Article
Chemistry, Analytical
Karolina Syrek, Sylwia Kemona, Joanna Czopor, Leszek Zaraska, Grzegorz D. Sulka
Summary: In this study, nanostructured iron oxide was obtained through anodization, and its crystalline phases were identified using XRD analysis. It was found that the material can efficiently absorb visible light.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Karolina Syrek, Monika Soltys-Mroz, Kinga Pawlik, Magdalena Gurgul, Grzegorz D. Sulka
Summary: This work presents a systematic study on the influence of Cu2+ ion concentration on the properties of anodic CuOx-TiO2 materials. It was found that band gap engineering based on coupling CuO with TiO2 is effective in increasing visible light absorption.
Article
Chemistry, Physical
Monika Soltys-Mroz, Karolina Syrek, Ewelina Wiercigroch, Kamilla Malek, Krzysztof Rokosz, Steinar Raaen, Grzegorz D. Sulka
Summary: This study investigated the semiconducting and photoelectrochemical properties of nanotubular FeOx-TiO2 annealed at different temperatures, revealing that the annealing temperature has an impact on the photoelectrochemical response of the materials, with the sample annealed at 500°C showing the lowest band gap value.
JOURNAL OF POWER SOURCES
(2021)
Article
Electrochemistry
Krystyna Mika, Karolina Syrek, Tomasz Uchacz, Grzegorz D. Sulka, Leszek Zaraska
Summary: This study presents a comprehensive characterization of the photoelectrochemical activity of dark ZnO layers formed by anodic oxidation of metallic zinc, and reveals the relationship between morphology variations under different processing conditions and photoelectrochemical performance.
ELECTROCHIMICA ACTA
(2022)
Article
Engineering, Aerospace
Xu Dai, Chen Wen, Liang Wu, Lei Liu, Yulong Wu, Xingxing Ding, Jiahao Wu, Wenjun Ci, Aitao Tang, Fusheng Pan
Summary: In this study, a thick composite anodic oxide film was fabricated on Ti-10V-2Fe-3Al alloys using environmentally friendly malic acid electrolyte containing PTFE nanoparticles. The research investigated the influence of pulse frequency on the morphology and microstructure of the film, revealing the optimal conditions for wear resistance and corrosion properties. The results suggest that the combination of PTFE nanoparticles and malic acid electrolyte can significantly affect the energy fluctuation of electrochemical equilibrium and film formation process.
CHINESE JOURNAL OF AERONAUTICS
(2021)
Article
Chemistry, Physical
Krystyna Mika, Ewelina Wiercigroch, Marcin Pisarek, Marcin Koziel, Dorota Majda, Anton S. Lytvynenko, Grzegorz D. Sulka, Leszek Zaraska
Summary: This study demonstrates the electrochemical generation of nanowire arrays via one-step anodic oxidation of Zn in carbonate-based electrolytes with different pH values. The morphology of the anodic films was characterized, and the composition of the nanomaterials was analyzed using various techniques. The formation of a previously unknown phase of zinc carbonate and the generation of ZnO were observed during the anodization process. The changes occurring during thermal treatment and the photoelectrochemical performance of the ZnO nanostructures were also investigated.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Marwa Mohamed Abouelela, Go Kawamura, Wai Kian Tan, Atsunori Matsuda
Summary: By modifying ANP WO3 with Bi2S3 quantum dots, this study has successfully designed a photoanode with high current density and photoconversion efficiency, providing new insights and methods for the study of photoelectrochemical water splitting.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Siti Nurul Falaein Moridon, Khuzaimah Arifin, Mohamad Azuwa Mohamed, Lorna Jeffery Minggu, Rozan Mohamad Yunus, Mohammad B. Kassim
Summary: The presence of Mo2C as a cocatalyst on TiO2 nanotubes enhances their photoelectrochemical performance, leading to improved water-splitting capabilities. This study introduces a potentially effective method for developing efficient photoelectrodes based on TiO2.
Article
Energy & Fuels
Leonie Jakob, Leonard Tutsch, Thibaud Hatt, Johan Westraadt, Sinoyolo Ngongo, Markus Glatthaar, Martin Bivour, Jonas Bartsch
Summary: A novel strategy is introduced to reduce the consumption of scarce materials in silicon heterojunction solar cells by replacing silver in the metallization and reducing the thickness of the indium tin oxide layer. A Ti layer serves as both the contact layer and capping layer, enabling the use of a thinner transparent conductive oxide. The nonaqueous electrolyte used prevents critical side reactions, and promising results are obtained with a short circuit current density of 35 mA cm(-)(2) and a cell efficiency close to 21%.
