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8359031 
Journal Article 
中空碳纳米球的制备及VOCs吸附性能 
Wang, H; Huang, L; Song, F; Zhu, T; Huang, W; Zhong, J; Chen, R 
2021 
1 
Gaodeng Xuexiao Huaxue Xuebao / Chemical Journal of Chinese Universities
ISSN: 0251-0790 
Higher Education Press Limited Company 
42 
6 
1704-1715 
Chinese 
Under alkaline conditions and without using surfactants, primary spherical siliceous particles were produced through Stöber method with tetraethyl orthosilicate(TEOS) and tetrapropyl orthosilicate(TPOS) as silica sources, then phenolic resin-silica composites were obtained by co-condensation of phenolic resin(isobenzene diphenol and formaldehyde) and the hydroxyl groups of silica. Hollow carbon nanospheres(HCNSs) were obtained after high temperature carbonization and acid etching of the phenolic resin-silica composites. By adjusting the molar ratio of TEOS/TPOS, a series of HCNSs with good monodispersity and adjustable particle sizes and wall thicknesses was obtained. The particle sizes and wall thicknesses are in the range of 280-430 nm and 15-63 nm, respectively. HCNS synthesized only with TPOS as silica source(HCNS-0/4) has a larger particle size(426 nm), wall thickness(63 nm), higher specific surface area(1216 m2/g) and pore volume(0.508 cm3/g), and the best VOCs adsorption performance. For HCNS-0/4, the static n-hexane, toluene and oil vapor adsorption capacities are 2.02, 1.42 and 0.926 g/g, respectively, and the dynamic n-hexane and toluene adsorption capacities are 2.01 and 1.37 g/g, respectively, which are much higher than those of commercial activated carbon. © 2021, Editorial Department of Chem. J. Chinese Universities. All right reserved. 
Adsorption; Desorption; Hollow carbon nanosphere; Stability; Volatile organic compound(VOC)