Faculty Profiles - SAKIDA Shinichi

MISC - SAKIDA Shinichi

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Effect of bond valence sum constraints on the structural modeling of lead borate glass

NAGAO Masaaki, SAKIDA Shinichi, BENINO Yasuhiko, NANBA Tokuro, MUKUNOKI Atsushi, CHIBA Tamotsu, KIKUCHI Takahiro, SAKURAGI Tomofumi

日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM) 2019 2019

圧縮変形させたリン酸塩ガラスの異方性評価

小林彩華, 崎田真一, 紅野安彦, 難波徳郎

セラミックス基礎科学討論会講演要旨集 56th 2018

リン酸カルシウム系ガラスにおける異方性誘起過程の分子動力学構造モデル化

松井郁也, 崎田真一, 紅野安彦, 難波徳郎

セラミックス基礎科学討論会講演要旨集 56th 2018

BPIガラス固化体の分子動力学シミュレーションを用いた構造解析

菊川康一, 崎田真一, 紅野安彦, 難波徳郎, 椋木敦, 千葉保, 菊池孝浩, 桜木智

セラミックス基礎科学討論会講演要旨集 55th 2017

ガラスガラスの構造と結合状態

難波徳郎, 崎田真一, 紅野安彦

Journal of the Society of Inorganic Materials, Japan 24 ( 391 ) 2017

リン酸塩ガラスの圧縮変形による力学的異方性

小林彩華, 崎田真一, 紅野安彦, 難波徳郎

日本セラミックス協会年会講演予稿集(CD-ROM) 2017 2017

SnO-ZnO-P₂O₅系ガラスの構造と発光特性

塩田将大, 崎田真一, 紅野安彦, 難波徳郎

セラミックス基礎科学討論会講演要旨集 55th 2017

土壌中のセシウムの揮発挙動に対する支配因子の探索

永井福人, 崎田真一, 紅野安彦, 難波徳郎

セラミックス基礎科学討論会講演要旨集 55th 2017

Investigation of electronic structure of amorphous niobium oxide based on the density functional theory calculation of crystalline niobium pentoxide polymorphs Reviewed

Chinatsu Oki, Go Sajiki, Shinichi Sakida, Yasuhiko Benino, Tokuro Nanba

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 124 ( 12 ) 1221 - 1225 2016.12

Language：English Publisher：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI

Electronic structure of amorphous niobium oxide prepared by a sputtering method was investigated based on optical absorption and photoelectron spectroscopies. In the valence band photoelectron spectra, broad peaks without any characteristic components were observed. Then, theoretical calculations based on a density functional theory were performed to interpret the experimental spectra by using three Nb2O5 polymorphs. Among the polymorphs, M-phase with tetragonal structure showed better reproducibility than the other B- and R-phases with monoclinic structure. It was finally concluded that the amorphous niobium oxide had a similar electronic structure to M-Nb2O5, and it was supposed that the broad feature in the photoelectron spectra was due to the broad distribution of Nb-O bonds in NbO6 polyhedra, which was characteristic in M-Nb2O5. (C) 2016 The Ceramic Society of Japan. All rights reserved.

DOI： 10.2109/jcersj2.16180

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X線異常散乱によるテルライトガラスの構造解析

元下知季, 崎田真一, 紅野安彦, 難波徳郎, 小原真司

日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM) 29th 2016

Ag⁺-Na⁺電界イオン交換によりテルライトガラス中に生成する銀微粒子の状態

宮本裕太, 崎田真一, 紅野安彦, 難波徳郎

セラミックス基礎科学討論会講演要旨集 54th 2016

還元溶融時における脱リンスラグの構成成分の分配挙動

木多英斗, 崎田真一, 紅野安彦, 難波徳郎

日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM) 29th 2016

SnOドープZnO-P₂O₅系ガラスの発光特性

塩田将大, 崎田真一, 紅野安彦, 難波徳郎

日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM) 29th 2016

都市ごみ溶融スラグの構成元素の溶出挙動

網田吉伸, 崎田真一, 紅野安彦, 難波徳郎

セラミックス基礎科学討論会講演要旨集 54th 2016

Development of Recycling Process Utilizing Glass Properties

22 ( 379 ) 414 - 419 2015.11

Distribution behavior of inorganic constituents in chemical recycling processes of a municipal waste slag Reviewed

Kohei Omura, Shinichi Sakida, Yasuhiko Benino, Tokuro Nanba

Journal of Asian Ceramic Societies 1 ( 1 ) 108 - 113 2013

Language：English Publisher：Elsevier B.V.

