Anatase TiO2@MIL-101(Cr) nanocomposite for photocatalytic degradation of bisphenol A

Tang, Yuan; Yin, Xiaohong; Mu, Manman; Jiang, Yue; Li, Xiaoli; Zhang, Hao; Ouyang, Tianwei

doi:10.1016/j.colsurfa.2020.124745

Cited by 71 publications

(25 citation statements)

References 37 publications

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“…The spectrum of pristine MIL-101(Cr) exhibited intense absorption in both the UV and visible regions, with two characteristic peaks. The absorption band of MIL-101(Cr) in the UV region was assigned to π-π* transitions of the ligands and Cr (III)-oxide clusters, whereas the visible-light absorption came from Cr 3+ -oxide clusters, which characteristically absorbed at 450 and 600 nm (as also reported in the literature [17,34,37]). In the spectra of the SnO 2 @MCr samples, the absorption edge of SnO 2 was undisturbed after the SnO 2 QDs was grown on the on MIL-101(Cr), possibly because the SnO 2 QDs could not alter the crystal lattice of MIL-101(Cr) [38].…”

Section: Characterizationssupporting

confidence: 67%

“…The nitrogen adsorption-desorption isotherm of the original MIL-101(Cr) was a type I isotherm on the IUPAC classification scheme. Together with the corresponding pore-size distribution, this result indicates a mesoporous structure [34] (Figure 6b). Table 2 lists the surface areas and pore volumes of the samples.…”

Section: Characterizationsmentioning

confidence: 62%

“…Pure SnO2 presented a quasi-spherical morphology consisting of ag Figure S1 (in Supplementary Material) shows the Fourier transform in spectra of the samples. In the spectra of MIL-101(Cr), the peaks at 1402, 16 cm −1 were attributed, respectively, to the aromatic O=C=O, C-C, and C-O bration modes of the H2BDC ligand, respectively [34]. The characteristic pe 800-500 cm −1 range typified the absorption peaks of Cr-O.…”

Section: Characterizationsmentioning

confidence: 97%

“…The survey XPS spectrum (Figure 5a) of SnO 2 @MCr was dominated by C, O, Cr, and Sn, consistent with the EDS results. Meanwhile, the C 1s spectrum of MIL-101(Cr) showed three peaks at 284.46, 285.34, and 288.57 eV, corresponding to C-C/C=C, C-O, and C=O of H 2 BDC, respectively [34,35] (Figure 5b). The two peaks at 587.16 and 577.69 eV in Figure 5c were attributed to the 2p 1/2 and 2p 3/2 signals of Cr, respectively, demonstrating the presence of Cr 3+ in MIL-101(Cr) [35].…”

Section: Characterizationsmentioning

confidence: 99%

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Assembling Ultrafine SnO2 Nanoparticles on MIL-101(Cr) Octahedrons for Efficient Fuel Photocatalytic Denitrification

Liang

Wang

et al. 2021

Molecules

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Effectively reducing the concentration of nitrogen-containing compounds (NCCs) remains a significant but challenging task in environmental restoration. In this work, a novel step-scheme (S-scheme) SnO2@MCr heterojunction was successfully fabricated via a facile hydrothermal method. At this heterojunction, MIL-101(Cr) octahedrons are decorated with highly dispersed SnO2 quantum dots (QDs, approximate size 3 nm). The QDs are evenly wrapped around the MIL-101(Cr), forming an intriguing zero-dimensional/three-dimensional (0D/3D) S-scheme heterostructure. Under simulated sunlight irradiation (280 nm < λ < 980 nm), SnO2@MCr demonstrated superior photoactivity toward the denitrification of pyridine, a typical NCC. The adsorption capacity and adsorption site of SnO2@MCr were also investigated. Tests using 20%SnO2@MCr exhibited much higher activity than that of pure SnO2 and MIL-101(Cr); the reduction ratio of Cr(VI) is rapidly increased to 95% after sunlight irradiation for 4 h. The improvement in the photocatalytic activity is attributed to (i) the high dispersion of SnO2 QDs, (ii) the binding of the rich adsorption sites with pyridine molecules, and (iii) the formation of the S-scheme heterojunction between SnO2 and MIL-101(Cr). Finally, the photocatalytic mechanism of pyridine was elucidated, and the possible intermediate products and degradation pathways were discussed.

