Article
Materials Science, Ceramics
Joseane C. Bernardes, Daliana Muller, Eloah Latocheski, Josiel B. Domingos, Tobias Fey, Carlos R. Rambo
Summary: This study reports the preparation of biomorphic Al2O3 ceramics derived from rattan as supports for TiO2 aerogels. The TiO2 aerogel coated on the channels' walls increased the specific surface area and enhanced photocatalytic efficiency. This research provides potential applications in utilizing rattan-derived Al2O3 with TiO2 aerogel coating.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Beata Tryba, Piotr Miadlicki, Piotr Rychtowski, Maciej Trzeciak, Rafal Jan Wrobel
Summary: Acetaldehyde decomposition was studied on TiO2 doped with metallic Ni powder and TiO2 supported on nickel foam under heating at temperatures of 25-125 °C and UV irradiation. The highest conversion of acetaldehyde on TiO2 and UV irradiation was achieved at 75 °C. Doping Ni to TiO2 did not enhance its photocatalytic activity, but using nickel foam as a support greatly improved the decomposition of acetaldehyde and increased the mineralization of acetaldehyde to CO2. However, oxidized nickel foam as a support was detrimental to the reaction. The application of nickel foam in this study significantly enhanced the separation of free carriers in TiO2 and thus improved the photocatalytic reaction yields.
Article
Environmental Sciences
The Ky Vo
Summary: In this study, mesoporous microspheres of Al2O3 @TiO2 with improved adsorption and photocatalytic performance were successfully prepared. The incorporation of amorphous γ-Al2O3 was found to enhance the removal of tetracycline and promote the separation and migration of photo-generated holes and electrons. The study provides a simple and scalable method for manufacturing Al2O3-decorated TiO2 microspheres.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Applied
Patricia Garcia-Munoz, Javier Ivanez, Victor A. de la Pena O'Shea, Nicolas Keller, Fernando Fresno
Summary: In this study, the feasibility of using alveolar open-cell beta-SiC foams as a catalyst support for solar hydrogen production was explored. Pt and Ru nanoparticles were obtained through photoassisted synthesis and tested for gas-phase hydrogen production from water-ethanol mixtures. The foam-supported photocatalysts, including Pt/TiO2 and Ru/TiO2, showed activity in solar photocatalytic reactions, with Pt/TiO2 being the most active. The foam pore size had little influence on hydrogen outcome, and a UV-to-hydrogen conversion efficiency of 14% (equivalent to 0.49% solar-to-hydrogen) was achieved under the best conditions, with a photonic efficiency higher than 30%.
Article
Materials Science, Ceramics
Edoardo Magnone, Min Kwang Kim, Hong Joo Lee, Jung Hoon Park
Summary: TiO2 oxide was deposited on a microstructured alpha-Al2O3 ceramic hollow fiber substrate using a one-step solution-immersion process with TEOS as a binder. The composition of the coating solution significantly affected the photocatalytic properties of TiO2 powders deposited on the substrate, with the removal efficiency of MetB reaching about 91% under optimal conditions. Additionally, the fabricated TiO2-supported Al2O3 ceramic hollow fiber substrates showed high photocatalytic stability even after multiple cycles.
CERAMICS INTERNATIONAL
(2021)
Article
Computer Science, Information Systems
Wieslaw Sabat, Dariusz Klepacki, Kazimierz Kamuda, Kazimierz Kurylo
Summary: The paper presents the results of research on the influence of the 1.2/50μs (8/20μs) surge impulse on the reliability of commercial LED lamps. The tests showed that the propagation of the impulse in the supply systems has effects on critical levels and the probability of lamp failure. These findings are significant for the mass production of budget LED lamps.
Article
Biochemistry & Molecular Biology
Piotr Rychtowski, Oliwia Paszkiewicz, Maria Carmen Roman-Martinez, Maria Angeles Lillo-Rodenas, Agata Markowska-Szczupak, Beata Tryba
Summary: TiO2 was prepared using hydrothermal treatment and subsequent thermal heating, introducing surface defects and improving photocatalytic properties. Cu doping on TiO2 increased light absorption in the visible range and enhanced the deactivation of bacteria.
