Preparation of Carbon Nanotube Composite and its Application to Selectively Reducing Phenolic Compounds in Cigarette Smoke

To selectively reduce the phenolic compounds in cigarette smoke,carbon nanotube composite(CNTM) was facilely synthesized through catalytic combustion from polypropylene,Ni2O3,and organic-modified montmorillonite.The synthesized CNTM was characterized by scanning electron microscopy,transmission electron microscopy,X-ray diffraction,Raman spectroscopy,X-ray photoelectron spectroscopy,Fourier transform infrared spectroscopy,thermal gravimetric analysis and BET surface area analyzer.The effect of CNTM,as a filter additive,on the removal of harmful components in mainstream cigarette smoke was investigated,and the selective adsorption mechanism of CNTM to phenols was deliberated.The results showed that:1) CNTM was mainly composed of multi-layer carbon nanotubes mingled with layers of montmorillonite flakes,and contained very little amorphous carbon and Ni element.2) CNTM presented meso-and macroporous structure with a specific surface area of 203.30 m²/g and total pore volume of 0.61 cm³/g.3) CNTM reduced the hazard index of cigarette by 16.7%,and its selective reduction rate to phenols in mainstream cigarette smoke reached 24.3%.4) With its unique structural character and the hexagonal arrays of its multi-layer namo tube,which contained rich and abundant chemical functional groups,CNTM presented excellent selective physisorption and chemisorption to phenolic compounds.