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Absorption and Photocatalytic Degradation of Machine Oil by Exfoliated Graphite‐Supported Nanometer TiO 2 Material
Author(s) -
Hong CAO,
Enbao MA,
Xuehua WANG,
Jiazang CHEN,
Xiaobei BIN
Publication year - 2006
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.2006.tb00244.x
Subject(s) - nanometre , photocatalysis , materials science , graphite , anatase , adsorption , chemical engineering , degradation (telecommunications) , absorption (acoustics) , visible spectrum , composite number , saturation (graph theory) , nanotechnology , composite material , organic chemistry , chemistry , catalysis , optoelectronics , telecommunications , mathematics , combinatorics , computer science , engineering
Abstract By loading nanometer anatase onto exfoliated graphite with the sol‐gel method, exfoliated graphite‐TiO 2 composite (EG‐TiO 2 ) can be prepared, which can adsorb oil and can also degrade oil. In a technologic condition for preparing EG‐TiO 2 , the impregnated number of times is the most important factor to influence oil‐adsorbing capability, that is, when the impregnated number of times increases, the amount of saturation‐adsorbed oil decreases. The study of EG‐TiO 2 photocatalytic degradation of machine oil based on the weight‐loss method and infrared spectrum method indicates that EG‐TiO 2 has obvious effect of photocatalytic degradation for machine oil. Its performance is superior to pure nanometer TiO 2 powder because nanometer TiO 2 in EG‐TiO 2 has three‐dimension laminar structure and comparatively high adsorption capability.