Dual Z-scheme MoS2/g-C3N4/Bi24O31Cl10 ternary heterojunction photocatalysts for enhanced visible-light photodegradation of antibiotic

Kang, Jin Kyu; Jin, Chongyue; Li, Zhilin; Wang, Min; Chen, Zhiquan; Wang, Youzhao

doi:10.1016/j.jallcom.2020.153975

Cited by 128 publications

(30 citation statements)

References 61 publications

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“…The mechanism of charge transfer was reported to follow a dual Z-scheme pathway as depicted in Figure 14, wherein the photogenerated e − with less reduction ability from the CB of g-C3N4 and MoS2 jump to the VB of Bi24O31Cl10 for recombining with the holes, while the e − with strong reduction ability and h + with strong oxidation stability are spared. Scavenger studies and electron spin resonance spectroscopy confirmed the involvement of • O2 − and • OH radical species, which also confirms the transfer of the photogenerated charge carriers through the dual Z-scheme pathway for ensuring enhanced photocatalytic efficiency [155]. Recent reports on nanostructured heterojunctions of g-C3N4/BiOI show their poor dispersion in water, and they easily aggregate because of their higher surface energy.…”

Section: Integration Of Other Semiconductor Nanostructuressupporting

confidence: 54%

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Advanced Two-Dimensional Heterojunction Photocatalysts of Stoichiometric and Non-Stoichiometric Bismuth Oxyhalides with Graphitic Carbon Nitride for Sustainable Energy and Environmental Applications

et al. 2021

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Semiconductor-based photocatalysis has been identified as an encouraging approach for solving the two main challenging problems, viz., remedying our polluted environment and the generation of sustainable chemical energy. Stoichiometric and non-stoichiometric bismuth oxyhalides (BiOX and BixOyXz where X = Cl, Br, and I) are a relatively new class of semiconductors that have attracted considerable interest for photocatalysis applications due to attributes, viz., high stability, suitable band structure, modifiable energy bandgap and two-dimensional layered structure capable of generating an internal electric field. Recently, the construction of heterojunction photocatalysts, especially 2D/2D systems, has convincingly drawn momentous attention practicably owing to the productive influence of having two dissimilar layered semiconductors in face-to-face contact with each other. This review has systematically summarized the recent progress on the 2D/2D heterojunction constructed between BiOX/BixOyXz with graphitic carbon nitride (g-C3N4). The band structure of individual components, various fabrication methods, different strategies developed for improving the photocatalytic performance and their applications in the degradation of various organic contaminants, hydrogen (H2) evolution, carbon dioxide (CO2) reduction, nitrogen (N2) fixation and the organic synthesis of clean chemicals are summarized. The perspectives and plausible opportunities for developing high performance BiOX/BixOyXz-g-C3N4 heterojunction photocatalysts are also discussed.

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Section: Integration Of Other Semiconductor Nanostructuressupporting

confidence: 54%

“…Figure 14. Schematic representation of the possible steps involved during the photocatalytic process and the charge transfer mechanism in the g-C 3 N 4 /MoS 2 /Bi 24 O 31 Cl 10 composite: (A) traditional pathway and (B) dual Z-scheme pathway.Reprinted from Ref [155]. with permission from Elsevier.…”

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confidence: 99%

Advanced Two-Dimensional Heterojunction Photocatalysts of Stoichiometric and Non-Stoichiometric Bismuth Oxyhalides with Graphitic Carbon Nitride for Sustainable Energy and Environmental Applications

et al. 2021

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“…OH (2.40 eV vs. NHE) are much higher than VB edge potential of g‐C 3 N 4 (1.53 V), g‐C 3 N 4 cannot oxidize OH − or H 2 O via holes . Similarly, E CB of ZnO (‐0.235 eV) is more positive than the potential of O 2 /O 2 .− (E=‐0.33 eV vs. NHE) and ZnO cannot reduce O 2 to produce O 2 .− radicals. Meanwhile, O 2 could be reduced to O 2 .− on CB of g‐C 3 N 4 because of its high negative CB edge potential (−1.07 V) compared to that of O 2 /O 2 .…”

Section: Resultsmentioning

confidence: 96%

“…Since the standard redox potential of H 2 O/ * OH (2.72 eV vs. NHE) and OH À / * OH (2.40 eV vs. NHE) are much higher than VB edge potential of g-C 3 N 4 (1.53 V), g-C 3 N 4 cannot oxidize OH À or H 2 O via holes. [35] Similarly, E CB of ZnO (-0.235 eV) is more positive than the potential of O 2 /O 2 * À (E =-0.33 eV vs. NHE) [36,37] and ZnO on CB of g-C 3 N 4 because of its high negative CB edge potential (À 1.07 V) compared to that of O 2 / O 2 . This type of electron transfer generates reactive oxygen species via the Z-scheme mechanism.…”

Section: Mechanism Of Degradation Of Mg Dyementioning

confidence: 99%

Improved Photocatalytic Activity of g‐C₃N₄/ZnO: A Potential Direct Z‐Scheme Nanocomposite

