Article
Chemistry, Physical
Ramon Azpiroz, Enrique Carretero, Ana Cueva, Aida Gonzalez, Manuel Iglesias, Jesus J. Perez-Torrente
Summary: The magnetron sputtering technique is successfully used to prepare porous TiO2 thin films on soda-lime glasses. The morphology of the thin layers is influenced by deposition parameters, and the best angle and oxidation level achieve desired porosity and film thickness. The presence of a porous film is essential for achieving photocatalytic activity.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Applied
A. N. Fouda
Summary: The deposition of TiO2 thin films on quartz substrates was conducted using RF-magnetron sputtering technique. The presence of varying oxygen fraction had a significant impact on the surface morphology, structure, electrical and optical properties of the films. It was found that decreasing the oxygen fraction level led to the promotion of phase transformation and an enhancement in electrical conductivity, with the TiO2 films showing well-oriented crystal orientation at a specific oxygen fraction of 0.1%.
MODERN PHYSICS LETTERS B
(2021)
Article
Crystallography
Daniel Dorow-Gerspach, Dieter Mergel, Matthias Wuttig
Summary: Highly conductive TiO2 films with different Nb doping levels were prepared under precise oxygen partial pressure control. The doping efficiency of Nb is high, and the conductivity is limited by factors such as Nb oxidation and formation of scattering centers with increasing oxygen partial pressure and Nb concentration.
Article
Energy & Fuels
Samira Abdullayeva, Shikhamir Eminov, Khuraman Jalilova, Nahida Musayeva, Jafar Guliyev, Akif Aliyev, Vusala Majidzade, Gultekin Mammadova
Summary: Highly ordered transparent thin films of TiO2 with nanotube (TNT) arrays were successfully synthesized by electrochemical anodization. Analysis of the samples showed the presence of highly ordered TNT arrays with a high degree of optical transmission. The anodization time had an impact on the surface morphology and regularity of the pores. X-ray diffraction and Raman spectroscopy confirmed the presence of the anatase phase in the samples.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Tingting Liu, Jiancheng Liu, Yu Yang, Xiaomei Wang, Tong Zhou, Guangchao Yin, Fuchao Jia, Bo Liu
Summary: In this study, one-dimensional titanium dioxide nanorods (TiO2NRs), two-dimensional titanium dioxide nano-plates (TiO2NPs) and three-dimensional titanium dioxide nanospheres (TiO2NSs) sensitized by boron nitride quantum dots (BNQDs) were successfully synthesized via the hydrothermal method. The crystal phase, micro-structure, and chemical bonding states of the samples were characterized. The gas-sensing performances of the TiO2-based sensors were investigated, and it was found that BNQDs/TiO2NRs, BNQDs/TiO2NPs, and BNQDs/TiO2NSs sensors exhibited significant enhancement of gas sensing performance to acetone at 320 degrees C.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Roberto Villarroel, Dario Zambrano-Mera, Rodrigo Espinoza-Gonzalez, Katherine Paredes-Gil, Stefano Pantaleone, Luis Ballesteros, Gerko Oskam, Jose A. Garcia-Merino, Samuel A. Hevia, Guillermo Gonzalez-Moraga
Summary: This study investigated the hydrogenation process and photoactivity improvement of anatase TiO2 thin films produced by direct-current reactive magnetron sputtering. The structural changes and enhanced photoactivity were found to be related to the formation of defects at the surface of the hydrogenated films.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Krishna Manwani, Emila Panda
Summary: In this study, Nb-doped anatase TiO2 films with high conductivity were successfully prepared by tuning the microstructure, showing excellent electrical properties and transmittance that make them promising transparent conductors across the entire spectrum.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Bo Wang, Shicheng Wei, Lei Guo, Yujiang Wang, Yi Liang, Wei Huang, Fangjie Lu, Xianhua Chen, Fusheng Pan, Binshi Xu
