Bathla Aadil, Vikrant Kumar, Kukkar Deepak, Kim Ki-Hyun
Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea; University Centre for Research and Development, Chandigarh University, Gharuan, Mohali -140413, Punjab, India; Department of Biotechnology, Chandigarh University, Gharuan, Mohali - 140413, Punjab, India.
Adv Colloid Interface Sci. 2022 Jul;305:102696. doi: 10.1016/j.cis.2022.102696. Epub 2022 May 12.
Rapid industrial growth has been accompanied by the pollution of hazardous volatile organic pollutants (VOCs) in air. Among various options available for the treatment of VOCs, the use of metal oxide composites as photocatalysts has been adopted preferably due to their potential to induce the synergistic interactions between the metal nanoparticles (NPs) and metal oxides (especially titanium dioxide (TiO)). In this context, an in-depth review is offered to describe the fundamental mechanism of metal oxide-based photocatalysis for the oxidation of gaseous benzene as a model VOC. The discussion has been extended further to evaluate their performances in terms of key performance metrics (e.g., quantum yield (QY), space-time yield (STY), and figure of merit (FOM)). The TiO-based metallic bi-component photocatalysts (e.g., SrCeO/TiO) generally exhibited better photodegradation efficiency with enhanced light absorption capability than monometallic-TiO (e.g., Pd-TiO) composites or other modified photocatalysts (e.g., metal-organic framework (MOF)-based composites). Finally, we address the current challenges and future perspectives in this highly challenging research field.
快速的工业增长伴随着空气中有害挥发性有机污染物（VOCs）的污染。在处理VOCs的各种可用方法中，使用金属氧化物复合材料作为光催化剂已被优先采用，因为它们有可能在金属纳米颗粒（NPs）和金属氧化物（特别是二氧化钛（TiO₂））之间引发协同相互作用。在此背景下，本文进行了深入综述，以描述基于金属氧化物的光催化氧化气态苯（作为典型VOC）的基本机制。讨论进一步扩展到根据关键性能指标（例如量子产率（QY）、时空产率（STY）和品质因数（FOM））评估它们的性能。基于TiO₂的双组分金属光催化剂（例如SrCeO₃/TiO₂）通常比单金属TiO₂（例如Pd-TiO₂）复合材料或其他改性光催化剂（例如金属有机框架（MOF）基复合材料）表现出更好的光降解效率和增强的光吸收能力。最后，我们阐述了这个极具挑战性的研究领域当前面临的挑战和未来展望。
