Xiong Jinyan, Zhang Mengmeng, Cheng Gang
College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, Wuhan Textile University, Wuhan 430073, PR China.
School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Donghu New & High Technology Development Zone, Wuhan 430205, PR China.
J Colloid Interface Sci. 2020 Nov 1;579:872-877. doi: 10.1016/j.jcis.2020.06.103. Epub 2020 Jun 30.
Solar-driven CO photoreduction into fuels has great potential in addressing the environmental and energy crisis. Heterophase TiO has attracted increasing attention in photoenergy applications owing to its fascinating properties, but much more attention has been paid on photodegradation and photocatalytic water splitting than that of photocatalytic CO reduction. Herein, anatase-rutile heterophase TiO nanoparticles with oxygen vacancy (TiO) were successfully synthesized by involving proper amounts of polyols (EG, DEG, TEG, etc.) into the reaction system. The heterophase TiO nanoparticles could accelerate the electron-hole separation and exhibit superior photocatalytic activity for reducing CO into methane. This work offers an alternative approach to simply fabricate TiO-based heterophase photocatalyst towards efficient CO photoreduction.
太阳能驱动的将CO光还原为燃料在解决环境和能源危机方面具有巨大潜力。异相TiO由于其迷人的特性在光能源应用中受到越来越多的关注，但相比于光催化CO还原，更多的注意力集中在光降解和光催化水分解上。在此，通过将适量的多元醇（乙二醇、二甘醇、三甘醇等）引入反应体系，成功合成了具有氧空位的锐钛矿-金红石异相TiO纳米颗粒（TiO）。这些异相TiO纳米颗粒能够加速电子-空穴分离，并在将CO还原为甲烷方面表现出优异的光催化活性。这项工作提供了一种简单制备TiO基异相光催化剂以实现高效CO光还原的替代方法。
