Recently, carbon dioxide (CO 2 ) conversion into higher-value platform chemicals and synthetic fuels has drawn great attention as a result of global warming. Non-thermal plasma (NTP)-catalytic CO 2 conversion has emerged to significantly reduce the reaction temperature. However, this technology requires a paradigm shift in process design to enhance plasma-catalytic performance. CO 2 conversion using NTP and catalysts has great potential to increase reaction efficiencies due to the synergetic effects between the plasma and catalysts that can provide mutual improvement in their performances. It is crucial to present the recent progress in CO 2 conversion and utilization whilst specifying a research prospects framework and providing future research directions in both industries and laboratories.Herein, a review of encouraging research achievements in CO 2 conversion and utilization using NTP in recent years is provided. The topics reviewed in this work are recent progress in different NTP sources in relation to product selectivity, conversion, and energy efficiency; plasma-based CO 2 reactions and applications; CO 2 conversion integrated with CO 2 capture; and process development of NTP in terms of potential large-scale applications processes. The high market value of the possible products from the NTP process, including chemicals and fuels, make the commercialization of the process feasible. Developing a suitable catalyst with effective sensitivities and performance under intricate conditions can improve the selectivity of these carbon-based liquid chemicals. There is a need for more studies to be performed in this field.

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Iron ore sintering flue gas containing large amounts of volatile organic compounds (VOCs) can form secondary photochemical smog and organic aerosols, thus posing a serious threat to human health and the ecological environment. Catalytic combustion technology has been considered as one of the most prospective strategies for VOC elimination. This paper focuses on a review of studies on catalytic removal of typical VOCs (toluene) on transition metal oxide catalysts in recent years, with advances in single metal oxides, multi-oxide composites, and supported metal oxide catalysts. Firstly, the catalytic activities of a series of catalysts for toluene degradation are evaluated and compared, leading to an analysis of the key catalytic indicators that significantly affect the efficiency of toluene degradation. Secondly, the reaction pathway and mechanism of toluene degradation are systematically introduced. Considering the site space and investment cost, the conversion of VOC pollutants to harmless substances using existing selective catalytic reduction (SCR) systems has been studied with considerable effort. Based on the current development of simultaneous multi-pollutant elimination technology, the interaction mechanism between the NH3-SCR reaction and toluene catalytic oxidation on the surface is discussed in detail. Finally, views on the key scientific issues and the challenges faced, as well as an outlook for the future, are presented. This overview is expected to provide a guide for the design and industrial application of NO/VOC simultaneous removal catalysts.