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<p>L-arginine was immobilized onto cotton fabrics via a pad-dry-cure process to prepare catalytic textiles for the hydrolysis of dimethyl 4-nitrophenyl phosphate (DMNP), a simulant of organophosphorus nerve agents. Direct L-arginine treatment showed limited surface immobilization and only marginal improvement in DMNP degradation. To overcome this limitation, cotton was first functionalized with 3-aminopropyltrimethoxysilane (APTMS) and then treated with L-arginine to promote covalent immobilization. The APTMS/L-arginine-treated cotton with a 1:1 (wt%:wt%) ratio and 1 wt% add-on exhibited the highest catalytic activity, achieving 53% DMNP degradation after 48&#xa0;h. Its pseudo-first-order rate constant was 5.07 and 2.09 times higher than those of untreated cotton and APTMS-treated cotton, respectively. Compared with guanidinylated chitosan-treated cotton, AP-Arg-CO showed approximately twofold higher DMNP degradation under identical conditions. These results suggest that APTMS-assisted L-arginine immobilization is a simple and effective strategy for preparing functional cotton textiles with catalytic detoxification capability.</p>

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Arginine-Derived Guanidine-Functionalized Cotton Fabrics for Detoxification of Organophosphorus Nerve Agent Simulants

  • 期刊论文

  • 发表日期：

    2026年6月27日

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  • Jiseop Bae,
  • Woong Kwon,
  • Daeun Kim,
  • Chaeyeon Kim,
  • Euigyung Jeong

摘要

L-arginine was immobilized onto cotton fabrics via a pad-dry-cure process to prepare catalytic textiles for the hydrolysis of dimethyl 4-nitrophenyl phosphate (DMNP), a simulant of organophosphorus nerve agents. Direct L-arginine treatment showed limited surface immobilization and only marginal improvement in DMNP degradation. To overcome this limitation, cotton was first functionalized with 3-aminopropyltrimethoxysilane (APTMS) and then treated with L-arginine to promote covalent immobilization. The APTMS/L-arginine-treated cotton with a 1:1 (wt%:wt%) ratio and 1 wt% add-on exhibited the highest catalytic activity, achieving 53% DMNP degradation after 48 h. Its pseudo-first-order rate constant was 5.07 and 2.09 times higher than those of untreated cotton and APTMS-treated cotton, respectively. Compared with guanidinylated chitosan-treated cotton, AP-Arg-CO showed approximately twofold higher DMNP degradation under identical conditions. These results suggest that APTMS-assisted L-arginine immobilization is a simple and effective strategy for preparing functional cotton textiles with catalytic detoxification capability.