Abstract In this work, the commercial BaTiO3 crystal was cut into the same wafers along (101) crystal plane. These wafers were poled under various poling fields to study the effect of electric poling on the pyroelectric catalysis performance during the process of dye decomposition. Under 140 cold-hot (28 - 60 °C) cycles, the dye decomposition ratio using the unpoled BaTiO3 catalyst is close to 0, whereas it reaches ~ 56% using the BaTiO3 poled under a poling field of ~5.00 kV/mm. The poling treatment shows a great influence on the pyroelectric catalysis since it directly affects the number of charges generated on the surface of BaTiO3 crystal under the external temperature variation excitation. The generation of these middle product hydroxyl radicals further proves the reaction mechanism of the pyroelectric catalysis. The good catalysis and recyclability performance suggests the poled BaTiO3 pyroelectric crystal is an potential material in dye wastewater remediation through utilizing room-temperature thermal energy.

中文翻译：

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铁电BaTiO3晶体热电催化的增强：电极化的作用机制

摘要 在这项工作中，将商业化的 BaTiO3 晶体沿（101）晶面切割成相同的晶片。这些晶片在各种极化场下极化，以研究电极化对染料分解过程中热电催化性能的影响。在 140 次冷热 (28 - 60 °C) 循环下，使用未极化 BaTiO3 催化剂的染料分解率接近 0，而使用在 ~5.00 kV/mm 极化场下极化的 BaTiO3 达到 ~ 56%。极化处理对热释电催化有很大影响，因为它直接影响在外部温度变化激发下 BaTiO3 晶体表面产生的电荷数量。这些中间产物羟基自由基的产生进一步证明了热电催化的反应机理。