Publikationsdatum:
2018
Beschreibung:
〈p〉Publication date: 15 January 2019〈/p〉
〈p〉〈b〉Source:〈/b〉 Journal of Colloid and Interface Science, Volume 534〈/p〉
〈p〉Author(s): Hui Sun, Tianshu Yao, Xi Xie, Yuxi Lu, Yan Wang, Zirou Xu, Jie Han, Xiaobing Chen〈/p〉
〈div xml:lang="en"〉
〈h5〉Abstract〈/h5〉
〈div〉〈p〉Bi〈sub〉5−〈/sub〉〈em〉〈sub〉y〈/sub〉〈/em〉Eu〈em〉〈sub〉y〈/sub〉〈/em〉Fe〈sub〉1−〈/sub〉〈em〉〈sub〉x〈/sub〉〈/em〉Ni〈em〉〈sub〉x〈/sub〉〈/em〉Ti〈sub〉3〈/sub〉O〈sub〉15〈/sub〉 (〈em〉x〈/em〉 = 0, 0.05, 0.10, 0.15, 0.20; 〈em〉y〈/em〉 = 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 Bi〈sub〉5〈/sub〉FeTi〈sub〉3〈/sub〉O〈sub〉15〈/sub〉 (BFTO), Ni was firstly employed to substitute for Fe at B-site to improve the magnetism for magnetic recyclability. After Ni doping (Bi〈sub〉5〈/sub〉Fe〈sub〉1−〈/sub〉〈em〉〈sub〉x〈/sub〉〈/em〉Ni〈em〉〈sub〉x〈/sub〉〈/em〉Ti〈sub〉3〈/sub〉O〈sub〉15〈/sub〉: BFNTO-〈em〉x〈/em〉, 〈em〉x〈/em〉 = 0, 0.05, 0.10, 0.15, 0.20), both the ferromagnetism and photocatalytic activity were obviously improved, where BFNTO-0.1 (Bi〈sub〉5〈/sub〉Fe〈sub〉0.9〈/sub〉Ni〈sub〉0.1〈/sub〉Ti〈sub〉3〈/sub〉O〈sub〉15〈/sub〉) 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 Bi〈sub〉5−〈/sub〉〈em〉〈sub〉y〈/sub〉〈/em〉Eu〈em〉〈sub〉y〈/sub〉〈/em〉Fe〈sub〉0.9〈/sub〉Ni〈sub〉0.1〈/sub〉Ti〈sub〉3〈/sub〉O〈sub〉15〈/sub〉 (BEFNTO-〈em〉y〈/em〉, 〈em〉y〈/em〉 = 0, 0.1, 0.3, 0.5) were further improved by optimizing the doped europium content. The BEFNTO-0.1 (Bi〈sub〉4.9〈/sub〉Eu〈sub〉0.1〈/sub〉Fe〈sub〉0.9〈/sub〉Ni〈sub〉0.1〈/sub〉Ti〈sub〉3〈/sub〉O〈sub〉15〈/sub〉) 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.〈/p〉〈/div〉
〈/div〉
〈div xml:lang="en"〉
〈h5〉Graphical abstract〈/h5〉
〈div〉〈p〉〈figure〉〈img src="https://ars.els-cdn.com/content/image/1-s2.0-S0021979718311305-ga1.jpg" width="500" alt="Graphical abstract for this article" title=""〉〈/figure〉〈/p〉〈/div〉
〈/div〉
Print ISSN:
0021-9797
Digitale ISSN:
1095-7103
Thema:
Chemie und Pharmazie
,
Physik
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