Preparation of Al-TiO2 nanotubes and their photocatalytic activities

被引：4
|
作者：
Lee, Hyeran [1 ]
Lee, Deuk Yong [1 ]
Lee, Myung-Hyun [2 ]
Kim, Bae-Yeon [3 ]
Song, Yo-Seung [4 ]
机构：
[1] Daelim Univ, Dept Biomed Engn, 29 Imgok Ro, Anyang 13916, South Korea
[2] Korea Inst Ceram Engn & Technol, Div Energy & Environm, Jinju 52851, South Korea
[3] Incheon Natl Univ, Dept Mat Sci & Engn, Incheon 22012, South Korea
[4] Korea Aerosp Univ, Dept Mat Engn, Goyang 10540, South Korea
来源：
JOURNAL OF ELECTROCERAMICS | 2019年 / 42卷 / 3-4期
基金：
新加坡国家研究基金会;
关键词：
Al-TiO2; electrospinning; nanotube; calcination temperature; methylene blue; Photodegradation; BAND-GAP ENERGY; CRYSTAL-STRUCTURE; TIO2; DEGRADATION; FABRICATION; NANOFIBERS; MORPHOLOGY;
D O I：
10.1007/s10832-018-0159-5
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Al-TiO2 nanotubes having an Al/Ti molar ratio of 0.38 were prepared using a sol-gel derived electrospinning and subsequent calcination at intervals of 50 degrees C from 500 to 650 degrees C to investigate the effect of calcination temperature on the crystal structure and the photocatalytic activity of methylene blue (MB). XRD results revealed that the Al-TiO2 nanotubes were composed of anatase (4546%) and rutile (5355%). The Barrette-Emmett-Teller (BET) surface area and the degradation kinetic constant increased dramatically from 151 to 226m(2)/g and from 2.0x10(-2)min(-1) to 6.3x10(-2)min(-1), respectively. The Al-TiO2 nanotubes calcined above 600 degrees C exhibited enhanced MB degradation (100%) compared to that of the TiO2 nanotubes (27%) mainly due to the larger BET area.
引用
收藏
页码：124 / 128
页数：5
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