A novel ZnO/CQDs/PVDF piezoelectric system for efficiently degradation of antibiotics by using water flow energy in pipeline: Performance and mechanism

Wang, Zichen; Xiang, Manqi; Huo, Bingjie; Wang, Jingxue; Yang, Lina; Ma, Wei; Qi, Jianguang; Wang, Yinglong; Zhu, Zhaoyou; Meng, Fanqing

doi:10.1016/j.nanoen.2022.108162

Cited by 43 publications

(11 citation statements)

References 68 publications

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“…In recent years, in addition to photocatalysis and thermo-catalysis, vibration has become an easily accessible source of energy in life. The piezoelectric catalytic degradation of organic dyes by non-centrosymmetric ferroelectric materials is increasingly being studied. − Piezoelectric catalysis is the application of an external mechanical force to a piezoelectric catalyst, causing the separation of the force-generated electrons (e – ) and holes (h + ) to produce a piezoelectric potential. , Piezoelectric catalysis effectively compensates for the limited availability of photocatalysis in time and place, greatly improving the use of energy with greater controllability. , Some inorganic piezoelectric materials have been reported to be used to achieve piezoelectric catalytic degradation of pollutants, such as BaTiO 3 , ZnO, MoS 2 , NaNbO 3 , and Pb (Zr Ti) O 3 (PZT) . However, many of the reported catalysts have serious limitations in terms of degradation efficiency, material selection, and multifaceted applications.…”

Section: Introductionmentioning

confidence: 99%

NiFe₂O₄ Nanofibers with Surface Oxygen Vacancies for Piezo-Catalytic Hydrogen Peroxide Production

Wang,

et al. 2023

ACS Appl. Nano Mater.

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Piezoelectric catalysis is a way of renewable energy conversion, which involves the application of an external mechanical force to a piezoelectric catalyst. In this work, piezoelectric NiFe 2 O 4 nanofibers with surface oxygen vacancies were successfully synthesized by electrospinning and annealing processes. The introduction of surface oxygen vacancies in NiFe 2 O 4 nanofibers can effectively increase the piezocatalytic degradation rates by 75% for organic dyes and increase the piezoelectric catalytic hydrogen peroxide generation by 39% in pure water. The piezoelectric catalytic mechanism has been discussed. The oxygen defects enhanced the charge transfer rate and the activation of molecular oxygen, providing more reaction sites for the catalytic process. It was confirmed that superoxide radicals ( • O 2 − ) played an important role in the whole catalytic process since force-generated electrons (e − ) and holes (h + ) migrated to the nanofiber surface and redox reactions occurred under the action of the internal electric field. This work provides a piezoelectric catalyst to achieve efficient degradation of dyes and produce hydrogen peroxide.

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Section: Introductionmentioning

confidence: 99%

NiFe₂O₄ Nanofibers with Surface Oxygen Vacancies for Piezo-Catalytic Hydrogen Peroxide Production

Wang,

et al. 2023

ACS Appl. Nano Mater.

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“…[38][39][40][41][42][43] There have already been some catalytic applications of piezoelectric materials. [44][45][46][47][48][49] Coupling piezoelectric and photocatalysis can offer synergistic effects, improving charge separation, enabling self-powered systems and versatile applications. 50 Nonetheless, catalysis enhancement by co-utilizing piezotronic and phototronic effects of ZnO-metal heterojunctions has been rarely described and much less used in civil engineering materials.…”

Section: Introductionmentioning

confidence: 99%

“…This piezoelectric field could regulate the oriented separation and distribution of the electrons and holes during the photocatalytic process, thereby improving photocatalytic performance 38–43 . There have already been some catalytic applications of piezoelectric materials 44–49 . Coupling piezoelectric and photocatalysis can offer synergistic effects, improving charge separation, enabling self‐powered systems and versatile applications 50 .…”

Section: Introductionmentioning

confidence: 99%

Enhanced environmental purification with novel Pd/ZnO nanorod–decorated building materials through piezo‐photocatalytic synergistic effect

Tian,

Wang,

Zheng

et al. 2024

J Am Ceram Soc.

