A BiOBr/Co-Ni layered double hydroxide nanocomposite with excellent adsorption and photocatalytic properties

被引：27

作者：

Ao, Yanhui ^{[1
]}

Wang, Dandan ^{[1
]}

Wang, Peifang ^{[1
]}

Wang, Chao ^{[1
]}

Hou, Jun ^{[1
]}

Qian, Jin ^{[1
]}

机构：

[1] Hohai Univ, Minist Educ, Coll Environm, Key Lab Integrated Regulat & Resource Dev Shallow, Nanjing 210098, Jiangsu, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 67期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

ANION-EXCHANGE; METHYL-ORANGE; BIOX X; DEGRADATION; COMPOSITE; PHOTODEGRADATION; ELECTRODE; REMOVAL; PHENOL; ACID;

D O I：

10.1039/c5ra05473g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A BiOBr/Co-Ni-NO3 layered double hydroxide (LDH) nanocomposite was prepared by an in situ growth method via a facile anion-exchange precipitation process. The resulting BiOBr/Co-Ni-NO3 LDH nanocomposite was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-visible diffuse reflectance spectroscopy (UV-DRS), and Brunauer-Emmett-Teller (BET) surface areas. Results showed that the BiOBr nanosheets dispersed well on the surface of the LDHs in a vertical manner, like arrays. Moreover, compared to pure BiOBr nanosheets, Co-Ni-NO3 LDHs and Co-Ni-Br LDHs, the BiOBr/Co-Ni-NO3 LDH nanocomposite showed much higher adsorption and photocatalytic properties for organic dyes (methyl orange (MO), rhodamine B (RhB)) and phenol under UV-light irradiation. Furthermore, the mechanism of photocatalytic degradation of dyes under UV-light irradiation was investigated in detail. This work paves a way to design new types of LDH-based 2D-2D composite photocatalysts with high adsorption and photocatalytic activity.

引用

页码：54613 / 54621

页数：9

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