Article
Energy & Fuels
Karolina Gawlak, Aleksandra Knapik, Grzegorz D. Sulka, Leszek Zaraska
Summary: A comprehensive characterization of photoelectrochemical properties of nanoporous SnOx films with different morphologies was conducted. The results showed that films with uniform channels exhibited optimal PEC performance at a specific anodizing duration, while the arrangement of segments in films with different channel diameters played a crucial role in PEC performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Monika Soltys-Mroz, Karolina Syrek, Lukasz Pieta, Kamilla Malek, Grzegorz D. Sulka
Summary: In this study, Fe2O3-TiO2 materials were synthesized by cathodic electrochemical deposition, and the effect of hematite content on the photoelectrochemical activity of the materials was investigated. The results showed that the amount of deposited iron and hematite content increased with deposition time, directly impacting the semiconducting properties and enhancing the photoelectrochemical water oxidation and visible light response of the materials.
Article
Chemistry, Applied
Dewangga Oky Bagus Apriandanu, Shinpei Nomura, Satoshi Nakayama, Chihiro Tateishi, Fumiaki Amano
Summary: In this study, Ti4+-doped Fe2O3 was prepared by hydrothermal treatment followed by two-step annealing process. The photoelectrochemical performance of the Ti-doped Fe2O3 photoanodes was significantly enhanced by the two-step annealing, achieving a photocurrent density of 0.55 mA/cm^2 under simulated one-sun illumination.
Article
Chemistry, Multidisciplinary
Tian Lan, Xinjian Xie, Qin Xu, Qi Peng, Lu Zhang, Meiyu Dong
Summary: Porous anodic alumina (PAA) films with periodically modulated pore diameters are prepared through cyclic anodization, showing different structures under varying current signals. This study provides guidance on regulating PAA structure by changing the current signal types.
Article
Materials Science, Ceramics
M. Schneider, L. Simunkova, A. Michaelis, M. Noeske, J. Aniol, K. Thiel
Summary: This study investigated the formation, chemical composition, and structure of an oxide layer on technical solid-state sintered ceramic in a strong alkaline solution at high anodic potentials. The oxide film on SiC was found to contradict thermodynamic laws, with a thickness of 30 nm and a composition of non-stoichiometric SiOx and SiOxCy. Aluminum doping from a sinter additive was also identified in the passive layer.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Daria Tishkevich, Alla Vorobjova, Anastasia A. Bondaruk, Elena S. Dashkevich, Dmitry L. Shimanovich, Ihar U. Razanau, Tatiana Zubar, Dmitry Yakimchuk, Mengge G. Dong, M. Sayyed, Hamoud H. Somaily, Denis A. Vinnik, Maxim Silibin, Sergei Trukhanov, Valery M. Fedosyuk, Alex Trukhanov
Summary: This article presents the results of studies on the wettability properties and preparation of porous anodic alumina (PAA) membranes with different pore sizes. The research found that the surface properties of alumina can be changed from hydrophilic to hydrophobic by adjusting the synthesis conditions. This study is of great significance in designing functional surfaces with tunable wettability.
Article
Electrochemistry
Marta Zych, Karolina Syrek, Marcin Pisarek, Grzegorz D. Sulka
Summary: In this study, anodic C,N-WO3 layers were obtained by in situ doping during anodic oxidation of metallic tungsten for the first time. The effects of applied potential and electrolyte concentration on the resulting oxide morphology and photoelectrochemical performance were investigated. The synthesized materials were characterized using various techniques, and the best photoelectrochemical performance was observed under specific conditions.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Rajesh Thomas, Magdalena Gurgul, Bruno Xavier, Sitaramanjaneya Mouli Thalluri, Isilda Amorim, Nan Zhang, Leszek Zaraska, Grzegorz D. Sulka, Lifeng Liu
Summary: Research shows that tin oxyphosphate (Sn/SnP2O7) exhibits better storage performance for lithium and sodium ions compared to Sn/SnOx, attributed to its unique metal/matrix structure.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Anton S. Lytvynenko, Agnieszka Brzozka, Andrey M. Mishura, Sergey Kolotilov, Grzegorz D. Sulka
Summary: Silver nanofoams were obtained on silver surface via electrodeposition, with irregularly shaped Ag filaments and void craters. Higher synthesis parameters result in larger observed crater diameters, while higher Ag+ concentration leads to wider filaments. Increased deposition time and current density lead to higher surface roughness.
