纤锌矿晶体结构
结晶度
光催化
锐钛矿
材料科学
环境修复
化学工程
锌
化学
冶金
复合材料
有机化学
污染
催化作用
工程类
生物
生态学
作者
Jhon Sebastián Hernández Niño,Julie Joseane Murcia Mesa,Hugo Rojas,M.C. Hidalgo,J.A. Navı́o
出处
期刊:Revista Facultad de Ingenieria Universidad de Antioquia
[Universidad de Antioquia]
日期:2022-07-18
标识
DOI:10.17533/udea.redin.20220785
摘要
In this study, ZnO/TiO2 and ZnO/Nb2O5 photocatalysts were evaluated in the river pollution remediation and wastewater treatment from textile factories, thus, the target pollutants selected for this study were enteropathogenic bacteria and commercial dyes. The mixed oxide systems were extensively analyzed in order to explore their physicochemical properties. From this analysis, it was found that the coupling of two oxides did not modify the crystallinity of the pristine semiconductors. As a result, XRD Wurtzite phase, hexagonal phase, and anatase phases were identified for ZnO, Nb2O5, and TiO2 photocatalyst, respectively. Using UV-Vis DRS, a higher absorption for mixed oxides in the visible region of the electromagnetic spectrum was observed, along with a decrease in the band gap value in these materials. The results of the photocatalytic activity evaluation showed that the coupling of ZnO with Nb2O5 and TiO2 increased the effectiveness of the total organic carbon (TOC) and E. Coli elimination. 83% of TOC and elimination of 64% of E. coli were achieved using ZnO/Nb2O5 photocatalyst for the treatment of water samples from the polluted river.
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