Abstract Porous carbon nanosheets were prepared by the carbonization of paper flower via chemical and physical activation. The structural properties of the as-prepared carbons were characterized using the techniques, such as X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, N 2 sorption isotherms and X-ray photoelectron spectroscopy (XPS), while the related morphological analyses were conducted using scanning/transmission electron microscopy (SEM/TEM). The obtained carbons exhibit a high specific surface area up to 1801 m 2 g −1 with a robust porous graphitic carbon layer structure, which provides the merits for potential application in energy storage and dye removal. We carried out potentiostatic and galvanostatic measurements using a three-electrode cell in 1.0 M H 2 SO 4 aqueous electrolyte and achieved a specific capacitance of 118, 109.5, 101.7, 93.6, and 91.2 F g −1 at 1, 2, 4, 8 and 12 A g −1 , respectively. The stability at 12 A g −1 was tested to reach 10,000 cycles with capacity retention of around 97.4%. We have demonstrated that the paper flower-derived carbons at activation temperature 800 °C (PFC-800) can be used as a promising electrode material in supercapacitor. PFC-800 can also serve as an efficient sunset yellow dye removal, showing the maximum adsorption capacity for sunset yellow ( Q 0 , 273.6 mg g −1 ).

中文翻译：

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纸花衍生的高电容多孔碳通过化学和物理活化用于可持续应用

摘要 通过化学和物理活化对纸花进行碳化制备多孔碳纳米片。使用X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）、拉曼光谱、N 2 吸附等温线和X射线光电子能谱等技术对制备的碳的结构性质进行了表征。 XPS)，而相关的形态分析是使用扫描/透射电子显微镜 (SEM/TEM) 进行的。获得的碳具有高达 1801 m 2 g -1 的高比表面积，具有坚固的多孔石墨碳层结构，这为在能量存储和染料去除方面的潜在应用提供了优势。我们在 1 中使用三电极电池进行了恒电位和恒电流测量。0 MH 2 SO 4 水性电解质并在1、2、4、8和12 A g -1 下分别实现了118、109.5、101.7、93.6和91.2 F g -1 的比电容。测试在 12 A g -1 下的稳定性达到 10,000 次循环，容量保持率约为 97.4%。我们已经证明，活化温度为 800 °C 的纸花衍生碳（PFC-800）可用作超级电容器中的一种有前途的电极材料。PFC-800 还可以作为一种有效的日落黄染料去除剂，显示出对日落黄的最大吸附容量 (Q 0 , 273.6 mg g -1 )。我们已经证明，活化温度为 800 °C 的纸花衍生碳（PFC-800）可用作超级电容器中的一种有前途的电极材料。PFC-800 还可以作为一种有效的日落黄染料去除剂，显示出对日落黄的最大吸附容量 (Q 0 , 273.6 mg g -1 )。我们已经证明，活化温度为 800 °C 的纸花衍生碳（PFC-800）可用作超级电容器中的一种有前途的电极材料。PFC-800 还可以作为一种有效的日落黄染料去除剂，显示出对日落黄的最大吸附容量 (Q 0 , 273.6 mg g -1 )。