Zinc oxide/vanadium pentoxide heterostructures with enhanced day-night antibacterial activities

被引:175
作者
Sun, Haiyun [1 ]
Yang, Zhaoqing [1 ]
Pu, Yanan [1 ]
Dou, Wenwen [1 ]
Wang, Caiyu [1 ]
Wang, Wenhui [1 ]
Hao, Xiangping [1 ]
Chen, Shougang [1 ]
Shao, Qian [2 ]
Dong, Mengyao [3 ,4 ]
Wu, Shide [5 ]
Ding, Tao [6 ]
Guo, Zhanhu [3 ]
机构
[1] Ocean Univ China, Coll Mat Sci & Engn, Qingdao 266100, Shandong, Peoples R China
[2] Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao 266590, Shandong, Peoples R China
[3] Univ Tennessee, Dept Chem & Biomol Engn, Integrated Composites Lab, Knoxville, TN 37934 USA
[4] Zhengzhou Univ, Key Lab Mat Proc & Mold, Minist Educ, Natl Engn Res Ctr Adv Polymer Proc Technol, Zhengzhou 450002, Henan, Peoples R China
[5] Zhengzhou Univ Light Ind, Henan Prov Key Lab Surface & Interface Sci, 136 Sci Ave, Zhengzhou 450001, Henan, Peoples R China
[6] Henan Univ, Coll Chem & Chem Engn, Kaifeng 475004, Peoples R China
关键词
ZnO nanoflowers; V2O5; nanowires; Heterostructure; Simulated sunlight; Dark; Antibacterial; VISIBLE-LIGHT; PHOTOCATALYTIC ACTIVITY; ZNO NANOPARTICLES; OXIDATIVE STRESS; GRAPHENE OXIDE; DEGRADATION; COMPOSITES; NANOCOMPOSITES; SHELL; V2O5;
D O I
10.1016/j.jcis.2019.03.061
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
Low photocatalytic efficiency of visible light and fast recombination of photo-generated carriers are two challenges facing the applications of photocatalyst sterilant zinc oxide (ZnO). Meanwhile, both light and dark photocatalytic activities are important. It is of great theoretical and practical significance to construct a day-night photocatalytic antibacterial material, which is beneficial to the effective use of energy and to tackle the limitation of using photocatalytic bacteriostat. ZnO nanoflowers decorated vanadium pentoxide (V2O5) nanowires heterojunction (ZVH) was firstly fabricated using a facile water-bathing method. The designed ZVH structure efficiently produced abundant reactive oxygen species (ROS) in both light and darkness. It yielded 99.8% and 99.0% of antibacterial rate against S. aureus due to oxidative stress induced by ROS in light and darkness, respectively. The generation of ROS played a major role in the antibacterial activities against S. aureus under both light and dark conditions. The prepared ZVH with improved antibacterial properties provides an alternative for day-night antibacterial agents. (C) 2019 Elsevier Inc. All rights reserved.
引用
收藏
页码:40 / 49
页数:10
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