Zuhra Zareen, Li Shuo, Xie Guanqun, Wang Xiaoxia
Department of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China.
School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
Molecules. 2023 Sep 30;28(19):6884. doi: 10.3390/molecules28196884.
Soot formation is an inevitable consequence of the combustion of carbonaceous fuels in environments rich in reducing agents. Efficient management of pollution in various contexts, such as industrial fires, vehicle engines, and similar applications, relies heavily on the subsequent oxidation of soot particles. Among the oxidizing agents employed for this purpose, oxygen, carbon dioxide, water vapor, and nitrogen dioxide have all demonstrated effectiveness. The scientific framework of this research can be elucidated through the following key aspects: (i) This review situates itself within the broader context of pollution management, emphasizing the importance of effective soot oxidation in reducing emissions and mitigating environmental impacts. (ii) The central research question of this study pertains to the identification and evaluation of catalysts for soot oxidation, with a specific emphasis on ceria-based catalysts. The formulation of this research question arises from the need to enhance our understanding of catalytic mechanisms and their application in environmental remediation. This question serves as the guiding principle that directs the research methodology. (iii) This review seeks to investigate the catalytic mechanisms involved in soot oxidation. (iv) This review highlights the efficacy of ceria-based catalysts as well as other types of catalysts in soot oxidation and elucidate the underlying mechanistic strategies. The significance of these findings is discussed in the context of pollution management and environmental sustainability. This study contributes to the advancement of knowledge in the field of catalysis and provides valuable insights for the development of effective strategies to combat air pollution, ultimately promoting a cleaner and healthier environment.
在富含还原剂的环境中，碳质燃料燃烧必然会产生 soot。在各种情况下，如工业火灾、车辆发动机及类似应用中，有效管理污染很大程度上依赖于随后 soot 颗粒的氧化。用于此目的的氧化剂中，氧气、二氧化碳、水蒸气和二氧化氮都已证明有效。本研究的科学框架可通过以下关键方面阐明：(i) 本综述将自身置于污染管理的更广泛背景中，强调有效 soot 氧化在减少排放和减轻环境影响方面的重要性。(ii) 本研究的核心研究问题涉及 soot 氧化催化剂的识别和评估，特别强调基于氧化铈的催化剂。提出这个研究问题是因为需要加深我们对催化机制及其在环境修复中的应用的理解。这个问题作为指导原则指导研究方法。(iii) 本综述旨在研究 soot 氧化中涉及的催化机制。(iv) 本综述强调基于氧化铈的催化剂以及其他类型催化剂在 soot 氧化中的功效，并阐明潜在的机制策略。在污染管理和环境可持续性的背景下讨论了这些发现的意义。本研究有助于催化领域知识的进步，并为制定有效的空气污染防治策略提供有价值的见解，最终促进更清洁、更健康的环境。
