Boron nitride nanotubes (BNNTs) can be grown on stainless steel by annealing a mixture of diboron trioxide (B₂O₃) and boron (B) at 1200 °C to 1300 °C under ammonia (NH₃). In previously reported boron oxide chemical vapor deposition methods for the synthesis of BNNTs, diboron dioxide (B₂O₂) is generated in situ by the reaction of boron and metal oxides. In this study, we directly used a mixture of B₂O₃ and boron as boron sources, thereby, avoiding the use of metal containing species in the starting material. The concentration of B₂O₃ significantly influenced the formation, quality and quantity of BNNTs.

中文翻译：

---

由三氧化二硼和硼的混合物在不锈钢上生长的氮化硼纳米管

氮化硼纳米管（BNNT）可以通过在氨气（NH ₃）下于1200°C至1300°C下将三氧化二硼硼（B ₂ O ₃）和硼（B）的混合物退火在不锈钢上生长。在先前报道的用于合成BNNT的氧化硼化学气相沉积方法中，二氧化硼（B ₂ O ₂）是通过硼和金属氧化物的反应原位生成的。在这项研究中，我们直接使用B ₂ O ₃和硼的混合物作为硼源，从而避免了在起始原料中使用含金属的物质。B ₂ O ₃的浓度显着影响BNNTs的形成，质量和数量。