https://scholars.lib.ntu.edu.tw/handle/123456789/606044
標題: | Influence of aqueous chloride and bromide ions on bisphenol A degradation efficiency with zinc oxide nanoparticles | 作者: | Yang Y.-C Sahu R.S YANG-HSIN SHIH |
關鍵字: | BPA;Hydrodynamic particle size;Inorganic ion;Photocatalytic degradation;Zinc oxide;Bromine compounds;Degradation;High resolution transmission electron microscopy;Hydrodynamics;Ions;Light scattering;Organic pollutants;Particle size;Phenols;Photocatalytic activity;Rate constants;Water pollution;Water treatment;ZnO nanoparticles;Bisphenol A;Bisphenols-A;Chloride ions;Halogen ion;Hydrodynamic particles;Inorganic ions;Particles sizes;Zinc oxide nanoparticles;II-VI semiconductors | 公開日期: | 2022 | 卷: | 32 | 期: | 1 | 來源出版物: | Sustainable Environment Research | 摘要: | Zinc oxide (ZnO) nanoparticles (NPs) have been widely investigated for applications in photocatalytic degradation of organic pollutants in wastewater. Despite the advantages of robust ZnO material, its photocatalytic activity is greatly affected by environmental factors. Halogen ions are commonly found in wastewater, which directly affect the pollutant aggregation and sedimentation, therefore it is necessary to discuss their effect on the photocatalytic degradation. The current study assesses the halogen ions effect on the photocatalytic degradation of bisphenol A (BPA) using different dosage of sodium chloride (NaCl) and sodium bromide (NaBr). The microstructural characterization of ZnO NPs was conducted by transmission electron microscopy and hydrodynamic size was analyzed through dynamic light scattering. The effective BPA degradation with ZnO NPs was observed and pseudo-first-order kinetics was calculated. The increase of ZnO NPs dosage from 10 to 100 mg L? 1 enhanced the degradation rate constant of BPA up to 0.089 min? 1 (14.8 folds). In order to evaluate the role halogen ions to degrade BPA, NaBr and NaCl were used. The degradation rate was reduced to 0.0034 min? 1 after the addition of NaBr due to the increase in hydrodynamic particle size, thereby restricting the light adsorption capacity. Noteworthy, upon addition of NaCl up to 500 mM concentration, only a slight decrease on BPA degradation rate was observed. Therefore, this study unveils the role of chloride ions as an effective medium for BPA degradation by ZnO NPs, without aggregation, and provides a novel platform for the treatment of organic pollutants in saline water. ? 2022, The Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124032017&doi=10.1186%2fs42834-022-00119-w&partnerID=40&md5=1cca10deeb668fc3a937b7a17b616877 https://scholars.lib.ntu.edu.tw/handle/123456789/606044 |
ISSN: | 24682039 | DOI: | 10.1186/s42834-022-00119-w |
顯示於: | 農業化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。