Z-scheme heterojunction composed of Fe doped g-C3N4 and MoS2 for efficient ciprofloxacin removal in a photo-assisted peroxymonosulfate system

Li, Xiangchen; Feng, Dan; He, Xiangming; Qian, Dayi; Nasen, Bate; Qi, Baochuan; Fan, Shuwen; Shang, Jiangwei; Cheng, Xiuwen

doi:10.1016/j.seppur.2022.122219

Cited by 33 publications

(4 citation statements)

References 66 publications

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“…54 The CB of the n-type semiconductor recorded in the literature is about 0.1 eV higher than that of the flat band, which is generally considered to be approximately the same in the Mott–Schottky diagram. 55 In this work, the CB of MoS 2 is −0.16 eV, and the CB of ZnO is −1.03 eV. The CB of BiOBr is −0.24 eV, and the CB of g-C 3 N 4 is −1.33 eV.…”

Section: Resultsmentioning

confidence: 59%

The construction of a photocatalytic fuel cell based on piezoelectric-enhanced dual heterojunctions of PVDF–HFP supported 2D/3D composites toward photocatalytic degradation of tetracycline

Yu,

Yang,

Deng

et al. 2024

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 59%

The construction of a photocatalytic fuel cell based on piezoelectric-enhanced dual heterojunctions of PVDF–HFP supported 2D/3D composites toward photocatalytic degradation of tetracycline

Yu,

Yang,

Deng

et al. 2024

J. Mater. Chem. A

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“…In the survey spectra ( Supplementary Figure S4 ), PPor1-g-C 3 N 4 was constructed by C, N, O and S. As shown in Figure 3 , the six characteristic peaks in PPor1-g-C 3 N 4 could be divided into three groups: the characteristic peaks at 398.8 and 400.1 eV belonging to the N of NH and C=N in the pyrrole ring of PPor1 group; the characteristic peaks at 398.3, 399.5 and 400.6 eV belonging to the N of C-N=C, N-(C) 3 and C-NH 2 of g-C 3 N 4 , respectively ( Xu et al, 2021 ); the characteristic peak located at 402.0 eV assigned to the N of the triazole ring in PPor1-g-C 3 N 4 ( Wipperman et al, 1991 ; Liu et al, 2016 ), indicating that PPor1 group was covalently attached to g-C 3 N 4 group via the click reaction. In addition, compared with g-C 3 N 4 -N 3 and PPor1-C≡CH, the peaks of g-C 3 N 4 group in PPor1-g-C 3 N 4 shift towards lower binding energy, while the peaks of porphyrin shift towards higher binding energy, respectively, which could be attributed to the disappearance of the alkynyl group in PPorx-C≡CH and the azide group in g-C 3 N 4 -N 3 after the click reaction between PPorx-C≡CH and g-C 3 N 4 -N 3 and the formation of the triazole ring, leading to the change of the chemical environment of N in porphyrin and g-C 3 N 4 ( Li X. et al, 2022 ; Shi et al, 2022 ). The results of XPS proved the covalently linking between PPor1 group and g-C 3 N 4 group.…”

Section: Resultsmentioning

confidence: 99%

Enhanced non-linear optical properties of porphyrin-based polymers covalently functionalized with graphite phase carbon nitride