Article
Engineering, Chemical
Vincent Goetz, Chloe Dezani, Enrique Ribeiro, Cyril Caliot, Gael Plantard
Summary: This article aims to develop a modeling and simulating tool for the operation of a continuous flow heterogeneous photocatalysis reactor. By focusing on the coupling between radiative transfer and reaction kinetics, and utilizing the Monte Carlo method to solve the radiative transfer equation, the dynamic simulation model has been validated.
Article
Chemistry, Physical
Adam Kubiak, Hubert Fuks, Marcin Frankowski, Anna Szymczyk, Michal Ceglowski
Summary: In this study, TiO2-graphite photocatalysts were synthesized using a one-step in situ microwave procedure, and the influence of graphite content on the crystal structure, surface area development, and optical properties of the photocatalysts was determined. The presence of graphite caused a red shift in the absorption spectra, and a tailor-made LED photoreactor was designed to match the spectrum of the photocatalyst and the light source, resulting in enhanced elimination of sulfamethoxazole. The TiO2-graphite systems showed higher sulfamethoxazole removal efficiency compared to the reference TiO2, and exhibited good reusability, suggesting the potential of this spectral matching approach for wastewater treatment plants.
APPLIED SURFACE SCIENCE
(2023)
Article
Environmental Sciences
Maria Patricia de la Flor, Rafael Camarillo, Fabiola Martinez, Carlos Jimenez, Rafael Quiles, Jesusa Rincon
Summary: In this study, TiO2-based composites were synthesized through supercritical CO2 synthesis, showing uniform coverage of CNT by TiO2 particles. The CNT50/TiO250 composite exhibited the best performance in photocatalytic degradation of the antioxidant BHT, with complete degradation within 30 minutes under visible light. Superoxide radical was identified as the main oxidizing agent in the photocatalytic reaction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Mingli Li, Meng Wei, Xiaoer Xie, Qianwen Dong, Qiongzhi Gao, Xin Cai, Shengsen Zhang, Feng Peng, Yueping Fang, Siyuan Yang
Summary: This study successfully prepared a new generation of Ni/TiO2 and Ni/TiO2 (R) CdS monolithic catalysts and found that their photocatalytic and photoelectrocatalytic water splitting properties are superior to previously reported TiO2-based film photocatalysts. Mechanism investigation revealed the coexistence of Z-scheme and type II charge transport mechanisms and their impact on the efficiency of photogenerated charge separation and transport.
Article
Environmental Sciences
Heidi Dayana Pascagaza-Rubio, Stephane Godbout, Joahnn H. H. Palacios, Dany Cinq-Mars, Caroline Cote, Alain N. N. Rousseau, Sebastien Fournel
Summary: This study assessed the disinfection effectiveness of TiO2-coated materials and UV-A LED light, and the impacts of temperature and bacteria concentration. The results demonstrated that TiO2-coated materials and UV-A LED light have high disinfection potential and can be valuable alternatives for dealing with E. coli contamination in cattle troughs.
Article
Materials Science, Multidisciplinary
Leonardo Zavilenski Fogaca, Jean Cesar Marinozi Vicentini, Camila Fabiano de Freitas, Monique de Souza, Mauro Luciano Baesso, Wilker Caetano, Vagner Roberto Batistela, Mara Heloisa Neves Olsen Scaliante
Summary: The study obtained rGO supported on TiO2 photocatalysts through an improved method, and the photocatalytic experiments showed that 1rGOTiO(2) catalysts degraded methylene blue and tartrazine dyes 6 times faster and 3 times faster than TiO2, respectively.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Wen Sun, Xuankun Li, Jingtao Zou, Han Guo
Summary: N-doped TiO2 with small crystallite size and good dispersibility was successfully synthesized using a hydrolysis precipitation method. The N-TiO2 showed excellent photocatalytic activity for the degradation of organic pollutants under blue light LED irradiation. Immobilizing N-TiO2 on SiC ceramic foam resulted in a promising photocatalytic material with high stability and efficiency.
