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 Synthesis and preparation of hydrophobic CNTs-coated melamine formaldehyde foam by green and simple method for efficient oil/water separation
Tác giả hoặc Nhóm tác giả: The-Anh Phan, Kim-Hoang Dang, Lam Nguyen-Dinh
Nơi đăng: CHEMISTRY & CHEMICAL TECHNOLOGY (JOURNAL); Số: Vol. 14, No. 4;Từ->đến trang: 531–537;Năm: 2020
Lĩnh vực: Khoa học công nghệ; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
Herein, we present a green, simple and cost-effective method to change hydrophilic melamine formaldehyde (MF) foam to hydrophobic carbon nanotubes (CNTs) coated MF foam through an immersion process. The MF foam was produced from the MF resin which was synthesized in a laboratory by a condensation reaction between melamine and formaldehyde under alkaline condition with a molar ratio of melamine to formaldehyde of 1:3. The MF foam has an open-cell structure with the average pore diameter of 350 mm, density of 25 kg·m-3 and porosity of 98 %. The as-prepared CNTs-coated MF foam exhibits high sorption capacity (23–66 g/g) for oils and organic solvents, good recyclability and high selectivity.
ABSTRACT
Herein, we present a green, simple and cost-effective method to change hydrophilic melamine formaldehyde (MF) foam to hydrophobic carbon nanotubes (CNTs) coated MF foam through an immersion process. The MF foam was produced from the MF resin which was synthesized in a laboratory by a condensation reaction between melamine and formaldehyde under alkaline condition with a molar ratio of melamine to formaldehyde of 1:3. The MF foam has an open-cell structure with the average pore diameter of 350 mm, density of 25 kg·m-3 and porosity of 98 %. The as-prepared CNTs-coated MF foam exhibits high sorption capacity (23–66 g/g) for oils and organic solvents, good recyclability and high selectivity.
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