An eco-friendly low-temperature synthetic approach towards micro-pebble-structured GO@SrTiO3 nanocomposites for the detection of 2,4,6-trichlorophenol in environmental samples


The low-temperature synthesis of the graphene oxide–wrapped perovskite-type strontium titanate nanocomposites (GO@SrTiO3-NC) is reported for the electrochemical sensing of organochlorine pesticide 2,4,6-trichlorophenol (TCP) detection. The as-prepared GO@SrTiO3 nanocomposites provide a large surface area, excellent conductivity, and active sites, which are more favorable to the catalysis of TCP. The synergistic effect between the GO and the perovskite SrTiO3 results in the extended working range of 0.01 to 1.47 and 1.47 to 434.4 μM with a very low detection limit of 3.21 nM towards TCP detection. Moreover, the prepared sensor possessed good selectivity and long-term stability. Finally, the practical applicability of the sensor was tested in environmental samples of river water and soil, exhibiting adequate recovery values.

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This project was supported by the Ministry of Science and Technology (MOST 107-2113-M-027-005-MY3), Taiwan (ROC). The authors received support from King Saud University, Riyadh, Saudi Arabia (Researchers Supporting Project number RSP-2020/247).

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Correspondence to Shen-Ming Chen.

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Akilarasan, M., Tamilalagan, E., Chen, SM. et al. An eco-friendly low-temperature synthetic approach towards micro-pebble-structured GO@SrTiO3 nanocomposites for the detection of 2,4,6-trichlorophenol in environmental samples. Microchim Acta 188, 72 (2021).

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  • GO@SrTiO3 nanocomposites
  • TCP detection
  • Organochlorine pesticides
  • Environmental samples
  • Electrochemical sensor