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引用本文:   李振, 刘寒蒙, 姚志霞, 孙玉静, 李壮. 二氧化钛纳米管阵列/钛pH电极制备与表征. 分析化学, 2018, 46(12): 1961-1967. doi:  10.11895/j.issn.0253-3820.181459 [复制]

Citation:   LI Zhen, LIU Han-Meng, YAO Zhi-Xia, SUN Yu-Jing, LI Zhuang. Preparation and Characterization of Titanium Dioxide Nanotube Array/Titanium pH Electrode. Chinese Journal of Analytical Chemistry, 2018, 46(12): 1961-1967. doi: 10.11895/j.issn.0253-3820.181459 [复制]

二氧化钛纳米管阵列/钛pH电极制备与表征

通讯作者:  孙玉静, yjsun@ciac.ac.cn; 李壮, zli@ciac.ac.cn

收稿日期: 2018-07-13

接受日期: 2018-09-28

出版日期: 2018-12-20

基金项目: 本文系国家重点研究发展计划(No.2016YFC1400601-2)和国家自然科学基金项目(No.21405146)资助

Preparation and Characterization of Titanium Dioxide Nanotube Array/Titanium pH Electrode

Corresponding author:  SUN Yu-Jing, yjsun@ciac.ac.cn; LI Zhuang, zli@ciac.ac.cn

Received Date:  2018-07-13

Accepted Date:  2018-09-28

Published Date:  2018-12-20

Fund Project:  This work was supported by the National Key Research and Development Program of China (No.2016YFC1400601-2) and the National Natural Science Foundation of China (No.21405146)

采用阳极氧化法,在含有NH4F以及乙二醇和水的混合溶液中,阳极氧化金属钛丝,制备二氧化钛纳米管阵列/钛(TiO2 NTAs/Ti)作为pH电极。利用扫描电镜(SEM)、X射线衍射(XRD)和X射线光电子能谱(XPS)对电极进行了表征。考察了电极的亲水性以及表面化学吸附氧OH)(性能,探究了pH响应机理。当控制电解电压为30 V、电解液为含有NH4F (0.5%,w/w)以及乙二醇和水(9:1,V/V)的混合溶液、阳极氧化时间为10 min时,制备的TiO2 NTAs/Ti电极在B-R缓冲溶液(pH=3~11)中具有最佳pH响应,灵敏度为(-55.17 ±0.28) mV/pH,相关系数(R2)>0.9966。常见离子对电极的影响可以忽略不计。制备的pH电极具有良好的稳定性,并成功用于维生素饮料和海水pH值的测定。

关键词:   二氧化钛, 纳米管, pH电极, 阳极氧化, 金属氧化物
Key words:   Titanium dioxide, Nanotube, pH electrode, Anodic oxidation, Metal oxide
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二氧化钛纳米管阵列/钛pH电极制备与表征

李振, 刘寒蒙, 姚志霞, 孙玉静, 李壮

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