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Integrating photocatalytic technology with building materials is an imperative new trend in the green building field. Here, a novel Pd/ZnO nanorod array‐decorated ceramic tile has been designed for the first time, aiming to purify the surrounding environment. Because of the piezoelectric characteristics of ZnO nanorods, the environmental degradation efficiency of this tile‐based structure under light irradiation could be improved through injecting mechanical vibration stress. The unique piezo‐photocatalytic synergistic effect, due to the piezoelectric field created by bent ZnO nanorods and the Schottky junction formed by the noble metal Pd/ZnO heterostructures, could effectively separate the photoinduced carriers and reduce the rate of recombination, boosting the degradation efficiency. The tile‐based Pd/ZnO reaches the greatest catalytic efficiency of 75% for dye degradation in 30 min when ultrasonic and solar irradiation are applied simultaneously. Present results offer a fresh idea for creating novel piezo‐photocatalytic materials applied in eco‐friendly green buildings.

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“…In particular, as one of the most widely used antibiotics with * Author to whom any correspondence should be addressed. broad-spectrum antibacterial properties, tetracycline (TC) is difficult to be biodegraded [1][2][3][4]. Therefore, in order to replace conventional sewage treatment methods with complex and expensive drawbacks, it is imperative to find a new strategy with straightforward and affordable benefits.…”

Section: Introductionmentioning

confidence: 99%

Manipulating spin-polarization of Co-doped ZnFe₂O₄ for photocatalytic TC degradation

Xie,

Huang,

Zhang

et al. 2024

J. Phys. D: Appl. Phys.

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The rapid recombination of photogenerated electrons and holes was an enormous hindrance constraining the photocatalytic efficiency of photocatalysis, which could be effectively solved by inducing electron spin-polarization. Herein, a series of gradient ZnFe2-xCoxO4 (ZFCO-x) magnetic compounds with spin-polarization properties were synthesized by doping Co cation into ZnFe2O4, as well as the diffraction of X-rays characterization confirmed the successful synthesis of the samples. In photodegradation experiments, ZFCO-0.8 manifested improved photocatalytic degradation efficiency in TC removal experiments with visible-light exposure and external magnetic field. Furthermore, the photodegradation experiments exhibited that the degradation efficiency of ZFCO-x could be raised through Co doping and the photocatalytic degradation efficiency was significantly improved under an external magnetic field. The sample exhibiting the most prominent enhancement was ZFCO-x with doping content of x=0.8, which displayed 48% photocatalytic degradation performance enhancement with a magnetic field. Density functional theory (DFT) was used to calculate the density of states (DOS) of materials. The calculated DOS indicated that ZFCO-0.8 exhibited the most intense spin-polarization consistent with the results of the experiment. This work is anticipated to deliver an operating method for manipulating spin-polarization in photocatalytic semiconductors to improve photocatalytic degradation efficiency.

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A novel ZnO/CQDs/PVDF piezoelectric system for efficiently degradation of antibiotics by using water flow energy in pipeline: Performance and mechanism

Cited by 43 publications

References 68 publications

NiFe₂O₄ Nanofibers with Surface Oxygen Vacancies for Piezo-Catalytic Hydrogen Peroxide Production

NiFe₂O₄ Nanofibers with Surface Oxygen Vacancies for Piezo-Catalytic Hydrogen Peroxide Production

Enhanced environmental purification with novel Pd/ZnO nanorod–decorated building materials through piezo‐photocatalytic synergistic effect

Manipulating spin-polarization of Co-doped ZnFe₂O₄ for photocatalytic TC degradation

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A novel ZnO/CQDs/PVDF piezoelectric system for efficiently degradation of antibiotics by using water flow energy in pipeline: Performance and mechanism

Cited by 43 publications

References 68 publications

NiFe2O4 Nanofibers with Surface Oxygen Vacancies for Piezo-Catalytic Hydrogen Peroxide Production

NiFe2O4 Nanofibers with Surface Oxygen Vacancies for Piezo-Catalytic Hydrogen Peroxide Production

Enhanced environmental purification with novel Pd/ZnO nanorod–decorated building materials through piezo‐photocatalytic synergistic effect

Manipulating spin-polarization of Co-doped ZnFe2O4 for photocatalytic TC degradation

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Resources

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NiFe₂O₄ Nanofibers with Surface Oxygen Vacancies for Piezo-Catalytic Hydrogen Peroxide Production

NiFe₂O₄ Nanofibers with Surface Oxygen Vacancies for Piezo-Catalytic Hydrogen Peroxide Production

Manipulating spin-polarization of Co-doped ZnFe₂O₄ for photocatalytic TC degradation