今天，白色二氧化钛 (W-TiO 2 ) 是非常重要的光催化剂，因为它具有出色的应用，例如利用阳光生产 H 2以及从环境中去除有机污染物。二氧化钛在使用中具有成本效益，具有有用的化学和生物特性以及高氧化能力。但是，将二氧化钛用于光催化应用的显着缺点在于价带和导带之间的跃迁能隙。只有紫外光子可以取代 TiO 2价层电子，因为它们具有高能量范围，并且仅使用约 5% 的太阳辐射。为了解决这个问题，合成氢化二氧化钛或黑色二氧化钛（B-TiO 2) 已于 2011 年报道。二氧化钛的氢化可以改变纳米TiO 2 的化学、电子、结构和光学吸收域等多种性质，并扩展到红外区域。这些改进的性能导致了关于纳米黑色TiO 2 的新研究。有许多生产黑色 TiO 2 的实用方法，现在已经报道了黑色 TiO 2纳米材料在各个领域的大量应用，例如在癌症治疗的医学应用领域。本研究总结了合成黑色 TiO 2的新颖且有吸引力的方法和新的实际应用。

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Today, white Titania (W-TiO2) is very important photocatalyst because of its outstanding applications like production of H2 using the sunlight and also to remove organic contaminants from the environment. Titanium dioxide is cost-effective in usage with useful chemical and biological properties and high oxidizing power. But, the significant drawbacks of using Titania for photocatalysis applications is in the transition energy gap between valence and conduction bands. Only UV photons can displace TiO2 valence layer electrons because of their high energy range and only use about 5% of solar radiation. To address this problem, the synthesis of hydrogenated titanium dioxide or black titania (B- TiO2) has been reported in 2011. Hydrogenation of titania can change several properties such as chemical, electronic, structural and optical absorption domain of nano-TiO2 extended to the IR region. These improved properties have led to new researches about the nano-black TiO2. There are many practical methods to produce black TiO2 and nowadays numerous applications have been reported for black TiO2 nanomaterials in various fields for example, in the field of medical applications for cancer treatment. The present study summarizes the novel and attractive ways to synthesize and new practical applications of black TiO2.