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Section: Characterizationssupporting

confidence: 67%

Section: Characterizationsmentioning

confidence: 62%

Section: Characterizationsmentioning

confidence: 97%

Section: Characterizationsmentioning

confidence: 99%

See 2 more Smart Citations

Assembling Ultrafine SnO2 Nanoparticles on MIL-101(Cr) Octahedrons for Efficient Fuel Photocatalytic Denitrification

Liang

Wang

et al. 2021

Molecules

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“…[24,25] Figure 2a shows the morphology of MIL-101(Cr), when 226 μL HF was added, MIL-101(Cr) showed smooth surface octahedral crystal with a size of about 1 μm. [26] In addition, Figure S1 shows the morphology of MIL-101(Cr) with different HF additions, and the morphology of MIL-101(Cr) changes due to the change of HF addition. Figure 2b shows the morphology of the CdS/MIL-101(Cr)-0.4 sample.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Ag/CdS/MIL‐101(Cr) Composite by Dual Solvent Method and Its Photocatalytic Hydrogen Production

et al. 2021

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MIL-101(Cr) with regular octahedron structure was synthesized by hydrothermal method, and CdS/MIL-101(Cr) was prepared by solution titration. CdS was introduced into the surface of MIL-101(Cr) matrix with large surface area and its pores to make it well dispersed and grow. On this basis, nano-Ag was compounded, and the charge transfer rate was increased and the optical response spectrum of CdS was prolonged by using the localized surface plasmon resonance effect of noble metals. The results showed that under visible light irradiation, Ag/CdS/ MIL-101(Cr)-0.6 ternary composite exhibited excellent photocatalytic H 2 generation rate (521.05 μmol/(g h), which was 1.9 times that of CdS/MIL-101(Cr)-0.4. This provides an idea for the synthesis of other high-performance photocatalytic materials.

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Microfluidic Platform for Semiconductor and MOF Integrated Photocatalysts: A Review over Synthesis Approaches and Applications

Nikseresht,

Sohrabi,

Zhang

et al. 2024

ChemistrySelect

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The synergy of integrating semiconductors and MOF photocatalysts is the chief motive for this review paper. This merit has been combined with the microfluidic platforms, which are the cutting‐edge technology of synthesis. The microfluidic synthesis of semiconductors and MOF photocatalysts are categorized according to morphology and linker, respectively. Enhancing the effectiveness of photocatalysis comes along with adding a proper amount of electron acceptor or hole scavenger, combing electrochemical with photocatalytic degradation, and optimizing the photocatalyst band gap. Moreover, approaches for improving photocatalytic activity of MOFs can be classified as functionalization of organic linkers/metal centers, sensitization, incorporation of nanoparticles, and hybridization with semiconductors. Finally, the current applications of microfluidic devices, from the detection of water quality parameters to the elimination of water contaminants, have been addressed.

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Anatase TiO2@MIL-101(Cr) nanocomposite for photocatalytic degradation of bisphenol A

Cited by 71 publications

References 37 publications

Assembling Ultrafine SnO2 Nanoparticles on MIL-101(Cr) Octahedrons for Efficient Fuel Photocatalytic Denitrification

Assembling Ultrafine SnO2 Nanoparticles on MIL-101(Cr) Octahedrons for Efficient Fuel Photocatalytic Denitrification

Preparation of Ag/CdS/MIL‐101(Cr) Composite by Dual Solvent Method and Its Photocatalytic Hydrogen Production

Microfluidic Platform for Semiconductor and MOF Integrated Photocatalysts: A Review over Synthesis Approaches and Applications

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