APPLIED SURFACE SCIENCE
(2022)
Article
Electrochemistry
Krystyna Mika, Karolina Syrek, Tomasz Uchacz, Grzegorz D. Sulka, Leszek Zaraska
Summary: This study presents a comprehensive characterization of the photoelectrochemical activity of dark ZnO layers formed by anodic oxidation of metallic zinc, and reveals the relationship between morphology variations under different processing conditions and photoelectrochemical performance.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Karolina Syrek, Sylwia Kemona, Joanna Czopor, Leszek Zaraska, Grzegorz D. Sulka
Summary: In this study, nanostructured iron oxide was obtained through anodization, and its crystalline phases were identified using XRD analysis. It was found that the material can efficiently absorb visible light.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Krystyna Mika, Ewelina Wiercigroch, Marcin Pisarek, Marcin Koziel, Dorota Majda, Anton S. Lytvynenko, Grzegorz D. Sulka, Leszek Zaraska
Summary: This study demonstrates the electrochemical generation of nanowire arrays via one-step anodic oxidation of Zn in carbonate-based electrolytes with different pH values. The morphology of the anodic films was characterized, and the composition of the nanomaterials was analyzed using various techniques. The formation of a previously unknown phase of zinc carbonate and the generation of ZnO were observed during the anodization process. The changes occurring during thermal treatment and the photoelectrochemical performance of the ZnO nanostructures were also investigated.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Karolina Syrek, Olena Tynkevych, Mateusz Wojtas, Marcin Koziel, Lukasz Pieta, Leszek Zaraska
Summary: The possibility of fabricating nanostructured ZnO layers on conductive glass substrates via simple room-temperature electrodeposition was investigated. The deposits' morphology, composition, and semiconducting properties were examined using various techniques. The photoelectrochemical performance of the ZnO photoanodes was found to be greatly influenced by the electrodeposition duration, with the most promising activity observed for the photoanode deposited at -1.5 V vs. SCE for 40 min.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Karolina Syrek, Joanna Czopor, Monika Topa-Skwarczynska, Maciej Pilch, Kamil Kaminski, Joanna Ortyl, Grzegorz D. Sulka
Summary: An efficient hybrid photoanode for solar-driven water splitting experiments was developed by using anodic TiO2 layer covered with gold nanoparticles (AuNPs) and BODIPY microrods. The stability of BODIPY derivative (B-1) in different solvents was characterized for the preparation of the heterojunction photoelectrode. The novel heterojunctionphotoanode, combining the unique morphology of anodic TiO2 nanotubes with the electron trapping abilities of AuNPs andthe light absorption properties of the BODIPY dye, achieved a 15 times higher photocurrent (around 120 μA cm(-2)) compared to the pristine anodic TiO2 (around 8 μA cm(-2)).
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Sebastian Kotarba, Grzegorz D. Sulka, Karolina Syrek
Summary: Anodic TiO2 nanotubes were transformed into anatase after being heated to 400 degrees C for 2 h in air. Electrochemical reduction of the transformed nanotubes showed that the reduced black TiOx nanotubes were not stable in the presence of air, but their lifetime increased significantly when isolated from atmospheric oxygen. The study also revealed the sequence of polarization-induced reduction and spontaneous reverse oxidation reactions, as well as the effects of reduction on photocurrent generation, electron-hole recombination, and charge separation in the nanotubes. The determination of conduction band edge and Fermi level provided insight into electron trapping during the reduction process. These findings have implications for studying the spectroelectrochemical and photoelectrochemical properties of electrochromic materials.
Editorial Material
Biochemistry & Molecular Biology
Grzegorz Dariusz Sulka
Summary: In the field of materials science and engineering, the use of thin films and nanostructured materials to improve material properties has become common practice. Recent progress in customizing the unique properties, such as high surface area to volume ratio, surface charge, structure, anisotropic nature, and tunable functionalities, has expanded the range of applications to various fields including electronics, energy storage, sensing, optoelectronics, catalysis, and biomedicine. Advances have also been made in the importance of electrochemistry in the fabrication and characterization of functional thin films and nanostructured materials.
Article
Chemistry, Multidisciplinary
Bartosz C. Pruchnik, Janusz D. Fidelus, Ewelina Gacka, Krzysztof Kwoka, Julia Pruchnik, Adrianna Piejko, Lukasz Usydus, Leszek Zaraska, Grzegorz D. Sulka, Tomasz Piasecki, Teodor P. Gotszalk
Summary: This study presented a measurement method for nanowire resistance using nanomanipulation on a specially prepared substrate. The investigation showed that the resistance and resistivity of ZnO nanowires were dependent on the annealing temperature at 200°C and 300°C in air. The research on the electrical properties of nanowire-based structures and devices provides guidance for designing, fabricating, optimizing electromechanical nanodevices, and their safe operation in future electronic applications.
Article
Pharmacology & Pharmacy
Magdalena Jarosz, Jakub Latosinski, Pawel Gumulka, Monika Dabrowska, Mariusz Kepczynski, Grzegorz Dariusz Sulka, Malgorzata Starek
Summary: By synthesizing and determining the optimal composition of celecoxib-beta-cyclodextrin complexes, and using them in nanostructured titanium dioxide layers as drug delivery systems, effective drug release can be achieved, making it suitable for pain treatment, such as orthopedic surgeries.
Article
Chemistry, Multidisciplinary
Ewa Wierzbicka, Thorsten Schultz, Karolina Syrek, Grzegorz Dariusz Sulka, Norbert Koch, Nicola Pinna
Summary: This study introduces a core-shell structure composed of nanostructured self-standing titania nanotubes filled with Au nanowire array, which shows efficient photocurrent generation and photon conversion efficiency for photoelectrocatalytic water splitting.
MATERIALS HORIZONS
(2022)