Summary: This study systematically investigated the effect of sputtering power on the microstructure, anti-corrosion, and anti-fouling properties of TiO2 films deposited on 5083 aluminum alloy at room temperature. The results showed that the TiO2 film mainly consisted of anatase and was composed of spherical and pyramidal particles. Increasing sputter power improved both the anti-corrosion and anti-bacterial properties. The best combination of anti-corrosion and anti-bacterial properties was observed at a power of 12 kW.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Pritha Biswas, Tamara D. Koledin, Skylar N. Farmer, Melissa K. Santala, Janet Tate
Summary: The transformation from amorphous to crystalline in TiO2 films in air leads to different polymorphs, which can be manipulated by introducing Sn into the system. Sn stabilizes the rutile structure at the Sn/TiO2 interfaces by scavenging oxygen, resulting in rutile formation.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Biochemistry & Molecular Biology
Irina Yu. Zhuravleva, Maria A. A. Surovtseva, Alina A. A. Alshevskaya, Nikolay V. V. Surovtsev, Konstantin A. A. Okotrub, Irina I. I. Kim, Dmitriy A. A. Nasimov, Natalia A. A. Bondarenko, Oleg S. S. Kuzmin, Olga V. V. Poveshchenko
Summary: This study developed an integral cytocompatibility index and a decision tree algorithm to assess the cytocompatibility of TiO2 and N-TiO2 coatings. The results showed that the sample dominated by the rutile phase exhibited the best cytocompatibility. The DTA provided more detailed information about cytocompatibility.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Jinghao Huo, Yijie Ren, Guoqiang Zhang, Xiaofei Wang, Shouwu Guo
Summary: In this study, hierarchical TiO2/C nanofibers with anatase/TiO2(B) mixed phases were successfully synthesized by a dual-template method. The TiO2/C anode exhibited high reversible discharge capacity, remarkable rate capacity, and stable sodium storage performance, making it a reliable approach for building superior performance TiO2 anode materials for sodium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Swapan Jana, Anil Krishna Debnath, Veerender Putta, Jitendra Bahadur, Anil Kumar Chauhan, Debarati Bhattacharya
Summary: The study investigated the growth of TiO2-x thin films influenced by sputter power and substrate temperature, revealing significant impacts on the surface structure and composition of the films. Crystallinity of the films was achieved only at elevated substrate temperatures, and surface roughness and mass density increased with higher sputter power for films deposited at elevated temperatures.
SURFACE AND INTERFACE ANALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Carla Calabrese, Amelie Maertens, Alessandra Piras, Carmela Aprile, Leonarda Francesca Liotta
Summary: TiO2 nanomaterials were synthesized through a sol-gel method using titanium butoxide as a precursor, Pluronic F127 as a template, toluene as a swelling agent, and acidic water or ethanol as reaction solvents. The synthesis medium influenced the phase composition of the solids, with ethanol promoting dispersed anatase particles and water leading to a rutile phase. The photocatalytic activity of the samples was tested by the photodegradation of Rhodamine B.
Article
Materials Science, Multidisciplinary
Sam Macartney, Rong Liu, Richard Wuhrer, Leigh R. Sheppard
Summary: The effects of chromium doping on magnetron sputtered and thermally annealed Ta3N5 thin films were investigated for the first time. Structural and compositional evolution of these films were closely studied using XRD, SEM, and SIMS. Despite the favorable ionic radius, poor chromium solubility in Ta3N5 was indicated, requiring further work to characterize Cr-Ta3N5 with desirable properties.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Jekaterina Sydorenko, Arvo Mere, Malle Krunks, Marina Krichevskaya, Ilona Oja Acik
Summary: This study focuses on the development of low-material-quantity, transparent, anatase TiO2 nanoparticle free thin films as photocatalytic materials and their photocatalytic activity under UV-A and VIS light for indoor air pollution control, showing promising potential for VOC removal.
