Advanced oxidation technologies that utilise sulfate radicals (·SO) hold significant potential for wastewater treatment applications. Employing photogenerated electrons of semiconductor to activate the persulfate system is possible to enhance the efficiency of charge separation in photocatalysts and improve the photocatalytic oxidation ability. This study aims to further enhance the efficiency of photogenerated charge separation of metal-free porphyrin supramolecular photocatalysts and to develop environmentally friendly catalysts for activating peroxydisulfate (PDS). Specifically, the performance of a visible-light-driven metal-free porphyrin aggregate-based photocatalytic system (CTAB-TCPP/PDS) for the degradation of phenol was investigated. The phenol degradation rate of the CTAB-TCPP/PDS system increased by 87% compared to that of pure TCPP catalyst. The separation efficiency of photogenerated carriers can be significantly improved by utilising the photogenerated electrons from porphyrin aggregates to activate PDS. Additionally, various reactive species, such as holes and sulfate radicals, can effectively work together to degrade phenol.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/09593330.2025.2473658 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Visible light-driven metal-free porphyrin assembly-activated peroxydisulfate for the degradation of organic pollutants.
Environ Technol
March 2025
College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, People's Republic of China.
Advanced oxidation technologies that utilise sulfate radicals (·SO) hold significant potential for wastewater treatment applications. Employing photogenerated electrons of semiconductor to activate the persulfate system is possible to enhance the efficiency of charge separation in photocatalysts and improve the photocatalytic oxidation ability. This study aims to further enhance the efficiency of photogenerated charge separation of metal-free porphyrin supramolecular photocatalysts and to develop environmentally friendly catalysts for activating peroxydisulfate (PDS).
View Article and Find Full Text PDFEnhancing charge transfer efficiency through carboxyl-modification to improve the photocatalytic activity of covalent organic frameworks for hydrogen evolution from water splitting.
J Colloid Interface Sci
May 2025
School of Materials Science and Engineering, No.38 Tongyan Road, Jinnan District, Tianjin 300350, PR China. Electronic address:
The design of photocatalysts based on covalent organic frameworks (COFs) has attracted considerable interest. Nevertheless, the low efficiency in separating photogenerated carriers remains a substantial challenge. Herein, carboxyl modification is employed to enhance the separation efficiency of photogenerated carriers within imine-based porphyrin COFs through the resultant built-in electric field, thereby improving the photocatalytic performance of COFs in hydrogen evolution from water splitting.
View Article and Find Full Text PDFTransforming CO into formic acid by integrated solar-driven catalyst-enzyme coupled artificial photosynthetic system.
Photochem Photobiol
January 2025
Korea Research Institute of Chemical Technology, Daejeon, South Korea.
Photo-biocatalyst coupled systems offer a promising approach for converting solar energy into valuable fuels. The bio-integrated photocatalytic system sets a research benchmark by utilizing green energy for formic acid production, reducing CO₂ emissions, and enhancing selectivity through bio-enzyme incorporation. This bio-photocatalytic are promising solutions for environmental remediation and energy production.
View Article and Find Full Text PDFInfluence of Keto-Enol Tautomerism in Regulating CO Photoreduction Activity in Porous Organic Porphyrinic Photopolymers.
ACS Appl Mater Interfaces
January 2025
Department of Catalysis & Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, Telangana State 500007, India.
Photoassisted CO reduction employing a metal-free system is both challenging and fascinating. In our study, we present a structural engineering strategy to tune the potential energy barrier, which, in turn, affects the photoreduction ability. A series of porphyrin-based porous organic polymers () were hydrothermally synthesized and the influence of keto-enol tautomerization on the CO photoreduction potential has been rigorously investigated.
View Article and Find Full Text PDFShape-responsive host-guest chemistry: metal-free tetracationic porphyrin nonplanarity promoted by clay mineral interactions assessed by theoretical simulations.
Dalton Trans
February 2025
Departamento de Física dos Materiais e Mecânica, Instituto de Física, Universidade de São Paulo, C. P. 66318, São Paulo, SP, 05508-090, Brazil.
Distortions in the porphyrin core from planarity can trigger a unique structure-property relationship, imparting its basicity, chemical stability, redox potential, and excited-state energetics, among other properties. The colour change promoted by such distortion is signed by red shifts in its electronic absorption spectra. The adsorption of guest -substituted free-base porphyrin species onto inorganic hosts, such as clay minerals (layered aluminium or magnesium silicates), is known to further promote colour changes.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!