Photocatalytic removal of metronidazole and Cr (Ⅵ) by a novel Zn3In2S6/Bi2O3 S-scheme heterojunction: Performance, mechanism insight and toxicity assessment

Wang, Chen; Liu, Haiyan; Wang, Guifang; Fang, Haiyan; Yuan, Xianggen; Lu, Caimei

doi:10.1016/j.cej.2022.138167

Cited by 14 publications

(9 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The surface composition of the fresh and used composite fiber materials comprises the elements of Cd, Bi, N, O, and S, indicating that the composition of 3-CdBi 2 S 4 /NH 2 –PAN remained unchanged after the cycling test (Figure a). It is of note that XPS spectra of the used samples showed new Cr 2p 3/2 and Cr 2p 1/2 splitting peaks at 576.3 and 584.5 eV for Cr(III). , As previously mentioned, ammoniated PAN exhibited a potassium dichromate adsorption effect by electrostatic attraction, which was derived from the protonated amino group. Disparities in the valence of the components between fresh and used samples were observed, attributed to photocorrosion and residue coverage.…”

Section: Resultsmentioning

confidence: 94%

CdBi₂S₄-Decorated Aminated Polyacrylonitrile Nanofiber for Photocatalytic Treatment of Cr(VI) and Tetracycline Wastewater

Du,

Li,

Huang

et al. 2024

Inorg. Chem.

View full text Add to dashboard Cite

The significant threat posed by the high toxicity of heavy metals and antibiotics in water pollutants has prompted a growing emphasis on the development of highly efficient removal methods for these pollutants. In this paper, flexible electrospinning polyacrylonitrile (PAN) nanofiber-supported CdBi 2 S 4 was synthesized via a hydrothermal method, followed by amination treatment with diethylenetriamine (DETA). The as-prepared CdBi 2 S 4 /NH 2 − PAN nanofiber, enriched with sulfur vacancies, demonstrated outstanding visible-light trapping ability and a suitable band gap, leading to efficient separation and transport of photogenerated carriers, ultimately resulting in exceptional photocatalytic capability. The optimal 3-CdBi 2 S 4 /NH 2 −PAN nanofiber achieved impressive reduction rates of 92.26% for Cr(VI) and 96.45% for tetracycline hydrochloride (TCH) within 120 min, which were much higher than those for CdS/NH 2 −PAN, Bi 2 S 3 /NH 2 −PAN, and CdBi 2 S 4 /PAN nanofibers. After five cycles, the removal rate of the CdBi 2 S 4 /NH 2 −PAN nanofiber consistently remained above 90%. Their ease of separation and recovery from the application environment contributes to their practicality. Additionally, compared with conventional suspended particle catalyzers, the composite nanofiber exhibited remarkable flexibility and self-supporting properties.

show abstract

Section: Resultsmentioning

confidence: 94%

CdBi₂S₄-Decorated Aminated Polyacrylonitrile Nanofiber for Photocatalytic Treatment of Cr(VI) and Tetracycline Wastewater

Du,

Li,

Huang

et al. 2024

Inorg. Chem.

View full text Add to dashboard Cite

show abstract

“…As previously described, the generation of IEF of the catalyst leads to transformation from β-Bi 2 O 3 to Bi 2 Sn 2 O 7 at the heterojunction interface, making the energy bands of Bi 2 Sn 2 O 7 bend downward while those of β-Bi 2 O 3 bend upward. Therefore, the directional movement of the built-in electric field can maximize the transfer of electrons from Bi 2 Sn 2 O 7 to β-Bi 2 O 3 . , Moreover, the electrons of β-Bi 2 O 3 (−0.36 V vs NHE) rather than Bi 2 Sn 2 O 7 (+0.11 V vs NHE) can reduce O 2 to form · O 2 – (−0.33 V vs NHE) . Nevertheless, because of the higher VB potential of Bi 2 Sn 2 O 7 (3.08 V vs NHE) compared with that of β-Bi 2 O 3 (1.90 V vs NHE), the former can oxidize H 2 O to produce · OH (2.4 V vs NHE). , These results are consistent with the results of capture tests and ESR analysis.…”

Section: Resultsmentioning

confidence: 99%

“… 108 , 109 Moreover, the electrons of β-Bi 2 O 3 (−0.36 V vs NHE) rather than Bi 2 Sn 2 O 7 (+0.11 V vs NHE) can reduce O 2 to form · O 2 – (−0.33 V vs NHE). 110 Nevertheless, because of the higher VB potential of Bi 2 Sn 2 O 7 (3.08 V vs NHE) compared with that of β-Bi 2 O 3 (1.90 V vs NHE), the former can oxidize H 2 O to produce · OH (2.4 V vs NHE). 111 , 112 These results are consistent with the results of capture tests and ESR analysis.…”

