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首页> 外文期刊>Journal of photochemistry and photobiology, C. Photochemistry reviews >Recent advancements in photocatalyst-based platforms for the destruction of gaseous benzene: Performance evaluation of different modes of photocatalytic operations and against adsorption techniques
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Recent advancements in photocatalyst-based platforms for the destruction of gaseous benzene: Performance evaluation of different modes of photocatalytic operations and against adsorption techniques

机译：基于光催化剂的抗破坏性气相苯的平台的最新进展：不同模式的光催化作用和吸附技术的性能评价

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摘要

The photocatalytic technique is a promising alternative option for the treatment of volatile organic compounds (VOCs) to replace conventional methods. The primary feature of photocatalysis is the generation of environmentally benign end products (water and carbon dioxide). Titanium dioxide (TiO2) has been the most frequently used photocatalyst, and the advent of TiO2-based composites and other novel materials has expanded the photocatalytic domain in terms of efficiency and visible-light operation. This review assesses the performance of recently developed photocatalysts in removal of gaseous benzene (as a model VOC). The applied photocatalytic systems were classified by mode of operation, i.e., a continuous or batch system. The results of diverse studies were compared and evaluated in terms of key performance metrics (e.g., space-time and quantum yield values) to learn more about the influence of inherent properties (e.g., surface chemistry, functionalities, and structure) and operational conditions (e.g., humidity and processing time) on the destruction of VOCs. Further, attempts are made to compare the performance of continuous-mode photocatalytic systems against an adsorption system in terms of space velocity. In addition, photothermal catalysis was discussed as a hybrid technology for future applications. The article also highlights the present obstacles and possible opportunities for the application of photocatalytic systems toward air quality management. (C) 2019 Elsevier B.V. All rights reserved.
机译：光催化技术是一种有希望的替代方案，用于治疗挥发性有机化合物（VOC）以取代常规方法。光催化的主要特征是生成环境良性终体产品（水和二氧化碳）。二氧化钛（TiO2）是最常用的光催化剂，基于TiO2的复合材料和其他新颖材料的出现在效率和可见光操作方面扩展了光催化结构域。该评价评估最近开发的光催化剂在去除气态苯（作为模型VOC）中的性能。所施加的光催化系统通过操作模式，即连续或批量系统进行分类。比较各种研究的结果，并在关键性能度量（例如，时空和量子产量值）方面进行评估，以了解有关固有性质的影响（例如，表面化学，功能和结构）和操作条件的影响例如，湿度和处理时间）对VOC的破坏。此外，尝试在空间速度方面比较连续模式光催化系统对吸附系统的性能。此外，讨论了光热催化作为未来应用的混合技术。本文还凸显了目前障碍和可能的光催化系统对空气质量管理的机会。 （c）2019年Elsevier B.V.保留所有权利。

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