摘要
采用电化学阳极氧化法,以含有0.25wt%NH4F和2mL H_2O的乙二醇溶液作为电解液制备了TiO_2纳米管阵列,然后通过不同温度退火比较其形貌、结构、元素组成和亲水性能。实验表明,600℃以下温度退火基本不会引起TiO_2纳米管阵列的形貌改变,但是600℃退火会使得部分TiO_2纳米管坍塌。随着退火温度的升高,TiO_2由无定型结构向晶体结构转变,同时接触角减小,亲水性变好。另一方面,F元素也会影响TiO_2纳米管阵列的亲水性能,F元素含量越少,亲水性越好。
TiO2 nanotube arrays were synthesized in the ethylene glycol electrolyte contains 0. 25wt%NH4F and 2 m L H2 O by electrochemical anodization. The formed TiO2 nanotube arrays annealed at different temperatures were compared in terms of their morphologies,structures,element composition and hydrophilicity. The results show that the morphologies of the TiO2 nanotube arrays keep the same when the annealing temperature below 600 ℃, but some TiO2 nanotubes collapsed when the annealing temperature reached 600 ℃. Aa the annealing temperature increasing,the structure of TiO2 changes from amorphous to crystal,the contact angle and hydrophilicity become better. On the other hand,F element also has a clear effect on hydrophilicity of TiO2 nanotube arrays. Less F element content results in better hydrophilicity of TiO2 nanotube arrays.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2017年第1期153-157,共5页
Journal of Synthetic Crystals
基金
国家自然科学基金(51402209)
山西省科技攻关计划项目(20140321012-01
201603D121017)
山西省基础研究项目(2015021075
201601D102020)
山西省高校科技创新研究项目(2016124)
太原理工大学校基金(2015MS046)
