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Affiliation |
IWATE University Faculty of Science and Engineering Department of Chemistry and Biological Science Studies in Chemistry |
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Position |
Associate Professor |
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Laboratory Address |
〒0208551 4-3-5 Ueda, Morioka |
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Laboratory Phone number |
+81-19-621-6332 |
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Laboratory Fax number |
+81-19-621-6333 |
AISAWA Sumio
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Graduating School 【 display / non-display 】
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-1997.03
Iwate University Faculty of Engineering Other
Graduate School 【 display / non-display 】
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-1999.03
Iwate University Graduate School, Division of Engineering Master's Course Completed
Campus Career 【 display / non-display 】
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2016.09-Now
IWATE University Faculty of Science and Engineering Department of Chemistry and Biological Science Studies in Chemistry Associate Professor [Duty]
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2016.09-Now
IWATE University Center for Hiraizumi Studies Associate Professor [Concurrently]
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2012.05-2016.08
IWATE University Center for Hiraizumi Studies Assistant Professor [Concurrently]
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2007.04-2016.08
IWATE University Abolition organization Frontier Materials and Function Engineering Assistant Professor [Duty]
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2004.04-2007.03
IWATE University Graduate School of Engineering Frontier Materials and Function Engineering Nano Materials Engineering Research Assistant [Duty]
Research Areas 【 display / non-display 】
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Nanotechnology/Materials / Inorganic compounds and inorganic materials chemistry
Course Subject 【 display / non-display 】
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2004
Undergraduate Research
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2004
Seminar in Chemical Engineering
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2004
Chemical Engineering Laboratory Ⅰ
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2004
Chemical Engineering Exercise Ⅰ
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2004
Chemistry Laboratory
Research Career 【 display / non-display 】
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Synthesis and Characterization of Biomolecule/Inorganic Layered Material Nanohybrid
Periods of research：
1999.04-NowKeywords : Layered Materials
Style of Research： Collaboration in Japan
Research Program： (not selected)
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Synthesis and Characterization of Organic Compound/Inorganic Layered Material Nanohybrid
Periods of research：
1999.04-NowKeywords : Layered Double Hydroxide
Style of Research： Collaboration in Japan
Research Program： (not selected)
Published Papers 【 display / non-display 】
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Enhanced photocatalytic activities under visible light of double-perovskite oxide semiconductor Ba2Tb(Bi, Sb)O6 with mixed-valence
Dayal Chandra Roy, Michiaki Matsukawa, Takanori Yonai, Minami Arakida, Haruka Taniguchi, Kazume Nishidate, Sumio Aisawa, Akiyuki Matsushita, Lin Shiqi
Journal of Materials Science: Materials in Electronics 34 ( 281 ) 2023.01 [Refereed]
Academic Journal Multiple authorship
In this study, we showed the effect of Sb substitution on lattice structures, physical properties and photocatalytic activities for the double-perovskite oxides with mixed valence. High quality powders of Ba2Tb(Bi1−xSbx)O6 (0.1≤x≤1.0) were successfully synthesized using a citrate pyrolysis approach. Through partial substitution of Sb at Bi site of this compound, it was possible to design oxidative photocatalysts at lower x, and reduction-type ones at higher x. These findings are discussed on the basis of the conduction and valence band edge potentials of a series of Ba2(Tb, Pr)(Bi, Sb)O6 photocatalysts. The Sb substituted sample with the x = 0.6 composition predicted from the machine learning procedure exhibited the highest performance of methylene blue degradation, which is comparable to typical degradation rates for good perovskite catalysts.
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Preparation of hollow nanosphere of 5-fluorouracil/layered double hydroxide and its cellular cytotoxicity
Sumio Aisawa, Jing Sang , Daisuke Suga , Hidetoshi Hirahara , Eiichi Narita
Applied Clay Science ( Elsevier B.V. ) ( 226 ) 2022.09 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
We have first prepared the layered double hydroxide (LDH)/carbon nanosphere (CNS) composite by mixing the LDH gel containing methoxide interlayer anion with the CNS template (particle size of 300–700 nm) suspension in methanol at room temperature under ultrasonication. The SEM observation indicates that the CNS core was uniformly covered with the LDH thin film made up by fine plate-like particles to form the composite. Then, the intercalation of anticancer drug, 5-fluorouracil (5-FU), into the LDH interlayer was carried out by the calcinationrehydration reaction and the solid products were analyzed using XRD, FT-IR, SEM, TEM etc. During the calcination process at 500 ◦C for 3 h, the CNS core was removed by combustion and the LDH shell became the hollow LDH oxide nanosphere. In the following rehydration process at 60 ◦C for 24 h, this oxide precursor was reconstructed the hollow LDH nanosphere having the surface of coral-like structure (spontaneously formed LDH particles) incorporating 5-FU anion in the interlayer. Finally, the anticancer drug efficacy in vitro of the products was estimated by using the WST-8 assays in HeLa cell lines. As the result, the hollow nanosphere of the 5-FU/ LDH performed an improvement of drug efficacy compared to the conventional plate-like particle of the 5-FU/LDH as the reference and the naked 5-FU itself at the same 5-FU concentration.
