Performance and mechanism of the controllable gaseous ClO2 generation with modified sepiolite-based porous materials

IF 5.3 2区地球科学 Q2 CHEMISTRY, PHYSICAL

Applied Clay Science Pub Date : 2025-01-04 DOI:10.1016/j.clay.2024.107692

Nana Chang , Wanting Li , Mingming Fei , Min Tie , Hao Ling , Yunlei Zhao , Xiayi Hu

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Abstract

ClO₂ is a strong oxidizing fungicide widely used to protect people from bacterial diseases. It is of great urgency to develop a safe, fast and easy-to-use ClO₂-based antimicrobial material to safeguard people's lives and health. In this work, the cheap natural porous ore sepiolite is adopted and modified by FeCl₃ and AlCl₃ as acidic activators. Several characterizations suggested the unchanged morphology and bond structure but the enlarged pore size improved the ClO₂-releasing amount, which could reach to 13,903 μg with 25 % FeCl₃-sepiolite and 12,670 μg with 15 % AlCl₃-sepiolite. The separated FeCl₃/AlCl₃-sepiolite and NaClO₂-sepiolite effectively extended the ClO₂ releasing life. Meanwhile, increased temperature and humidity were beneficial for enhancing the ClO₂ releasing amount. The mechanism investigation confirmed the ambient moisture promoted the contact to achieve ClO₂ generation reactions. The above results showed that the well-developed metal chloride modification in sepiolite exhibits a good prospects in terms of industry and environment.

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来源期刊

Applied Clay Science 地学-矿物学

CiteScore

10.30

自引率

10.70%

发文量

289

审稿时长

39 days

期刊介绍： Applied Clay Science aims to be an international journal attracting high quality scientific papers on clays and clay minerals, including research papers, reviews, and technical notes. The journal covers typical subjects of Fundamental and Applied Clay Science such as: • Synthesis and purification • Structural, crystallographic and mineralogical properties of clays and clay minerals • Thermal properties of clays and clay minerals • Physico-chemical properties including i) surface and interface properties; ii) thermodynamic properties; iii) mechanical properties • Interaction with water, with polar and apolar molecules • Colloidal properties and rheology • Adsorption, Intercalation, Ionic exchange • Genesis and deposits of clay minerals • Geology and geochemistry of clays • Modification of clays and clay minerals properties by thermal and physical treatments • Modification by chemical treatments with organic and inorganic molecules(organoclays, pillared clays) • Modification by biological microorganisms. etc...