聚丙烯腈
静电纺丝
纳米纤维
材料科学
X射线光电子能谱
光催化
核化学
可见光谱
吸附
化学工程
透射电子显微镜
纳米技术
催化作用
化学
有机化学
聚合物
复合材料
工程类
光电子学
作者
Jing Han,Haitao Ren,Ting‐Ting Li,Bing‐Chiuan Shiu,Yonggui Li,Jia‐Horng Lin,Ching‐Wen Lou
标识
DOI:10.1177/15280837211056985
摘要
Visible light response PAN@Ag-Ag 2 O/Sch (PAN@AS, schwertmannite and polyacrylonitrile abbreviated as Sch and PAN) nanofibers with different mass ratios were synthesized by electrospinning technology and pH-induced precipitation reaction. X-Ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy analysis showed that the formation of Ag-Ag 2 O/Sch heterojunction and Ag-Ag 2 O nanoparticles were evenly distributed on the surface of Sch. The prepared nanofibers have high oxidative removal performance for As(III) under visible light. In the PAN@AS0.10 system, the total As removal percent can reach 90.96% after 120 min irradiation at pH 4.0. The scavenger experiments confirmed that the main active substances of the PAN@AS0.10 system were h + and •OH. The high oxidation and removal performance of the PAN@AS0.10 composite for As(III) was attributed to the effective separation of photogenerated electron-hole pairs and high adsorption capacity of Sch for As under acidic conditions. This research provides a new material for the oxidation and removal of pollutants in water [such as As(III)] and also provides a research basis for the preparation of recyclable photocatalysts.
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