Porphyrin-Based Two-Dimensional Layered Metal–Organic Framework with Sono-/Photocatalytic Activity for Water Decontamination

Abstract

Water treatment is crucial to improve the water quality and reduce diarrheal and chronological diseases caused by excessive discharge of organic dyes and other waste. The development and expansion of efficient catalysts for the degradation and sterilization of organic dyes has attracted widespread attention. Herein, we report an example of a porphyrin-based twodimensional layered metal−organic framework (MOF) (2DZnTcpp) and its efficient sono-/photocatalytic degradation of organic dyes and bactericidal activity. The dislocated layers effectively avoid close π−π stacking and provide a porous space for oxygen/water/dye contact. The introduction of Zn ions increases the spin orbital coupling through the heavy atom effect and promotes the intersystem crossing process for singlet oxygen generation. The effective ligand-to-metal charge transfer and the excessive open Zn catalytic sites also facilitate water splitting for hydroxyl radical generation. These features together promote the reactive oxygen species (ROS) generation of 2DZnTcpp under light illumination or ultrasound sonication. It is worth noting that the 2DZnTcpp with a high specific surface area and porosity shows efficient sono-/photocatalytic degradation of organic dye waste. Moreover, 2DZnTcpp could also largely inactivate Escherichia coli under light irradiation (the light power of 1 sun) or ultrasound sonication for 30 min with efficiencies over 99.99999%. This work provides an approach for the design and synthesis of MOF-based sono-/photocatalysts used in the purification and treatment of textile wastewater and is committed to the establishment of a more efficient, fast, and environmentally friendly catalytic system.

Promoted Type I and II ROS Generation by a Covalent Organic Framework through Sonosensitization and PMS Activation

“…Diminished generation abilities were also observed in the same experiments using HHTP and TFPN (Figure S12). Therefore, the exceptional 1 O 2 generation ability originates from the novel crystalline framework of COF-316 m , coupled with US, which is comparable to porphyrin-based MOF and COF sonosensitizers. , To verify the structural maintenance of COF-316 m after US irradiation, PXRD and IR data were collected (Figure S13). There were no significant differences between before and after US irradiation.…”

Organic–Inorganic Hybrid Near-Infrared Emitting Porous Polymer for Detection and Photodegradation of Antibiotics

“…The peak at −80 ppm is designated for the silicon atom with unreacted −CH CH 2 , indicating that about 80% of vinyl groups are involved in the reaction based on the integration ratio in the solid-state 29 Si NMR spectrum. 53 The solid-state 13 C spectra of PCS-CZ-DCM and OVS are shown in Figure S2. The overlapping signal of 109.6−157.9 ppm from PCS-CZ-DCM can be considered to be the result of the aromatic rings from CZ-DCM and the sp 2 carbon atoms of the unreacted vinyl groups.…”

“…1 H NMR (400 MHz, (CD 3 ) 2 SO), δ (ppm): 8.28 (d, J = 8 Hz, 4H), 8.10 (d, J = 16Hz, 2H), 7.75 (d, J = 4 Hz, 2H), 7.67 (d, J = 8 Hz, 2H), 7.52−7.56 (m, 6H), 7.38 (t, J = 16 Hz, 4H), 7.22 (d, J = 16 Hz, 2H), 6.99 (s, 2H). 13 Fabrication of PCS-CZ-DCM. PCS-CZ-DCM was synthesized from OVS and CZ-DCM by the Friedel−Crafts reaction.…”

MIL-100(Fe)-Hybridized Nanofibers for Adsorption and Visible Light Photocatalytic Degradation of Water Pollutants: Experimental and DFT Approach

“…To date, varied types of MOF-hybridized composites have been investigated for their applications in fields with various functions, such as gas adsorption, 21 , 22 sterilization, 23 , 24 and photocatalytic activity. 25 , 26 However, the research studies based on MOF-hybridized composites are mostly focused on exploring the conditions under which the maximum photodegradation and adsorption were achieved, rather than analyzing the individual contribution to the total removal capability. 26 − 28 Also, the findings from previous studies on the effect of environmental conditions (pH, contaminant types, etc.)…”