Photoelectrochemical Detection of Calcium Ions Based on Hematite Nanorod Sensors.
Photoelectrochemical Detection of Calcium Ions Based on Hematite Nanorod Sensors.
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DOI：
10.1021/acsanm.2c03978
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发表时间：
2022-11-25
影响因子：
5.9
通讯作者：
Krause, Steffi
中科院分区：
文献类型：
--
作者：
Zhou, Bo;Jiang, Yunlu;Guo, Qian;Das, Anirban;Sobrido, Ana Belen Jorge;Hing, Karin A.;V. Zayats, Anatoly;Krause, Steffi
关键词：
α-FE2O3（赤铁矿）薄膜已被证明是具有良好稳定性和高空间分辨率的光电化学成像的强大传感器底物。与先前描述的赤铁矿膜，良好的稳定性和出色的空间潜在的成像应用的分辨率。传统上用传感器材料检测钙离子。
α-Fe2O3 (hematite) thin films have been shown to be a robust sensor substrate for photoelectrochemical imaging with good stability and high spatial resolution. Herein, one-dimensional (1D) hematite nanorods (NRs) synthesized via a simple hydrothermal method are proposed as a substrate which provides nanostructured surfaces with enhanced photocurrent responses compared to previously described hematite films, good stability, and excellent spatial resolution for potential imaging applications. The photoelectrochemical sensing capability of hematite NRs was demonstrated by a high pH sensitivity without modification. The modification of the hematite NRs with a thin poly(vinyl chloride) (PVC)-based ion-selective film allowed highly reversible amperometric detection of calcium ions with sensor materials traditionally employed in potentiometric devices.
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