Fabrication of novel Z-scheme SrTiO3/MnFe2O4 system with double-response activity for simultaneous microwave-induced and photocatalytic degradation of tetracycline and mechanism insight

Wang, Xuan; Jiang, Lei; Li, Kexin; Wang, Jun; Fang, Dawei; Zhang, Yongcai; Tian, Dongmei; Zhang, Zhaohong; Dionysiou, Dionysios D.

doi:10.1016/j.cej.2020.125981

Cited by 92 publications

(17 citation statements)

References 51 publications

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“…It is well-known that the photoluminescence spectrum (PL) is an effective tool to estimate the recombination probability of photo-generated charge carriers [ 42 ]. As the emission signal is derived from the recombination of photo-induced e − , h + pairs, the weaker the emission signal is, the higher the separation efficiency of charge carriers.…”

Section: Resultsmentioning

confidence: 99%

“…Because a smaller semicircle the electrochemical impedance spectroscopy (EIS) Nyquist plot means an overall small charge transfer resistance and a faster interfacial charge transfer, the electron mobility greatly accelerated and the recombination rate of photo-generated electrons and holes effectively inhibited when the MnFe2O4/BGA composite is applied as a visible light ph tocatalyst. It is well-known that the photoluminescence spectrum (PL) is an effective tool to estimate the recombination probability of photo-generated charge carriers [42]. As the emission signal is derived from the recombination of photo-induced e − , h + pairs, the weaker the emission signal is, the higher the separation efficiency of charge carriers.…”

Section: Possible Degradation Mechanismmentioning

confidence: 99%

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The Efficient Photocatalytic Degradation of Organic Pollutants on the MnFe2O4/BGA Composite under Visible Light

Jiang

Lian

2021

Nanomaterials

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The MnFe2O4/BGA (boron-doped graphene aerogel) composite was prepared by hydrothermal treatment of MnFe2O4 particles, boric acid, and graphene oxide. When applied as a photo-Fenton catalyst for the degradation of rhodamine B, the MnFe2O4/BGA composite yielded a degradation efficiency much higher than the sum of those of individual MnFe2O4 and BGA under identical experimental conditions, indicating a strong synergetic effect established between MnFe2O4 and BGA. The catalytic degradation of rhodamine B was proved to follow pseudo first-order kinetics, and the apparent reaction rate constant on the MnFe2O4/BGA composite was calculated to be three- and seven-fold that on BGA and MnFe2O4, respectively. Moreover, the MnFe2O4/BGA composite also demonstrated good reusability and could be reused for four cycles without obvious loss of photocatalytic activity.

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Section: Resultsmentioning

confidence: 99%

Section: Possible Degradation Mechanismmentioning

confidence: 99%

The Efficient Photocatalytic Degradation of Organic Pollutants on the MnFe2O4/BGA Composite under Visible Light

Jiang

Lian

2021

Nanomaterials

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“…In tetracycline degradation by SrTiO 3 /MnFe 2 O 4 microwave-ultraviolet system, trapping experiment shows that • OH takes an important and major role. ESR technique is also supported the above ROS, as the high intensity 1:2:2:1 characteristics signal of DMPO-• OH than 1:1:1:1 signal of DMPO-• O 2 −[28].…”

mentioning

confidence: 53%

“…The enhancement of degradation efficiency is due to the reduction of electron hole recombination rate by the introduction of Gd. The presence of partially filled 4f orbital of Gd facilitates to trap conduction band electron and leads to the formation of superoxide anion radical according to the following way [26]: [28]. Mn-and Ce-codoped BaTiO 3 [29] show photocatalytic activity for the degradation of congo red and titan yellow dye solution as shown in Figure 2.…”

Section: Abo 3 Type Perovskitesmentioning

confidence: 99%

Perovskite Based Photocatalyst for Wastewater Treatment: Green Approach of Environmental Sustainability

Das¹,

Mahata²,

Adak³

2021

AJBES

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Persistent organic substances in wastewater are creating serious problems to the living world as well as to the environment, thereby creating huge detrimental impact on the ecosystem. In view of the grave situation, removal of the persistent organic substances from wastewater effluent holds a great promise to balance the ecosystem and to sustain societal impact value. In this respect, perovskite based photocatalysts have achieved remarkable attention to the scientific community due to their unique structural features and flexibility of composition. Again, surface polarization and electric dipole-dipole interaction in the perovskite material make them attractive for photocatalytic application. This review paper summarized the photocatalytic activity of perovskite materials and their modification to enhance catalytic activity for wastewater treatment. The modification in perovskite has been done to reduce bandgap energy for enhanced visible light activity, separation of charge carriers for their long lifetime, and fast photocatalytic reaction. The recent investigation of ABO 3 type perovskite, layered perovskite, and halide type of perovskite photocatalysts have been discussed detailly. The modification of corresponding perovskites by doped and formation of heterojunction is investigated carefully. The formation and identification of reactive oxygen species (ROS) and their degradation mechanism by trapping experiment and ESR technique has been summarized here. Finally, large scale with energy and environmental related research should be processed for a permanent solution of wastewater problem.

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“…Among the pharmaceutical compounds, tetracycline (TC) is also one of the most important antibiotics. Tetracycline forms antibiotic-resistant genes and ecotoxicity in aquatic systems, and widely exists in soil, groundwater, surface water, and even drinking water [ 76 ]. It is considered a potential hazard to human health and aquatic ecosystems.…”

Section: Removal Of Pharmaceuticalmentioning

confidence: 99%

Recent Advances of Photocatalytic Application in Water Treatment: A Review

et al. 2021

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Photocatalysis holds great promise as an efficient and sustainable oxidation technology for application in wastewater treatment. Rapid progress developing novel materials has propelled photocatalysis to the forefront of sustainable wastewater treatments. This review presents the latest progress on applications of photocatalytic wastewater treatment. Our focus is on strategies for improving performance. Challenges and outlooks in this promising field are also discussed. We hope this review will help researchers design low-cost and high-efficiency photocatalysts for water treatment.

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Fabrication of novel Z-scheme SrTiO3/MnFe2O4 system with double-response activity for simultaneous microwave-induced and photocatalytic degradation of tetracycline and mechanism insight

Cited by 92 publications

References 51 publications

The Efficient Photocatalytic Degradation of Organic Pollutants on the MnFe2O4/BGA Composite under Visible Light

The Efficient Photocatalytic Degradation of Organic Pollutants on the MnFe2O4/BGA Composite under Visible Light

Perovskite Based Photocatalyst for Wastewater Treatment: Green Approach of Environmental Sustainability

Recent Advances of Photocatalytic Application in Water Treatment: A Review

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