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Ni, Eu-Co doping effect on the photocatalytic activity and magnetic recyclability in multifunctional single-phase photocatalysts Bi5FeTi3O15
Journal of Colloid and Interface Science ( IF 9.9 ) Pub Date : 2018-09-18 , DOI: 10.1016/j.jcis.2018.09.054
Hui Sun , Tianshu Yao , Xi Xie , Yuxi Lu , Yan Wang , Zirou Xu , Jie Han , Xiaobing Chen

Bi5−yEuyFe1−xNixTi3O15 (x = 0, 0.05, 0.10, 0.15, 0.20; y = 0, 0.1, 0.3, 0.5) nanosheet-based nanoflowers as magnetic recyclable visible-light photocatalysts toward Rhodamine B (RhB) degradation were successfully synthesized by a hydrothermal method. As started from Bi5FeTi3O15 (BFTO), Ni was firstly employed to substitute for Fe at B-site to improve the magnetism for magnetic recyclability. After Ni doping (Bi5Fe1−xNixTi3O15: BFNTO-x, x = 0, 0.05, 0.10, 0.15, 0.20), both the ferromagnetism and photocatalytic activity were obviously improved, where BFNTO-0.1 (Bi5Fe0.9Ni0.1Ti3O15) exhibited the maximum remnant and statured magnetization of 0.14 and 0.82 emu/g respectively. To further improve the magnetism and photocatalytic activity, Eu was chosen to substitute for Bi at A-site. Both ferromagnetism and photocatalytic properties of Bi5−yEuyFe0.9Ni0.1Ti3O15 (BEFNTO-y, y = 0, 0.1, 0.3, 0.5) were further improved by optimizing the doped europium content. The BEFNTO-0.1 (Bi4.9Eu0.1Fe0.9Ni0.1Ti3O15) showed enhanced photocatalytic activity and could be recycled simply by applying a magnet bar. This work may provide a basis for further developing new visible-light photocatalysts because the layer-structured Aurivillius phase has significant potential in elemental doping and further structural engineering applications.



中文翻译:

Ni,Eu-Co掺杂对多功能单相光催化剂Bi 5 FeTi 3 O 15的光催化活性和磁可循环性的影响

Bi 5- y Eu y Fe 1- x Ni x Ti 3 O 15x  = 0,0.05,0.10,0.15,0.20; y  = 0,0.1,0.3,0.5)纳米片基纳米花作为可循环利用的可见光光催化剂通过水热法成功合成了对罗丹明B(RhB)的降解。从Bi 5 FeTi 3 O 15(BFTO)开始,首先使用Ni代替B位的Fe,以提高磁性,从而实现磁可循环性。Ni掺杂后(Bi 5 Fe 1− x Ni x Ti 3O 15:BFNTO- xx  = 0,0.05,0.10,0.15,0.20 ),铁磁性和光催化活性均得到明显改善,其中BFNTO-0.1(Bi 5 Fe 0.9 Ni 0.1 Ti 3 O 15)的残留量最大。和规定的磁化强度分别为0.14和0.82 emu / g。为了进一步改善磁性和光催化活性,选择了Eu替代A位的Bi。Bi 5− y Eu y Fe 0.9 Ni 0.1 Ti 3 O 15(BEFNTO- y)的铁磁性和光催化性能ÿ  = 0,0.1,0.3,0.5)进一步通过优化掺杂铕含量提高。BEFNTO-0.1(Bi 4.9 Eu 0.1 Fe 0.9 Ni 0.1 Ti 3 O 15)表现出增强的光催化活性,可以通过应用磁棒简单地进行回收。这项工作可能为进一步开发新的可见光光催化剂提供基础,因为层结构的Aurivillius相在元素掺杂和进一步的结构工程应用中具有巨大的潜力。

更新日期:2018-09-18
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