Abstract

Composites of visible-light-active bamboo charcoal powder (BCP)/TiO₂ were fabricated by the straight calcination method by using TiCl₄ as the source of titanium and natural bamboo as the carbon source. The dispersion of TiO₂ nanoparticles was observed onto the surface of the BCP. The introduction of microstructure sizes of the bamboo powder played an important role in enhancing the optical properties of BCP/TiO₂ composites. The composites of BCP/TiO₂ showed the photocatalytic activities both under visible-light irradiation and UV irradiation. The methylene blue dye was used as the experimental check-up. The photodegradation reactions followed zero-order and pseudo-first-order kinetics. In the time duration of 100 min, about 58.31% and 95% of methylene blue were degraded by TiO₂ and BCP/TiO_2, respectively; 60 min more time was required by TiO₂ to achieve 93% of degradation. This suggests that addition of BCP helps in the reduction in time and also shows high durability after up to four cycles having the degradation efficiencies of 95%, 94.1%, 92.7% and 86.6%, respectively. Hence, this research could overlay in the domain of green energy.

中文翻译：

---

天然竹（Dendrocalamus strictus）和TiO 2的复合材料：在太阳光的直接照射下其光催化降解亚甲基蓝的潜力。

摘要

以TiCl ₄为钛源，天然竹为碳源，采用直接煅烧法制备了可见光活性竹炭粉（BCP）/ TiO ₂复合材料。观察到TiO ₂纳米颗粒分散在BCP的表面上。引入竹粉的微观结构尺寸在增强BCP / TiO ₂复合材料的光学性能方面起着重要作用。BCP / TiO ₂的复合材料在可见光和紫外线下均表现出光催化活性。亚甲基蓝染料用作实验检查。光降解反应遵循零级和拟一级动力学。在100分钟的时间内，TiO ₂和BCP / TiO ₂分别降解了约58.31％和95％的亚甲基蓝。TiO ₂需要60分钟以上的时间才能实现93％的降解。这表明添加BCP有助于减少时间，并且在经过多达四个循环后还显示出高耐久性，降解效率分别为95％，94.1％，92.7％和86.6％。因此，这项研究可能会覆盖绿色能源领域。