Evaluation of Muscovite as a Photocatalyst in Aqueous Methanol Solution under UV Light

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F25%3A10258565" target="_blank" >RIV/61989100:27710/25:10258565 - isvavai.cz</a>

Result on the web

<a href="https://sp9.sciencesconf.org/data/pages/SP9_Book_of_Abstracts.pdf" target="_blank" >https://sp9.sciencesconf.org/data/pages/SP9_Book_of_Abstracts.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Evaluation of Muscovite as a Photocatalyst in Aqueous Methanol Solution under UV Light

Original language description

Given the global issues of increasing energy consumption, depletion of fossil fuels, and environmental pollution caused by human activities, it is crucial to explore new ways of obtaining and storing clean energy sources. Hydrogen production appears to be a very promising solution to replace fossil fuels with minimal environmental impact, while also serving as a key chemical compound in various industrial processes, such as ammonia synthesis and hydrorefining [1].Clay minerals are eco-friendly materials that help adsorb contaminants and improve the activity of nanomaterials. When used as supports for semiconductor photocatalysts, clays significantly improve both the photocatalytic efficiency and recyclability compared to standalone semiconductor nanomaterials. Among clay minerals, muscovites from the mica group are commonly used for their chemical and physical stability as flexible ultrathin insulating substrates, as well as wide-bandgap layered semiconductors for 2D electronic devices [2].Muscovite samples Ms1 and Ms2 were prepared to the particle size fraction less than 0.04 mm by milling (a vibratory mill VM4 OPS Přerov, Czech Republic) at 1500 rpm for 2.5 min and then sieving. Nickel(II) nitrate hexahydrate Ni(NO3)2·6H2O was supplied by the company Lach-Ner Co., Neratovice, Czech Republic. Muscovites were calcined at 600 °C to the Ms1/600 and Ms2/600 samples. The NiO/muscovite composites containing about 20 wt.% NiO originated from Ni(NO3)2·6H2O as a metal precursor were obtained by solid state thermal synthesis at 600 °C.The aim of this study was to synthesize NiO/muscovite photocatalysts through various preparation methods, aiming to create stable, low-cost, environmentally friendly, and efficient materials for photocatalytic hydrogen generation. The photocatalytic activity was investigated in a stirred photoreactor under 254 nm light irradiation using a methanol–water mixture as the sacrificial agent. A comprehensive set of characterization techniques was employed, including X-ray diffraction (XRD), scanning electron microscopy (SEM), coupled with energy-dispersive X-ray spectroscopy (EDS), specific surface area analysis (BET), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), photoluminescence spectroscopy (PL). The results of the photocatalytic experiments are presented in Figure 1 and show a clear correlation with the physicochemical properties derived from these characterization techniques.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20700 - Environmental engineering

Project

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Continuities

O - Projekt operacniho programu

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů