4.7 Article

One-pot synthesis of In2O3/ZnO nanocomposite photocatalysts and their enhanced photocatalytic activity against cationic and anionic dye pollutants

期刊

INORGANIC CHEMISTRY COMMUNICATIONS
卷 157, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.inoche.2023.111392

关键词

Indium oxide; Zinc oxide; Nanocomposite; Photocatalytic degradation; Precipitation method; Photocatalyst

向作者/读者索取更多资源

An In2O3/ZnO nanocomposite was synthesized and applied in the photocatalytic degradation of dyes. The nanocomposite showed two phases, In2O3 and ZnO, and had an increased specific surface area with higher content of In2O3. The nanocomposite exhibited good photocatalytic activity in degrading cationic and anionic dyes under different pH conditions.
An In2O3/ZnO nanocomposite was synthesized by co-precipitation and applied in the photocatalytic degradation of cationic and anionic dyes. The nanocomposite was characterized by X-ray diffractometry (XRD), Raman spectroscopy, X-ray photoelectron spectrometry (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray spectrometry (EDS), surface area analysis and UV-visible diffuse reflectance spectrometry (UV-Vis DRS). The XRD, Raman and XPS analyses revealed that the nanocomposite was composed of two phases (In2O3 and ZnO). SEM images showed agglomerations of In2O3 and ZnO, and TEM images confirmed the adhesion of In2O3 nanoparticles to the surface of ZnO. The specific surface area of the nanocomposite increased from 5.86 to 8.41 m(2)/g with increments of In2O3 content. The optical bandgap energies of ZnO and In2O3 powders were 3.12 and 2.90 eV, respectively. The best photocatalyst was 2%In2O3/ZnO nanocomposite and the optimal dosage was 150 mg. Under UV irradiation, 92.17, 55.54 and 38.61% of MB, RhB and MO, respectively, were degraded over the 2%In2O3/ZnO nanocomposite. Since the point of zero charge of 2%In2O3/ZnO was about 6.6, MB and RhB were more completely degraded under basic conditions while MO was more completely degraded under acidic conditions. The possible charge transfer mechanism for photocatalytic degradation over the 2%In2O3/ZnO nanocomposite was proposed based on an active species test. The results showed that h(+), (OH)-O-center dot and O-center dot(2) species were the reactive species responsible for the photocatalytic degradation of MB, RhB and MO. The In2O3/ZnO nanocomposite could remove the cationic dyes from water in a neutral condition and exhibited good stability.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据