Microspherical Titanium-Phosphorus Double Oxide: Hierarchical Structure Development for Sensing Applications
Elena Korina,
Anton Abramyan,
Oleg Bol’shakov,
Vyacheslav V. Avdin,
Sladjana Savić,
Dragan Manojlović,
Vesna Stanković,
Dalibor M. Stanković
Affiliations
Elena Korina
Nanotechnology Education and Research Center, South Ural State University, 454080 Chelyabinsk, Russia
Anton Abramyan
Nanotechnology Education and Research Center, South Ural State University, 454080 Chelyabinsk, Russia
Oleg Bol’shakov
Nanotechnology Education and Research Center, South Ural State University, 454080 Chelyabinsk, Russia
Vyacheslav V. Avdin
Nanotechnology Education and Research Center, South Ural State University, 454080 Chelyabinsk, Russia
Sladjana Savić
Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
Dragan Manojlović
Nanotechnology Education and Research Center, South Ural State University, 454080 Chelyabinsk, Russia
Vesna Stanković
Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
Dalibor M. Stanković
Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
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.
