Sol-gel syntéza stříbrem dopovaného TiO2 filmu a hodnocení jeho fotokatalytických a antibakteriálních vlastností
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Práce se zabývá přípravou fotokatalytických a hydrofilních vrstev na bázi oxidu titaničitého dopovaného stříbrem. K přípravě byla využívána sol-gel syntéza a technika dip-coating. Byl zkoumán vliv pracovních podmínek při dip-coatingu na homogenitu vrstev a vliv teploty kalcinace na krystalovou strukturu TiO2 ve vrstvách. Charakterizace vrstev probíhala pomocí Ramanovy spektroskopie. Fotokatalytická aktivita byla vyhodnocována testem rozkladu resazurinu. Hydrofilita vrstev byla vyhodnocována měřením kontaktního úhlu. Antibakteriální aktivita byla prováděna s bakterií Escherichia coli.
The work deals with the preparation of photocatalytic and hydrophilic layers based on silver-doped titanium dioxide. Sol-gel synthesis and dip-coating on glass slides were used for the preparation. The effect of working conditions during dip-coating on the homogeneity of the layers and the effect of calcination temperature on the crystal structure of TiO2 in the layers were investigated. Characterization of the layers was carried out by Raman spectroscopy. Photocatalytic activity was evaluated by resazurin decomposition test. The hydrophilicity of the layers was evaluated by contact angle measurement. Antibacterial activity was performed with Escherichia coli.
The work deals with the preparation of photocatalytic and hydrophilic layers based on silver-doped titanium dioxide. Sol-gel synthesis and dip-coating on glass slides were used for the preparation. The effect of working conditions during dip-coating on the homogeneity of the layers and the effect of calcination temperature on the crystal structure of TiO2 in the layers were investigated. Characterization of the layers was carried out by Raman spectroscopy. Photocatalytic activity was evaluated by resazurin decomposition test. The hydrophilicity of the layers was evaluated by contact angle measurement. Antibacterial activity was performed with Escherichia coli.
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fotokatalýza, fotokatalyzátory, oxid titaničitý, dopování stříbrem, Ag/TiO2, sol-gel syntéza, dip-coating, Ramanova spektroskopie, resazurin, antibakteriální aktivita, Escherichia coli, hydrofilita, samočistitelné skleněné povrchy