| Title |
Synthesis and characterization of porous silica and composite films for enhanced CO2 adsorption: A circular economy approach |
| ID_Doc |
5468 |
| Authors |
Huang, TT; Rahmadiawan, D; Shi, SC |
| Title |
Synthesis and characterization of porous silica and composite films for enhanced CO2 adsorption: A circular economy approach |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.jmrt.2024.08.003 |
| Abstract |
This study explores the synthesis and application of carbon-negative technology that leverage circular economy and environmentally friendly methodologies. Porous silica using plant-derived silica sources and self-assembled lignin templates were prepared, achieving an impresive surface area of up to 104.76 m2/g. 2 /g. Additionally, we prepared porous composite films via a freeze-drying process incorporating polyvinyl alcohol (PVA). These films demonstrated enhanced tensile properties, with a tensile strength reaching 285.72 kPa. Notably, the film surfaces engaged in a third-body tribology mechanism, which endowed them with excellent abrasion resistance and a low friction coefficient. The specific surface area of the films was measured at 20.15 m2/g, 2 /g, making them ideal substrates for CO2 2 adsorption functionalization. The functionalized films showcased outstanding CO2 2 adsorption capabilities, with a maximum uptake of 29.38 mg/g. Furthermore, they retained over 90% of their adsorption capacity after five adsorption/desorption cycles. Under high CO2 2 conditions, these composite films combine the desirable attributes of both solid and liquid adsorbents-high surface area, low volatility, and adsorption stability-contributing significantly to greenhouse gas mitigation and the pursuit of carbon neutrality. |
| Author Keywords |
CO 2 adsorption; Porous silica; PVA; Lignin; Composite |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001291040600001 |
| WoS Category |
Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering |
| Research Area |
Materials Science; Metallurgy & Metallurgical Engineering |
| PDF |
https://doi.org/10.1016/j.jmrt.2024.08.003
|