Efficient construction of bismuth vanadate-based Z-scheme photocatalyst for simultaneous Cr(VI) reduction and ciprofloxacin oxidation under visible light: Kinetics, degradation pathways and mechanism

Chen, Fei; Yang, Qi; Wang, Yali; Yao, Fubing; Ma, Yinghao; Huang, Xiaoding; Li, Xiaoming; Wang, Dongbo; Zeng, Guangming; Yu, Han‐Qing

doi:10.1016/j.cej.2018.04.170

Cited by 243 publications

(29 citation statements)

References 68 publications

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“…Then, two –CO were lost when P1 transformed into P2 [36,37]. Consulting previous studies [38,39], P3 generated through the processes of hydroxylation and the removal of CHNH 2 from P2. In the following step, the P4 was generated and the –CO was eliminated from the piperazine ring [40].…”

Section: Resultsmentioning

confidence: 88%

Facile Synthesis of Visible Light-Induced g-C3N4/Rectorite Composite for Efficient Photodegradation of Ciprofloxacin

et al. 2018

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A novel kind of g-C3N4/rectorite composite with high visible-light photoactivity was developed via a mild and cost effective two-step process. Ciprofloxacin (CIP), a typical antibiotic, was applied to evaluate the photoactivity of the received catalysts. Furthermore, the by-products of CIP photodegradation were analyzed and the possible degradation pathways were also discussed. Compared with bare photocatalysts, the received composite possessed well reusability and higher photoactivity towards CIP. According to the characterization analysis results, layered g-C3N4 was successfully immobilized on layered rectorite, which could not only promote its adsorption capacity but also provide more reactive sites for CIP adsorption and photodegradation. Compared with bare g-C3N4, the photoactivity of the prepared composite was significantly enhanced. The enhancement should be mainly due to the lower recombination rate of photogenerated carriers and the improved adsorption capacity toward CIP. This study demonstrated that the obtained g-C3N4/rectorite composite should be a promising alternative material in wastewater treatment.

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Section: Resultsmentioning

confidence: 88%

Facile Synthesis of Visible Light-Induced g-C3N4/Rectorite Composite for Efficient Photodegradation of Ciprofloxacin

et al. 2018

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“…The Z-type structure effectively separated electrons (e − ) and holes (h + ) and enhanced the photocatalytic capability of AgBr/Ag 2 MoO 4 @InVO 4 composite. InVO 4 has a more negative charge conducting potential (−0.57 eV) than E 0 (O 2 /∙O 2 − ) (−0.046 eV vs. Normal Hydrogen Electrode (NHE)), which can produce the active substance ∙O 2 − [ 40 ]. These free radicals can not only oxidize and degrade CIP, but they also have bactericidal effects.…”

Section: Resultsmentioning

confidence: 99%

“…Nanomaterials 2020, 10, x FOR PEER REVIEW 9 of 12 eV) than E 0 (O2/•O2 -) (-0.046 eV vs. Normal Hydrogen Electrode (NHE)), which can produce the active substance •O2 - [40]. These free radicals can not only oxidize and degrade CIP, but they also have bactericidal effects.…”

Section: Photocatalytic Property Studymentioning

confidence: 99%

Fabrication of a Novel AgBr/Ag2MoO4@InVO4 Composite with Excellent Visible Light Photocatalytic Property for Antibacterial Use

et al. 2020

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A novel AgBr/Ag2MoO4@InVO4 composite photocatalyst with different heterojunction structures was successfully constructed by compounding InVO4 with Ag2MoO4 and AgBr. According to the degradation, antibacterial and free radical trapping data, the photocatalytic antibacterial and antifouling activities of AgBr/Ag2MoO4@InVO4 composite were evaluated, and the corresponding photocatalytic reaction mechanism was proposed. Adding AgBr/Ag2MoO4@InVO4 composite, the degradation rate of ciprofloxacin (CIP) achieved 95.5% within 120 min. At the same time, the antibacterial rates of Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa) achieved 99.99%. The AgBr/Ag2MoO4@InVO4 composite photocatalyst showed promising usage in photocatalytic antibacterial and purification areas.

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“…The photocatalytic activities of BiVO4-(a)~(e) are evaluated using Cr(VI) as target under visible light irradiation shown in Figure 5, and the equilibrium between Cr(VI) and BiVO4-(a)~(e) can be achieved after mixed for 80 min in the presence of citric acid. Figure 5 showed that all the as-synthesized BiVO4 had The reaction rate constants (k) for photocatalytic reduction of Cr(VI) by different products were obtained using the pseudo-first order ki-netic model [1,[31][32][33][34]: ln(C0/Ct) = kt (2) where C0 and Ct denoted the Cr(VI) concentration at the irradiation time of 0 and t min, respectively. The plots of ln(C0/Ct) vs irradiation time (t) as well as the obtained values of k and correlation coefficient (R 2 ) in the presence of different products are shown in Figure 6.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Solid-phase Synthesis of Visible-light-driven BiVO4 Photocatalyst and Photocatalytic Reduction of Aqueous Cr(VI)

Chen

et al. 2019

Bull. Chem. React. Eng. Catal.

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This communication reports a pioneering study on the synthesis of BiVO4 and photocatalytic reduction of Cr(VI)-polluted wastewaters. Monoclinic phase BiVO4 micron-crystals with adjustable morphology were synthesized via a solid-phase route. The structures, morphology, optical properties of the BiVO4 micron-crystals were characterized by X-ray diffraction, field emission scanning electron microscopy, UV-vis diffuse reflectance spectra, Fourier transform infrared spectroscopy spectra, and photocurrent measurements. Besides, their photocatalytic properties were tested for the reduction of aqueous Cr(VI) under visible light ( > 420 nm) irradiation. The photocatalytic tests showed that the photocatalytic activities of BiVO4 powders in aqueous Cr(VI) depended on the dark adsorption amount for Cr(VI) and number of photogenerated carriers. BiVO4-(c) exhibited the highest photocatalytic reduction efficiency that attributed to highest separation and transfer efficiency of photogenerated electrons and holes. Besides, effects of photocatalytic experiment parameters (including dosage of photocatalyst and coexistent anions and cations) on the Cr(VI) removal rate by BiVO4-(c) were also investigated, and •OH play an important role in the BiVO4 photocatalytic reduction Cr(VI).

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Efficient construction of bismuth vanadate-based Z-scheme photocatalyst for simultaneous Cr(VI) reduction and ciprofloxacin oxidation under visible light: Kinetics, degradation pathways and mechanism

Cited by 243 publications

References 68 publications

Facile Synthesis of Visible Light-Induced g-C3N4/Rectorite Composite for Efficient Photodegradation of Ciprofloxacin

Facile Synthesis of Visible Light-Induced g-C3N4/Rectorite Composite for Efficient Photodegradation of Ciprofloxacin

Fabrication of a Novel AgBr/Ag2MoO4@InVO4 Composite with Excellent Visible Light Photocatalytic Property for Antibacterial Use

Solid-phase Synthesis of Visible-light-driven BiVO4 Photocatalyst and Photocatalytic Reduction of Aqueous Cr(VI)

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