Abstract：
Piezo-photocatalysis combines photocatalysis and piezoelectric effects to enhance catalytic efficiency by creating an internal electric field in the photocatalyst, improving carrier separation and overall performance. This study presents a high-performance piezo-photocatalyst for efficient dye degradation using a synergistic barium titanate (BTO)-MXene composite. The composite was synthesized via a facile method, combining the unique properties of BTO nanoparticles with the high conductivity of MXene. The structural and morphological analysis confirmed the successful formation of the composite, with well-dispersed BTO nanoparticles on the MXene surface. The piezo-photocatalytic activity of the composite was evaluated using a typical dye solution (Rhodamine B: RhB) under ultraviolet irradiation and mechanical agitation. The results revealed a remarkable enhancement in dye degradation (90 % in 15 min for piezo-photocatalysis) compared to individual stimuli (58.2 % for photocatalysis and 95.8 % in 90 min for piezocatalysis), highlighting the synergistic effects between BTO and MXene. The enhanced catalytic performance was attributed to the efficient charge separation and transfer facilitated by the composite\'s structure, leading to increased reactive species generation and dye molecule degradation. Furthermore, the composite exhibited excellent stability and reusability, showcasing its potential for practical applications in wastewater treatment. Overall, this work represents a promising strategy for designing high-performance synergistic catalysts, addressing the pressing need for sustainable solutions in environmental remediation.
摘要：
压电光催化结合了光催化和压电效应，通过在光催化剂中产生内部电场来提高催化效率，改善载波分离和整体性能。这项研究提出了一种高性能的压电光催化剂，用于使用协同钛酸钡（BTO）-MXene复合材料进行高效染料降解。该复合材料是通过简单的方法合成的，将BTO纳米粒子的独特性质与MXene的高电导率相结合。结构和形态分析证实了复合材料的成功形成，在MXene表面上具有良好分散的BTO纳米颗粒。在紫外线照射和机械搅拌下，使用典型的染料溶液（罗丹明B：RhB）评估了复合材料的压电光催化活性。结果表明，与单个刺激（光催化为58.2％，压电催化为90分钟）相比，染料降解显着增强（压电光催化在15分钟内为90％），强调BTO和MXene之间的协同效应。增强的催化性能归因于有效的电荷分离和转移促进复合材料的结构，导致反应性物种产生增加和染料分子降解。此外，复合材料表现出优异的稳定性和可重用性，展示了其在废水处理中的实际应用潜力。总的来说,这项工作代表了设计高性能协同催化剂的有希望的策略，解决环境修复中对可持续解决方案的迫切需要。
