Electrodeposition of nanostructured Bi2MoO6@Bi2MoO6–x homojunction films for the enhanced visible-light-driven photocatalytic degradation of antibiotics

Gómez, Elvira; Cestaro, Roberto; Philippe, Laëtitia; Serrà, Albert

doi:10.1016/j.apcatb.2022.121703

Cited by 50 publications

(6 citation statements)

References 61 publications

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“…Nevertheless, we consider the results reported here as a proof-of-concept that the in situ approach is a viable route for achieving heterojunction effects on thin-film photocatalysts for application in pollutant degradation. This is proven by data in Table 2 where a comparison is reported between the best results we obtained with the (FeOx/g-C3N4)in +H2O2 (5 × 10 −4 M) samples and literature data (90)(91)(92)(93)(94)(95)(96)(97) for the removal of ciprofloxacin in water and additional information can also be found from literature [88][89][90][91].…”

Section: Photocatalytic Activitysupporting

confidence: 66%

Towards the Development of a Z-Scheme FeOx/g-C3N4 Thin Film and Perspectives for Ciprofloxacin Visible Light-Driven Photocatalytic Degradation

Fendrich,

Bajpai,

Edla

et al. 2023

Applied Sciences

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Thermally synthesized graphitic carbon nitride (g-C3N4) over pulsed laser deposition (PLD) produced urchin-like iron oxide (FeOx) thin films were fabricated via in situ and ex situ processes. Materials characterisation revealed the formation of the graphitic allotrope of C3N4 and a bandgap Eg for the combined FeOx/g-C3N4 of 1.87 and 1.95 eV for each of the different fabrication strategies. The in situ method permitted to develop a novel petal-like morphology, whereas for the ex situ method, a morphological mixture between FeOx bulk and g-C3N4 was observed. Given the improved optical and morphological properties of the in situ film, it was employed as a proof of concept for the direct photocatalysis and photo-Fenton removal of ciprofloxacin antibiotic (CIP) under visible light irradiation. Improved photocatalytic activity (rate constant k = 8.28 × 10−4 min−1) was observed, with further enhancement under photo-Fenton conditions (k = 2.6 × 10−3 min−1), in comparison with FeOx + H2O2 (k = 1.6 × 10−3 min−1) and H2O2 only (k = 1.3 × 10−4 min−1). These effects demonstrate the in situ methodology as a viable route to obtain working heterojunctions for solar photocatalysis in thin-film materials, rather than the more common powder materials.

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Section: Photocatalytic Activitysupporting

confidence: 66%

Towards the Development of a Z-Scheme FeOx/g-C3N4 Thin Film and Perspectives for Ciprofloxacin Visible Light-Driven Photocatalytic Degradation

Fendrich,

Bajpai,

Edla

et al. 2023

Applied Sciences

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“…Among the bismuth-based materials, Bi x O y I z (BiOI, Bi 5 O 7 I) has gained consistent attention because its energy band structures are closely associated with its stoichiometric ratio and can be adjusted easily by in situ thermal induction. , Furthermore, bismuth molybdate (Bi 2 MoO 6 ), another essential member of the Bi-based family, has [Bi 2 O 2 ] 2+ layered units for the formation of structural sharing layers and matchable energy band positions with Bi x O y I z to construct different types of heterojunctions. , Therefore, constructing Bi 2 MoO 6 /Bi x O y I z bi-bismuth-based heterojunction nanofibers is an excellent option for addressing the above challenges and achieving the synergistic regulation toward efficient visible-light-driven photocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Engineering of Energy Band Alignment and Interfacial Electric Field Distribution over Bi-bismuth-Based Hetero-nanofibers for Boosting Visible-Light-Driven Photocatalytic Ammonia Synthesis and Antibiotic Removal

Wu,

Li,

et al. 2024

Langmuir

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Synergistic engineering of energy band alignment and interfacial electric field distribution is essential for photocatalyst design but is still challenging because of the limitation on refined regulation in the nanoscale. This study addresses the issue by employing surface modification and thermal-induced phase transformation in Bi2MoO6/Bi x O y I z hetero-nanofiber frameworks. The energy band alignment switches from a type-II interface to a Z-scheme contact with stronger redox potentials and inhibited electron traps, and the optimized built-in electric field distribution could be reached based on experimental and theoretical investigations. The engineered hetero-nanofibers exhibit outstanding visible-light-driven photocatalytic nitrogen reduction activity (605 μmol/g/h) and tetracycline hydrochloride removal rate (81.5% within 30 min), ranking them among the top-performing bismuth series materials. Furthermore, the photocatalysts show promise in activating advanced oxidants for efficient organic pollutant degradation. Moreover, the Bi2MoO6/Bi5O7I hetero-nanofibers possess good recycling stability owing to their three-dimensional network structure. This research offers valuable insights into heterojunction design for environmental remediation and industrial applications.

