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Low‐Cost and Environmental‐Friendly Kaolinite‐Intercalated Hybrid Material Showing Fast Formaldehyde Adsorbing Behavior
Author(s) -
Yang Hao,
Sun Xin,
Liu ShaoXian,
Liu JianLan,
Ren XiaoMing
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600217
Subject(s) - adsorption , formaldehyde , kaolinite , thermogravimetric analysis , chemistry , infrared spectroscopy , elemental analysis , volatility (finance) , environmentally friendly , nuclear chemistry , chemical engineering , inorganic chemistry , materials science , organic chemistry , mineralogy , ecology , financial economics , engineering , economics , biology
Formaldehydeis a widespread used chemical and its toxicity and volatility threaten seriously human health. Although the active carbon is a cheap and frequently used material for adsorption of formaldehyde indoor or inside new car, the physical adsorption needs too long time and the adsorbed formaldehyde is finally released in air. Herein we report an indeed low‐cost and environmental‐friendly formaldehyde adsorbent, which is made from the mineral kaolinite intercalated with natural amino acid L‐α‐alanine (the intercalated compound is abbreviated as K‐Ala). The hybrid K‐Ala was characterized by elemental analysis for C, H and N; thermogravimetric, infrared spectroscopy and powder x‐ray diffraction. Interestingly, the saturate adsorption is reached within six hours with the maximum adsorption amount of 45.6 milligram HCHO per gram of K‐Ala compared with commercial activated carbons that the adsorption capacity increase more than five times (7.62 mg/g). On the basis of DFT calculations, the mechanism is analyzed for the quick adsorption of formaldehyde.