Defect engineered visible light active ZnO nanorods for photocatalytic treatment of water

被引：108

作者：

Bora, Tanujjal ^{[1
]}

Sathe, Priyanka ^{[1
,2
]}

Laxman, Karthik ^{[1
]}

Dobretsov, Sergey ^{[2
,3
]}

Dutta, Joydeep ^{[4
]}

机构：

[1] Sultan Qaboos Univ, Water Res Ctr, Chair Nanotechnol, POB 17, Muscat 123, Oman

[2] Sultan Qaboos Univ, Coll Agr & Marine Sci, Dept Marine Sci & Fisheries, Muscat 123, Oman

[3] Sultan Qaboos Univ, Ctr Excellence Marine Biotechnol, POB 34, Muscat 123, Oman

[4] KTH Royal Inst Technol, Mat & Nano Phys Dept, Funct Mat Div, Isajordsgatan 22, SE-16440 Stockholm, Sweden

来源：

CATALYSIS TODAY | 2017年 / 284卷

关键词：

Zinc oxide; Surface defect; Oxygen vacancy; Annealing; Photocatalysis; Water purification; SENSITIZED SOLAR-CELLS; ZINC-OXIDE NANORODS; ANTIBACTERIAL ACTIVITY; GREEN LUMINESCENCE; SURFACE-DEFECTS; OXYGEN VACANCY; DEGRADATION; PHENOL; NANOPARTICLES; FILMS;

D O I：

10.1016/j.cattod.2016.09.014

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Photocatalytic degradation of organic wastes and microbes in water using solar light is a green technology that requires the design of visible light active photocatalysts. Here we report the fabrication of visible light active zinc oxide nanorods (ZnO NRs), wherein the visible light absorption is enhanced by modulating the surface defects on the NRs. Oxygen vacancies in the NRs as characterized by photoluminescence and X-ray photoelectron spectroscopy are controlled by annealing at different temperatures in the ambient. The role of surface defects on the visible light photocatalytic degradation of an organic dye, industrial waste, bacterial culture and inland brackish water is studied. Results presented here provide a simple strategy to make the wide bandgap ZnO NRs visible light active, enabling their use for the photocatalytic decontamination of water. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：11 / 18

页数：8

共 75 条

[1] Microwave-enhanced degradation of phenol over Ni-loaded ZnO nanorods catalyst [J].