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“…[ 12 − 16 ] Bismuth molybdate (Bi 2 MoO 6 ), a famous member of the Aurivillius‐related oxide family, including intergrowth of [Bi 2 O 2 ] 2+ sheets and perovskite‐like [MoO 4 ] 2− slabs, is a potential catalyst for piezocatalytic or photocatalytic field. [ 17 − 20 ] For example, Dong et al prepared the 2D piezoelectric Bi 2 MoO 6 for glutathione‐enhanced sonodynamic therapy, which derived from piezoelectric polarization and band tilting to accelerate toxic reactive oxygen species production. [ 21 ] Ji et al introduced an ultrathin Bi 2 MoO 6 catalyst for enhancing the piezo‐photocatalytic elimination of Rhodamine B via producing a built‐in piezoelectric field to drive charge transfer.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Reconfiguration and Local Polarization of NiFe‐Layered Double Hydroxide‐Bi₂MoO₆₋_x Heterojunction for Enhancing Piezo‐Photocatalytic Nitrogen Oxidation to Nitric Acid

Deng,

Chen,

Cui

et al. 2024

Advanced Science

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Constructing heterojunctions with vacancies has garnered substantial attention in the field of piezo‐photocatalysis. However, the presence of interfacial vacancies can serve as charge‐trapping sites, leading to the localization of electrons and hindering interfacial charge transfer. Herein, dual oxygen vacancies in the NiFe‐layered double hydroxide and Bi2MoO6−x induced interfacial bonds have been designed for the piezo‐photocatalytic N2 oxidation to NO3−. Fortunately, it achieves sensational nitric acid production rates (7.23 mg g−1 h−1) in the absence of cocatalysts and sacrificial agents, which is 6.03 times of pure Bi2MoO6 that under ultrasound and light illumination. Theoretical and experimental results indicate that interfacial bonds act as “charge bridge” and “strain center” to break the carrier local effect and negative effects with piezocatalysis and photocatalysis for promoting exciton dissociation and charge transfer. Moreover, the strong electronic interaction of the interfacial bond induces internal reconstruction under ultrasound for promoting the local polarization and adsorption of N2, which accelerates the fracture of the N≡N bonds and reduces the activation energy of the reaction. The research not only establishes a novel approach for optimizing the combined effects of piezo‐catalysis and photocatalysis, but also achieves equilibrium between the synergistic impacts of vacancies and heterojunctions.

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Electrodeposition of nanostructured Bi2MoO6@Bi2MoO6–x homojunction films for the enhanced visible-light-driven photocatalytic degradation of antibiotics

Cited by 50 publications

References 61 publications

Towards the Development of a Z-Scheme FeOx/g-C3N4 Thin Film and Perspectives for Ciprofloxacin Visible Light-Driven Photocatalytic Degradation

Towards the Development of a Z-Scheme FeOx/g-C3N4 Thin Film and Perspectives for Ciprofloxacin Visible Light-Driven Photocatalytic Degradation

Synergistic Engineering of Energy Band Alignment and Interfacial Electric Field Distribution over Bi-bismuth-Based Hetero-nanofibers for Boosting Visible-Light-Driven Photocatalytic Ammonia Synthesis and Antibiotic Removal

Dynamic Reconfiguration and Local Polarization of NiFe‐Layered Double Hydroxide‐Bi₂MoO₆₋_x Heterojunction for Enhancing Piezo‐Photocatalytic Nitrogen Oxidation to Nitric Acid

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Electrodeposition of nanostructured Bi2MoO6@Bi2MoO6–x homojunction films for the enhanced visible-light-driven photocatalytic degradation of antibiotics

Cited by 50 publications

References 61 publications

Towards the Development of a Z-Scheme FeOx/g-C3N4 Thin Film and Perspectives for Ciprofloxacin Visible Light-Driven Photocatalytic Degradation

Towards the Development of a Z-Scheme FeOx/g-C3N4 Thin Film and Perspectives for Ciprofloxacin Visible Light-Driven Photocatalytic Degradation

Synergistic Engineering of Energy Band Alignment and Interfacial Electric Field Distribution over Bi-bismuth-Based Hetero-nanofibers for Boosting Visible-Light-Driven Photocatalytic Ammonia Synthesis and Antibiotic Removal

Dynamic Reconfiguration and Local Polarization of NiFe‐Layered Double Hydroxide‐Bi2MoO6−x Heterojunction for Enhancing Piezo‐Photocatalytic Nitrogen Oxidation to Nitric Acid

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Dynamic Reconfiguration and Local Polarization of NiFe‐Layered Double Hydroxide‐Bi₂MoO₆₋_x Heterojunction for Enhancing Piezo‐Photocatalytic Nitrogen Oxidation to Nitric Acid