Unlocking High-Throughput Plasma-Catalytic Low-Temperature Oxidation of n -Hexane over Single-Atom Ag 1 /MnO 2 Catalysts
Year: 2024
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide The total oxidation of n -hexane, a hazardous volatile organic compound (VOC) emitted by the pharmaceutical industry, presents a significant environmental challenge due to limited catalyst activity at low temperatures and poor stability at high temperatures. Here, we present a novel approach that overcomes these limitations by employing single-atom Ag 1 /MnO 2 catalysts coupled with nonthermal plasma (NTP). This strategy achieves exceptional performance in n -hexane oxidation at low temperatures, demonstrating 96.3% n -hexane removal and an energy yield of 74.1 g kW h –1 with negligible byproduct formation (O 3 < 5 ppm, NO x < 20 ppm). In situ characterization of the plasma-catalytic system coupled with theoretical calculations revealed a synergistic mechanism for n -hexane oxidation. Reactive species generated by the NTP initiate the breakdown of n -hexane into smaller fragments. These fragments are then preferentially adsorbed onto the atomic Ag sites due to their favorable energetics, facilitating their subsequent oxidation. The incorporation of single Ag atoms not only enhances the selective adsorption of these NTP-generated intermediates but also accelerates the reaction kinetics. This work demonstrates the potential of single-atom catalysts coupled with NTP for efficient and environmentally friendly removal of VOCs at low temperatures. This approach offers a promising strategy for mitigating industrial air pollution and achieving cleaner air quality.
Source: JACS Au
Authors: Zhiping Ye, Chuang Han, Shulin Yang, Yaolin Wang, Ke Wang, Anton Nikiforov, Jiade Wang, Rino Morent, Nathalie De Geyter, Xuming Zhang, Jun Chen, Mi Yan, Junhua Li, Xin Tu, Pengfei Xie
Institutions: Zhejiang University of Technology, Zhejiang University, University of Liverpool, Ghent University, Zhejiang Sci-Tech University, State Key Laboratory of Silicon Materials, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Tsinghua University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,500
Funders: Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, National Natural Science Foundation of China, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Engineering and Physical Sciences Research Council, National Key Research and Development Program of China, Natural Science Foundation of Zhejiang Province
OpenAlex ID: W4404644419