The emergence of piezo-photocatalysis inaugurates a nascent approach aimed at mitigating the rapid recombination of electrons and holes, thus augmenting catalytic efficacy. This work endeavors to fabricate NaBiTiO (BNT) nanosphere powders through a simplified hydrothermal method, whereby precise control over the quantity of tetrabutyl titanate, a titanium source, is employed. The piezo-photocatalytic performance of BNT nanospheres is meticulously scrutinized through the degradation of Rhodamine B (RhB) at a concentration of 5 mg/L, utilizing ultrasonic vibration and UV–visible light irradiation. Remarkably, the appropriate oxygen vacancies exerts a profound impact on the efficiency of piezoelectric photocatalytic degradation. Among the investigated catalysts, The material with the best performance exhibits the highest rate of piezo-photocatalytic degradation, boasting a rate constant (k value) of 0.052 min. Furthermore, the BNT nanospheres exhibit commendable stability and reusability in the context of piezo-photocatalytic degradation. Elucidation of the piezo-photocatalytic mechanism of BNT nanospheres is attained through the identification of radicals and intermediates present in the degradation process. This research imparts invaluable guidance for the design and development of state-of-the-art and high-performance piezo-photocatalytic catalysts.

中文翻译：

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通过调节氧空位浓度提高Na0.5Bi0.5TiO3的压电光催化性能

压电光催化的出现开创了一种新兴方法，旨在减轻电子和空穴的快速复合，从而提高催化效率。这项工作致力于通过简化的水热法制造 NaBiTiO (BNT) 纳米球粉末，从而精确控制钛源钛酸四丁酯的数量。利用超声波振动和紫外可见光照射，通过降解浓度为 5 mg/L 的罗丹明 B (RhB)，对 BNT 纳米球的压电光催化性能进行了仔细检查。值得注意的是，适当的氧空位对压电光催化降解的效率产生深远的影响。在所研究的催化剂中，性能最好的材料表现出最高的压电光催化降解速率，速率常数（k值）为0.052 min。此外，BNT 纳米球在压电光催化降解方面表现出值得称赞的稳定性和可重复使用性。通过识别降解过程中存在的自由基和中间体，可以阐明 BNT 纳米球的压电光催化机制。这项研究为最先进的高性能压电光催化催化剂的设计和开发提供了宝贵的指导。