Construction of Z-scheme g-C3N4 / MnO2 /GO ternary photocatalyst with enhanced photodegradation ability of tetracycline hydrochloride under visible light radiation

Du, Chunyan; Zhang, Zhuo; Tan, Shiyang; Yu, Guanlong; Hong, Chen; Zhou, Lu; Yu, Lie; Su, Yihai; Zhang, Yin; Deng, Fangfang; Wang, Shitao

doi:10.1016/j.envres.2021.111427

Cited by 85 publications

(26 citation statements)

References 69 publications

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“…Among them, the Z-scheme heterojunction photocatalysts stand out for their excellent sensitivity to visible-light induction and are highly reactive to photogenerated charge carriers. − Hence, the reliable Z-scheme heterojunction photocatalyst is exactly what we seek, which has good development potential. Successful cases have been demonstrated in previous research, such as BiOI/ECN, Bi 2 O 3 /g-C 3 N 4 , Bi 2 WO 6 /g-C 3 N 4 , MoO 3 /Ag/C 3 N 4 , MnO 2 /GO/g-C 3 N 4 , Sn 3 O 4 /g-C 3 N 4 , and so on.…”

Section: Introductionmentioning

confidence: 66%

Peroxymonosulfate-Assisted BiVO₄/Exfoliated g-C₃N₄ Heterojunction for High-Performance Photodegradation of Tetracycline Induced by Visible Light

Huang

Liu

Zhang

et al. 2022

Ind. Eng. Chem. Res.

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Antibiotic residues entering the ecological environment not only cause serious environmental pollution but also may cause the development of resistance genes and other ecological risks. Therefore, the degradation of antibiotic contaminants has become a research hot spot. Herein, a new Z-scheme BiVO4/exfoliated g-C3N4 heterojunction photocatalyst was synthesized for efficient tetracycline photodegradation with the assistance of peroxymonosulfate under visible light irradiation. The influence of different key environmental factors, including peroxymonosulfate concentrations, coexisting ions, and solution pH, on the photodegradation efficiency of tetracycline was comprehensively studied. The optimized BiVO4/exfoliated g-C3N4–0.6 was demonstrated to exhibit excellent photodegradation performance of tetracycline with an apparent kinetic constant of ca. 0.128 min–1 with 0.3 mM peroxymonosulfate, which was ca. 3 times of exfoliated g-C3N4 (0.0415 min–1) under the same conditions and about 16 times and 5 times of bulk g-C3N4 (0.0080 min–1) and exfoliated g-C3N4 (0.0285 min–1) without peroxymonosulfate, respectively. The BiVO4/exfoliated g-C3N4–0.6 showed only about 5% reduction in the degradation efficiency of tetracycline after six consecutive cycle experiments. The free radical scavenging test and electron spin resonance characterization results suggested that •O2 –, h+, •SO4 –, •OH, and 1O2 were all involved in the catalytic oxidative process of tetracycline in the BiVO4/exfoliated g-C3N4–0.6, peroxymonosulfate and light reaction system. This study not only offers an attractive Z-scheme heterojunction photocatalyst for tetracycline degradation but also demonstrates a promising way to use peroxymonosulfate for advanced wastewater treatment.

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Section: Introductionmentioning

confidence: 66%

Peroxymonosulfate-Assisted BiVO₄/Exfoliated g-C₃N₄ Heterojunction for High-Performance Photodegradation of Tetracycline Induced by Visible Light

Huang

Liu

Zhang

et al. 2022

Ind. Eng. Chem. Res.

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“…This might be because the anionic charges compete with pollutants for active sites on the catalyst surface, thereby inhibiting the degradation of TC-HCl [ 49 ]. The cations, including Ca 2+ , Mg 2+ , Al 3+ , and Mn 2+ , all seriously inhibited the degradation of TC-HCl because they can combine with TC-HCl to form metal complexes, thus reducing the rate of degradation [ 50 ]. The results of using different water sources are shown in Figure 10 b.…”

Section: Resultsmentioning

confidence: 99%

2D/2D Phosphorus-Doped g-C3N4/Bi2WO6 Direct Z-Scheme Heterojunction Photocatalytic System for Tetracycline Hydrochloride (TC-HCl) Degradation

Yin

Sun

et al. 2022

IJERPH

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Bi2WO6-based heterojunction photocatalyst for antibiotic degradation has been a research hotspot, but its photocatalytic performance needs to be further improved. Therefore, 2D/2D P-doped g-C3N4/Bi2WO6 direct Z-scheme heterojunction photocatalysts with different composition ratios were prepared through three strategies of phosphorus (P) element doping, morphology regulation, and heterojunction, and the efficiency of its degradation of tetracycline hydrochloride (TC-HCl) under visible light was studied. Their structural, optical, and electronic properties were evaluated, and their photocatalytic efficiency for TC-HCl degradation was explored with a detailed assessment of the active species, degradation pathways, and effects of humic acid, different anions and cations, and water sources. The 30% P-doped g-C3N4/Bi2WO6 had the best photocatalytic performance for TC-HCl degradation. Its photocatalytic rate was 4.5-, 2.2-, and 1.9-times greater than that of g-C3N4, P-doped g-C3N4, and Bi2WO6, respectively. The improved photocatalytic efficiency was attributed to the synergistic effect of P doping and 2D/2D direct Z-scheme heterojunction construction. The stability and reusability of the 30% P-doped C3N4/Bi2WO6 were confirmed by cyclic degradation experiments. Radical scavenging experiments and electron spin resonance spectroscopy showed that the main active species were •O2− and h+. This work provides a new strategy for the preparation of direct Z-scheme heterojunction catalysts with high catalytic performance.

