Enhancement of Oxidative Desulfurization Performance over UiO‐66(Zr) by Titanium Ion Exchange

Ye, Gan; Qi, Hui; Li, Xin; Leng, Kunyue; Sun, Yinyong; Xu, Wei

doi:10.1002/cphc.201700182

Cited by 52 publications

(23 citation statements)

References 47 publications

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“…In order to validate the successful incorporation of Ti to PCN‐224, the photoluminescence (PL) of the TCPP linker was weakened (Figure E), illustrating the improved ligand‐metal charge transfer because the Ti‐incorporation could narrow down the bandgap of MOFs as reported before. A new band at 671 cm −1 was observed in the FT‐IR spectra (Figure S3, Supporting Information), mostly ascribed to the O–Ti–O vibration as predicted . In the X‐ray photoelectron spectra (XPS), the binding energy of Zr shifted lower (Figure G) due to the weaker electro‐negativity caused by Ti which was also observed in the Ti 2p region (Figure H).…”

Section: Resultssupporting

confidence: 59%

Titanium Incorporation into Zr‐Porphyrinic Metal–Organic Frameworks with Enhanced Antibacterial Activity against Multidrug‐Resistant Pathogens

Chen

Zhang

Dong

et al. 2020

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143

106

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This study uses metal–organic frameworks (MOFs) alone without any added antibacterial ingredients as the nonantibiotic agent for photodynamic therapy (PDT) of chronic wounds infected by multidrug‐resistant (MDR) bacteria. Nanoparticles (NPs) of MOFs (PCN‐224) are incorporated with titanium through a facile cation exchange strategy. The obtained bimetallic PCN‐224(Zr/Ti) shows greatly enhanced photocatalytic performance for the generation of reactive oxygen species under visible light, which is responsible for the effective antibacterial activities. The PCN‐224(Zr/Ti) NPs are loaded onto lactic‐co‐glycolic acid nanofibers to prepare a wound dressing, which shows high biocompatibility and minimal cytotoxicity. The wound dressing is efficient for PDT‐based in vivo healing of the chronic wound infected by MDR bacteria. Most importantly, this work does not involve any additional antibacterial agents, which is facile, low cost, and in particular, greatly explores the potential of MOFs as a powerful nonantibiotic agent in PDT.

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Section: Resultssupporting

confidence: 59%

Titanium Incorporation into Zr‐Porphyrinic Metal–Organic Frameworks with Enhanced Antibacterial Activity against Multidrug‐Resistant Pathogens

Chen

Zhang

Dong

et al. 2020

Small

143

106

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“…Ye et al. operated a Ti ion exchange using TiCl 4 over standard zirconium UiO‐66, greatly enhancing the desulfurization efficacy (up to 11‐fold) using aqueous H 2 O 2 as oxidant . This strategy is not only efficient for UiO‐66(Zr) with crystal defects but also for the pristine fully‐coordinated MOF (Figure ).…”

Section: Mof Catalysts For Odsmentioning

confidence: 99%

Metal‐Organic Framework‐Based Catalysts for Oxidative Desulfurization

et al. 2020

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Oxidative desulfurization (ODS) is emerging as the most promising methodology to remove refractive naturally occurring sulfides from fossil fuels. Metal‐organic frameworks (MOFs), a fascinating class of materials, are suitable as catalysts for this process due to the theoretical infinite number of combinations of polynuclear metal clusters and organic linkers. A rational fine‐tuning of the material structure, porosity and chemical functionality have given rise to a considerable number of MOF‐based catalytic active materials. Furthermore, MOFs can act as host, with programmable cavity sizes to accommodate catalytic species, forming novel robust catalytic MOF composite materials. Herein an account of this growing field of heterogeneous catalysis is reported and discussed, aiming to point out future outlooks and perspectives.

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“…Based on the structure of UiO-66(Zr), bimetal-centered UiO-66(Zr) materials were also prepared. Sun et al firstly reported Ti-UiO-66(Zr) obtained by ion-exchange method for ODS reactions [43]. It is well known that Ti ions have stronger oxidation ability than Zr ions [44].…”

Section: Zr-mofs As Ods Catalystsmentioning

confidence: 99%

Advances in Oxidative Desulfurization of Fuel Oils over MOFs-Based Heterogeneous Catalysts

Luo

Liu

et al. 2021

Catalysts

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Catalytic oxidative desulfurization (ODS) of fuel oils is considered one of the most promising non-hydrodesulfurization technologies due to the advantages of mild reaction conditions, low cost and easy removal of aromatic sulfur compounds. Based on this reason, the preparation of highly efficient ODS catalysts has been a hot research topic in this field. Recently, metal-organic frameworks (MOFs) have attracted extensive attention due to the advantages involving abundant metal centers, high surface area, rich porosity and varied pore structures. For this, the synthesis and catalytic performance of the ODS catalysts based on MOFs materials have been widely studied. Until now, many research achievements have been obtained along this direction. In this article, we will review the advances in oxidative desulfurization of fuel oils over MOFs-based heterogeneous catalysts. The catalytic ODS performance over various types of catalysts is compared and discussed. The perspectives for future work are proposed in this field.

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Enhancement of Oxidative Desulfurization Performance over UiO‐66(Zr) by Titanium Ion Exchange

Cited by 52 publications

References 47 publications

Titanium Incorporation into Zr‐Porphyrinic Metal–Organic Frameworks with Enhanced Antibacterial Activity against Multidrug‐Resistant Pathogens

Titanium Incorporation into Zr‐Porphyrinic Metal–Organic Frameworks with Enhanced Antibacterial Activity against Multidrug‐Resistant Pathogens

Metal‐Organic Framework‐Based Catalysts for Oxidative Desulfurization

Advances in Oxidative Desulfurization of Fuel Oils over MOFs-Based Heterogeneous Catalysts

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