: Status, Advances, and Perspectives

Guan,

Chen,

et al. 2023

Energy Fuels

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Faced with the aggravation of environmental pollution and the looming energy crisis, BiVO4, as an emerging and promising photocatalyst, has drawn more and more attention of researchers. Because of its suitable band gap and special electronic structure, BiVO4 shows excellent photocatalytic activity, which has the advantages of low preparation cost, excellent visible-light absorption, and suitable edge position. Herein, the research status of BiVO4-related catalysts used in photocatalysis was reviewed, including preparations using the hydrothermal method, metal–organic decomposition method, metal doping like noble metal and rare earth, and other structure designs of BiVO4. The modification mechanism of BiVO4 was also further discussed and summarized. The excellent photocatalytic performance of BiVO4 also enables its application to more than just PEC and CO2 reduction. Finally, through the review of this paper, we hope to make a contribution to the ideas and synthesis of BiVO4 photocatalysts with better comprehensive properties.

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Removal of pharmaceutically active compounds (PhACs) and bacteria inactivation from urban wastewater effluents by UVA-LED photocatalysis with Gd3+ doped BiVO4

Cited by 20 publications

References 57 publications

Investigation on Al³⁺ and Al₂O₃ Coexist in BiVO₄ for Efficient Methylene Blue Degradation: Insight into Surface States and Charge Separation

Investigation on Al³⁺ and Al₂O₃ Coexist in BiVO₄ for Efficient Methylene Blue Degradation: Insight into Surface States and Charge Separation

Heterogeneous Activation of Persulfate by Activated Carbon for Efficient Acetaminophen Degradation: Mechanism, Kinetics, Mineralization, and Density Functional Theory

Review on Synthesis, Modification, Morphology, and Combination of BiVO₄-based Catalysts for Photochemistry: Status, Advances, and Perspectives

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Removal of pharmaceutically active compounds (PhACs) and bacteria inactivation from urban wastewater effluents by UVA-LED photocatalysis with Gd3+ doped BiVO4

Cited by 20 publications

References 57 publications

Investigation on Al3+ and Al2O3 Coexist in BiVO4 for Efficient Methylene Blue Degradation: Insight into Surface States and Charge Separation

Investigation on Al3+ and Al2O3 Coexist in BiVO4 for Efficient Methylene Blue Degradation: Insight into Surface States and Charge Separation

Heterogeneous Activation of Persulfate by Activated Carbon for Efficient Acetaminophen Degradation: Mechanism, Kinetics, Mineralization, and Density Functional Theory

Review on Synthesis, Modification, Morphology, and Combination of BiVO4-based Catalysts for Photochemistry: Status, Advances, and Perspectives

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Product

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Investigation on Al³⁺ and Al₂O₃ Coexist in BiVO₄ for Efficient Methylene Blue Degradation: Insight into Surface States and Charge Separation

Investigation on Al³⁺ and Al₂O₃ Coexist in BiVO₄ for Efficient Methylene Blue Degradation: Insight into Surface States and Charge Separation

Review on Synthesis, Modification, Morphology, and Combination of BiVO₄-based Catalysts for Photochemistry: Status, Advances, and Perspectives