Impact of fabrication method on the photocatalytic efficiency of PAN/SRTIO₃@AL composite nanofibers
Abdikarimova U. Serik A. Yessenkeldina D. Kuspanov Z. Baratov A. Umirzakov A. Daulbayev C.
October 2025Elsevier Ltd
Journal of Water Process Engineering
2025#78
This study compares two synthesis approaches for PAN/SrTiO₃@Al composites: electrospinning with thermal annealing (PAN/ASTO@cocat-ES) and hydrothermal modification of pre‑carbonized nanofibers (PAN/ASTO@cocat-HT). The PAN/ASTO@cocat-HT composite achieved 85.4 % tetracycline degradation and retained 72.7 % activity after seven reuse cycles. In addition, when tested in water from the Sorbulak Reservoir (Almaty, Kazakhstan), the composite ensured an efficiency of 86.2 %. Detailed analysis suggested that the high photocatalytic performance of PAN/ASTO@cocat-HT is likely associated with robust interfacial contact between the carbon matrix and SrTiO₃ particles modified with Al, Rh, Cr, and Co, which may facilitate charge transfer and reduce the probability of recombination. SrTiO₃ acts as the light-absorbing semiconductor, whereas the cocatalysts contribute to charge separation and direct the photogenerated carriers to active sites. These results indicate that the interaction between the semiconductor and carbon may play an important role in achieving efficient photocatalytic degradation of organic pollutants.
Electrospinning , Nanofibers , PAN , Photocatalyst , Tetracycline
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Satbayev University, Almaty, Kazakhstan
Electrochemical conversion and energy storage laboratory, Institute of Nuclear Physics, Almaty, Kazakhstan
Bes Saiman Group, Almaty, Kazakhstan
Institute of Physics and Technology, Almaty, Kazakhstan
Satbayev University
Electrochemical conversion and energy storage laboratory
Bes Saiman Group
Institute of Physics and Technology
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