Cooperative and Bifunctional Adsorbent‐Catalyst Materials for In‐situ VOCs Capture‐Conversion

Abstract

Volatile organic compounds (VOCs) are gases that are emitted into the air from products or processes and are major components of air pollution that significantly deteriorate air pollution and seriously affect human health. Different types of metals, metal oxides, mixed‐metal oxides, polymers, activated carbons, zeolites, MOFs and mixed‐matrixed materials have been developed and used as adsorbent or catalysts for diversified VOC capture, removal, and destruction. In this comprehensive review, we first discuss the general classification of VOC removal materials and processes and outline the historical development of bifunctional and cooperative adsorbent‐catalysts for the removal of volatile organic compounds (VOCs) from air. Subsequently, particular attention is devoted to design strategies for cooperative adsorbent‐catalysts, along with detailed discussions on the latest advances on these bifunctional materials, reaction mechanisms, long‐term stability, and regeneration for VOCs removal processes. Finally, challenges and future opportunities for the environmental implementation of these bifunctional and cooperative adsorbent‐catalysts are identified and outlined with the intent of providing insightful guidance on the design and fabrication of more efficient materials and systems for VOCs removal in the future.

Assessing Hydrolysis Performance of Ce(OH)4@PIM-1 Composites Functionalized with Amidoxime, Aldoxime, and Carboxylate Groups Toward Dimethyl 4-Nitrophenylphosphonate, a Nerve Agent Simulant

“…Chemical warfare agents (CWAs) are extremely toxic substances known to cause mass destruction and fatalities, and in many cases, exposure to CWAs often leads to death. − These chemicals are typically categorized into various classes based on their physiological effects as choking, blister, blood, and nerve agents. Among these, nerve agents, primarily organophosphorus compounds, pose a significant threat as they irreversibly inhibit acetylcholinesterase activity in the human nervous system .…”

Liquid-Phase Adsorption of Dimethyl Methylphosphonate on Poly(ether imide) and its Metal Hydroxide-Integrated Composites

“…In recent years, polymers have gained significant attention as potential adsorbents for DMMP and other simulants due to their adaptable structures, versatile functionalization possibilities, and ease of processability. Notably, organic compounds with hydrogen bond donors have shown efficacy in selectively adsorbing DMMP through hydrogen bond interactions. − Among these materials, poly­(ether imide) (PEI) or Ultem can potentially be a promising candidate for DMMP or CWA adsorption and detoxification . Ultem’s inherent shape-memory properties allow it to return to a predefined shape after deformation, a significant attribute for adaptive filtration systems. , This combined with its self-healing capabilities extends its longevity and performance under challenging conditions.…”