Surface Characteristics of TiO2 and Their Effect on Specific Capacity in Lithium and Sodium Systems

2021 ◽  
Vol 105 (1) ◽  
pp. 61-68
Author(s):  
Nataliya I. Globa ◽  
Yurii V. Shmatok ◽  
Tatyana V. Lisnycha ◽  
Sviatoslav A. Kirillov
Keyword(s):  
Titanium Dioxide ◽  
High Temperature ◽  
Alkali Metal ◽  
Surface Properties ◽  
Alkaline Hydrolysis ◽  
Alkali Metal Cation ◽  
Specific Capacity ◽  
Surface Characteristics ◽  
High Temperature Annealing ◽  
Nanosized Titanium Dioxide

The paper presents the results of studies of nanosized titanium dioxide (TiO2) samples synthesized by alkaline hydrolysis. The surface properties of the samples were modified using high-temperature annealing. As a result, samples with a specific surface area of 31-203 m2/g were obtained. The specific capacity of TiO2 in lithium and sodium cells was determined. It is noted that the nature of the curves obtained, the specific capacity and its stability during cycling depend on the nature of the alkali metal cation and the surface properties of TiO2.

Comparative Effect of Hydrophilic and Lipophilic Nanosized Titanium Dioxide on the Properties of Coated Paper

2012 ◽  
Vol 441 ◽  
pp. 750-753 ◽  
Author(s):  
Yan Jun Tang ◽  
Man Chen ◽  
You Ming Li ◽  
Yu Zhao ◽  
Xiu Mei Zhang
Keyword(s):  
Titanium Dioxide ◽  
Optical Properties ◽  
Surface Properties ◽  
Comparative Effect ◽  
Paper Coating ◽  
Coated Paper ◽  
Surface Strength ◽  
Paper Properties ◽  
Nanosized Titanium Dioxide

In this paper, the effect of the charge of hydrophilic and lipophilic nanosized TiO2 on the optical properties and printability of coated paper was investigated. The parameters including brightness, opacity, surface strength and sizing degree were used to evaluate the optical properties and printability of coated paper. The effects of hydrophilic and lipophilic TiO2 on the properties of coated paper were discussed. It was shown that the optical properties and printability of coated paper increase persistently with the change of nanosized TiO2 charged from 5% to 15%. Once the charge of nanosized TiO2 was over 15%, the main properties of coated paper took on a downward tendency. The properties of coated paper were related to the surface properties of nanosized TiO2 samples. It was found that the lipophilicity of nanosized TiO2 sample played a more important role in the improvement of the coated paper properties, which was believed to be based on the fact that lipophilic nanosized TiO2 could be well compatible with the binders used in the paper coating.

THE RELATIONSHIP BETWEEN BULK AND SURFACE PROPERTIES OF RUTILE TiO2(110)

2000 ◽  
Vol 07 (05n06) ◽  
pp. 613-617 ◽  
Author(s):  
ULRIKE DIEBOLD ◽  
MIN LI ◽  
OLGA DULUB ◽  
ELEONORE L. D. HEBENSTREIT ◽  
WILHELM HEBENSTREIT
Keyword(s):  
High Temperature ◽  
Surface Properties ◽  
Room Temperature ◽  
Scanning Tunneling ◽  
High Temperature Annealing ◽  
Tunneling Microscopy ◽  
Surface Restructuring ◽  
Light Blue ◽  
Restructuring Process ◽  
The Relationship

We report scanning tunneling microscopy and complementary spectroscopic measurements on TiO 2(110) surfaces. We show data on (i) a surface restructuring process that results from annealing in oxygen; (ii) Pt clusters, grown at room temperature and encapsulated upon high temperature annealing; and (iii) adsorption of sulfur. In each case, heavily reduced, dark crystals show a very different behavior than more stoichiometric, light blue ones.

Defect reduction in oxygen implanted silicon-on-insulator material during high-temperature annealing

1989 ◽  
Vol 47 ◽  
pp. 604-605
Author(s):  
P. Roitman ◽  
B. Cordts ◽  
S. Visitserngtrakul ◽  
S.J. Krause
Keyword(s):  
High Temperature ◽  
Annealing Temperature ◽  
Silicon On Insulator ◽  
High Dose ◽  
High Temperature Annealing ◽  
High Current ◽  
Defect Reduction ◽  
Annealing Step ◽  
Multiple Cycle ◽  
Defect Densities

Synthesis of a thin, buried dielectric layer to form a silicon-on-insulator (SOI) material by high dose oxygen implantation (SIMOX – Separation by IMplanted Oxygen) is becoming an important technology due to the advent of high current (200 mA) oxygen implanters. Recently, reductions in defect densities from 109 cm−2 down to 107 cm−2 or less have been reported. They were achieved with a final high temperature annealing step (1300°C – 1400°C) in conjunction with: a) high temperature implantation or; b) channeling implantation or; c) multiple cycle implantation. However, the processes and conditions for reduction and elimination of precipitates and defects during high temperature annealing are not well understood. In this work we have studied the effect of annealing temperature on defect and precipitate reduction for SIMOX samples which were processed first with high temperature, high current implantation followed by high temperature annealing.

FERROPERM

Alloy Digest ◽  
1993 ◽  
Vol 42 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Physical Properties ◽  
Saturation Magnetization ◽  
Pure Iron ◽  
Magnetic Alloy ◽  
High Saturation Magnetization ◽  
High Temperature Annealing ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy

Abstract Ferroperm is a soft magnetic alloy that contains 1% aluminum. This addition of aluminum combined with high-temperature annealing increases permeability and reduces coercivity without decreasing the high-saturation magnetization of pure iron. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming. Filing Code: FE-99. Producer or source: NKK Corporation.

Preparation of silicon-based nanowires through high-temperature annealing

2018 ◽  
Vol 42 (1) ◽  
pp. 149-158
Author(s):  
SHUANG XI ◽  
SHUANGSHUANG ZUO ◽  
YING LIU ◽  
YINLONG ZHU ◽  
YUTU YANG ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Annealing ◽  
Silicon Based
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