Article
Materials Science, Multidisciplinary
N. Jayaprakash, R. Suresh, S. Rajalakshmi, S. Raja, E. Sundaravadivel, M. Gayathri, M. Sridharan
MATERIALS TECHNOLOGY
(2020)
Review
Chemistry, Analytical
Veena Mounasamy, Ganesh Kumar Mani, Sridharan Madanagurusamy
Article
Engineering, Electrical & Electronic
A. Jansi Santhosam, K. Ravichandran, Mohd. Shkir, M. Sridharan
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Chemistry, Physical
Veena Mounasamy, Ganesh Kumar Mani, Kazuyoshi Tsuchiya, Sridharan Madanagurusamy
Summary: This study proposed a new method for sensing elements in wearables, using standalone PLLA/V2O5 nanosheets to improve ammonia sensing response. Surface modification of PLLA substrates using nanoimprint lithography was implemented to enhance sensing performance.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
M. Vadivel, R. Ramesh Babu, M. Sridharan
Summary: This study reports the characteristics of Cr3+- and Zn2+-substituted CoFe2O4 thin films prepared by solution-based spray pyrolysis method. The results show that the substitution of transition metal ions significantly affects the surface topography and gas-sensing behavior of the films. Cr3+-substituted CoFe2O4 thin films exhibit excellent sensing behavior towards NH3 gas at room temperature.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Applied
M. Vadivel, R. Ramesh Babu, M. Sridharan
Summary: This study reports the NH3 gas-sensing properties of homemade spray deposited CoFe2O4 thin films substituted with La3+ and Sm3+ ions. The results show that the substitution significantly enhances the gas-sensing characteristics of the films, making them potential materials for room temperature NH3 gas sensors even at low ppm concentrations.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Materials Science, Multidisciplinary
K. Veera Prabu, Vinothkumar Lourdhusamy, Immanuel Paulraj, M. Sridharan, Chia-Jyi Liu
Summary: The weighted mobility is a better descriptor of the optimal performance of electronic transport for thermoelectric materials. Sn doping on the electronegative Sb site lowered the electrical resistivity and enhanced the power factor of p-Mg3Sb2. The highest power factor of the Mg3Sb1.96Sn0.04 alloy is 2.55 mu W/cm-K-2 having 16 times enhancement as compared to the pristine Mg3Sb2 at 700 K.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Thangavel Ravikumar, Logu Thirumalaisamy, Sridharan Madanagurusamy, Kalainathan Sivaperuman
Summary: Ammonia (NH3) production, storage, and transportation are susceptible to leaks, posing risks to the environment and human life. Detecting NH3 within the exposure limit is crucial for eliminating health hazards. Thin films of zinc ferrite (ZF) were deposited using spray pyrolysis at different substrate temperatures. The film deposited at 225 degrees C showed a good sensing response to 25 ppm of NH3 and exhibited stability over 90 days. This research demonstrates that ZF thin films can effectively detect NH3 in the environment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
K. Gayathri, K. Ravichandran, M. Sridharan, S. Suvathi, S. Sriram, R. Mohan, A. Jansi Santhosam, P. K. Praseetha, P. Sakthivel
Summary: Metal oxide based semiconductors, particularly Mo-doped SnO2 films, show promise in the development of cost-effective gas sensors. This study investigated the gas sensing ability of SnO2 films doped with different concentrations of Mo. Results showed that the SnO2:Mo film with 1wt% Mo doping exhibited the best response and recovery times. Changes in crystal structure, oxygen vacancies, surface morphology, grain size, and surface roughness caused by Mo doping were found to enhance the gas sensing performance.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Veena Mounasamy, Ganesh Kumar Mani, Kazuyoshi Tsuchiya, Sridharan Madanagurusamy
Summary: This study proposes a strategy for the preparation of freestanding nanosheets using sputtering technique for sensing toxic ammonia (NH3). The evaluated sputtered vanadium pentoxide (V2O5) film showed good sensor response to 5 ppm NH3 at room temperature.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Veera Prabu Kannan, Immanuel Paulraj, Vinothkumar Lourdhusamy, Chia-Jyi Liu, Sridharan Madanagurusamy
Summary: The chalcopyrite compound zinc tin antimonide (ZnSnSb2) is a promising thermoelectric material with high electrical conductivity, non-toxicity, low cost, and abundant availability. The synthesis of ZnSnSb2 by a simple one-step Solid-State Reaction method and the characterization of its microstructural and electronic transport properties were studied.
MATERIALS TODAY-PROCEEDINGS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Veera Prabu Kannan, Veena Mounasamy, Sridharan Madanagurusamy
Summary: The TiO2-VOx mixed metal oxide thin film deposited by reactive co-sputtering technique shows higher selectivity and sensitivity towards DMA vapor compared to binary oxides VOx and TiO2.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
P. Kamaraj, M. Sridharan, Vennila raj, J. Arockiaselvi, T. Pushpamalini, P. A. Vivekanand
Summary: A series of ZnO nanoparticles were successfully synthesized via a biosynthesis method, and characterized using various techniques. The nanoparticles showed superior photocatalytic activities for indigo carmine degradation under visible light irradiation, along with high stability and reusability.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Chemistry, Multidisciplinary
Veena Mounasamy, Ganesh Kumar Mani, Dhivya Ponnusamy, Kazuyoshi Tsuchiya, P. R. Reshma, Arun K. Prasad, Sridharan Madanagurusamy
NEW JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Physical
K. Ravichandran, A. Jansi Santhosam, M. Sridharan
SURFACES AND INTERFACES
(2020)