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“…[136] The results of the analysis are presented in ˙OH and˙O 2 ¯were capture by using 5,5-dimethyl-1-pyrroline N-oxide (DMPO) and (2,2,6,6tetramethylpiperidin-1-yl)oxyl was used to capture the h + radicals. [137] In the presence of light irradiation, the ESR spectrum exhibited the six characteristic peaks of DMPO-˙O 2 ¯signal for MFO:SCNNS (1:1), whereas no such signal was observed under dark condition (Figure 10a). Likewise, the four characteristic peaks of DMPO-˙OH were also observed when the light was switched on.…”

Section: Photocatalytic Degradation Mechanismmentioning

confidence: 98%

Synergistically enhanced solar light‐driven degradation of hazardous food colorants by ultrasonically derived MgFe₂O₄/S‐doped g‐C₃N₄ nanocomposite: A Z‐scheme system‐based heterojunction approach

Pratibha

Rajput

2022

Applied Organom Chemis

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Magnesium ferrite/sulfur‐doped graphitic nitride (MFO/SCNNS) heterostructure has been developed via sonication‐assisted deposition of zero‐dimensional MFO over the surface of two‐dimensional SCN nanosheets. Additionally, the prepared nanocomposite material has been characterized by several analytical characterization techniques including XRD, Fourier transform infrared (FT‐IR), high‐resolution transmission electron microscopy (HR‐TEM), selected‐area electron diffraction (SAED), energy‐dispersive spectrometry (EDS), Brunauer–Emmett–Teller (BET), vibrating sample magnetometer (VSM), UV–Vis. spectroscopy, electron spin resonance(ESR), and X‐ray photoelectron spectroscopy (XPS) which indicated the existence of strong interfacial interactions via heterojunction formation between MFO and SCNNS. The as prepared nanocomposite, especially MFO:SCNNS (1:1) (having 1:1 mass ratio of MFO to SCNNS), offered impressive photo‐response for the complete degradation of Erythrosine B and Indigo Carmine within 30 min under direct solar light irradiation. The enhanced photoactivity of the MFO:SCNNS (1:1) was also confirmed by the photoluminescence, photocurrent and electrochemical impedance spectroscopy. The Mott–Schottky analysis also depicts the formation of p‐n heterojunction at the interface of MFO and SCNNS, responsible for the enhanced photoactivity. Additionally, the degradation process has also been studied using mass spectrometry, UV–Vis, and ESR spectral analysis. The trapping experiments were also conducted to confirm the formation of active radical species during the photodegradation reaction. Furthermore, the nanocomposite photocatalytic material offered excellent stability and reusability and thus can serve as an effective candidate for environmental remediation application such as real waste water treatment.

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Construction of Z-scheme g-C3N4 / MnO2 /GO ternary photocatalyst with enhanced photodegradation ability of tetracycline hydrochloride under visible light radiation

Cited by 85 publications

References 69 publications

Peroxymonosulfate-Assisted BiVO₄/Exfoliated g-C₃N₄ Heterojunction for High-Performance Photodegradation of Tetracycline Induced by Visible Light

Peroxymonosulfate-Assisted BiVO₄/Exfoliated g-C₃N₄ Heterojunction for High-Performance Photodegradation of Tetracycline Induced by Visible Light

2D/2D Phosphorus-Doped g-C3N4/Bi2WO6 Direct Z-Scheme Heterojunction Photocatalytic System for Tetracycline Hydrochloride (TC-HCl) Degradation

Synergistically enhanced solar light‐driven degradation of hazardous food colorants by ultrasonically derived MgFe₂O₄/S‐doped g‐C₃N₄ nanocomposite: A Z‐scheme system‐based heterojunction approach

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Construction of Z-scheme g-C3N4 / MnO2 /GO ternary photocatalyst with enhanced photodegradation ability of tetracycline hydrochloride under visible light radiation

Cited by 85 publications

References 69 publications

Peroxymonosulfate-Assisted BiVO4/Exfoliated g-C3N4 Heterojunction for High-Performance Photodegradation of Tetracycline Induced by Visible Light

Peroxymonosulfate-Assisted BiVO4/Exfoliated g-C3N4 Heterojunction for High-Performance Photodegradation of Tetracycline Induced by Visible Light

2D/2D Phosphorus-Doped g-C3N4/Bi2WO6 Direct Z-Scheme Heterojunction Photocatalytic System for Tetracycline Hydrochloride (TC-HCl) Degradation

Synergistically enhanced solar light‐driven degradation of hazardous food colorants by ultrasonically derived MgFe2O4/S‐doped g‐C3N4 nanocomposite: A Z‐scheme system‐based heterojunction approach

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Peroxymonosulfate-Assisted BiVO₄/Exfoliated g-C₃N₄ Heterojunction for High-Performance Photodegradation of Tetracycline Induced by Visible Light

Peroxymonosulfate-Assisted BiVO₄/Exfoliated g-C₃N₄ Heterojunction for High-Performance Photodegradation of Tetracycline Induced by Visible Light

Synergistically enhanced solar light‐driven degradation of hazardous food colorants by ultrasonically derived MgFe₂O₄/S‐doped g‐C₃N₄ nanocomposite: A Z‐scheme system‐based heterojunction approach