A chemical recycling process of inorganic wastes has been developed, where after vitrifying wastes, the glasses were heat-treated and soaked in an acid, obtaining colorless and transparent SiO2-abundant glasses. In the present study, distribution behavior of the constituents such as Si, P, Ti, Al and so on present in a municipal waste slag was examined. According to compositional analyses, the recovered solids after acid treatment consisted of SiO2, P2O5 and TiO2, suggesting the preferential distribution of P and Ti atoms into SiO2-rich phase during phase separation. In high resolution microscopic analyses, however, it was observed that P and Ti atoms were distributed separately from Si atoms, and they were present in the different particles insoluble in the acid. It was finally concluded that the insoluble solids were produced by a dissolution-reprecipitation process, that is, once all the constituents of the vitrified slag were dissolved in the acid, P2O5 and TiO2 coprecipitated as particles, and TiO2 was indispensable for the precipitation of P2O5. SiO2 also precipitated as particles separately from P- and Ti-containing particles. © 2013 The Ceramic Society of Japan and the Korean Ceramic Society.

DOI： 10.1016/j.jascer.2013.03.003

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下水処理汚泥からのリンの回収プロセスの開発

宮本亮, 崎田真一, 紅野安彦, 難波徳郎

セラミックス基礎科学討論会講演要旨集 51st 2013

Effect of additives on the distribution of phosphorus associated with phase separation of borosilicate glasses Reviewed

Yasuhiko Benino, Yuki Ohtsuki, Shinichi Sakida, Tokuro Nanba

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 120 ( 1407 ) 490 - 493 2012.11

Language：English Publisher：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI

Sodium borosilicate glasses containing phosphorus were prepared, and the effect of Al2O3 and TiO2 addition on the distribution behavior of phosphorus atoms associated with the phase separation was investigated. After heat treatment, a phase separation by the spinodal decomposition was commonly confirmed by SEM observation. In the additive-free sample, phosphorus was preferentially distributed into B2O3-rich phase after the phase separation, and after adding Al2O3 or TiO2, the amount of phosphorus distributed into SiO2-rich phase increased. It was also suggested that TiO2 had a stronger influence on the phosphorus distribution into SiO2-rich phase than Al2O3. P-31 MAS-NMR revealed that most of phosphorus atoms in the additive-free glass were present in PO4 units consisting of two terminal oxide ions, and the terminal oxide ions decreased and increased after the additions of Al2O3 and TiO2, respectively. It was suggested that this structural change brought about a change in the distribution of phosphorus. (C) 2012 The Ceramic Society of Japan. All rights reserved.

DOI： 10.2109/jcersj2.120.490

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Effect of Nb2O5 addition to SnO-P2O5 glass Reviewed

Satoshi Fukui, Shinichi Sakida, Yasuhiko Benino, Tokuro Nanba

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 120 ( 1407 ) 530 - 533 2012.11

Language：English Publisher：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI

SnO-P2O5 glasses have high refractive index and low glass transition temperature but have poor water durability. To improve water durability, NbO2.5 was added to SnO-P2O5 glasses, preparing SnO-NbO2.5-P2O5 glass. It was found that addition of only 4 mol % NbO2.5 was enough to achieve significant improvement of water durability, and at the same time, no degradation in thermal and optical properties was observed. (C)2012 The Ceramic Society of Japan. All rights reserved.

DOI： 10.2109/jcersj2.120.530

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Surface crystallization of stoichiometric glass with Bi2ZnB2O7 crystal using ultrasonic surface treatment followed by heat treatment Reviewed

Keita Kanenishi, Shinichi Sakida, Yasuhiko Benino, Tokuro Nanba

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 120 ( 1407 ) 509 - 512 2012.11

Language：English Publisher：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI

Surface crystallized glass-ceramics with nonlinear optical Bi2ZnB2O7 (BZB) crystals were prepared by ultrasonic surface treatment (UST) followed by crystallization heat treatment for stoichiometric glass with a composition of 33.3Bi(2)O(3)-33.3ZnO-33.3B(2)O(3). According to the surface XRD measurements and microscopic observations, UST technique was found to be quite effective for lower temperature precipitation of BZB, indicating the ability of crystallization control of the target phase, such as phase selectivity, small size of precipitates, high orientation and their morphology. After the optimization of the process condition parameters for improving transparency and suppressing deformation of the sample, the effective optical nonlinearity of the transparent surface crystallized glass-ceramics was estimated as 0.7 pm/V. (C)2012 The Ceramic Society of Japan. All sights reserved.

DOI： 10.2109/jcersj2.120.509

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