Engineered nickel-based metal − organic framework nanofiber membrane with fish-scale microstructure for enhanced photocatalytic CO2 conversion

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131490 - 131490

Опубликована: Янв. 1, 2025

Язык: Английский

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One-Pot Synthesis of Hydrophobic Porphyrin Zirconium-Based MOFs for the Photoreduction of CO₂ to Formate

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Using zirconium tetrachloride as a metal source and tetra(4-carboxyphenyl)porphyrin ligand by in situ introducing octadecylphosphonic acid (OPA), three hydrophobic porphyrin metal–organic frameworks (MOFs) with different structural topologies were constructed, where these MOFs are labeled OPA@PCN-222, OPA@PCN-223, OPA@PCN-224. Compared the original Zr-MOFs without modification of OPA, modified show excellent properties can maintain stability long-term humidity environment. Meanwhile, OPA@PCN-224 exhibit wide absorption visible light steadfast expeditious photocurrent response leveraging ligands. When illuminated light, demonstrate an efficient reduction CO2 to HCOO–, achieving average reaction rates 330, 260, 258 μmol·h–1·g–1 for These 1.13–1.41 times higher than that Zr-MOFs. The mechanism study shows both ligands Zr–O clusters serve catalytically active sites, enabling conversion HCOO–. This research introduction alkyl chains effectively enhance under humid environment while maintaining their catalytic activity, which provides reference improving comprehensive performance MOF catalysts.

Язык: Английский

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An S-scheme NH2-UiO-66/SiC photocatalyst via microwave synthesis with improved CO2 reduction activity

Journal of CO2 Utilization, Год журнала: 2021, Номер 55, С. 101806 - 101806

Опубликована: Ноя. 16, 2021

Язык: Английский

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

ACS Omega, Год журнала: 2022, Номер 7(24), С. 21145 - 21155

Опубликована: Июнь 9, 2022

As rapid industrial growth spawns severe water contamination and a far-reaching impact on environmental safety, the development of purification system is in high demand. Herein, visible light-induced photocatalytic adsorbent membrane was developed by growing porous metal–organic framework (MOF), MIL-100(Fe) crystals, onto electrospun polyacrylonitrile (PAN) nanofibers, its capability adsorption effect investigated. water-soluble organic foulants, cationic dye, rhodamine B (RhB), an anionic methyl orange (MO), were employed, adsorption/desorption characteristics analyzed. Since possesses positive charges aqueous solution, MO more rapidly adsorbed grown PAN (MIL-100(Fe)@PAN) than RhB. Under light, both degradation occurred concurrently, facilitating process. The reusability MIL-100(Fe)@PAN as explored cyclic adsorption–desorption experiments. Density functional theory (DFT) calculations corroborated higher binding energy charged over RhB demonstrated possible steric hindrance to adhere MOF pores. emphasis study lies combined investigation experimental approach DFT for fundamental understanding phenomena occurring This provides theoretical support interaction between MOF–hybrid complexes contaminants when MOF-hybridized composites adsorb or photodegrade pollutants different sizes.

Язык: Английский

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Enhanced Generation and Effective Utilization of Cr(V) for Simultaneous Removal of Coexisting Pollutants via MOF@COF Photocatalysts

ACS ES&T Engineering, Год журнала: 2024, Номер 4(4), С. 870 - 881

Опубликована: Янв. 16, 2024

Simultaneous removal of coexisting aqueous pollutants is urgently needed in the face higher demands for wastewater purification. Using pollutant intermediates with strong oxidizing ability to degrade other a novel, energy-saving, and environmentally friendly way. Increased generation effective utilization these are vital boost decontamination performance. Here, we fabricated core–shell MOF@COF (MIL-125@PC–COF) heterojunction photocatalyst synergistic Cr(VI) organic tetracycline (TC). The efficiency TC coexistence system was increased by 2.1- 1.1-fold compared that single-pollutant system, respectively. unique structure composite photocatalysts can hinder recombination photogenerated electrons holes, thus promoting production Cr(V) from reduction. Quenching tests, situ variable-temperature electron paramagnetic resonance (EPR) analysis, UV–vis absorbance verified its positive contribution degradation. mechanism key role dual-pollutant were clarified.

Язык: Английский

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