Phosphate Promoted Hydrogen Radical Production with Fe@Fe2O3 Core-Shell Nanowires for Enhanced Reactive Oxygen Species Generation

摘要：

　　In this study,we demonstrate that the addition of phosphate could significantly promote the oxygen activation performance of Fe@Fe2O3 core-shell nanowires to generate more reactive oxygen species (ROS).The rotating ring disk electrochemical analysis revealed that the low ROS yield of Fe@Fe2O3 core-shell nanowires was ascribed to their nearly four-electron oxygen reduction to H2O in the absence of phosphate.Interestingly,the addition of phosphate could shift the nearly four-electron molecular oxygen reduction to around one-electron proton reduction to hydrogen radical,which subsequently facilitated ROS generation.This study provides a new method to improve the ROS yield of zero-valent iron induced oxygen activation process.

关键词： Fe@Fe2O3 Oxygen activation reaction Reactive oxygen species (ROS) Rotating disc electrode (RDE) Koutecky-Levich plot

作者: MU Yi AI Zhihui ZHANG Lizhi

作者单位: Central China Normal University, Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental Chemistry

会议类型: 国际会议

会议名称: 2015 International Symposium on Environmental Science and Technology (2015 ISEST)(2015环境科学与技术国际会议)

会议地点: 重庆

会议语种:英文

页码: 33-38

在线出版日期: 2015-11-18（万方平台首次上网日期，不代表论文的发表时间）