et al. 2022

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In our work, a flurry of original porphyrin-based polymers covalently functionalized g-C3N4 nanohybrids were constructed and nominated as PPorx-g-C3N4 (x = 1, 2 and 3) through click chemistry between porphyrin-based polymers with alkyne end-groups [(PPorx-C≡CH (x = 1, 2 and 3)] and azide-functionalized graphitic carbon nitride (g-C3N4-N3). Due to the photoinduced electron transfer (PET) between porphyrin-based polymers [PPorx (x = 1, 2 and 3)] group and graphite phase carbon nitride (g-C3N4) group in PPorx-g-C3N4 nanohybrids, the PPorx-g-C3N4 nanohybrids exhibited better non-linear optical (NLO) performance than the corresponding PPorx-C≡CH and g-C3N4-N3. It found that the imaginary third-order susceptibility (Im [χ(3)]) value of the nanohybrids with different molecular weight (MW) of the pPorx group in the nanohybrids ranged from 2.5×103 to 7.0 × 103 g mol−1 was disparate. Quite interestingly, the Im [χ(3)] value of the nanohybrid with a pPorx group’s MW of 4.2 × 103 g mol−1 (PPor2-g-C3N4) was 1.47 × 10–10 esu, which exhibited the best NLO performance in methyl methacrylate (MMA) of all nanohybrids. The PPorx-g-C3N4 was dispersed in polymethyl methacrylate (PMMA) to prepare the composites PPorx-g-C3N4/PMMA since PMMA was widely used as an alternative to glass. PPor2-g-C3N4/PMMA showed the excellent NLO performance of all nanohybrids with the Im [χ(3)] value of 2.36 × 10–10 esu, limiting threshold of 1.71 J/cm2, minimum transmittance of 8% and dynamic range of 1.09 in PMMA, respectively. It suggested that PPorx-g-C3N4 nanohybrids were potential outstanding NLO materials.

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“…As shown in Figure 10e, TEMPO-h + exhibits three signal peaks, but the intensity of the h + produced in the system under light conditions is weaker than under dark conditions. This is because the excitation of h + by light will produce adducts with weaker signals [39].…”

Section: Free Radical Capture Experimentsmentioning

confidence: 99%

Preparation of 2D/2D CoAl-LDH/BiO(OH)XI1−X Heterojunction Catalyst with Enhanced Visible–Light Photocatalytic Activity for Organic Pollutants Degradation in Water

Che,

2024

Water

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Hydrotalcite/bismuth solid solution (2D/2D CoAl-LDH/BiO(OH)XI1−X) heterojunction photocatalysts were fabricated through a hydrothermal route. Because of their identical layered structure and interlayer hydroxides, CoAl-LDH(2D) and BiO(OH)XI1−X(2D) form a tightly bonded heterojunction, resulting in efficient light absorption, excitation, and carrier migration conversion. At the same time, the large specific surface area and abundant hydroxyl groups of the layered structure make the heterojunction catalyst exhibit excellent performance in the photocatalytic degradation of organic pollutants. Under visible light irradiation and in the presence of 1 g/L of the catalyst, 10 mg/L of methyl orange (MO) in water could be completely degraded within 20 min, and the degradation rate of tetracycline (TC) reached 99.23% within 5 min. CoAl-LDH/BiO(OH)XI1−X still maintained good photocatalytic degradation activity of tetracycline after five cycles, and the structure of the catalyst did not change. The reaction mechanism related to the degradation of TC by photocatalytic reactions was explored in detail, and the photoexcitation of the semiconductor heterojunction, as well as the subsequent free radical reaction process and the degradation pathway of TC were clarified. This work provides a promising strategy for the preparation of efficient photocatalytic materials and the development of water purification technology.

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Z-scheme heterojunction composed of Fe doped g-C3N4 and MoS2 for efficient ciprofloxacin removal in a photo-assisted peroxymonosulfate system

Cited by 33 publications

References 66 publications

The construction of a photocatalytic fuel cell based on piezoelectric-enhanced dual heterojunctions of PVDF–HFP supported 2D/3D composites toward photocatalytic degradation of tetracycline

The construction of a photocatalytic fuel cell based on piezoelectric-enhanced dual heterojunctions of PVDF–HFP supported 2D/3D composites toward photocatalytic degradation of tetracycline

Enhanced non-linear optical properties of porphyrin-based polymers covalently functionalized with graphite phase carbon nitride

Preparation of 2D/2D CoAl-LDH/BiO(OH)XI1−X Heterojunction Catalyst with Enhanced Visible–Light Photocatalytic Activity for Organic Pollutants Degradation in Water

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