Bismuth Titanite (Bi₄Ti₃O₁₂) platelets with surface defects were successfully synthesized via a simple ball milling route. The additive Li with strong reducibility stripped off the surface atoms from the (Bi₂O₂)²⁺ slabs and even (Bi₂Ti₃O₁₀)²⁻ perovskite layers, leaving abundant surface defects. The defect-rich Bi₄Ti₃O₁₂ platelets with a narrowed band gap achieved excellent degradability, capable of degrading Rhodamine B (RhB) completely within 25 min under visible light irradiation. The results of this study demonstrated the extraordinary photodegradation performance of micro-sized catalysts.

中文翻译：

---

实现富含表面缺陷的Bi ₄ Ti ₃ O ₁₂血小板的优异可见光光催化活性

通过简单的球磨工艺成功地合成了具有表面缺陷的铋钛矿（Bi ₄ Ti ₃ O ₁₂）薄片。具有强还原性的添加剂Li从（Bi ₂ O ₂）²⁺平板甚至（Bi ₂ Ti ₃ O ₁₀）^2-钙钛矿层剥离了表面原子，从而留下了大量的表面缺陷。富缺陷的Bi ₄ Ti ₃ O ₁₂带隙较窄的血小板具有出色的降解性，能够在可见光照射下在25分钟内完全降解若丹明B（RhB）。这项研究的结果证明了微尺寸催化剂的非凡的光降解性能。