An innovative AgI/MIL-100(Fe) Z-scheme heterojunction for simultaneously enhanced photoreduction of Cr(VI) and antibacterial activity
An innovative AgI/MIL-100(Fe) Z-scheme heterojunction for simultaneously enhanced photoreduction of Cr(VI) and antibacterial activity
复制标题
创新的 AgI/MIL-100(Fe) Z 型异质结，可同时增强 Cr(VI) 的光还原和抗菌活性
DOI：
10.1016/j.apsusc.2023.156528
复制
发表时间：
2023-01
影响因子：
6.7
通讯作者：
Guoxiang Yang
中科院分区：
文献类型：
--
作者：
Qi Wang;Kejie Zhang;Shuzhen Zheng;Xiao Hu;Longyang Wang;Hao Du;Derek Hao;Guoxiang Yang
设计具有优异光催化性能和强氧化还原性能的光催化剂是一项具有挑战性的任务。在这项研究中，通过简单的沉淀方法成功制备了一种保留氧化还原性能的新型Z型异质结AgI/MIL-100纳米复合材料。实验结果表明，Z型异质结构可以显着提高异质结界面间的电荷转移效率。此外，它还能产生活性氧（ROS），对大肠杆菌具有优异的光催化作用。科利安德S.金黄色葡萄球菌失活和 Cr(VI) 还原。此外，硝基蓝四唑（NBT）和对苯二甲酸（TA）转化实验进一步证实了ROS增强过程。当AgI与MIL-100(Fe)的质量比为1:10（命名为AM-10）时，它表现出最佳的Cr(VI)还原光催化活性。在 LED 光照射下，Cr(VI) 可在 75 分钟内完全还原。 AM-10对Cr(VI)的还原率分别是AgI和MIL-100(Fe)的15.3倍和2.6倍。而且，经过5次Cr(VI)还原循环后，仍能达到良好的稳定性。而且，它可以彻底杀死E。科利安德S. 45 分钟内金黄色葡萄球菌达到 107CFU/mL。捕获实验证实其主要抗菌活性物种为h+和自由基dotO2-。因此，本研究可以提供一种具有双重净化功能的Z型异质结纳米复合材料的环境友好型光催化工艺。
Designing photocatalysts with excellent photocatalytic performance and strong redox properties is a challenging task. In this study, a novel Z-scheme heterojunction AgI/MIL-100 nanocomposite with retaining redox properties was successfully fabricated by a simple precipitation method. According to the experimental results, the Z-scheme heterostructure can significantly improve the charge transfer efficiency between interfaces of heterojunction. In addition, it could generate reactive oxygen species (ROS) and had excellent photocatalytic effects onE. coliandS. aureusinactivation and Cr(VI) reduction. Furthermore, the ROS enhancement process was further confirmed by nitroblue tetrazolium (NBT) and terephthalic acid (TA) conversion experiments. When the mass ratio of AgI to MIL-100(Fe) was 1:10 (named AM-10), it displayed optimal photocatalytic activity toward Cr(VI) reduction. The Cr(VI) could be completely reduced within 75 min under LED light irradiation. The reduction rate of Cr(VI) by AM-10 was 15.3-fold and 2.6-fold of that by AgI and MIL-100(Fe), respectively. Moreover, after 5 cycles of Cr(VI) reduction, it could still achieve good stability. Furthermore, it could completely killE. coliandS. aureusat 107CFU/mL within 45 min. Capture experiments confirmed that the main antibacterial active species were h+andradical dotO2-. Therefore, this study can provide an environmentally friendly photocatalytic process using Z-scheme heterojunction nanocomposites with dual purification functions.
登录
查看更多内容
受珊瑚启发的多孔 SnS2 纳米级设计，用于光催化还原和去除水性 Cr (VI)
影响因子：
22.1
作者：
Qu Jiafu;Chen Dongyun;Li Najun;Xu Qingfeng;Li Hua;He Jinghui;Lu Jianmei
通讯作者：
Lu Jianmei
影响因子：
9.5
作者：
Etacheri, Vinodkumar;Michlits, Georg;Pillai, Suresh C.
通讯作者：
Pillai, Suresh C.
影响因子：
12.8
作者：
Cen Zhao;Luis E. Arroyo-Mora;A. DeCaprio;V. Sharma;D. Dionysiou;K. O’Shea
通讯作者：
Cen Zhao;Luis E. Arroyo-Mora;A. DeCaprio;V. Sharma;D. Dionysiou;K. O’Shea
影响因子：
13.6
作者：
Hao Zhang;Yu-Hui Luo;Feng-Yu Chen;Wu Geng;Xinrong Lu;Dongen Zhang
通讯作者：
Hao Zhang;Yu-Hui Luo;Feng-Yu Chen;Wu Geng;Xinrong Lu;Dongen Zhang
通过跟踪分解的构件来深入了解光电催化细菌灭活机制的系统方法
影响因子：
11.4
作者：
Sun, Hongwei;Li, Guiying;An, Taicheng
通讯作者：
An, Taicheng