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Hisako Sato, Sumio Aisawa, Honoka Ida, Masaru Shimizu, Keisuke Watanabe, Jun Koshoubu, Jun Yoshida, and Izuru Kawamura
Chemistry Letters ( The Chemical Society of Japan ) 51 ( 2 ) 205 - 207 2021.12 [Refereed]
International Conference Proceedings Multiple authorship
A vibrational circular dichroism (VCD) system with a quantum-cascade laser was used to obtain a two-dimensional image of VCD signals on a pharmaceutical tablet. A KBr disc of a model dosage form was prepared using tartaric acid and phenylalanine as chiral multi-reagents and layered double hydroxides as excipients. VCD spectra were obtained in the range 1500-1700 cm-1 at a 1 mm i.d. spatial resolution. The results demonstrated the utility of the proposed system in quality control during drug manufacturing.
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A kinetic analysis of intercalation of organic sulfate anions into layered double hydroxide using quartz crystal microbalance with layered double hydroxide-immobilized electrode
Sumio AISAWA, Jing SANG, Yuya NITANAI, Hidetoshi HIRAHARA, Eiichi NARITA
Journal of the Ceramic Society of Japan ( 公益社団法人日本セラミックス協会 ) 129 ( 7 ) 470 - 477 2021.07 [Refereed]
Academic Journal Multiple authorship
To investigate a dynamic intercalation behavior of organic anions into layered double hydroxide (LDH) interlayer by ion-exchange, a quartz crystal microbalance (QCM) with the Mg–Al LDH thin film immobilized gold disc (LDH/QC) electrode has been used. A stable minute LDH film was prepared by using translucent aqueous sol of LDH containing OH− ions and magnesium acetate molecule in the interlayer and immobilized on the gold disc after pretreatment of the surface of the supporting silica electrode with hydrophobic agent. In the kinetic analysis, alkyl sulfates having n-alkyl chain (CnH2n+1, n = 5–12; abbreviated as CnS) were used as guest anions. As the results, the time-dependence on CnS intercalation by ion-exchange with guest OH− ions and magnesium acetate molecules was measured in the cases of CnS (n ≥ 7), and the data of C11S and C12S intercalation were successively analyzed using the rate equation based on the reversible pseud first-order reaction. Finally, the instrumental analyses of the LDH films before and after the intercalation of C12S revealed that the organic anions could be intercalated into the LDH interlayer of the LDH/QC electrode in each aqueous solutions.
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Interfacial Molecular Motion and Chemical Characteristics of Polymer Jointed to Metal by Chemical Bonding
Xueliang Deng, Jing Sang, Sumio Aisawa, Kastuhito Mori , Hidetoshi Hirahara
Journal of the Japan Society of Colour Material 96 ( 6 ) 149 - 157 2021.06 [Refereed]
Academic Journal Single Work
シリコンゴムとAlが接触方式による放熱材料の熱伝導性，接着剤による接合での熱伝導性，そして界面化学結合により創成したシリコンゴムとAl複合体の化学接合方式による熱伝導特性への影響を評価することによって，ヒートシンクと放熱材料，および放熱材料と熱源の界面の接触熱抵抗の影響を解明している。シリコンゴムとAl複合体の熱伝導特性におよぼすシリコンゴム架橋剤添加量とシリコンゴム厚さの影響について検討した。シリコンゴムとAlの接触方式による熱伝導性と接着剤による接合での熱伝導性，そして分子接合剤により界面化学結合させたシリコンゴムとAl複合体の化学接合方式によって熱伝導特性が異なることを解明し，化学結合を用いて接合したシリコンゴムとAl複合体放熱材料はシリコンゴムとヒートシンク(Al)材料の接触熱抵抗の減少に有効であることを明らかにした。
Review Papers 【 display / non-display 】
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Production of Eco-nanomaterials Using Anionic Clay (Layered Double Hydroxide)
49 ( 9 ) 693 - 703 2012.09
Academic Journal
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Fabrication of biomolecules and drugs nanocarrier from layered double hydroxides
Journal of the Society of Inorganic Materials, Japan 21 ( 370 ) 176 - 182 2014.05
Academic Journal
Presentations 【 display / non-display 】
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Synthesis and conformation study of phenylalanine and tartaric acid intercalated Zn-Al layered double hydroxide
Poster (General) H. Ida, S. Aisawa, H. Hirahara, J. Sang, H. Sato
2021.10 -
Synthesis and particle-size control of anti-cancer drug intercalated layered double hydroxide by coprecipitation method
Poster (General) N. Fujii, S. Aisawa, J. Sang, H. Hirahara
2021.10 -
Synthesis and characterization of layered double hydroxide from hydrothermal reaction of magnesium hydroxide
Poster (General)
2020.09 -
Application of Solid-State Vibrational Circular Dichroism for Layered Double Hydroxides: Intercalation Structure of Phenylalanine
Poster (General) SATO, Hisako; TAKIMOTO, Kazuyoshi; KAWAMURA, Izuru; AISAWA, Sumio
2020.03 -
Intercalation behavior of methotrexate into Mg-Al layered double hydroxide
Poster (General)
2018.09
Academic Awards Received 【 display / non-display 】
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2021.10.03
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2021.09.17
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2013.11.08
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2013.10.25
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2013.04.18
Association Memberships 【 display / non-display 】
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2002.01
The Society of Inorganic Materials