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2022 Fiscal Year Annual Research Report

Fabrication of photocatalyst composites of C3N4 with steel slag for carbon negative

Research Project

Project/Area Number 22F22083
Allocation TypeSingle-year Grants
Research InstitutionKyushu University

Principal Investigator

笹木 圭子  九州大学, 工学研究院, 教授 (30311525)

Co-Investigator(Kenkyū-buntansha) SRIKHAOW ASSADAWOOT  九州大学, 工学(系)研究科(研究院), 外国人特別研究員
Project Period (FY) 2022-04-22 – 2024-03-31
KeywordsSteel slag / graphitic carbon nitride / sugar conversion / lactic acid production / photobiorefinery / steel slag utilization
Outline of Annual Research Achievements

The oxygen-doped g-C3N4/artificial converter slag composites (OCN/artCS) were successfully prepared and further used as reusable and high-performance photocatalysts for transformation of monosaccharides to lactic acid under the simulated sunlight irradiation. Owing to the presence of Ca2Fe2O5 in the artCS, the artCS is able to serve as a photocatalyst support for OCN to grow on its surface and then form the OCN/Ca2Fe2O5-contiaing artCS heterojunction. The experimental results demonstrated that the OCN/artCS composites exhibited greater photocatalytic performance for selective production of lactic acid from glucose than the pure OCN. About 99% glucose conversion and 90% lactic acid production were achieved using the OCN/5%artCS composite to activate the reaction under the simulated solar light irradiation for 60 min at 50 °C. The results from PL, EIS and ERDT patterns suggested that the separation and transportation of photogenerated charge carriers were greatly improved after formation of the heterojunction between OCN and Ca2Fe2O5, which is an effective component in the artCS. Moreover, the presence of metallic oxide in the artCS can possibly increase the pH and shifted the isomerization equilibrium to accelerate the fructose production, leading to the high selective production of lactic acid. The OCN/5%artCS exhibited excellent stability towards photocatalytic production of lactic acid and can be reused for tenth cycles without significant loss of its photocatalytic activity. This work was submitted to the Chemical Engineering Journal and is currently under review.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

The research has been carried out in accordance with the plan of the application, the results have been obtained, and the thesis is now under review. The next research topics are also becoming clearer and clearer.

Strategy for Future Research Activity

The performance of the steel converter slag-containing Ca2Fe2O5/alkaline metal modified graphitic carbon nitride composites (CS/AMCN) for photocatalytic transformation of glucose and other sugars to lactic acid (or other value-added chemicals) under the simulated sunlight irradiation will be conducted. Basically, the high basicity of the catalyst could increase the pH and possibly shift the isomerization equilibrium from glucose to fructose. Thus, the modification of graphitic carbon nitride with alkaline metal can enhance the fructose production, leading to the high selective production of lactic acid form the photocatalytic sugar conversion. Moreover, the synergistic effect of AMCN and basicity of metallic oxide in the artCS may greatly enhance the formation of fructose from the glucose isomerization. Combination with the improved photogenerated charge separation and transportation in the CS/AMCM heterojunction. The as-prepared CS/AMCN composites will deliver high photocatalytic performance in lactic acid production from glucose with high selectivity. The research plans can be divided into three parts 1) Enhancing the basicity and photocatalytic activity of CS/AMCS by modification with Mg, Ca or Sr. 2) Improving the photogenerated charge transportation and separation by construction of the heterojunction between the steel converter slag-bearing Ca2Fe2O5/alkaline-earth metal modified g-C3N4. 3) Photocatalytic conversion of glucose or other sugars to lactic acid under the simulated sunlight irradiation using CS/AMCN composites will be investigated.

  • Research Products

    (7 results)

All 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] Mahidol University(タイ)

    • Country Name
      THAILAND
    • Counterpart Institution
      Mahidol University
  • [Journal Article] Simultaneous Photocatalytic Sugar Conversion and Hydrogen Production Using Pd Nanoparticles Decorated on Iron-Doped Hydroxyapatite2023

    • Author(s)
      Chuaicham Chitiphon、Noguchi Yuto、Shenoy Sulakshana、Shu Kaiqian、Trakulmututa Jirawat、Srikhaow Assadawoot、Sekar Karthikeyan、Sasaki Keiko
    • Journal Title

      Catalysts

      Volume: 13 Pages: 675~675

    • DOI

      10.3390/catal13040675

    • Peer Reviewed / Open Access
  • [Journal Article] Recent Clay-Based Photocatalysts for Wastewater Treatment2023

    • Author(s)
      Chuaicham Chitiphon、Trakulmututa Jirawat、Shu Kaiqian、Shenoy Sulakshana、Srikhaow Assadawoot、Zhang Li、Mohan Sathya、Sekar Karthikeyan、Sasaki Keiko
    • Journal Title

      Separations

      Volume: 10 Pages: 77~77

    • DOI

      10.3390/separations10020077

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Bio-reduced Ag nanoparticle decorated on ZnO for enhancement of photocatalytic reduction of hexavalent chromium and photocatalytic degradation of rhodamine B2023

    • Author(s)
      Chuaicham Chitiphon、Rizki Intan Nurul、Sekar Karthikeyan、Shenoy Sulakshana、Srikhaow Assadawoot、Trakulmututa Jirawat、Sasaki Keiko
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 939 Pages: 168797~168797

    • DOI

      10.1016/j.jallcom.2023.168797

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Fabrication of Reduced Ag Nanoparticle Using Crude Extract of Cinnamon Decorated on ZnO as a Photocatalyst for Hexavalent Chromium Reduction2023

    • Author(s)
      Rizki Intan Nurul、Inoue Takumi、Chuaicham Chitiphon、Shenoy Sulakshana、Srikhaow Assadawoot、Sekar Karthikeyan、Sasaki Keiko
    • Journal Title

      Catalysts

      Volume: 13 Pages: 265~265

    • DOI

      10.3390/catal13020265

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of transformation temperature toward optical properties of derived CuO/ZnO composite from Cu/Zn hydroxide nitrate for photocatalytic ciprofloxacin degradation2022

    • Author(s)
      Trakulmututa Jirawat、Chuaicham Chitiphon、Shenoy Sulakshana、Srikhaow Assadawoot、Sasaki Keiko、Smith Siwaporn Meejoo
    • Journal Title

      Optical Materials

      Volume: 133 Pages: 112941~112941

    • DOI

      10.1016/j.optmat.2022.112941

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Oxygen-doped graphitic carbon nitride/artificial steel converter slag composite as the low-cost catalyst for solar light driven photocatalytic conversion of sugar2023

    • Author(s)
      Assadawoot Srikhoaw, Chitiphon Chuaicham, Keiko Sasaki,
    • Organizer
      ACS 2023 spring.
    • Int'l Joint Research

URL: 

Published: 2023-12-25  

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