A5005429847- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Advanced Nanomaterials in Catalysis
- Copper-based nanomaterials and applications
- Catalytic Processes in Materials Science
- Probiotics and Fermented Foods
- Nanoparticles: synthesis and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Advanced oxidation water treatment
- Gas Sensing Nanomaterials and Sensors
- Quantum Dots Synthesis And Properties
- Nanomaterials for catalytic reactions
- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Wastewater Treatment and Nitrogen Removal
- Microbial Metabolites in Food Biotechnology
- Microbial Community Ecology and Physiology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Catalysis and Oxidation Reactions
- Marine and coastal ecosystems
- Photonic Crystals and Applications
- Chemical Synthesis and Reactions
- Pigment Synthesis and Properties
- Gut microbiota and health
Hokkaido University
2016-2025
Warsaw University of Life Sciences
2020-2025
Jagiellonian University
2022-2024
Hubei University of Technology
2024
Sapporo Science Center
2015-2021
Graduate School USA
2021
Hokkaido Information University
2017
University of Warmia and Mazury in Olsztyn
2012-2017
Friedrich-Alexander-Universität Erlangen-Nürnberg
2010-2012
Universität Ulm
2012
Fifteen commercial titania (titanium(IV) oxide; TiO2) powders were modified with gold by photodeposition to prepare photocatalysts that work under irradiation light in the visible range (vis). The gold-modified (Au/TiO2) characterized diffuse reflectance spectroscopy (DRS), field-emission scanning electron microscopy (FE-SEM), transmission (STEM) and X-ray powder diffraction (XRD). It was shown all tested could absorb an absorption maximum at localized surface plasmon resonance (LSPR)...
Action spectrum analyses showed that visible light-induced oxidation of 2-propanol by aerated gold-modified titanium(IV) oxide (titania) suspensions is initiated excitation gold surface plasmon, and polychromatic irradiation experiments revealed the photocatalytic reaction rate depends strongly on properties titania, such as particle size, area crystalline form (anatase or rutile) deposits, size shape.
Ag and CuO nanoparticles (NPs) synthesized on the surface of commercial TiO2 (P25) by radiolytic reduction were characterized diffuse reflectance spectroscopy (DRS), transmission electron microscopy (TEM), high-angle annular dark-field scanning (HAADF-STEM), energy-dispersive X-ray (EDS), photoelectron (XPS), absorption (XAS). In case modification with silver copper, results from HAADF-STEM, EDS, XPS, XAS show that Ag@CuO (large cores decorated small clusters CuO) obtained TiO2–P25. The...
Modification of titania with copper is a promising way to enhance the photocatalytic performance TiO2. The enhancement means significant retardation charge carriers’ recombination ratio and introduction visible light activity. This review focuses on two main ways by species—i.e., originated from plasmonic properties zero-valent (plasmonic photocatalysis) heterojunctions between semiconductors (titania oxides). copper-modified discussed for oxidative reaction systems due their importance...
TiO2 (commercial-P25 and synthesized by sol−gel method) was surface modified with platinum ions or [Pt3(CO)6]62- clusters to improve its photocatalytic activity. The physical properties of the photocatalysts were examined transmission electron microscopy (TEM), X-ray diffraction (XRD), Brunauer, Emmett Teller adsorption (BET) methods. To characterize absorption ability visible light, diffusion reflectance spectra (DRS) recorded. charge-carrier lifetimes in after UV illumination determined...
TiO2 surface modification with bimetallic nanoparticles (NPs) has demonstrated to be a strategy enhance the hydrogen generation via photocatalysis and minimize use of expensive noble metals. A better understanding role NPs is crucial importance design efficient photocatalysts. Here, we show systematic study commercial (P25) mono- (Ni, Pd, Ni–Pd) synthesized by radiolysis. The photocatalysts were characterized High Resolution Transmission Microscopy (HRTEM), Scanning Electron Microscope...
TiO2 nanotubes arrays (NTs), obtained via electrochemical anodization of Ti foil, were modified with monometallic (Cu, Bi) and bimetallic (AgCu) nanoparticles. Different amounts metals' precursors deposited on the surface NTs by spin-coating technique, reduction metals was performed gamma radiolysis. Surface modification titania studied EDS XPS analysis. The results show that AgCu nanoparticles exist in a Agcore-Cushell form. Photocatalytic activity examined under UV irradiation phenol used...
Small gold nanoparticles (Au-NPs) were used to modify the surface of titanium dioxide as visible-light absorbers and thermal redox active centers. Au-NPs synthesized on commercial TiO2 (P25) by reduction with tetrakis(hydroxymethyl)phosphonium chloride. The Au/P25 composites characterized different techniques including X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), diffuse reflectance spectroscopy (DRS), photoelectron (XPS). Time-resolved microwave...
Anatase nanoparticles, exposing the majority of {0 0 1}, {1 0} and 1} facets were synthesized doped with different niobium amount to investigate self-trapping excess electrons resulting photocatalytic activity. Photocatalyst structure presence inside obtained Nb-doped anatase samples was confirmed by combination structural spectroscopic analyses. Only for facets, introduced found localize on surface titanium sites, as long analysis performed in ambient environment. The activity data, studied...
Octahedral anatase particles (OAP, with eight equivalent {101} facets) and decahedral (DAP, two additional {001} were modified nanoparticles of noble metals (Au, Ag, Cu). The titania morphology, expressed by the presence different arrangements exposed crystal facets, played a key role in photocatalytic properties metal-modified faceted titania. In UV/vis systems, two-faceted configuration DAP was more favorable for reaction efficiency than single-faceted OAP because an efficient charge...
Octahedral anatase particles (OAPs) were prepared by hydrothermal (HT) reaction of titanate nanowires (TNWs). OAPs modified with noble metals (Au, Ag, Cu and Pt) two photodeposition methods: in the absence initial presence oxygen system. Photocatalytic activities for oxidative decomposition acetic acid anaerobic dehydrogenation methanol under UV/vis irradiation oxidation 2-propanol visible light investigated. Antibacterial bacteria (Escherichia coli) fungi (Candida albicans) investigated...
The combination of TiO₂ photocatalyst and magnetic oxide nanoparticles enhances the separation recoverable properties nanosized photocatalyst. Metal-modified (Me = Pd, Au, Pt, Cu) TiO₂/SiO₂@Fe₃O₄ nanocomposites were prepared by an ultrasonic-assisted sol-gel method. All samples characterized X-ray powder diffraction (XRD) analysis, Brunauer-Emmett-Teller (BET) method, photoelectron spectroscopy (XPS), scanning transmission electron microscopy (STEM), Mott-Schottky analysis photoluminescence...
Titania photocatalysts have been intensively examined for both mechanism study and possible commercial applications more than 30 years. Although various reports already published on titania, including comprehensive review papers, the morphology-governed activity, especially novel nanostructures, has not reviewed recently. Therefore, this paper presents novel, attractive, prospective titania photocatalysts, zero-, one-, two-, three-dimensional structures. The 1D, 2D, 3D structures mainly...