IMDEA Materials Institute, C/Eric Kandel, 2, 28906 Getafe, Madrid, Spain; Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, al. Piastów 45, 70-311 Szczecin, Poland.
IMDEA Materials Institute, C/Eric Kandel, 2, 28906 Getafe, Madrid, Spain; School of Materials Science and Engineering, Beihang University, 100191 Beijing, China.
Bioresour Technol. 2019 Jan;272:92-98. doi: 10.1016/j.biortech.2018.10.011. Epub 2018 Oct 5.
Functional carbon materials have been fabricated through simple and effective catalytic carbonization with waste coffee grounds (CGs) as carbon precursor and FeCl as catalyst. The effect of FeCl loading and carbonization temperature on carbon yield was investigated. The morphology and structure of as-synthesized carbons was characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and nitrogen isothermal adsorption/desorption measurement, respectively. Furthermore, the carbon materials showed high efficiency for the removal of methylene blue (MB, 653.6 mg g), methyl orange (MO, 465.8 mg g) and rhodamine B (RB, 366.1 mg g). More importantly, the carbon was magnetic, so it can be easily separated by a magnet and reused multiple times. This work not only exploited a low-cost and large-scale preparation method to synthesize functional carbon materials from bioresources, but also provided an eco-friendly and effective adsorbent in water purification applications.
通过简单有效的催化碳化作用，以废咖啡渣（CGs）为碳前体，FeCl 为催化剂，制备了功能性碳材料。研究了 FeCl 负载量和碳化温度对碳产率的影响。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X 射线衍射（XRD）、拉曼光谱、X 射线光电子能谱（XPS）和氮等温吸附/解吸测量分别对合成碳的形貌和结构进行了表征。此外，该碳材料对亚甲基蓝（MB，653.6mg/g）、甲基橙（MO，465.8mg/g）和罗丹明 B（RB，366.1mg/g）的去除效率很高。更重要的是，碳具有磁性，因此可以很容易地通过磁铁分离并重复使用多次。这项工作不仅利用低成本、大规模的方法从生物资源中合成功能性碳材料，而且还为水净化应用提供了环保且有效的吸附剂。
