In-situ preparation of NH2-MIL-125(Ti)/BiOCl composite with accelerating charge carriers for boosting visible light photocatalytic activity

Hu, Qingsong; Di, Jun; Wang, Bin; Ji, Mengxia; Chen, Yong; Xia, Jiexiang; Zhao, Yaping

doi:10.1016/j.apsusc.2018.10.020

Cited by 122 publications

(32 citation statements)

References 47 publications

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“…The recombination of charge carriers can be inhibited, which was evidenced by the PL spectra. For the photocatalytic degradation of a typical fluoroquinolone antibiotics (norfloxacin), the as-prepared BiOBr/NH 2 -UiO-66(Zr) composites with different loading amounts all displayed enhanced 167,196,207 can be used to explain the charge transfer processes (Fig. 27C).…”

Section: Mof-semiconductor Heterojunctionsmentioning

confidence: 99%

Recent advances in MOF-based photocatalysis: environmental remediation under visible light

Wang

Gao

Al-Enizi

et al. 2020

Inorg. Chem. Front.

492

203

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Section: Mof-semiconductor Heterojunctionsmentioning

confidence: 99%

Recent advances in MOF-based photocatalysis: environmental remediation under visible light

Wang

Gao

Al-Enizi

et al. 2020

Inorg. Chem. Front.

492

203

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“…The composite showed a higher surface area compared to pure BiOBr and higher photocatalytic activity which was attributed to the transfer of the electron from Ti 4+ to Ti 3+ and the synergistic effect between BiOBr and the NH 2 -MIL-125(Ti) [ 20 ]. Likewise, Hu et al reported the synthesis of BiOCl/NH 2 -MIL-125(Ti) composite which exhibited a large surface area allowing for more adsorption of contaminants such as tetracycline hydrochloride (TC), bisphenol A (BPA) and other reactive species [ 21 ]. Consequently, the composite showed improved photocatalytic activity towards the removal of TC and BPA.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Activities of FeNbO4/NH2-MIL-125(Ti) Composites toward the Cycloaddition of CO2 to Propylene Oxide

2021

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Photocatalytic utilization of CO2 in the production of value-added chemicals has presented a recent green alternative for CO2 fixation. In this regard, three FeNbO4/NH2-MIL-125(Ti) composites of different mole ratios were synthesized, characterized using Powder X-ray diffraction (PXRD), UV–vis diffuse reflectance spectroscopy (UV-Vis DRS), Brunauer–Emmett–Teller (BET), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray (EDX). PXRD patterns confirm the co-existence of the parent components in the prepared composites. Moreover, the surface area increased as the mole percent of NH2-MIL-125(Ti) in the composites increased due to the large surface area of NH2-MIL-125(Ti). Prepared composites were investigated for the photocatalytic insertion of CO2 into propylene oxide. FeNbO4(75%)/NH2-MIL-125(Ti)(25%) showed the highest percent yield of 52% compared to the other two composites. Results demonstrate the cooperative mechanism between FeNbO4 and NH2-MIL-125(Ti) and that the reaction proceeded photocatalytically.

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“…Figure 10 shows the UV-Vis diffuse reflectance spectra of Cu-MOF and Cu-MOF-NH2. The optical absorption edge for Cu-MOF is estimated at 320 nm, and the calculated optical band gap of Cu-MOF is 3.9 eV based on the relationship Eg= 1240/ [35,58]. This implies that Cu-MOF will absorb a smaller fraction of the light emitted by the mercury lamp compared to titania catalysts.…”

Section: Photocatalytic Oxidation Of Benzyl Alcoholmentioning

confidence: 99%

“…The amine group (NH2) linker decoration has shown a beneficial photocatalytic activity to selectively oxidize organic compounds [32][33][34]. The linker decorating may modify the bandgap energy of MOFs to a certain level; for example, stronger electron-donating substitutions such as amines dramatically lower the band gap, shifting the photo absorption edge from the ultraviolet to visible light area [35].…”

Section: Introductionmentioning

confidence: 99%

Visible-light Responsive Cu-MOF-NH 2 for Highly Efficient Aerobic Photocatalytic Oxidation of Benzyl Alcohol

Abdel-Azim

Aman

Steen

et al. 2021

Preprint

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The current study focuses on the photocatalytic oxidation of benzyl alcohol in acetonitrile under air bubbling conditions comparing titania-based materials, Cu-MOF, and Cu-MOF-NH2 as semiconductor photocatalysts. The catalysts were characterized by XRD, N2 adsorption-desorption, FT-IR, Raman spectroscopy, and TEM. The photocatalytic benzyl alcohol conversion reached ~ 100% after exposing the four prepared catalysts to a 125W mercury lamp for up to 240 min. Benzaldehyde is formed with a moderate selectivity (after a reaction time of 60 min. ca. 30% over the titania-based catalysts 37%, 45% over Cu-MOF, and Cu-MOF-NH2, respectively). The formation of electron-hole pairs at the surface of the semiconductor nanoparticles followed by oxidation reaction was the suggested mechanism. A first-order kinetic model was observed for the photocatalytic oxidation of the investigated alcohols, and the rate constants were calculated. According to preliminary research, decorating MOF linker by amine (MOF-NH2) could improve visible-light harvesting, charge separation, and electron transport of the resulting catalyst, resulting in increased photocatalytic activity. The current work offers some direction for the development of MOF-based photocatalysts for organic synthesis.

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In-situ preparation of NH2-MIL-125(Ti)/BiOCl composite with accelerating charge carriers for boosting visible light photocatalytic activity

Cited by 122 publications

References 47 publications

Recent advances in MOF-based photocatalysis: environmental remediation under visible light

Recent advances in MOF-based photocatalysis: environmental remediation under visible light

Photocatalytic Activities of FeNbO4/NH2-MIL-125(Ti) Composites toward the Cycloaddition of CO2 to Propylene Oxide

Visible-light Responsive Cu-MOF-NH 2 for Highly Efficient Aerobic Photocatalytic Oxidation of Benzyl Alcohol

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