Construction of novel microwave-photo dual responsive Z-scheme CdWO4/ZnFe2O4 system using isoelectric point method for antibiotic degradation and mechanism perspective

Zhang, Shuang; Yao, Hongfeng; Zhai, Hanfei; Wang, Xuan; Wang, Jun; Fang, Dawei; Zhang, Yongcai; Zhang, Zhaohong; Tie, Mei

doi:10.1016/j.jece.2022.108220

Cited by 5 publications

(2 citation statements)

References 59 publications

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“…In addition, the peaks related to hexagonal ZnO and orthorhombic Bi 2 WO 6 were found in the diffraction patterns of asprepared composites, unveiling the successful formation of BWZ composites. Moreover, the crystalline size (D) of the photocatalysts can be calculated by Scherrer's formula [22,23]: D = Kλ/βcosθ, where K is the particle shape-constant (normally taken as 0.9), λ is the wavelength of X-ray, β is the full width at half maximum of diffraction peak and θ is the diffraction peak. The average crystallite size of Bi 2 WO 6 and ZnO are 34.7 nm and 18.8 nm, respectively.…”

Section: Characterization Of Prepared Photocatalystsmentioning

confidence: 99%

3-D/3-D Z-Scheme Heterojunction Composite Formed by Marimo-like Bi2WO6 and Mammillaria-like ZnO for Expeditious Sunlight Photodegradation of Dimethyl Phthalate

et al. 2022

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In the present work, we assessed the photocatalytic performance of the new 3-D/3-D Z-scheme heterojunction composite for the degradation of dimethyl phthalate (DMP). The composite was composed by marimo-like Bi2WO6 and mammillaria-like ZnO which was named BWZ. The composite was successfully fabricated using a hydrothermal-precipitation method and analyzed via different characterization techniques. Under natural sunlight irradiation, the optimal composite with 20 wt% of Bi2WO6/ZnO (20-BWZ) exhibited a photodegradation rate constant of 0.0259 min−1, which reached 2.3 and 5.9-folds greater than those of pure ZnO (0.0112 min−1) and Bi2WO6 (0.0044 min−1), respectively. That was predominantly attributed to the formation of a Z-scheme photocatalytic system in the as-synthesized composite reduced the charge carrier recombination and accelerated the photoactivity. Transient photocurrent response and electrochemical impedance spectroscopy analyses were performed to confirm this conclusion. The reusability test indicated that the 20-BWZ had no significant deactivation after four runs, which inferred good stability of the as-prepared composite. Furthermore, the quenching test demonstrated that the photogenerated hole, superoxide anion radical and hydroxyl radical were all involved in the photodegradation of DMP, among which •OH was the principal reactive species. This work revealed that the as-prepared BWZ composites have great potential applications for the degradation of refractory pollutants in the environmental remediation field.

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Section: Characterization Of Prepared Photocatalystsmentioning

confidence: 99%

3-D/3-D Z-Scheme Heterojunction Composite Formed by Marimo-like Bi2WO6 and Mammillaria-like ZnO for Expeditious Sunlight Photodegradation of Dimethyl Phthalate

et al. 2022

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“…The use of a single advanced oxidation processes (AOP) is associated with drawbacks such as prolonged reaction time, limited efficiency, and narrow applicability. 19 Therefore, the combined utilization of multiple AOPs has garnered considerable attention due to their potential for synergistic effects and improved problem-solving capabilities. 20 Activated persulfate and electrochemical oxidation technologies are advanced oxidation processes effective in removing contaminants from water.…”

Section: Introductionmentioning

confidence: 99%