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

C3N4与钢渣碳负极光触媒复合材料的制备

• 批准号: 22KF0299
• 负责人: 笹木 圭子
• 金额: $ 1.47万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22KF0299/
• 关键词: Steel slag; graphitic carbon nitride; sugar conversion; lactic acid production; photobiorefinery; steel slag utilization

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.

成功制备了掺氧g-C3 N4/人造转炉渣复合材料（OCN/artCS），并将其作为可重复使用的高性能光催化剂，在模拟太阳光照射下催化单糖转化为乳酸。由于Ca_2Fe_2O_5的存在，artCS可以作为光催化剂载体，使OCN在其表面生长，形成含OCN/Ca_2Fe_2O_5的artCS异质结。 实验结果表明，OCN/artCS复合材料表现出更好的光催化性能，选择性地从葡萄糖生产乳酸比纯OCN。 在50 °C下模拟太阳光照射60 min，使用OCN/5%artCS复合物激活反应，实现了约99%的葡萄糖转化率和90%的乳酸产量。PL、EIS和ERDT谱图表明，OCN与Ca_2Fe_2O_5形成异质结后，光生载流子的分离和输运得到明显改善。此外，金属氧化物在artCS中的存在可能会增加pH并移动异构化平衡以加速果糖的生产，从而导致乳酸的高选择性生产。OCN/5%artCS对光催化生产乳酸表现出优异的稳定性，并且可以重复使用10次而没有显著的光催化活性损失。 这项工作已提交给化学工程杂志，目前正在审查中。

项目成果

Fabrication of Reduced Ag Nanoparticle Using Crude Extract of Cinnamon Decorated on ZnO as a Photocatalyst for Hexavalent Chromium Reduction

ZnO 修饰肉桂粗提物制备还原银纳米粒子作为六价铬还原光催化剂

• DOI: 10.3390/catal13020265
• 发表时间: 2023
• 期刊: Catalysts
• 影响因子: 3.9
• 作者: Rizki Intan Nurul;Inoue Takumi;Chuaicham Chitiphon;Shenoy Sulakshana;Srikhaow Assadawoot;Sekar Karthikeyan;Sasaki Keiko
• 通讯作者: Sasaki Keiko

Bio-reduced Ag nanoparticle decorated on ZnO for enhancement of photocatalytic reduction of hexavalent chromium and photocatalytic degradation of rhodamine B

ZnO上修饰的生物还原银纳米粒子增强六价铬的光催化还原和罗丹明B的光催化降解

• DOI: 10.1016/j.jallcom.2023.168797
• 发表时间: 2023
• 期刊: Journal of Alloys and Compounds
• 影响因子: 6.2
• 作者: Chuaicham Chitiphon;Rizki Intan Nurul;Sekar Karthikeyan;Shenoy Sulakshana;Srikhaow Assadawoot;Trakulmututa Jirawat;Sasaki Keiko
• 通讯作者: Sasaki Keiko

Simultaneous Photocatalytic Sugar Conversion and Hydrogen Production Using Pd Nanoparticles Decorated on Iron-Doped Hydroxyapatite

• DOI: 10.3390/catal13040675
• 发表时间: 2023-03
• 期刊: Catalysts
• 影响因子: 3.9
• 作者: Chitiphon Chuaicham;Yuto Noguchi;Sulakshana Shenoy;Kaiqian Shu;Jirawat Trakulmututa;Assadawoot Srikhaow

Recent Clay-Based Photocatalysts for Wastewater Treatment

最近用于废水处理的粘土基光催化剂

• DOI: 10.3390/separations10020077
• 发表时间: 2023
• 期刊: Separations
• 影响因子: 2.6
• 作者: Chuaicham Chitiphon;Trakulmututa Jirawat;Shu Kaiqian;Shenoy Sulakshana;Srikhaow Assadawoot;Zhang Li;Mohan Sathya;Sekar Karthikeyan;Sasaki Keiko
• 通讯作者: Sasaki Keiko

Mahidol University(タイ)

玛希隆大学（泰国）