Review
Environmental Sciences
Danilo Bertagna Silva, Gianluigi Buttiglieri, Sandra Babic
Summary: The development of UV-LED technology presents new possibilities for TiO(2) photocatalysis, but further research is needed on its application in real water matrices and environmentally relevant concentrations. To reduce costs, improving UV-LED efficiency, optimizing light uniformity, and adopting efficiency enhancement options like periodic illumination, wavelength coupling, and H(2)O(2) addition are essential.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Ceramics
Vilko Mandic, Floren Radovanovic-Peric, Ivana Panzic, Domagoj Vrsaljko
Summary: In this study, pure beta-tricalcium phosphate (β-TCP) powder was successfully prepared through two facile synthesis paths. The morphology and porosity of the ceramic bodies were optimized and characterized. The synthesis and morphology features were analyzed using X-ray diffraction and scanning electron microscopy.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Ivana Panzic, Vilko Mandic, Jimmy Mangalam, Thomas Rath, Floren Radovanovic-Peric, Mattia Gaboardi, Brend de Coen, Sara Bals, Nadine Schrenker
Summary: The structural stability of perovskite solar cells (PSCs) with different electron transfer layers (ETL) was investigated. It was found that the nanostructured ZnO ETL caused voids in the perovskite absorber, while the mesostructured TiO2 ETL improved the stability parameters of the absorber layer.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Arijeta Bafti, Marko Rukavina, Vilko Mandic, Ivana Panzic, Luka Pavic, Andraz Krajnc, Janez Volavsek
Summary: In this study, we investigated the changes in chemical and structural properties of geopolymers during curing at different temperatures. We specifically focused on geopolymers prepared with a mullite-based precursor obtained through sol-gel synthesis. By analyzing the Si-to-Al ratio in the precursors and the curing temperatures, we identified factors affecting geopolymerisation. Our characterization techniques included diffraction, vibrational spectroscopy, electron microscopy, and impedance spectroscopy. We also used solid-state magic angle spinning nuclear magnetic resonance to study the evolution of the geopolymer system as a function of curing temperature. Our findings provide insights into the optimal geopolymerisation conditions and the potential application of geopolymers in photovoltaic facade systems.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Zhen Shi, Hang Zeng, Zejun Zhang, Xiaowei Zhang, Lidija Curkovic, Vilko Mandic, Song Fu, Wei Wang, Jun Liu, Lizhong Zhao, Xuefeng Zhang
Summary: This article investigates the influence of surface coating treatment on the corrosion resistance of Nd-Fe-B permanent magnets, and proposes the optimum anti-corrosion performance of bilayer thin Al/Cr films. The film effectively prevents the penetration of corrosive ions and has no significant impact on the magnetic and mechanical properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Physical
Vilko Mandic, Stanislav Kurajica, Ivana Panzic, Arijeta Bafti, Juraj Sipusic, Katarina Muzina, Filip Brlekovic, Lara Gigli, Mattia Gaboardi
Summary: In this study, a conventional PXRD device was used to measure X-ray reflectivity of a thin-film without technical specifications. Modified equations were used to assess the thin-film parameters, and the results were compared with other methods. The PXRD setup was found to be a precise method, but has limitations for complex multilayer thin-film configurations with similar refraction properties.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Vilko Mandic, Ivana Panzic, Ivan Brnardic, Igor Jajcinovic, Maja Micetic
Summary: Thin films of nanostructured titania with different levels of microstructural order and surface chemistry were prepared by anodization of titanium. The contributions to nanostructured titania and its photocatalytic behavior were demystified and found to be mainly determined by specific compositional and morphological differences in the films. The films were divided into three categories based on their distinctive constituents: top porous non-stoichiometric titania, mid tubular nanoformations, and bottom dense titania.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Arijeta Bafti, Vilko Mandic, Ivana Panzic, Luka Pavic, Vedrana Spada
Summary: There is a high demand for customized and downsized gas sensors. This study implemented sensing principles into solar cells, creating a two-in-one solar cell and humidity sensor. By modifying the photoactive layer of the solar cell, the sensing performance of the semiconducting material was significantly improved.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Polina A. Morozova, Sergey V. Ryazantsev, Artem D. Dembitskiy, Anatolii V. Morozov, Gangadhar Das, Giuliana Aquilanti, Mattia Gaboardi, Jasper R. Plaisier, Alexander A. Tsirlin, Igor A. Presniakov, Artem M. Abakumov, Stanislav S. Fedotov
Summary: The electronic structure of cobalt-doped potassium manganese hexacyanoferrate positive electrode material for potassium-ion batteries was investigated. The cobalt doping resulted in the formation of K2-delta CoxMn1-x[Fe(CN)6] compounds with different crystal structures. The electrochemical properties of the electrode materials also showed a strong dependence on the cobalt doping, affecting both the specific capacity and redox potential.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Min Li, Mattia Gaboardi, Angelo Mullaliu, Mariam Maisuradze, Xilai Xue, Giuliana Aquilanti, Jasper Rikkert Plaisier, Stefano Passerini, Marco Giorgetti
Summary: This study investigates two types of manganese hexacyanoferrates (MnHCF) materials with different vacancy contents and finds that the sample with lower vacancy content exhibits better electrochemical performance in cycled electrodes compared to the sample with higher vacancy content.