Ramachandra

Devi

et al. 2020

ChemistrySelect

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In this study, a Z-scheme g-C 3 N 4 /ZnO nanocomposite was synthesized using exfoliation process, which was further characterized using XRD, FT-IR, UV-DRS, SEM-EDAX, PL, EIS, and TGA techniques. The properties of g-C 3 N 4 were enhanced when fabricated with ZnO resulting in a better electron mobility, high redox potential, and excellent semiconducting properties. The performance of this heterostructure was evaluated by photo-catalytic degradation of malachite green (MG) under visible light irradiation. The g-C 3 N 4 /ZnO heterostructure achieved a degradation of 84.3 % within 60 min under visible light irradiation. The degradation reaction follows a pseudo firstorder kinetic model with a reaction rate constant of 0.0329 min À 1. The nanocomposite demonstrated outstanding stability and recyclability.

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“…The United States EPA's Office of Water had established a Maximum Contaminant Level (MCL) for simazine in drinking water of 4.0 parts per billion (ppb). In order to remove simazine from the polluted environment, some techniques have been practiced in the past, such as ozonation, Fenton's oxidation, bioreactor, photodegradation and microbial degradation (Addorisio et al 2011, Kang et al 2020, Sathishkumar et al 2014, Zhu et al 2020b). In addition, membrane treatment technology may play an important role in the removal of simazine from water (Meng et al 2020, Zhang & Jiang 2019, Zhang et al 2021.…”

Section: Introductionmentioning

confidence: 99%

Isolation of 2 simazine-degrading bacteria and development of a microbial agent for bioremediation of simazine pollution

Zhu

Yan

Li³

et al. 2021

An. Acad. Bras. Ciênc.

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Simazine was one of the most commonly used herbicides and was widely used to control broadleaf weeds in agriculture and forestry. Its widespread use had caused wide public concern for its high ecological toxicity. In order to remove simazine residues, 2 strains capable of effectively degrading simazine were isolated from the soil and named SIMA-N5 and SIMA-N9. SIMA-N5 was identifi ed as Bacillus licheniformis by 16SrRNA sequence analysis, and SIMA-N9 was Bacillus altitudinis. According to the degradation ratio of simazine in a certain period of time, the degradation ability of different strains was evaluated. The degradation effi ciency of simazine (5 mg/L) by SIMA-N9 could reach about 98% in 5d, and the strain SIMA-N5 could reach 94% under the same conditions. In addition, the addition of Pennisetum rhizosphere soil during the process of degrading simazine by strain SIMA-N9 could effectively improve the degradation effi ciency. The strain SIMA-N9 has been developed as a microbial agent for the bioremediation of simazine contamination in soil. The new microbial agent developed by using SIMA-N9 has achieved satisfactory application effects. Based on the research results already obtained in this study, it was considered that strain SIMA-N9 and its live bacterial agent could play an important role in bioremediation of simazine pollution. This study could not only provide a set of solutions to the simazine pollution, but also provide a reference for the treatment of other pesticide pollution.

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Dual Z-scheme MoS2/g-C3N4/Bi24O31Cl10 ternary heterojunction photocatalysts for enhanced visible-light photodegradation of antibiotic

Cited by 128 publications

References 61 publications

Advanced Two-Dimensional Heterojunction Photocatalysts of Stoichiometric and Non-Stoichiometric Bismuth Oxyhalides with Graphitic Carbon Nitride for Sustainable Energy and Environmental Applications

Advanced Two-Dimensional Heterojunction Photocatalysts of Stoichiometric and Non-Stoichiometric Bismuth Oxyhalides with Graphitic Carbon Nitride for Sustainable Energy and Environmental Applications

Improved Photocatalytic Activity of g‐C₃N₄/ZnO: A Potential Direct Z‐Scheme Nanocomposite

Isolation of 2 simazine-degrading bacteria and development of a microbial agent for bioremediation of simazine pollution

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Dual Z-scheme MoS2/g-C3N4/Bi24O31Cl10 ternary heterojunction photocatalysts for enhanced visible-light photodegradation of antibiotic

Cited by 128 publications

References 61 publications

Advanced Two-Dimensional Heterojunction Photocatalysts of Stoichiometric and Non-Stoichiometric Bismuth Oxyhalides with Graphitic Carbon Nitride for Sustainable Energy and Environmental Applications

Advanced Two-Dimensional Heterojunction Photocatalysts of Stoichiometric and Non-Stoichiometric Bismuth Oxyhalides with Graphitic Carbon Nitride for Sustainable Energy and Environmental Applications

Improved Photocatalytic Activity of g‐C3N4/ZnO: A Potential Direct Z‐Scheme Nanocomposite

Isolation of 2 simazine-degrading bacteria and development of a microbial agent for bioremediation of simazine pollution

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Improved Photocatalytic Activity of g‐C₃N₄/ZnO: A Potential Direct Z‐Scheme Nanocomposite