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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 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)
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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)
Published Papers 【 display / non-display 】
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Nanoscale chirality generated in zinc(II) orthophosphate clusters: evidence by vibrational circular dichroism
Sumio Aisawa, Nami Horiguchi, Chika Chida, Jing Sang, Hidetoshi Hirahara, Akihiko Yamagishi and Hisako Sato
Nanoscale ( The Royal Society of Chemistry ) 16 20589 - 20595 2024.10 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
Layered zinc(II) hydroxides (LZH) intercalating the deprotonated forms of R-(−) or S-(+)-1,1’-binaphthyl-2,2’-diyl hydrogenphosphate (denoted as R- or S-BNDHPH, respectively) were prepared from Zn(NO3)2 atpH 5 and 60 °C by the mixing method. The obtained hybrid compounds (denoted as R- or S-BNDHP−/LZH, respectively) were heated from room temperature up to 800 °C under nitrogen atmosphere. According to the thermal gravimetric/differential thermal analysis measurements, hydroxyl groups were dehydrated at 270–400 °C, followed by the decomposition of organic components at 420–600 °C. X-ray diffraction patterns and scanning electron microscopy images indicated that the final products were a mixture of α-Zn3(PO4)2, ZnO crystals and non-crystalline zinc(II) orthophosphates. Vibrational circular dichroism (VCD) spectra were recorded before and after calcination. Before calcination, R- or S-BNDHP−/LZH exhibited VCD peaks assigned to intercalated R- or S-BNDHP−. The calcined products exhibited several VCD peaks in the range of 900–1200 cm−1, maintaining the mirror-image relationship between R-BNDHP−/LZH and S-BNDHP−/LZH used as starting materials. The observed peaks were assigned to the PvO (symmetric), –POO−, and PvO (asymmetric) stretching vibrations of the PO43− groups. According to theoretical simulations, the observed VCD activity can be rationalised in terms of vibrational coupling between two PO43− groups in a generated chiral zinc(II) orthophosphate cluster.
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Hisako Sato, Sumio Aisawa, Akihiko Yamagishi
Clay Science ( The Clay Science Society of Japan ) 28 ( 1-2 ) 1 - 9 2024.07 [Refereed]
International Conference Proceedings Multiple authorship
This review describes the application of solid-state vibrational circular dichroism spectroscopy (denoted as SD-VCD) to the intercalation compounds of layered double hydroxides (LDH’s). The hybrid compounds of chiral molecules and LDH are chosen as a main target. SD-VCD is employed to probe the conformation of an intercalated amino acid. Intermolecular interactions are studied from the VCD spectra on LDH samples co-adsorbing an amino acid and tartaric acid. Notably the enhancement of VCD signals occurs to provide evidence for the stereoselective interactions between the intercalated species. As a final goal, the analysis of a model drug tablet containing LDH is described by means of the microscopic scanning VCD method.
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Catalytic mechanism of Co-containing layered double hydroxide (Co-LDH) as a precursor in carbon nanotube (CNT) synthesis
Chika Chida, Sumio Aisawa, Kei Yokoyama, Riku Kumagai, Jing Sang, Hidetoshi Hirahara, Hiroe Kimura, Don N Futaba
Chemistry Letters ( Oxford University Press ) 53 2024.03 [Refereed]
International Conference Proceedings Multiple authorship
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COPRECIPITATION OF BORON WITH NICKEL(II) HYDROXIDES IN WASTEWATER
Sumio Aisawa, Masatoshi Takahashi, Tooru Abe, Chika Chida, Hidetoshi Hirahara, Eiichi Narita
Clay Science ( 日本粘土学会 ) 27 ( 3-4 ) 33 - 39 2023.12 [Refereed]
International Conference Proceedings Multiple authorship
In this work, the removal of boron (B) in wastewater was investigated by the coprecipitation method using bivalent metal ion as a precipitant. From the preliminary experiments conducted under the fundamental conditions, the removal percentage (coprecipitation degree) of B was found to be quite different depend on the kind of metal ions used, and it became the highest as 95.9% when Ni2+ ion was adopted. Also, the residual B concentration was under the limited value (10 mg/L) of the regulation for wastewater. Then, the optimum conditions in this case were studied in detail and the result was as follows; Initial B concentration=300 mg/L, Ni2+/B molar ratio=12/1, temperature 25°C and pH 9–10. Comparing with the Ni–Al layered double hydroxide prepared under the same condition, this nickel hydroxide precipitate indicated much higher removal ability for B. The precipitate obtained at the optimum condition was mainly the layered nickel hydroxide coordinating borate ion in the interlayer space, which basal spacing being 0.80 nm. Depending on the conditions, several other precipitates such as nickel hydroxide hydrate (3Ni(OH)2·2H2O) and theophrastite (Ni(OH)2) formed highly accompanying borate ion on their surface or inside. In conclusion, new simple method for the B removal by the coprecipitation using Ni2+ ion at higher pH was proposed in this study.
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Synthesis of phenylalanine and tartaric acid intercalated layered double hydroxide (LDH): Investigation of two kinds of chiral molecules interaction in interlayer space of LDH using solid-state vibrational circular dichroism
Sumio Aisawa, Chika Chida, Honoka Ida, Jing Sang, Hidetoshi Hirahara, Hisako Sato
Applied Clay Science ( Elsevier B.V. ) ( 244 ) 2023.11 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
Recently, the applicability of solid-state vibrational circular dichroism (SD-VCD) for the evaluation of organoclay nanohybrids has attracted much attention. Herein, the intercalation of two kinds of chiral molecules, phenylalanine (Phe) and tartaric acid (Tart), into Zn-Al layered double hydroxide (LDH) was carried out by a standard coprecipitation method. The Phe/Tart/LDH was characterized by XRD, FT-IR, TG-DTA, and SD-VCD. The chemical composition and interlayer distance expansion of Phe/Tart/LDH indicated that Phe and Tart were intercalated into the LDH. The VCD and theoretical calculation results showed that Phe and Tart coexisted in the same interlayer space of LDH with the formation of electrostatic interaction and hydrogen bonding between Phe-Tart, LDH-Phe, and LDH-Tart. The results demonstrated the utility of the SD-VCD method for determining the detailed conformation of chiral molecules in the LDH interlayer space.
Review Papers 【 display / non-display 】
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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
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Production of Eco-nanomaterials Using Anionic Clay (Layered Double Hydroxide)
49 ( 9 ) 693 - 703 2012.09
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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2024.09.04
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2023.11.03
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2023.09.27
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2023.09.10
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2021.10.03
Association Memberships 【 display / non-display 】
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2002.01
The Society of Inorganic Materials