Graduating School 【 display / non-display 】

Graduating School 【 display / non-display 】

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  1997.03

  Iwate University   Faculty of Engineering   Other

Graduate School 【 display / non-display 】

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 】

Campus Career 【 display / non-display 】

• 2016.09

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  Now

  IWATE University   Faculty of Science and Engineering   Department of Chemistry and Biological Science   Studies in Chemistry   Associate Professor   [Duty]

• 2016.09

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  Now

  IWATE University   Center for Hiraizumi Studies   Associate Professor   [Concurrently]

• 2012.05

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  2016.08

  IWATE University   Center for Hiraizumi Studies   Assistant Professor   [Concurrently]

• 2007.04

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  2016.08

  IWATE University   Abolition organization   Frontier Materials and Function Engineering   Assistant Professor   [Duty]

• 2004.04

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  2007.03

  IWATE University   Graduate School of Engineering   Frontier Materials and Function Engineering   Nano Materials Engineering   Research Assistant   [Duty]

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Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

• Nanotechnology/Materials / Inorganic compounds and inorganic materials chemistry

Course Subject 【 display / non-display 】

Course Subject 【 display / non-display 】

• 2004

  Undergraduate Research

• 2004

  Seminar in Chemical Engineering

• 2004

  Chemical Engineering Laboratory Ⅰ

• 2004

  Chemical Engineering Exercise Ⅰ

• 2004

  Chemistry Laboratory

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Research Career 【 display / non-display 】

Research Career 【 display / non-display 】

• Synthesis and Characterization of Biomolecule/Inorganic Layered Material Nanohybrid

  Periods of research：

  1999.04

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  Now

  Keywords : Layered Materials

  Style of Research： Collaboration in Japan

  Research Program： (not selected)  

• Synthesis and Characterization of Organic Compound/Inorganic Layered Material Nanohybrid

  Periods of research：

  1999.04

  -

  Now

  Keywords : Layered Double Hydroxide

  Style of Research： Collaboration in Japan

  Research Program： (not selected)  

Published Papers 【 display / non-display 】

Published Papers 【 display / non-display 】

• 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.

  DOI

• 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.

  DOI

• Structural, optical, and photocatalytic properties of rare-earth free double-perovskite oxides Ba₂Bi³⁺(Bi⁵⁺_1-2xSb⁵⁺_2x)O₆

  Dayal Chandra Ro, Michiaki Matsukawa, Minami Arakida, Hanako Sakou, Kazuto Hata, Kazume Nishidate, Sumio Aisawa, Hajime Yamamoto, Akiyuki Matsushita

  Solid State Communications ( Elsevier Ltd. )  373–374   2023.09  [Refereed]

  Academic Journal  Multiple authorship

  DOI

• Superhydrophobic coatings by electrodeposition on Mg–Li alloys: Attempt of armor-like Ni patterns to improve the robustness

  Hongyuan He, Jiebin Du, Jing Sang, Hidetoshi Hirahara, Sumio Aisawa, Dexin Chen

  Materials Chemistry and Physics   304 ( 127902 )   2023.05  [Refereed]

  Bulletin of University, Institute, etc.  Multiple authorship

  Due to the fragility of the layered structure, the mechanical properties of superhydrophobic surfaces, particularly wear resistance, are still too poor, limiting the industrial application of protecting magnesium-lithium (LZ91) alloys from corrosion. As a result, we’re testing screen-printed masks to electroplate armor-like Ni columns. Then, using electrodeposition, compact micro/nanometer-sized papillary structured superhydrophobic surfaces are created on Mg–Li alloys, which exhibit good low viscosity, self-cleaning, chemical stability, and excellent corrosion resistance with a 2 order of magnitude decrease in corrosion current density in both corrosive media. Surprisingly, increasing the deposition time causes the dissolution of Cu anode electrodes and the subsequent formation of Cu compounds on the superhydrophobic coating, resulting in the formation of dense needle-like structures on these papillae. Even after the superhydrophobic structures are worn away, the armor-like Ni col- umns reduce the contact angle’s tendency to decrease. This proposed deposition method provides a simple and fast process for protecting the surface of Mg–Li alloys, and the concept of armored Ni patterns may pave the way for future advances in the robustness and application of superhydrophobic coatings.

• Synthesis of Carbon Nanotube using Layered Double Hydroxide with Various Metal Compositions as Catalyst Precursors

  Chika Chida, Sumio Aisawa, Riku Kumagai, Jing Sang,Hidetoshi Hirahara,Hiroe Kimura, Don N. Futaba

  Chemistry Letters ( The Chemical Society of Japan )  52   412 - 415   2023.04  [Refereed]

  International Conference Proceedings  Multiple authorship

  DOI

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Review Papers 【 display / non-display 】

Review Papers 【 display / non-display 】

• 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  

• Production of Eco-nanomaterials Using Anionic Clay (Layered Double Hydroxide)

    49 ( 9 ) 693 - 703   2012.09

  Academic Journal  

Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• 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

  　

  　

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Academic Awards Received 【 display / non-display 】

Academic Awards Received 【 display / non-display 】

• 2021.10.03

• 2021.09.17

• 2013.11.08

• 2013.10.25

• 2013.04.18

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Association Memberships 【 display / non-display 】

Association Memberships 【 display / non-display 】

• 2002.01

  　

  　

   

  The Society of Inorganic Materials