Facile synthesis of oxygen defective yolk-shell BiO2-x for visible-light-driven photocatalytic inactivation of Escherichia coli 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Journal of Materials Chemistry, A. Materials for energy and sustainability
年/卷/期
2018 / 6 / 12
页码
4997-5005
ISSN号
2050-7488
作者单位
Chinese Univ Hong Kong, Sch Life Sci, Shatin, Hong Kong, Peoples R China;Chinese Univ Hong Kong, Sch Life Sci, Shatin, Hong Kong, Peoples R China;Chinese Univ Hong Kong, Sch Life Sci, Shatin, Hong Kong, Peoples R China;Nanyang Normal Univ, Coll Chem & Pharmaceut Engn, Engn Technol Res Ctr Henan Prov Solar Catalysis, Nanyang 473061, Henan, Peoples R China;Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China;Chinese Univ Hong Kong, Sch Life Sci, Shatin, Hong Kong, Peoples R China;
作者
Sun, Hongli;Yip, Ho Yin;Jiang, Zhifeng;Ye, Liqun;Lo, Irene M. C.;Wong, Po Keung;
摘要
Oxygen defective yolk-shell BiO2-x spheres are successfully synthesized by a facile solvothermal method for the first time. The variations between the diffusion rate of the core and the formation rate of the shell, which are caused by the temperature gradient originating from the heating rate, result in the formation of BiO2-x spheres with different interior structures. The as-synthesized yolk-shell BiO2-x spheres possess distinctive oxygen vacancies, which are demonstrated by electron paramagnetic resonance and X-ray photoelectron spectral analyses. The oxygen vacancies with a high affinity for molecular oxygen, and the enhanced light absorption ability resulting from the multiple reflections of the incident light within the interior voids, play key roles in the photocatalytic bacterial inactivation. Scavenger studies indicate that O2- and H2O2 are the major reactive species guaranteeing the prominent oxidation ability toward the bacterial cells. This study would not only provide direct evidence for the oxygen vacancy promoted photocatalytic bacterial inactivation, but also shed light on the design of highly efficient photocatalysts with intricate yolk-shell structures.
机翻摘要
暂无翻译结果,您可以尝试点击头部的翻译按钮。
若您需要申请原文,请登录。

最新评论

暂无评论。

登录后可以发表评论

意见反馈
返回顶部