Article
Thermodynamics
S. Kurajica, V. Mandic, K. Muzina, I. Panzic, D. Kralj, M. Duplancic, I. K. Ivkovic
Summary: This study investigates the synthesis and properties of cerium aluminate catalyst. The catalyst is prepared through combustion synthesis involving aluminum and cerium nitrates and glycine in the presence of palladium chloride. The obtained material is characterized using various techniques, and it is found to exhibit high catalytic activity for the toluene oxidation process.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Materials Science, Multidisciplinary
Francesco Armetta, Mattia Gaboardi, Jasper Plaisier, Maria Luisa Saladino
Summary: Yttrium aluminium gallium garnet (YAGG) doped with rare-earth ions has been synthesized via the urea glass route followed by thermal treatment. The formation of the garnet was studied in situ using synchrotron powder diffraction. The results show that the onset of formation of the garnet is about 860 degrees C, with comparable cell parameters for both undoped and doped YAGG. A possible growth mechanism of YAGG is discussed based on observed microstructural parameters.
Article
Engineering, Electrical & Electronic
Eleftherios Christopoulos, Mohamed M. Elsenety, Andreas Kaltzoglou, Constantinos C. Stoumpos, Mattia Gaboardi, Jasper R. Plaisier, Polychronis Tsipas, Elias Stathatos, Evangelos G. Vitoratos, Athanasios Dimoulas, Polycarpos Falaras
Summary: This study explores the use of the ionic liquid 1-hexyl-3-methylimidazolium iodide (HMImI) for the synthesis of a lead halide derivative, (HMIm)PbI3, which enhances the efficiency and stability of perovskite solar cells. The (HMIm)PbI3 compound forms 1D chains and acts as a semiconductor with a band gap of 2.85 eV. When deposited on top of the main perovskite absorber, it improves the radiative recombination and open circuit voltage by reducing trap state density, while preventing humidity penetration and ion migration.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Michele Sidoli, Giacomo Magnani, Laura Fornasini, Silvio Scaravonati, Alberto Morenghi, Vincenzo Vezzoni, Danilo Bersani, Giovanni Bertoni, Mattia Gaboardi, Mauro Ricco, Daniele Pontiroli
Summary: This work investigates the performance of novel negative electrodes for Li-ion batteries based on defective graphene synthesized via a scalable thermal exfoliation of graphite oxide and decorated with TiO2 nanoparticles. The synthesized materials were electrochemically tested, and the results showed significant improvement in capacity, reversibility, and high-rate capability, even with the addition of a small amount of graphene.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Lovro Liveric, Tamara Holjevac Grguric, Vilko Mandic, Robert Chulist
Summary: The influence of manganese content on the formation of martensite structure and the final properties of a quaternary Cu-Al-Mn-Ag shape memory alloy was investigated. It was found that the addition of silver contributes to the formation of the martensite structure. The alloy with 7%wt. of manganese forms stable martensite even in the as-cast state.