Over the past two decades, the application of photocatalytic reactions in organic synthesis has increased remarkably. Porphyrins, renowned for their exceptional photophysical properties, photostability, and prevalence in natural catalytic processes, are attracting significant attention as promising photocatalysts for reactions proceeding through energy transfer and one-electron transfer. In this work, we synthesized the indium(III) complex of 2-[4-(diethoxyphosphoryl)phenyl]-1-imidazo[4,5-]-5,10,15,20-tetramesitylporphyrin (InTMPIP) and explored its application as a photocatalyst for the oxidation of sulfides by dioxygen or air. Complex InTMPIP was found to generate singlet oxygen with quantum yield of 0.92 (toluene) and enables efficient photooxidation of sulfides to sulfoxides by dioxygen in "green" acetonitrile/water (4:1 /) or methanol/chloroform (2:1 /) solvent mixtures with almost quantitative yield. Furthermore, InTMPIP was grafted onto hydrated mesoporous titania and materials InTMPIP/TiO-1 and InTMPIP/TiO-2 with different In/Ti ratios were obtained and investigated. The composition and structure of the materials were studied using a combination of elemental analysis, various spectroscopic methods, gas adsorption measurements, and SEM imaging. Finally, the photocatalytic efficiency of InTMPIP/TiO-2 was explored in aerobic photooxidation of sulfides. The heterogenized complex enables selective synthesis of sulfoxides under "green" conditions; however, it is prone to leaching into the solution when irradiated with both blue and red LEDs.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11857907 | PMC |
| http://dx.doi.org/10.3390/molecules30040864 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Enhanced Hot/Free Electron Effect for Photocatalytic Hydrogen Evolution Based on 3D/2D Graphene/MXene Composite.
Small
March 2025
The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China.
Photocatalytic hydrogen production through water splitting represents a promising strategy to store solar energy as chemical energy. Current photocatalysts primarily focus on traditional semiconductor materials, such as metal oxides, sulfides, nitrides, g-CN, etc. However, these materials often suffer from large bandgap and fast charge recombination, which limit sunlight utilization and result in unsatisfactory photon conversion efficiency.
View Article and Find Full Text PDFInvestigation of Suitable, Readily Available, Sources of Sulfate-Reducing Bacteria Inoculum, and Evaluation of Sulfate Reduction Rates Achieved at Different pHs.
Environ Microbiol Rep
April 2025
School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa.
This study investigated the suitability of readily available and naturally occurring sources of microorganisms (inoculum) to use for the cultivation of sulphate-reducing bacteria (SRB) for acid mine drainage (AMD) remediation. The selected inocula included AMD water (AMD), mud (MUD) and reed-bed mud (RM) from the AMD surrounds, mealworms (MW), cow dung (CD) and raw sewage sludge (RS). The suitability of the different inoculum sources was evaluated by comparing the SO reduction and sulfide (S) production rates at three different pHs.
View Article and Find Full Text PDFCrystal structures of six complexes of phosphane chalcogenides P ( = -butyl or isopropyl, = S or Se) with the metal halides ( = Pd or Pt, = Cl or Br), two halochalcogenyl-phospho-nium derivatives ( Bu PrPBr)[PdBr] and one hydrolysis product.
Acta Crystallogr E Crystallogr Commun
March 2025
Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany.
The complexes - (: = BuPrPSe, = Pd, = Cl; : = Bu PrPSe, = Pd, = Cl; : = Bu PrPSe, = Pd, = Br; : = Bu PrPS, = Pd, = Br; : = Bu PrPS, = Pt, = Cl) {systematic names: (-butyl-diiso-propyl-phosphine selenide-κ)di-chlorido-palladium(II), [PdCl(CHPSe)] (), (di--butyl-iso-propyl-phosphine selenide-κ)di-chloridopalladium(II), [PdCl(CHPSe)] (), di-bromido-(di--butyl-iso-propyl-phosphine selenide-κ)palladium(II), [PdBr(CHPSe)] (), di-bromido-(di--butyl-iso-propyl-phosphine sulfide-κ)palladium(II), [PdBr(CHPS)] (), di-chlorido-(di--butyl-iso-propyl-phosphine sulfide-κ)palladium(II), [PdCl(CHPS)] ()} all display a configuration with square-planar geometry at the metal atom. Compounds and are isotypic. The mol-ecules of and display crystallographic inversion symmetry; compound involves two independent mol-ecules, each with inversion symmetry but with differing orientations of the tri-alkyl-phosphane groups.
View Article and Find Full Text PDFBioremediation of non-point hydrogen sulfide emissions using bacterial cellulose/activated carbon membrane.
Microb Cell Fact
March 2025
Key Laboratory of Molecular Microbiology and Technology, College of Life Sciences, Ministry of Education, Nankai University, Tianjin, 300071, China.
Background: Hydrogen sulfide (HS) gas, characterized by its low odor threshold and toxicity, poses significant challenges in non-point source odor management. Traditional biotechnologies are effective in removing malodorous gases from point sources but they are limited for non-point source odor control.
Results: In this study, the sqr and pdo genes from Cupriavidus pinatubonensis JMP134 were introduced into the bacterial cellulose-producing strain Kosakonia oryzendophytica FY-07.
Nanomaterial Innovations and Machine Learning in Gas Sensing Technologies for Real-Time Health Diagnostics.
ACS Sens
March 2025
NanoTech Laboratory, School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, New South Wales 2109, Australia.
Breath sensors represent a frontier in noninvasive diagnostics, leveraging the detection of volatile organic compounds (VOCs) in exhaled breath for real-time health monitoring. This review highlights recent advancements in breath-sensing technologies, with a focus on the innovative materials driving their enhanced sensitivity and selectivity. Polymers, carbon-based materials like graphene and carbon nanotubes, and metal oxides such as ZnO and SnO have demonstrated significant potential in detecting biomarkers related to diseases including diabetes, liver/kidney dysfunction, asthma, and gut health.
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!