太陽光を利用した水中細菌の新規光触媒処理システムの開発

开发利用阳光对水下细菌进行新型光催化处理系统

• 批准号: 18J20620
• 负责人: LIU NA
• 金额: $ 1.41万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-04-25 至 2021-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18J20620/
• 关键词: Photocatalyst; Glue immobilization; Water disinfection; Various bacteria; Disinfection mechanism; High stability; Visible-light-driven; Solar-light-driven; Gram-positive; Gram-negative

During the third fiscal year of my research, in order to test the practical application potential of the newly developed glue-immobilized P/Ag/Ag2O/Ag3PO4/TiO2 (PAgT) photocatalyst system for continuous-cycle sterilization, the study was carried out through the following three key points. (1) Evaluate the photocatalytic inactivation ability of the glue-immobilized PAgT photocatalyst for different kinds of pathogenic bacteria. (2) Investigate the stability and recyclability of the developed glue-immobilized photocatalyst reactor for the continuous-cycle water sterilization. (3) Clarify the disinfection mechanism involved during the immobilized PAgT photocatalyst system for the efficient water sterilization.The result showed that the newly developed glue-immobilized PAgT photocatalyst system could effectively inactivate various pathogenic bacteria under light irradiation with excellent stability and reusability. The enhanced antibacterial performance of immobilized PAgT system was due to a synergistic effect of disinfection mechanism combining the improved photocatalysis on the introduction of heterojunction structure, and the mechanical stress driven from the composite sharp edge morphology. The present results reveal the possibility of applying the developed silicone glue-immobilized PAgT system for real water sterilization under solar light to further improve the public health level around the world, especially in the rural areas or at the time of disaster.

在我研究的第三个财年，为了测试新开发的胶固定P/Ag/Ag2O/Ag3PO4/TiO2（PAgT）光催化剂系统用于连续循环灭菌的实际应用潜力，研究通过以下三个要点。 (1)评价胶固定PAgT光催化剂对不同种类病原菌的光催化灭活能力。 (2)研究所开发的用于连续循环水灭菌的胶固定光催化剂反应器的稳定性和可回收性。 (3)阐明了固定化PAgT光触媒系统在水体高效杀菌过程中涉及的消毒机理。结果表明，新开发的胶固定化PAgT光触媒系统在光照射下能有效灭活多种病原菌，具有良好的稳定性和可重复使用性。固定化PAgT系统抗菌性能的增强是由于引入异质结结构时改进的光催化作用与复合材料锋利边缘形态驱动的机械应力相结合的消毒机制的协同作用。目前的结果揭示了应用所开发的硅酮胶固定PAgT系统在太阳光下进行真正的水灭菌的可能性，以进一步提高世界各地的公共卫生水平，特别是在农村地区或发生灾害时。

项目成果

Superior disinfection effect of Escherichia coli by hydrothermal synthesized TiO2-based composite photocatalyst under LED irradiation: Influence of environmental factors and disinfection mechanism

• DOI: 10.1016/j.envpol.2019.01.082
• 发表时间: 2019-04-01
• 期刊: ENVIRONMENTAL POLLUTION
• 影响因子: 8.9
• 作者: Liu, Na;Zhu, Qi;Yang, Yingnan
• 通讯作者: Yang, Yingnan

Effective Elimination of Seawater Pollutants Using Surfactant Modified Using TiO2-based Composite Under Solar Light Illumination

太阳光照射下TiO2基复合材料改性表面活性剂有效消除海水污染物

• 发表时间: 2020
• 作者: Sharma;A.;Liu;N.;Ma;Q. S.;Yano;M.;Yang;Y. N.
• 通讯作者: Y. N.

Effective Wastewater Treatment with the Developed Liner Fresnel Photocatalytic reactor (LFP) Under Real Solar Light

使用开发的线性菲涅尔光催化反应器（LFP）在真实太阳光下有效处理废水

• 发表时间: 2019
• 作者: Zhang;C.;Liu;N.;Yagi;A.;Yang;Y. N.
• 通讯作者: Y. N.

Photon number based anaerobic digestion process for efficient bio-methane conversion from ammonium-rich feedstock: Performance evaluation and practical potential

• DOI: 10.1016/j.enconman.2021.114155
• 发表时间: 2021-06
• 期刊: Energy Conversion and Management
• 影响因子: 10.4
• 作者: Yunxin Zhu;Nan Zhang;Zhiyuan Liu;Na Liu;Aditya Sharma;Guoping Chen;Yingnan Yang

Super-effective visible-light-induced photocatalytic water disinfection by a novel P/Ag/Ag2O/Ag3PO4/TiO2 composite and its mechanism

新型P/Ag/Ag2O/Ag3PO4/TiO2复合材料的超高效可见光光催化水消毒及其机理

• 发表时间: 2019
• 作者: Liu;N.;Ma;Q.;Zhang;C.;Yang;Y. N.
• 通讯作者: Y. N.