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| Study on the Preparation of Carbon-based Aerogels from Old Newspaper and Its Adsorption Performance |
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| DOI：10.11981/j.issn.1000-6842.2018.02.23 |
| Key Words:carbon-based aerogels; old newspaper; absorption ability; hydrophobic |
| Fund Project:国家自然基金青年基金（31500493）；辽宁省教育厅一般项目（12015044）；制浆造纸工程国家重点实验室开放基金资助（201747）。 |
| Author Name | Affiliation | | LIU Zhen-zhen1 | 1. Liaoning Province Key Laboratory of Pulp and Paper Engineering， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | | GUO Yan-zhu1，2，* | 1. Liaoning Province Key Laboratory of Pulp and Paper Engineering， Dalian Polytechnic University， Dalian， Liaoning Province， 116034
2. State Key Laboratory of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guandong Province， 510640 | | WANG Xing1 | 1. Liaoning Province Key Laboratory of Pulp and Paper Engineering， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | | ZHOU Jing-hui1 | 1. Liaoning Province Key Laboratory of Pulp and Paper Engineering， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | | LI Hai-ming1 | 1. Liaoning Province Key Laboratory of Pulp and Paper Engineering， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | | SUN Guang-wei1 | 1. Liaoning Province Key Laboratory of Pulp and Paper Engineering， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 |
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| Abstract: |
| The carbon-based aerogels （CA） were prepared by freeze-drying and carbonization process using old newspaper as raw material. The structures and properties of the obtained CA were characterized by FT-IR， scanning electron microscopy （SEM）， X-ray diffraction （XRD）. The results showed that CA had a low density of 0.0348 g/cm3， excellent hydrophobicity with a water contact angle of 129.8°. The results of FT-IR analysis showed that the content of hydroxyl， alkyl， glycosidic bonds were decreased. The results of SEM showed that CA had a favorable porous structure with three-dimensional network and the width of fibers was about 8～10 μm. The results of XRD confirmed that the crystalline structure of CA was destroyed during the pyrolysis process and amorphous carbon was formed. The adsorption capacity of CA for organic solvents and oil was about 21～37 g/g. The CA adsorbed organic solvent or oil could be recycled by combustion and the recycled CA also exhibited excellent adsorption ability to hydrophobic solvents. After six cycles of adsorption/combustion process， the adsorption abilities of recycled CA for methanol and silicon oil were 83.9% and 86.4% of original adsorption abilities， respectively. |
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