· One-dimensional (1D) TiO 2 nanostructures are desirable as photoanodes in dye-sensitized solar cells (DSSCs) due to their superior electron-transport capability. However, making use of the DSSC performance of 1D rutile TiO 2 photoanodes remains challenging, mainly due to the small surface area and consequently low dye loading. Herein, a new type of photoanode …
Nowadays, rutile TiO 2 or anatase TiO 2 is prepared from titanium oxalate, but there are only few studies on the rutile/anatase TiO 2 mixed crystal. In this study, using potassium titanyl oxalate as the titanium source, titanium oxalate [Ti 2 O 3 (H 2 O) 2 (C 2 O 4)·H 2 O] has been prepared by a one-step hydrothermal method at 120 °C. When the temperature was increased to 150 °C, the …
· TiO 2 is a polymorphic compound that exists mainly in three crystallographic phases: anatase, rutile and brookite. They are different in their synthesis and properties among which rutile and anatase are the most commonly synthesized phases owing to their good thermodynamic characteristics and physical properties.
· of rutile TiO 2 1D nanostructures is reported. Materials Synthesis and Characterization Single crystalline rutile TiO 2 1D nanostructures were syn-thesized by annealing catalytic material-coated Ti grids in Ar at the atmospheric pressure. Typical synthetic conditions are described in this paragraph, whereas conditions used in
· Abstract. Pure rutile-phase TiO 2 (r-TiO 2) was synthesized by a simple one pot experiment under hydrothermal condition using titanium (IV) n-butoxide as a Ti-precursor and HCl as a peptizer.The TiO 2 products were characterized by XRD, TEM, ESCA, and BET surface area measurement. The r-TiO 2 were rodlike in shape with average size of nm at hydrothermal …
The synthesis of nano-TiO 2 materials have attracted intense interest due to their importance in a wide area of applications. In this study, we report a facile method to synthesize mixed-phase TiO 2 nanocomposites by using a one-step approach under mild solvothermal conditions. Differently from previous reports, this method not only yields rutile /brookite/anatase TiO 2 …
· The nanoporous rutile TiO 2 mesocrystals constructed by crystallographically oriented nanoparticle subunits with tunable microstructures were successfully prepared via a facile synthesis route. Such rutile TiO 2 architecture possesses a large surface area (157 m 2 g −1), nanoporous nature and single-crystal-like structure, which could provide ...
· Graphene oxide was obtained by the modified Hummers method [] from natural graphite.Synthesis of TiO 2 nanoparticles was carried out as described in [] through hydrolysis of titanium isopropoxide.The resulting TiO 2 NP powder was divided into two parts at the final stage: the first portion was annealed for 2 h at 250°С to obtain anatase; the second portion was …
· rutile as the seed [8] [17]. Photoactive rutile TiO 2 nanorods have been synthe-sized using titanium bis (ammonium lactate) dihydroxide as precursor by hy-drothermal method and by decorating with anatase nanoparticles [18]. Con-trolled synthesis of rutile TiO 2 microspheres, nanoflowers, nanotubes, nanobelts and single crystal rutile TiO
· Hydrothermal synthesis of rutile TiO 2 nanotubes film on Ti foil for photocatalytic degradation Y. Suna,b a, J. Qianc, Q. R. Zhao, S. S. Yanga, Y. Yanga, Q. Zhaod,* aSchool of Mechanical Engineering, Chengdu University, Chengdu, 610106, China bSichuan Province Engineering Research Center for Powder Met allurgy, Chengdu
Synthesis of micrometer-sized hierarchical rutile TiO 2 flowers and their application in dye sensitized solar cells†. Mohan Raj Subramaniam, Sriram Devanathan and Duraisamy Kumaresan * Centre of Excellence in Advanced Materials and Green Technologies, Department of Chemical Engineering and Materials Sciences, Amrita Vishwa Vidyapeetham University, Coimbatore …
· TiO 2 is transparent normally in the visible light region; its band gap is 3.0 eV for rutile and 3.2 eV for anatase crystalline phase. By doping or sensitization, it is possible to improve the optical activity of TiO 2 and to move its absorption threshold into the visible light region. The subject of this work is the synthesis by low tem-
· Bioenabled Synthesis of Rutile (TiO 2) ... Biomineral-forming organisms provide inspiration for developing new reaction pathways to functional materials, such as rutile for optical devices. A recombinant protein (rSilC) was designed based on the sequence of a silica-forming protein from a diatom. This unique protein induced the formation of ...
Synthesis of Mn-doped and anatase/rutile mixed-phase TiO 2 nanofibers for high photoactivity performance F. Fu, Y. Zhang, Y. Zhang and Y. Chen, Catal. Sci.
