Novel catalysts are of great interest for improved photocatalytic environmental remediation. Using a hydrothermal method, 0D/2D Bi3TaO7/Ti3C2 heterojunctions were designed rationally and characterized systematically as excellent photocatalysts for photocatalytic degradation. The hybrid catalyst exhibits superior performance in visible-light-driven photocatalytic degradation of methylene blue (about 99% degradation efficiency after 2 h) and excellent stability (up to 10 cycles) under visible light irradiation (300 W Xe lamp; λ > 420 nm; light intensity 150 mW cm-2). In addition, Bi3TaO7/Ti3C2 has a larger rate constant (0.032 min-1) than pristine Bi3TaO7 (0.006 min-1). Quantum yield (2.27 × 10-5 molecules/photon) and figure of merit (23.3) of the system were obtained, suggesting that our catalyst has potential for application. Both experimental and computational results indicate that synergistic effects between Bi3TaO7 and Ti3C2 improve photocatalytic performance by enhancing electron-hole pair separation, electronic transmission efficiency, and interfacial charge transfer. These findings contribute to the synthesis of efficient visible-light-driven Bi-based photocatalysts and to the understanding of photocatalytic degradation reactions.

中文翻译：

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Bi3TaO7 / Ti3C2异质结可增强光催化去除水中污染物的能力。

新型催化剂对于改善光催化环境修复具有极大的兴趣。使用水热法，合理设计了0D / 2D Bi3TaO7 / Ti3C2异质结，并系统地表征为光催化降解的优良光催化剂。该杂化催化剂在可见光驱动的亚甲基蓝光催化降解中表现出卓越的性能（2小时后降解效率约为99％），并且在可见光照射下（300 W Xe灯；λ> 420 nm）具有出色的稳定性（长达10个循环）。 ;光强度为150 mW cm-2）。此外，Bi3TaO7 / Ti3C2的速率常数（0.032 min-1）比原始Bi3TaO7（0.006 min-1）大。获得了系统的量子产率（2.27×10-5分子/光子）和品质因数（23.3），表明我们的催化剂具有应用潜力。实验和计算结果均表明，Bi3TaO7和Ti3C2之间的协同效应通过增强电子-空穴对分离，电子传输效率和界面电荷转移来改善光催化性能。这些发现有助于合成有效的可见光驱动的Bi基光催化剂，并有助于理解光催化降解反应。