Photoelectrochemical detection of ultra-trace fluorine ion using TiO2 nanorod arrays as a probe
A photoelectrochemical (PEC) method based on the etching reaction of F ions on the surface of TiO2 nanorod arrays (TNRs) was proposed for the high sensitivity and selectivity detection of F ions. With the increase of F ion concentration, the surface etching reaction on TNR becomes more intense, resulting in the increased number of surface active sites, the reduction of electron transfer resistance, and the increase of photocurrent density. The prepared TNRs as a PEC probe exhibits a good linear relationship between photocurrent increment and the logarithm of F ion concentration in the range from 0.05 to 1000 nM with an ultra-trace detection limit of 0.03 nM for F ion detection.
研究领域:
分析化学
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环境监测
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纳米材料
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电化学传感
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生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）