Effect of calcination conditions on porous reduced titanium oxides and oxynitrides via a preceramic polymer route

George Hasegawa; Tatsuya Sato; Kazuyoshi Kanamori; Cheng-Jun Sun; Yang Ren; Yoji Kobayashi; Hiroshi Kageyama; Takeshi Abe; Kazuki Nakanishi

doi:10.1021/ic502972v

Effect of calcination conditions on porous reduced titanium oxides and oxynitrides via a preceramic polymer route

George Hasegawa^*, Tatsuya Sato, Kazuyoshi Kanamori, Cheng-Jun Sun, Yang Ren, Yoji Kobayashi, Hiroshi Kageyama, Takeshi Abe, Kazuki Nakanishi

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

12 Citations (Scopus)

Abstract

A preceramic polymer route from Ti-based inorganic-organic hybrid networks provides electroconductive N-doped reduced titanium oxides (Ti _n O _2n-1 ) and titanium oxynitrides (TiO _x N _y ) with a monolithic shape as well as well-defined porous structures. This methodology demonstrates an advantageously lower temperature of the crystal phase transition compared to the reduction of TiO ₂ by carbon or hydrogen. In this study, the effect of calcination conditions on various features of the products has been explored by adopting three different atmospheric conditions and varying the calcination temperature. The detailed crystallographic and elemental analyses disclose the distinguished difference in the phase transition behavior with respect to the calcination atmosphere. The correlation between the crystallization and nitridation behaviors, porous properties, and electric conductivities in the final products is discussed.

Original language	English
Pages (from-to)	2802-2808
Journal	Inorganic Chemistry
Volume	54
Issue number	6
DOIs	https://doi.org/10.1021/ic502972v
Publication status	Published - 16 Mar 2015
Externally published	Yes

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title = "Effect of calcination conditions on porous reduced titanium oxides and oxynitrides via a preceramic polymer route",

abstract = "A preceramic polymer route from Ti-based inorganic-organic hybrid networks provides electroconductive N-doped reduced titanium oxides (Ti n O 2n-1 ) and titanium oxynitrides (TiO x N y ) with a monolithic shape as well as well-defined porous structures. This methodology demonstrates an advantageously lower temperature of the crystal phase transition compared to the reduction of TiO 2 by carbon or hydrogen. In this study, the effect of calcination conditions on various features of the products has been explored by adopting three different atmospheric conditions and varying the calcination temperature. The detailed crystallographic and elemental analyses disclose the distinguished difference in the phase transition behavior with respect to the calcination atmosphere. The correlation between the crystallization and nitridation behaviors, porous properties, and electric conductivities in the final products is discussed.",

author = "George Hasegawa and Tatsuya Sato and Kazuyoshi Kanamori and Cheng-Jun Sun and Yang Ren and Yoji Kobayashi and Hiroshi Kageyama and Takeshi Abe and Kazuki Nakanishi",

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T1 - Effect of calcination conditions on porous reduced titanium oxides and oxynitrides via a preceramic polymer route

AU - Hasegawa, George

AU - Sato, Tatsuya

AU - Kanamori, Kazuyoshi

AU - Sun, Cheng-Jun

AU - Ren, Yang

AU - Kobayashi, Yoji

AU - Kageyama, Hiroshi

AU - Abe, Takeshi

AU - Nakanishi, Kazuki

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2015/3/16

Y1 - 2015/3/16

N2 - A preceramic polymer route from Ti-based inorganic-organic hybrid networks provides electroconductive N-doped reduced titanium oxides (Ti n O 2n-1 ) and titanium oxynitrides (TiO x N y ) with a monolithic shape as well as well-defined porous structures. This methodology demonstrates an advantageously lower temperature of the crystal phase transition compared to the reduction of TiO 2 by carbon or hydrogen. In this study, the effect of calcination conditions on various features of the products has been explored by adopting three different atmospheric conditions and varying the calcination temperature. The detailed crystallographic and elemental analyses disclose the distinguished difference in the phase transition behavior with respect to the calcination atmosphere. The correlation between the crystallization and nitridation behaviors, porous properties, and electric conductivities in the final products is discussed.

AB - A preceramic polymer route from Ti-based inorganic-organic hybrid networks provides electroconductive N-doped reduced titanium oxides (Ti n O 2n-1 ) and titanium oxynitrides (TiO x N y ) with a monolithic shape as well as well-defined porous structures. This methodology demonstrates an advantageously lower temperature of the crystal phase transition compared to the reduction of TiO 2 by carbon or hydrogen. In this study, the effect of calcination conditions on various features of the products has been explored by adopting three different atmospheric conditions and varying the calcination temperature. The detailed crystallographic and elemental analyses disclose the distinguished difference in the phase transition behavior with respect to the calcination atmosphere. The correlation between the crystallization and nitridation behaviors, porous properties, and electric conductivities in the final products is discussed.

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U2 - 10.1021/ic502972v

DO - 10.1021/ic502972v

M3 - RGC 21 - Publication in refereed journal

SN - 0020-1669

VL - 54

SP - 2802

EP - 2808

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 6

ER -

Effect of calcination conditions on porous reduced titanium oxides and oxynitrides via a preceramic polymer route

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