Nanotechnology Education and Research Center, South Ural State University, 454080 Chelyabinsk, Russia.
N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia.
Sensors (Basel). 2023 Jan 13;23(2):933. doi: 10.3390/s23020933.
Stable, water-soluble titanium complexed with mandelic acid was used as a precursor for titanium phosphorus double oxide obtained in hydrothermal conditions in the presence of phosphoric acid. Surprisingly, hydrolysis of organic complexes provided a microstructured sphere with narrow size distribution, low aggregation and a small fraction of morphological irregularities. Obtained microspheres had a complex structure comprised of flakes, whose size could be manipulated with temperature conditions. Samples were found to be electrochemically active against sulcotrione, a well-recognized herbicide. Electrochemical sensors based on the synthesized microspheres were successfully adapted for natural water reservoir analysis and exhibited low levels of detection of 0.61 µM, limit of quantification of 1.86 µM, wide dynamic linear range from 2 to 200 µM, good selectivity, excellent reproducibility and in-time stability.
稳定、水溶性的钛与扁桃酸形成的配合物被用作在水热条件下、存在磷酸时得到的钛磷双氧化物的前体。令人惊讶的是，有机配合物的水解提供了具有窄尺寸分布、低聚集和形态不规则性小分数的微结构化球体。所得到的微球具有复杂的结构，由薄片组成，其尺寸可以通过温度条件来控制。研究发现，这些样品对磺草酮具有电化学活性，磺草酮是一种公认的除草剂。基于合成的微球的电化学传感器成功地适应了天然水库的分析，并表现出低检测限为 0.61 µM、定量限为 1.86 µM、从 2 到 200 µM 的宽动态线性范围、良好的选择性、优异的重现性和及时的稳定性。
