About this Research Topic
Advanced oxidation processes (AOPs), as a clean and efficient approach to generate reactive oxygen-containing radicals for the elimination of recalcitrant organic pollutants, has been regarded as a promising strategy to deal with the ever-growing environmental pollution and the scarcity of freshwater resources that have resulted from rapid population growth and industrialization. Recently, the sulfate radical (SO4•−)-based AOPs system (SR-AOPs) has received increasing attention for the degradation of recalcitrant pollutants in water because of the strong oxidizing capability of SO4•− at wider pH ranges. Over the past few years, various transition metal-based materials have been studied as Fenton-like catalysts for PMS activation. Unfortunately, most of them suffer from the problems of metal ions leaching and low catalytic performance. The development of improved catalysts with adequate activity and stability is still a long-term goal to realize their practical application.
Over the past few years, various transition metal-based materials have been studied as Fenton-like catalysts for PMS activation. Unfortunately, most of them suffer from the problems of metal ions leaching and low catalytic performance. Alternatively, although a number of exciting advances have been achieved using N-doped graphene for PMS activation through a nonradical reaction process, the performances of such nonmetal-based catalysts are always depressed, and the development of improved catalysts with adequate activity and stability is still a long-term goal to realize their practical application.
Single-atom catalysts (SACs) with an atomically distributed active metal center has recently emerged as a new research frontier in various catalytic reactions for maximum atom efficiency due to the unique electronic property of a single metal active site. Currently, Li et al. first demonstrated single cobalt atoms anchored on porous N-doped graphene with high activity and stability for BPA removal, which opened up a new pathway to develop catalysts for SR-AOPs and expanded the applications of SACs.
In order to highlight the development of highly efficient catalysts for practical application of SR-AOPs, this Research Topic will focus on the advanced catalysts, as well as the catalytic mechanism insights in this field. We invite submissions of original research and review article. The areas to be covered may include, but are not limited to, the following fields:
1. Catalytic elimination of environmental pollutants. such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources
2. All aspects of preparation, characterization, activation, deactivation and regeneration of novel and commercially applicable environmental catalysts
3. Basic understanding of catalysts used in environmental pollution abatement.
Keywords: Fenton-like reaction, sulfate radical, Advanced oxidation processes, catalysts, catalytic mechanism
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.