| Autor: |
Wenxiang Jing, Chai Yang, Shuang Luo, Xiaoyan Lin, Min Tang, Renhong Zheng, Dongming Lian, Xuegang Luo |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Polymers; Volume 14; Issue 5; Pages: 860 |
| ISSN: |
2073-4360 |
| DOI: |
10.3390/polym14050860 |
| Popis: |
The present study demonstrated a freeze-drying-carbonization method to synthesize silver nanoparticle-modified bamboo-based carbon aerogels to remove formaldehyde. The bamboo-based carbon aerogel (BCA) has the advantages of controllable pore size and rich oxygen-containing groups, which can provide a good foundation for surface modification. BCA can greatly enhance the purification of formaldehyde by loading silver nanoparticles. The maximum adsorption capacity of 5% Ag/BCA for formaldehyde reached 42 mg/g under 25 ppm formaldehyde concentration, which is 5.25 times more than that of BCA. The relevant data were fitted by the Langmuir model and the pseudo 2nd-order model and good results were obtained, indicating that chemical absorption occurred between the carbonyl of formaldehyde and the hydroxyl of BCA. Therefore, silver nanoparticle-modified bamboo-based carbon aerogels play a positive role in the selective removal of formaldehyde. Silver nanoparticles promoted the activation of oxygen and strengthened the effect of BCA on HCHO adsorption. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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