Inhibition effect and mechanism of mesoporous silica hollow nanospheres on asphalt VOCs

被引：22
作者：
Shu, Benan [1 ]
Wu, Shaopeng [1 ]
Li, Chao [1 ]
Long, Yongshuang [1 ]
Liu, Quantao [1 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Hubei, Peoples R China
来源：
EMERGING MATERIALS RESEARCH | 2019年 / 8卷 / 02期
关键词：
material characterisation; materials science; nanomaterials; VOLATILE ORGANIC-COMPOUNDS; ACTIVE-CARBON FILLER; ROOFING FUMES; REMOVAL; SPHERES; MICROSPHERES; ADSORPTION; BITUMEN; IONS;
D O I：
10.1680/jemmr.18.00102
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, mesoporous silica hollow nanospheres (MSHSs) with continuously distributed pore diameters were simply synthesized through the hydrothermal method. Then, the effect of MSHSs on inhibition of asphalt volatile organic compounds (VOCs) was studied by using pyrolysis-gas chromatography/mass spectrometry (GC-MS). In addition, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy and the Brunauer-Emmett-Teller method were conducted to analyze the inhibition mechanism. GC-MS results showed that the addition of MSHSs could significantly reduce the emission of asphalt VOCs. Temperature influenced the emission amount of asphalt VOCs. The adsorption efficiencies of MSHSs for alkanes, hydrocarbon derivatives and polycyclic aromatic hydrocarbons are different. The inhibition mechanism indicated that the reduction of emissions of asphalt VOCs is a result of physical adsorption, rarefied concentration adsorption and chemical adsorption caused by MSHSs.
引用
收藏
页码：283 / 289
页数：7
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