Efficient Oxidative Removal of Indoor Formaldehyde Using Functionalized Activated Alumina

• DOI: 10.1021/acsami.4c15334
• Publication Date: 2025-01-15T07:44:41Z
• Authors: Ting Wang; Yu Zhang; Yufei Yuan; Peng Chen; Zhaohui Yang; Tianshuo Zhao; Yonghong Qin; Chaopeng Fu; Jiao Zhang

Formaldehyde (HCHO) has become a significant indoor air pollutant, arising from the widespread use of decorative and construction materials. Adsorption is most convenient method for HCHO removal. However, current adsorption limited by low capacity desorption. Herein, activated alumina (γ-Al2O3) loaded with permanganate was proposed efficient oxidative removal HCHO. The results demonstrate that permanganate-containing alumina-based pellets (PAP) 75% (PAP-75) displayed highest 10,800 μg g–1. This high mainly attributed to presence numerous pore structures within pellets, good dispersion on surface inside spheres, abundant surface-active sites, porosity. kinetics explains chemisorption, intraparticle diffusion, film diffusion are primary rate-controlling steps. study provides an effective strategy further improving materials