Section: Resultsmentioning

confidence: 99%

Self-Assembly of Bi₂Sn₂O₇/β-Bi₂O₃ S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

et al. 2023

View full text Add to dashboard Cite

Fabrication of S-scheme heterojunctions with enhanced redox capability offers an effective approach to address environmental remediation. In this study, high-performance Bi 2 Sn 2 O 7 /β-Bi 2 O 3 S-scheme heterojunction photocatalysts were fabricated via the in situ growth of Bi 2 Sn 2 O 7 on β-Bi 2 O 3 microspheres. The optimized Bi 2 Sn 2 O 7 /β-Bi 2 O 3 (BSO/BO-0.4) degradation efficiency for tetracycline hydrochloride was 95.5%, which was 2.68-fold higher than that of β-Bi 2 O 3 . This improvement originated from higher photoelectron−hole pair separation efficiency, more exposed active sites, excellent redox capacity, and efficient generation of • O 2 − and • OH. Additionally, Bi 2 Sn 2 O 7 / β-Bi 2 O 3 exhibited good stability against photocatalytic degradation, and the degradation efficiency remained >89.7% after five cycles. The photocatalytic mechanism of Bi 2 Sn 2 O 7 /β-Bi 2 O 3 S-scheme heterojunctions was elucidated. In this study, we design and fabricate high-performance heterojunction photocatalysts for environmental remediation using S-scheme photocatalysts.

show abstract

“…The XPS signal appearing at a higher binding energy for NNO@MIL-88B implies that electron transfer from the Fe III atoms of the subunits to the inserted NO donors. [36][37][38][39]…”

Section: Synthesis Characterization and Structurementioning

confidence: 99%

Visible‐Light‐Driven NO Release from Postmodified MOFs via Photoinduced Electron Transfer for Antibacterial Application

Hao,

Li,

Zhou

et al. 2023

Small

View full text Add to dashboard Cite

Photoresponsive nitric oxide (NO)‐releasing materials (NORMs) enable the spatiotemporal delivery of NO to facilitate their potential applications in physiological conditions. Here two novel metal–organic frameworks (MOFs)‐based photoactive NORMs achieved by the incorporation of prefunctionalized NO donors into the photosensitive Fe‐MOFs via a postmodification strategy is reported. The modified Fe‐MOFs display superior photoactivity of NO release when exposed to visible light (up to 720 nm). Significantly, the visible‐light‐driven NO release properties are further corroborated by their efficient antibacterial performance.

show abstract

Photocatalytic removal of metronidazole and Cr (Ⅵ) by a novel Zn3In2S6/Bi2O3 S-scheme heterojunction: Performance, mechanism insight and toxicity assessment

Cited by 14 publications

References 75 publications

CdBi₂S₄-Decorated Aminated Polyacrylonitrile Nanofiber for Photocatalytic Treatment of Cr(VI) and Tetracycline Wastewater

CdBi₂S₄-Decorated Aminated Polyacrylonitrile Nanofiber for Photocatalytic Treatment of Cr(VI) and Tetracycline Wastewater

Self-Assembly of Bi₂Sn₂O₇/β-Bi₂O₃ S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

Visible‐Light‐Driven NO Release from Postmodified MOFs via Photoinduced Electron Transfer for Antibacterial Application

Contact Info

Product

Resources

About

Photocatalytic removal of metronidazole and Cr (Ⅵ) by a novel Zn3In2S6/Bi2O3 S-scheme heterojunction: Performance, mechanism insight and toxicity assessment

Cited by 14 publications

References 75 publications

CdBi2S4-Decorated Aminated Polyacrylonitrile Nanofiber for Photocatalytic Treatment of Cr(VI) and Tetracycline Wastewater

CdBi2S4-Decorated Aminated Polyacrylonitrile Nanofiber for Photocatalytic Treatment of Cr(VI) and Tetracycline Wastewater

Self-Assembly of Bi2Sn2O7/β-Bi2O3 S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

Visible‐Light‐Driven NO Release from Postmodified MOFs via Photoinduced Electron Transfer for Antibacterial Application

Contact Info

Product

Resources

About

CdBi₂S₄-Decorated Aminated Polyacrylonitrile Nanofiber for Photocatalytic Treatment of Cr(VI) and Tetracycline Wastewater

CdBi₂S₄-Decorated Aminated Polyacrylonitrile Nanofiber for Photocatalytic Treatment of Cr(VI) and Tetracycline Wastewater

Self-Assembly of Bi₂Sn₂O₇/β-Bi₂O₃ S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline