Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (6): 1704.doi: 10.7503/cjcu20200864

• Inorganic Chemistry • Previous Articles     Next Articles

Synthesis and VOCs Adsorption Properties of Hollow Carbon Nanospheres

WANG Hongning1,2, HUANG Li1, SONG Fujiao3, ZHU Ting2, HUANG Weiqiu2, ZHONG Jing1, CHEN Ruoyu1()   

  1. 1.Jiangsu Key Laboratory of Fine Petrochemical Engineering,Changzhou University,Changzhou 213164,China
    2.Jiangsu Key Laboratory of Oil?Gas Storage and Transportation Technology,Changzhou University,Changzhou 213016,China
    3.Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province,Yancheng Institute of Technology,Yancheng 224051,China
  • Received:2020-12-14 Online:2021-06-10 Published:2021-06-08
  • Contact: CHEN Ruoyu E-mail:chry@cczu.edu.cn

Abstract:

Under alkaline conditions and without using surfactants, primary spherical siliceous particles were produced through St?ber 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.

Key words: Hollow carbon nanosphere, Volatile organic compound(VOC), Adsorption, Desorption, Stability

CLC Number: 

TrendMD: