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  • Role of ▫$Bi3^{+}$▫ ion substitution on the piezocatalytic degradation performance of lead-free ▫$BaTi0_{89}Sn_{0.11}O_3$▫ at low vibrational energy
    Touili, Salma ...
    Harnessing low ultrasonic vibration energy to initiate piezocatalytic-based reactions is increasingly becoming a significant focus due to the current environmental energy crisis. In this study, we ... report on the potential of heterovalent ion substitution in improving piezocatalytic degradation of Rhodamine B dye (RhB) under the application of low-power ultrasonic vibration. For this purpose, bismuth ions Bi3+ are substituted into the lead-free ferroelectric BaTi0·89Sn0·11O3 (BTSn11-xBi, x = 0, 0.02, 0.04) submicrocubes synthesized using sol-gel method. The structural, morphological, optical and piezocatalytic properties of the prepared materials appear to be significantly influenced by the substituting content. Compared to pure BTSn11 and BTSn11-0.04Bi, BTSn11-0.02Bi exhibits the lowest band gap energy value of 3.22 eV, the smallest particle size value of 283 nm, the strongest piezoelectric current of about 8 μA/cm2, and the lowest required applied field for piezoresponse force microscopy hysteresis loops. The degradation efficiency and the kinetic rate constant are substantially higher for BTSn11-0.02Bi, indicating its enhanced piezocatalytic efficiency. Total organic carbon (TOC) measurements revealed good RhB mineralization using BTSn11-xBi piezocatalysts. Furthermore, the BTSn11-0.02Bi sample demonstrates good reusability and stability by maintaining effective RhB dye degradation for five consecutive cycling tests. These findings suggest that the BTSn11-0.02Bi piezocatalytic system holds significant potential for environmental remediation applications.
    Vir: Ceramics International [Elektronski vir]. - ISSN 1873-3956 (Vol. 50, iss. 17, Part A, 2024, str. 29437-29447)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2024
    Jezik - angleški
    COBISS.SI-ID - 202692355

    Povezava(-e):

    https://www.sciencedirect.com/science/article/pii/S0272884224021175
    DOI

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