Microwave-induced fast incorporation of titanium into UiO-66 metal–organic frameworks for enhanced photocatalytic properties

Tu, Jiping; Zeng, Xiaoliang; Xu, Fujian; Wu, Xi; Tian, Yunfei; Hou, Xiandeng; Zhang, Long

doi:10.1039/c7cc00076f

Cited by 123 publications

(73 citation statements)

References 47 publications

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“…This illustrated that the Ti incorporation could definitely boost the ROS generation, which was mostly attributed to the improved electron transfer from TCPP to the Zr‐Ti‐oxo over Zr‐oxo clusters. The photo‐electrons could boost the generation of ROS especially superoxide anion radicals as the previously reported …”

Section: Resultsmentioning

confidence: 58%

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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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: Resultsmentioning

confidence: 58%

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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124

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“…From the above presented examples, it is clear that the cation exchange by means of post-synthetic strategies have disadvantages, being the high contact times and the unpredictability of the exchange rate. To circumvent these limitations, Zhou Long et al 36 introduced recently the use of a microwave assisted method to prepare MM-MOFs. Again in this work, UiO-66 was chosen as an example to introduce Ti 4+ .…”

Section: Post-synthetic Exchangementioning

confidence: 99%

Mixed-metal metal–organic frameworks

et al. 2019

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“…20425 This system is somewhat unique because the UiO466 node is both highly stable and interconnected, where many other metal PSE processes involve less stable, or more highly exposed SBUs. 15 Each Zr 4+ site in the UiO466(Zr) SBU is eight4connected, bound to 1,44benzene dicarboxylate (bdc 24 ) ligands, intracluster bridging oxo ligands, and terminal water/hydroxide groups.…”

mentioning

confidence: 99%

Transmission Electron Microscopy Reveals Deposition of Metal Oxide Coatings onto Metal–Organic Frameworks

et al. 2018

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Postsynthetic strategies for modifying metal-organic frameworks (MOFs) have proven to be an incredibly powerful approach for expanding the scope and functionality of these materials. Previously, we reported on the postsynthetic exchange (PSE) of metal ions and ligands in the University of Oslo (UiO) series of MOFs. Detailed characterization by several analytical methods, most notably inductively coupled plasma mass spectrometry and transmission electron microscopy reveal that metal ion deposition on the surface of these MOFs occurs in the form of nanoscale metal oxides, rather than yielding exchanged metal sites within the MOFs, as was previously reported. By contrast, these combined analytical methods do confirm that ligand-based PSE can occur in these MOFs. These findings provide new insight into the postsynthetic manipulation of MOF materials, highlight the importance of rigorously characterizing these materials to correctly assign their composition and structure, and provide a new route to making hybrid solids with a MOF@metal oxide architecture.

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Microwave-induced fast incorporation of titanium into UiO-66 metal–organic frameworks for enhanced photocatalytic properties

Cited by 123 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

Mixed-metal metal–organic frameworks

Transmission Electron Microscopy Reveals Deposition of Metal Oxide Coatings onto Metal–Organic Frameworks

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