In Situ Growth of Carbon Nanotubes on Carbon Foam for Enhanced Oil Adsorption
This work presents a facile approach to grow carbon nanotubes (CNTs) on the surface of carbon foams (CFs) for the fabrication of hierarchical CNTs/CF composites, which exhibit enhanced oil adsorption capability. The preparation of CFs is carried out by using commercially available polyurethane (PU) foams as hard template and resol as carbon precursor. Fe/Mg/Al layered double hydroxide (LDHs) is used as catalyst precursor for the efficient growth of CNTs on CFs via chemical vapor deposition (CVD), in which CNTs are controllably grown onto the strut of CFs. The presence of CNTs in the CFs can significantly improve the hydrophobicity of the composites and enable the selective separation of oil from water with the combination of hydrophobicity and capillary action. Such well-designed hierarchical nanostructures are benefit for maximum utilization of cell structure and surface property of the composites and display good oil adsorption performance. The synthesis procedure paves the way for the exploitation of the CFs as adsorbent for the removal of spill oil and environmental protection.
Laijiu Zheng, Shin-ichi Kuroda, Huawu Liu, Bing Du, Ju Wei and Yuping Zhao
J. J. Liang et al., "In Situ Growth of Carbon Nanotubes on Carbon Foam for Enhanced Oil Adsorption", Applied Mechanics and Materials, Vols. 423-426, pp. 130-134, 2013