Results 41 to 50 of about 70,853 (271)

Chemical Vapor Deposition of silicon nanodots on TiO2 submicronic powders in vibrated fluidized bed [PDF]

, 2010
Silicon nanodots have been deposited on TiO2 submicronic powders in a vibrated Fluidized Bed Chemical Vapor Deposition (FBCVD) reactor from silane SiH4. Deposition conditions involving very low deposition rates have been studied. After treatment, powders
Cadoret, Loic, Caussat, Brigitte, Dexpert-Ghys, Jeannette, Rossignol, Cécile   +3 more
core   +3 more sources

Preparation and Investigation of the Thermal Stability of Phosphate-modified TiO2 Anatase Powders and Thin Films

Acta Chimica Slovenica, 2017
The temperature dependence of the anatase-to-rutile phase transition of TiO2 powders and thin films was studied. In order to shift the phase transition to higher temperature, samples were doped with a different amount of phosphate ions and their ...
Uroš Prah, Irena Kozjek Škofic
doaj   +1 more source

NH3 adsorption on anatase-TiO2(101) [PDF]

The Journal of Chemical Physics, 2018
The adsorption of ammonia on anatase TiO2 is of fundamental importance for several catalytic applications of TiO2 and for probing acid-base interactions. Utilizing high-resolution scanning tunneling microscopy (STM), synchrotron X-ray photoelectron spectroscopy, temperature-programmed desorption (TPD), and density functional theory (DFT), we identify ...
Stig Koust, Kræn C. Adamsen, Esben Leonhard Kolsbjerg, Zheshen Li, Bjørk Hammer, Stefan Wendt, Jeppe V. Lauritsen   +6 more
openaire   +3 more sources

The biocompatibility of titanium in a buffer solution: compared effects of a thin film of TiO2 deposited by MOCVD and of collagen deposited from a gel [PDF]

, 2007
This study aims at evaluating the biocompatibility of titanium surfaces modified according two different ways: (i) deposition of a bio-inert, thin film of rutile TiO2 by chemical vapour deposition (MOCVD), and (ii) biochemical treatment with collagen gel,
Alain N. Gleizes, B. FENG, C. SITTING, C. SRINIVASAN, Christos Sarantopoulos, D. IONESCU, D. R. JACKSON, Dana Iordachescu, F. MABBOUX, G. A. BATTISTON, G. GIAVARESI, G. GIAVARESI, I. BUJOR-IONESCU, I. C. LAVOS-VALERETO, Ioana Demetrescu, J. PAN, L. BAXTER, L. ZHAO, M. A. CROCE, M. BEREZNAI, M. BROWNE, M. BUHLER, M. F. MAITZ, M. MORRA, M. P. CASALETTO, M. TAKEUCHI, M. TEXTOR, M. V. POPA, P. J. VEZEAU, P. J. VEZEAU, S. HIROMOTO, S. POPESCU, Simona Popescu, T. HANAWA, T. JINNO, T. MOSMANN, U. GEISSLER, Y. T. SUL   +37 more
core   +4 more sources

High-Pressure Study of Anatase TiO2 [PDF]

Materials, 2010
We report resistivity and thermo-electric power measurements of the anatase phase of TiO2under pressure up to 2.3 GPa. Despite its transparent appearance, the single crystal of anatase exhibits a metallic-like resistivity above 60 K, at all pressures.
Jaćimović, Jaćim, Vâju, Cristian, Gaál, Richard, Magrez, Arnaud, Berger, Helmuth, Forró, László   +5 more
openaire   +1 more source

Comparing the contribution of visible-light irradiation, gold nanoparticles, and titania supports in photocatalytic nitroaromatic coupling and aromatic alcohol oxidation [PDF]

, 2016
Under visible-light irradiation, gold nanoparticles (Au NPs) supported by titania (TiO₂) nanofibers show excellent activity and high selectivity for both reductive coupling of nitroaromatics to corresponding azobenzene or azoxylbenzene and selective ...
Bo, Arixin, Chen, Chao, Huang, Yiming, Ke, Xuebin, Liu, Hongwei, Sheng, Xianliang, Zhao, Jian, Zhu, Huaiyong   +7 more
core   +1 more source

Controlling the Electrical Properties of Undoped and Ta-doped TiO2 Polycrystalline Films via Ultra-Fast Annealing Treatments [PDF]

, 2015
We present a study on the crystallization process of undoped and Ta doped TiO2 amorphous thin films. In particular, the effect of ultra-fast annealing treatments in environments characterized by different oxygen concentrations is investigated via in-situ
Concina, Deák, Deák, Ellmer, Engel, Furubayashi, Ghosh, Hagfeldt, Hitosugi, Hoang, Hoang, Huy, Juarez-Perez, Kirchartz, Knauth, Lee, Lee, Lee, Leichtweiss, Liu, Lü, Mazzolini, O'Regan, Ok, Okazaki, Park, Park, Park, Pore, Robertson, Rusydi, Setvin, Shi, Snaith, Tang, Tang, Wang, Weibel, Weng, Yamada, Yamamoto, Yang, Zhang   +42 more
core   +2 more sources

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

Advanced Functional Materials, EarlyView.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova, Ivan V. Zelepukin, Konstantin G. Shevchenko, Gleb V. Tikhonowski, Lyubov V. Gorelik, Anton A. Popov, Anna S. Sogomonyan, Alina Yu. Kapitannikova, Ivan S. Kazantsev, Dmitry V. Dyubo, Daria A. Panova, Daniil I. Tselikov, Anton A. Minnekhanov, Aziz B. Mirkasymov, Georgy A. Ermolaev, Alexander V. Syuy, Gleb I. Tselikov, Aleksey V. Arsenin, Andrei V. Kabashin, Kostya S. Novoselov, Sergey M. Deyev, Valentyn S. Volkov   +21 more
wiley   +1 more source

Textural evolution and phase transformation in titania membranes: Part 2. - Supported membranes [PDF]

, 1993
Nanostructural evolution and phase transformation in supported and unsupported titania membranes have been studied using Raman spectroscopy, X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM).
Burggraaf, Anthonie J., Keizer, Klaas, Kumar, Krishnankutty-Nair P., Nagamoto, Hidetoshi, Okubo, Tatsuya   +4 more
core   +2 more sources

Enhanced Li‐Ion Battery Performance with Hybrid MXene/GnR Electrodes: Heterojunctions and Engineered Architectures Supported by DFT Mechanistic Studies for Improved Rate Performance, Stability & Capacity

Advanced Functional Materials, EarlyView.
Lithium‐ion batteries (LIBs) remain central to energy storage but suffer from slow ion transport and degradation. Here, we present a binder‐free Ti3C2Tx MXene/GnR hybrid electrode with a porous 3D architecture formed via freeze casting. The structure enhances conductivity, ion transport, and stability, delivering 401 mAh/g, ∼97% efficiency, and 92 ...
Sara Mohseni Taromsari, Meysam Salari, Dipali Nayak, Saeed Habibpour, Ling Wei Hwang, Cristopher Carreiro, Carlos M. Da Silva, Aiping Yu, Chul B. Park, Cristina H. Amon, Hani E. Naguib   +10 more
wiley   +1 more source