· Synthesis of SPR Au/BiVO 4 quantum dot/rutile-TiO 2 nanorod array composites as efficient visible-light photocatalysts to convert CO 2 and mechanism insight Author links open overlay panel Qiujin Shi a Zhijun Li b Lu Chen a Xuliang Zhang b Weihua Han c Mingzheng Xie a Jianlong Yang a Liqiang Jing b
Titanium dioxide (TiO 2 ) is also known as or Tatiana [1] The TiO 2 is an n-type semiconductor [2],with a three types crystalline :anatase, rutile, and brookit [3], the energy gaps of …
· In this work, we present a phase-selective synthesis of TiO 2 NCs with anatase and rutile crystal phases. The nanomaterials obtained were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), diffuse reflectance UV-Vis spectroscopy, and electron paramagnetic resonance spectroscopy (EPR).
Phase-pure TiO 2 nanocrystallites with narrow particle-size distributions were selectively prepared by hydrothermal processes starting from amorphous TiO 2.Autoclaving amorphous TiO 2 in the presence of HF and HCl as cooperative catalysts led to the formation of narrow-sized anatase TiO 2 with a regular crystalline surface. Use of nitric acid as a cooperative catalyst with HF also …
· The rutile phase of TiO 2 is tetragonal and exhibits symmetry characters of the space group P42/mnm with two TiO 2 molecules per unit cell. Four Raman active modes with symmetry of A 1g, B 1g, B 2g, and E g have been found (Mali et al. 2012a ) and were detected in rutile TiO 2 single crystal at 143 cm −1 ( B 1g ), 447 cm −1 ( E g ), 612 ...
Hydrothermal synthesis of rutile TiO 2 nanoflowers using Brønsted Acidic Ionic Liquid [BAIL]: Synthesis, characterization and growth mechanism† Sawanta S. Mali, a Chirayath A. Betty, b Popatrao N. Bhosale, c Rupesh S. Devan, d Yuan-Ron Ma …
· Synthesis and Characterization of Rutile TiO 2 Nanopowders Doped with Iron Ions. Nadica D Abazović 1, Luciana Mirenghi 2, Ivana A Janković 1, Nataša Bibić 1, Daniela V Šojić 3, Biljana F Abramović 3 & Mirjana I Čomor 1 Nanoscale Research Letters volume 4, Article number: 518 (2009) Cite this article
· Synthesis of pure phase rutile TiO 2 nanoparticle at low temperature using wet chemical method. • SEM image confirmed the spherical shape of the nanoparticle. • XRD pattern showed it is a single phase crystal structure. • FTIR spectra confirmed the present of …
· Synthesis and Characterization of Rutile TiO(2) Nanopowders Doped with Iron Ions. Abazović ND, Mirenghi L, Janković IA, Bibić N, Sojić DV, Abramović BF, Comor MI. Titanium dioxide nanopowders doped with different amounts of …
· Pure rutile phase of TiO 2 (R-TiO 2) nanocrystals were synthesized through a low temperature sol-gel synthesis route by tuning the chemical process.This modified process directly resulted in nano spindle structures of rutile TiO 2 at the instant of solvent evaporation and which further found exhibiting stabilized growth upon an increase in calcination temperatures as …
· Wang, WK., Chen, JJ., Zhang, X. et al. Self-induced synthesis of phase-junction TiO 2 with a tailored rutile to anatase ratio below phase transition temperature. Sci Rep 6, …
· TiO 2 exists in three main crystallographic forms; rutile, Anatase, and brookite (Mills and Le Hunte, 1997; Herrmann, 1999). The Anatase type has been selectively used for photocatalytic application and various other applications (Parsons, 2004). Rutile is a thermodynamically stable polymorph, but with low photocatalytic activity.
· 1. Introduction. TiO 2 is a semiconducting oxide having potential applications in various fields such as photocatalysis, efficient energy harvestors, nanoelectronics, environmental applications, water purification and sensors [,,,, ].It has the advantage of being inexpensive, chemically stable and nontoxic. Among the major three polymorphic forms of TiO 2, the rutile …
· Tongbin Lan, Tao Wang, Weifeng Zhang, Nae-Lih Wu, Mingdeng Wei,* Rutile TiO 2 Mesocrystals with Tunable Subunits as a Long-term Cycling Performance Anode for Sodium-ion Batteries, J. Alloys Compd., 2017, 699, 455-462.
· rutile nanorods, and anatase/rutile het-erojunction structure are obtained. Controllable material structure high-lights that this hydrogenation has significant practical potential for a generalized synthesis of hydrogenated TiO 2 with differing crystalline phase and morphology. Separately to the structural tunability of H-TiO 2,H-TiO 2is a ...
· The TiO 2 (rutile) and TiO 2 (anatase) ratio was determined by a technique described in Ref. [18] using the following equation: x a =[1+1.26(I r /I a)] −1, where x a is the share of anatase in the mixture, while I a and I r are the integrated intensities of the (101) reflection of anatase and the (110) reflection of rutile. Thermogravimetric ...
· synthesis of rutile nanowires is optimally performed through P25 nanoparticles containing both anatase and rutile phases, wherein they serve dual roles as both rutile seeds and TiO 2 nutrients. Anisotropic crystal growth of nanowires along the rutile c-axis results from lower solid−liquid interfacial energy
In this study, we first report the selective synthesis of TiO 2 nanorods of pure rutile, anatase and brookite TiO 2 by the hydrothermal treatment of precursor titanate nanosheets. The synthesized ...