Interfacial engineering of Ni-phytate and Ti3C2Tx MXene-sensitized TiO2 toward enhanced sterilization efficacy under 808 nm NIR light irradiation

被引:40
作者
Jin, Cheng [1 ]
Sun, Dengning [1 ]
Sun, Zhongti [1 ]
Rao, Shaosheng [1 ]
Wu, Zirui [1 ]
Cheng, Chao [1 ]
Liu, Lei [1 ]
Liu, Qinqin [1 ]
Yang, Juan [1 ]
机构
[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Jiangsu, Peoples R China
来源
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2023年 / 330卷
基金
中国国家自然科学基金;
关键词
NIR-responsive; Photodynamic; Photothermal; Sterilization; Hot-electron; DESIGN; HOT;
D O I
10.1016/j.apcatb.2023.122613
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Constructing a near-infrared (NIR) light-responsive antibacterial material keeps a preferential goal yet a huge challenge. Herein, we controllably manufactured a sandwich architecture comprised of plasmon (Ti3C2Tx MXene) and photosensitizer (PANi (Ni-phytate)) locating on wide-bandgap semiconductor (TiO2), named as PANi/TiO2/Ti3C2Tx (PTM), which can achieve bidirectional transfer of hot-electrons under 808 nm NIR light irradiation, significantly augmenting the carrier concentration of TiO2 surface. The increase of hot-electron concentration not only strengthens the chemical activity through the O2 uptake simulations by the theoretical investigations, but also elevates the photothermal conversion efficiency up to 43.3 %, which is far superior to other reported photocatalytic-photothermal system. The 808 nm NIR-activated germicide can realize 99.9 % sterilization efficacy against the Escherichia coli (E. coli) with the collaboration of photocatalytic and photothermal treatment. This work offered a brand-new idea to construct a NIR-driven antimicrobial material achieving the synergistic interaction of photocatalytic therapy and photothermal therapy.
引用
收藏
页数:9
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