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Air Purification: Control of Volatile Organic Compounds and Carbon Dioxide

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: 31 May 2025 | Viewed by 848

Special Issue Editor

School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
Interests: environmental chemistry; atmospheric VOCs management; agricultural soil remediation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Volatile organic compounds (VOCs) and carbon dioxide (CO2) emitted from both anthropogenic and natural sources pose significant health risks and environmental impact, while CO2 plays an important role in driving global warming. The effective control and purification of VOCs and CO2 are essential for creating healthier indoor environments, mitigating outdoor air pollution, and addressing climate change.

This Special Issue focuses on the latest advances, technologies, and strategies in air purification to manage VOCs and CO2. Topics include, but are not limited to, innovative adsorption materials, catalytic oxidation methods, photocatalysis, biofiltration, and advanced membrane technologies.

We invite contributions from researchers, practitioners, and policymakers to share original research and review articles. This platform aims to foster collaboration and innovation to address the challenges of VOC and CO2 management in diverse environments.

Dr. Hui Ding
Guest Editor

Manuscript Submission Information

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Keywords

  • volatile organic compounds (VOCs)
  • CO2 capture and utilization
  • air purification
  • indoor and outdoor air quality
  • catalysis
  • adsorption

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Published Papers (1 paper)

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Research

16 pages, 8820 KiB  
Article
Understanding the Role of Active Lattice Oxygen in CO Oxidation Catalyzed by Copper-Doped Mn2O3@MnO2
by Hao Zhang, Tan Meng, Min Zhang, Pengyi Zhang, Peizhe Sun, Huinan Li and Yangyang Yu
Molecules 2025, 30(4), 865; https://doi.org/10.3390/molecules30040865 - 13 Feb 2025
Viewed by 567
Abstract
Although the hopcalite catalyst, primarily composed of manganese oxide and copper oxide, has been extensively studied for carbon monoxide (CO) elimination, there remains significant potential to optimize its structure and activity. Herein, Cu-doped Mn3O2@MnO2 catalysts featuring highly exposed [...] Read more.
Although the hopcalite catalyst, primarily composed of manganese oxide and copper oxide, has been extensively studied for carbon monoxide (CO) elimination, there remains significant potential to optimize its structure and activity. Herein, Cu-doped Mn3O2@MnO2 catalysts featuring highly exposed interfacial regions were prepared. The correlation between interfacial exposure and catalytic activity indicates that the interfacial region serves as the active site for CO catalytic oxidation. The characteristic adsorption of CO by Cu species significantly enhances the catalytic activity of the catalyst. And XPS and ICP-OES analyses reveal that Cu ions coexist in both the interlayer and lattice of δ-MnO2. Furthermore, XPS analysis was employed to quantify the average oxidation state (AOS) of Mn and the molar ratios of oxygen species, demonstrating that both surface-adsorbed oxygen and surface lattice oxygen act as reactive oxygen species in the catalytic reaction, playing a crucial role in CO oxidation. Notably, the surface reactive oxygen species influence the adsorption of CO onto Cu species, and the replenishment of these reactive species is identified as the rate-limiting step in the CO catalytic oxidation process. Full article
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