Initial growth study of TiO2 nanotube arrays anodised in KOH/fluoride/ethylene glycol electrolyte

被引：17
|
作者：
Taib, Mustaffa Ali Azhar [1 ]
Razak, Khairunisak Abdul [1 ]
Jaafar, Mariatti [1 ]
Lockman, Zainovia [1 ]
机构：
[1] Univ Sains Malaysia, Sch Mat & Mineral Resources Engn, Engn Campus, Nibong Tebal 14300, Penang, Malaysia
来源：
MATERIALS & DESIGN | 2017年 / 128卷
关键词：
TiO2; Nanotubes; Anodisation; Electrolyte; Photocatalyts; CALCINATION TEMPERATURE; AQUEOUS-SOLUTION; TRAP STATES; TITANIA; FABRICATION; ANATASE; DEPOSITION; PHASE; CRYSTALLIZATION; DEGRADATION;
D O I：
10.1016/j.matdes.2017.04.097
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The growth process of TiO2 nanotubes (TNTs) in KOH/fluoride/EG was investigated particularly at the initial stages of anodisation. TNTs were obtained after 1 min of anodisation at 60 V but the surface was not completely etched. More complete surface etching was achieved by prolonged anodisation time to 30 min. Anatase TiO2 formation in as-anodised TNTs was observed but annealing was required to induce crystal growth. Photocatalytic activity of 400 degrees C annealed TNTs was assessed by degradation of methylene blue (MB) in aqueous solution under ultraviolet radiation. MB degradation on TNTs prepared in KOH/fluoride/EG was found to be faster (80% degradation after 1 h) compared with TNTs prepared in H2O/fluoride/EG (55% degradation after 1 h).
引用
收藏
页码：195 / 205
页数：11
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