| Title | Effects of activation temperature and time on porosity features of activated carbons derived from lemon peel and preliminary hydrogen adsorption tests |
|---|---|
| ID_Doc | 9423 |
| Authors | De Rose, E; Bartucci, S; Bonaventura, CP; Conte, G; Agostino, RG; Policicchio, A |
| Title | Effects of activation temperature and time on porosity features of activated carbons derived from lemon peel and preliminary hydrogen adsorption tests |
| Year | 2023 |
| Published | |
| Abstract | Lemon peels, a common biomass waste, have an interesting composition in terms of cellulose and mineral salts that makes them good precursors for activated carbon production processes. From a circular economy perspective, this work highlights the possibility of turning a waste material into a new resource. The resulting nanostructures show interesting performance in terms of specific surface area and total pore volume, with excellent grade of microporosity, that make them suitable for various applications ranging from supercapacitors, sensors, gases separation and storage, etc. The last, and in particular hydrogen storage, represents the most interesting one. In this study the development of activated carbon through pyrolysis method, consisting of carbonization in inert ambient and subsequent physical activation in oxidizing atmosphere is reported. Influence of synthesis parameters on the porosity formation was investigated with the aim of textural properties optimi-zation. All produced samples were initially characterized both morphologically and crystallographycally. Then, textural and adsorption properties were evaluated through volumetric apparatus. The experimental results show improvement of both textural and adsorption properties as function of synthesis parameters, developing adsorbent materials with high fraction of micropores (similar or equal to-84 %), specific surface area (similar or equal to-500 m2/g) and hydrogen uptake of 0.93 wt% at 77 K and 1 bar. |
| https://doi.org/10.1016/j.colsurfa.2023.131727 |
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