# Textile functionalized by metal-organic cages for the capture and degradation of chemical warfare agents

A. Legrand, Elise Cape, Pauline Hardy, Manuela Ferreira, Christine

Campagne, Thierry Loiseau, Christophe Volkringer

► To cite this version:

A. Legrand, Elise Cape, Pauline Hardy, Manuela Ferreira, Christine Campagne, et al. Textile func-tionalized by metal-organic cages for the capture and degradation of chemical warfare agents. 2025 French MOFs, COFs and Porous Polymers Conference, Hélène BRAULT; Thomas DEVIC; Stéphane DIRING; Pascaline PRE; Xavier PY, Jun 2025, Nantes (France), France. hal-05372873

HAL Id: hal-05372873

https://hal.science/hal-05372873v1

Submitted on 19 Nov 2025

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# Textile functionalized by metal-organic cages for the capture and degradation of chemical warfare agents

Alexandre Legrand,ª Elise Cape,ª Manuela Ferreira,ᵇ Pauline Hardy,ª Christine Campagne,ᵇ Thierry Loiseau,ª and Christophe Volkringerª

E-mail: alexandre.legrand@univ-lille.fr

For more than ten years, the world has seen a resurgence in the number of armed conflicts and an increase in terrorist risks.[1] This threat is reflected in particular by the use of old and new generation chemical weapons. Among these chemical warfare agents (CWA) used are nerve agents (Sarin gas), blisters (Yperite), or suffocants (phosgene). Civilian or military personal protective equipment (PPE) developed to date generally offers passive protection (capture). A transition to active protection (degradation) is particularly interesting, especially if it provides improved protection while maintaining comfort, lightness, washability, mechanical characteristics, IR stealth, and fire protection. Farah has pioneered this field of research by integrating MOFs onto textile composites for the degradation of CWA.[2] This research aims to develop a textile functionalized by Zr-based metal organic cages (MOCs) capable of capturing and degrading model toxic agents of the NRBC type. This very recent class of materials has many advantages (compared to zeolites, activated carbons, and MOFs), particularly due to their solubility.[3] However, several scientific challenges remain in particular regarding the **integration of MOCs into textiles** as no studies have explored their deposition on textile fibers. Their nanoparticle nature (10⁻⁹ m) should simplify this integration compared to conventional porous materials (MOFs, zeolites). Another improvement is necessary to **enhance the strength of functionalized textiles**. Unlike microparticulate materials (10⁻⁶ m), nanoscale MOCs could offer better abrasion resistance. Here we demonstrated that the solubility of Zr-based MOC ensure (i) their efficient deposition on textile fiber by a one pot synthesis method, by impregnation or by spray dryer technique (Figure 1), (ii) the capture and degradation of model toxic agents, and (iii) the excellent compatibility with natural textile fibers tested. The resistance (mechanical and aging) of the functional textile was evaluated by aging studies, to obtain a fiber maintaining its degradation capacities under rigorous conditions (UV, H₂O, temperature, abrasion, perspiration, etc.). This compromise between efficiency and textile properties leads us closer to active protection for PPE.

<figure><img src="image_2.png" /><figcaption>**Fig. 1.** (Left) Conversion rate of simulant CWA (DMNP) as function of time using ZrMOCs as catalyst. (Right) Elemental analysis on SEM images of textile fiber integrating MOCs.</figcaption></figure>

## References

[1] ACLED Conflict Index. ACLED. https://acleddata.com/acled-conflict-index-mid-year-update-2023/

[2] Ma, K.; Cheung, Y. H.; Kirlikovali, K. O.; Wang, X.; Islamoglu, T.; Xin, J. H.; Farha, O. K. *Acc. Mater. Res.* **2023**, *4* (2), 168–179.

[3] Lee, S.; Jeong, H.; Nam, D.; Lah, M. S.; Choe, W. *Chem. Soc. Rev.* **2021**, *50*

<footnote>ª Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France</footnote>

<footnote>ᵇ Univ. Lille, Univ. Lille, ENSAIT, ULR 2461-GEMTEX-Génie et Matériaux Textiles, F-59000 Lille, France</footnote>