Fabrication and Characterization of Hydrophobic Aerogels Containing Bacterial Cellulose Coated with Copper Species via Mild Reduction

• DOI: 10.32508/stdjet.v7i2.1339
• Publication Date: 2025-04-02T03:23:08Z
• Authors: Hà Vũ Lê; ; Hanh Huynh Mai Ng...; ; Trang Thi Phuong ...; ; Truc Thi Thanh Ng...; ; Khoi Dinh Dang; ; Khoa Dang Nguyen; ; Kien Anh Le; ; Hoan Tuan Phan
• Keywords: Characterization; Bacterial Cellulose

In this study, bacterial cellulose (BC) was coated with copper species via a room-temperature hydrazine-mediated reduction reaction of copper(II) acetate in suspension phase nata de coco, which treated by freeze-drying, yielding hydrophobic lightweight aerogels. Structural and textural characteristics the prepared aerogels were discovered using several techniques including X-ray diffraction (XRD), thermogravimetry analysis (TGA), water contact angle measurement isothermal nitrogen physisorption. detail, XRD results indicated formation metallic aerogel while high crystallinity remained unchanged. No oxidized phases detected material. Via TGA profiles, Cu loading determined to be range from 3.9 13.4 wt.%, depending on amount used for reaction. These values generally lower than theoretical contents probably due unexpected losses during preparation procedure. addition, increasing content BC led significant decrease specific surface area presence porous structure. On other hand, as expected, hydrophobicity significantly enhanced content. Indeed, Cu-coated (> 6.2 wt.%) hydrophobic, showing large water-contact up 138°. Therefore, resulting well interacted water-immiscible organic solvents diesel oil cyclohexane adsorption capacities varied 20 30 g/g. The successful fabrication upon simple modification abundant can introduce novel efficient biomass-based material treatments oil-based liquids aqueous environment.