Artificial Synthesis and Improved Photo Catalysis Performance of Bionic Hierarchical Fibers Alpha-Fe2O3
Alpha-Fe2O3 is a cheap,abundant and low toxic oxidation semiconductor,which is a promising photovoltaic,photocatalytic,and electrochemical sensing material due to the visible light indirect band gap of 2.06 eV(about 600 nm).The size and shape of the Fe2O3 play dominant roles in magnetic material,environmental remediation and photocatalysis.The novel hierarchical fibrous structures of pure and ceramic α-Fe2O3 has been prepared using cotton as biological template.The field emission scanning electron microscopy(FESEM)results show that the prepared iron oxide faithfully inherited the biological structure of the original cotton template.The bionic fibers material possesses certain magnetism,although common α-Fe2O3 is not magnetic iron oxide.The bionic α-Fe2O3 fibers exhibit superior photocatalytic decoloration performances of up to 96.8%for the methylene blue in the short time of 200 minutes under visible light irradiation.It is concluded that the presence of the hierarchical porous and fibrous structures in the bionic product act as active catalytic centers and play key roles in organic dye elimination.
Feng CHEN Xiao CHEN Zhi-gang CHEN
School of Chemistry,Biology and Materials Engineering,Jiangsu Key Laboratory for Environment Functio School of Chemistry,Biology and Materials Engineering,Jiangsu Key Laboratory for Environment Functio
国际会议
上海
英文
535-540
2017-12-30（万方平台首次上网日期，不代表论文的发表时间）