0487729 - ÚFCH JH 2019 RIV NL eng J - Journal Article
Žouželka, Radek - Remzová, Monika - Brabec, Libor - Rathouský, Jiří
Photocatalytic performance of porous TiO2 layers prepared by quantitative electrophoretic deposition from organic solvents.
Applied Catalysis B - Environmental. Roč. 227, JUL 2018 (2018), s. 70-78. ISSN 0926-3373. E-ISSN 1873-3883
R&D Projects: GA ČR(CZ) GA17-18972S; GA MŠMT(CZ) EF16_013/0001821
Institutional support: RVO:61388955
Keywords : EPD * Photocatalysis * TiO2
OECD category: Physical chemistry
Impact factor: 14.229, year: 2018

Highly-crystalline TiO2 nanoparticles coated on a suitable substrate make excellent photocatalysts for environmental
applications. While electrophoretic deposition is frequently used to prepare such layers on a conductive
support, this method often requires the presence of an additive to suppress nanoparticle agglomeration
and increase particle surface charge. However, the presence of an additive can lead to contamination that negatively
affects layer properties. To overcome this drawback, we developed an optimized electrophoretic method
for the preparation of porous TiO2 layers, whose photocatalytic performance in the degradation of a toxic
compound was analyzed. Our method enabled TiO2 layers (anatase, rutile and their mixture) to be quantitatively
deposited on rigid substrates (stainless steel, FTO-glass and silicon wafers) without sintering and without the use
of a dispersive additive. The photocatalytic performance of layers depended on the structural properties of
titania particles, especially their allotropic form (anatase vs. rutile) and crystallinity, and on the presents of
defects within the crystals. For well-developed crystals of anatase phase a high rate of the degradation of 4-
chlorophenol and its almost complete mineralization were achieved. Owing to their excellent properties,
especially stability and photocatalytic performance, the layers prepared by EPD are suitable for a broad range of
environmental applications.
Permanent Link: http://hdl.handle.net/11104/0282363