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Gamma-irradiated copper-based metal organic framework nanocomposites for photocatalytic degradation of water pollutants and disinfection of some pathogenic bacteria and fungi.
BMC Microbiol
November 2024
Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, 33 El Buhouth St, Dokki, 12622, Giza, Egypt.
Background: Although there are many uses for metal-organic framework (MOF) based nanocomposites, research shows that these materials have received a lot of interest in the field of water treatment, namely in the photodegradation of water contaminants, and disinfection of some pathogenic bacteria and fungi. This is brought on by excessive water pollution, a lack of available water, low-quality drinking water, and the emergence of persistent micro-pollutants in water bodies. Photocatalytic methods may be used to remove most water contaminants, and pathogenic microbes, and MOF is an excellent modifying and supporting material for photocatalytic degradation.
View Article and Find Full Text PDFDestruction of Metal-Organic Frameworks: Positive and Negative Aspects of Stability and Lability.
Chem Rev
December 2020
Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States.
Metal-organic frameworks (MOFs), constructed from organic linkers and inorganic building blocks, are well-known for their high crystallinity, high surface areas, and high component tunability. The stability of MOFs is a key prerequisite for their potential practical applications in areas including storage, separation, catalysis, and biomedicine since it is essential to guarantee the framework integrity during utilization. However, MOFs are prone to destruction under external stimuli, considerably hampering their commercialization.
View Article and Find Full Text PDFPhotolytic degradation of molecular iodine adsorbed on model SiO particles.
Sci Total Environ
June 2020
Aix Marseille Univ, CNRS, LCE, Marseille, France.
A molecular derivatization method followed by gas chromatographic separation coupled with mass spectrometric detection was used to study photolytic degradation of I adsorbed on solid SiO particles. This heterogeneous photodegradation of I is studied at ambient temperature in synthetic air to better understand I atmospheric dispersion and environmental fate. The obtained laboratory results show a considerably enhanced atmospheric lifetime of molecular iodine adsorbed on solid media.
View Article and Find Full Text PDFPhotochemical sample treatment: a greener approach to chlorobenzene determination in sediments.
Talanta
November 2014
Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e farmaceutiche "STEBICEF", Università Degli Studi di Palermo-Italy, Viale delle Scienze Ed. 17, 90128 Palermo, Italy; Istituto Euro Mediterraneo di Scienza e Tecnologia (IEMEST), Via Emerico Amari 123, 90139 Palermo, Italy.
Due to worker׳s exposure, solvent and stationary phases׳ consumption, sample purification is one of the most polluting steps in analytical procedures for determination of organic pollutants in real samples. The use of photochemical sample treatment represents a valid alternative methodology for extracts clean up allowing for a reduction of the used amount of organic solvents. In this paper we report the first application on the photolytic destruction of organic substances to eliminate some of the interferences in the analysis of Chlorobenzenes in sediment samples.
View Article and Find Full Text PDFExperimental study on ozone photolytic and photocatalytic degradation of H2S using continuous flow mode.
J Hazard Mater
January 2012
Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China.
A foam nickel support was coated with TiO(2) sols containing anatase particles. The malodorous compound, hydrogen sulfide (H(2)S), was removed via photolytic and photocatalytic oxidation processes under ambient conditions using a self-made photoreactor with 185-nm ozone (O(3)) lamp illumination. The reactor degraded H(2)S with high removal efficiency.
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