基于分子印迹透明 TiO2 薄膜的高性能非酶压电传感器用于尿素检测。
A high-performance nonenzymatic piezoelectric sensor based on molecularly imprinted transparent TiO2 film for detection of urea.
机构信息
Institute of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China.
Institute of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
出版信息
Biosens Bioelectron. 2015 Dec 15;74:85-90. doi: 10.1016/j.bios.2015.06.022. Epub 2015 Jun 19.
Transparent photocatalytic surfaces are of ever increasing importance for the enhancement of the photocatalytic efficiency. Here, the highly ordered transparent TiO2 nanotube arrays were prepared by the anodization and thermal annealing of titanium layer deposited onto the glass substrate, and a novel nonenzymatic piezoelectric sensor was developed for urea detection based on the modification of molecularly imprinted TiO2 thin film onto transparent TiO2 nanotube arrays. The performance of the fabricated sensor was evaluated and the results indicated that the sensor exhibited high sensitivity in urea detection, with a linear range from 0.04 to 120 μM and a limit of detection of 0.01 μM. Moreover, the sensor presented outstanding selectivity while used in coexisting systems containing various interferents with high concentration. The analytical application of the urea sensor confirmed the feasibility of urea detection in urine sample.
透明光催化表面对于提高光催化效率具有越来越重要的意义。在这里，通过在玻璃基底上沉积的钛层的阳极氧化和热退火制备了高度有序的透明 TiO2 纳米管阵列，并基于透明 TiO2 纳米管阵列上修饰分子印迹 TiO2 薄膜，开发了一种用于尿素检测的新型非酶压电传感器。评估了所制备传感器的性能，结果表明，该传感器在尿素检测中表现出高灵敏度，线性范围为 0.04 至 120 μM，检测限为 0.01 μM。此外，该传感器在含有高浓度各种干扰物的共存体系中使用时表现出出色的选择性。尿素传感器的分析应用证实了在尿样中检测尿素的可行性。
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