期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 608, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2020.125580
关键词
Phosphorus doping; Z-scheme heterojunction; V2O5; P-g-C3N4; Methyl orange (MO)
资金
- National Major Science and Technology Program for Water Pollution Control and Treatment, China [2017ZX07301001, 2018ZX07601003, 2018ZX07601001]
This study focused on the photocatalytic removal of dye from water using Z-scheme V2O5/P-g-C3N4 materials. The results showed that the Z-scheme heterostructure exhibited improved degradation efficiency due to the effective separation of electron-hole pairs and the formation of active species. This research provides a new method for dye removal from water.
Dye removal from water via photocatalytic technologies has attracted considerable attention. In this study, Z-scheme V2O5/P-g-C3N4 photocatalytic materials were prepared by heat treatment and characterized by a series of characterization methods. Under the visible light irradiation condition, the degradation performance of the prepared V2O5/P-g-C3N4 photocatalytic material for methyl orange (MO) removal was investigated. The results indicated that the V2O5/P-g-C3N4 Z-scheme heterostructure exhibited the best apparent rate of degrading MO: 14.5 and 3.7 times higher than those of V2O5 and P-C3N4 when they were separately used. The free radical capture and electron spin resonance (ESR) experiments confirmed that h(+) and center dot O-2(-) were the primary active species in the photocatalytic degradation of MO by V2O5/P-g-C3N4 Z-scheme heterogeneous photocatalytic materials. The improvement of catalytic activity was primarily attributed to the formation of a V2O5/P-g-C3N4 Z-scheme heterojunction, which effectively separated the photoexcited electron-hole pairs and improved the reaction efficiency. This study affords a simple strategy for preparing the photocatalytic material, a V2O5C3N4/P-g-C3N4 Z-scheme heterojunction, and avails a new method for the MO removal from water.
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。
推荐
暂无数据