TY - GEN
T1 - Effect of Surfactant in Modification of Graphite into Graphene Nanosheets and its Applications as Rhodamine B Adsorbent
AU - Jun, Alif Raditia Irvany
AU - Dimonti, Lizbeth Cantik Christina
AU - Bakri, Ridla
AU - Yunarti, Rika Tri
N1 - Funding Information:
This research was funded by the Korea Institute of Science and Technology (KIST) School Partnership Project 2021.
Publisher Copyright:
© 2022 American Institute of Physics Inc.. All rights reserved.
PY - 2022/8/18
Y1 - 2022/8/18
N2 - Coffee is one of the plantation products with high economic value and can be used as a strategic commodity for developing the country's economy. However, the coffee ground waste contains organic compounds that are harmful to the environment. The use of coffee grounds waste as a carbon material precursor has been widely carried out because coffee grounds have a fairly high carbon content. In this study, coffee grounds from pyrolysis produced graphite coffee grounds. The resulting coffee grounds graphite is then used as the main precursor in the modification of graphite into graphene nanosheets using the liquid exfoliation method with the help of surfactants, where in the process, two types of surfactants were used, namely anionic (SDS) and cationic (CTAB). The modified graphene nanosheets were then characterized using Raman spectroscopy, XRD, and SEM. Raman spectroscopic characterization results proved that there is a change in intensity in the D and G bands, which indicates a change in the structure of the graphite material. The SEM characterization results showed a morphological change from the amorphous structure of graphite to a thin layer as in graphene. BET analysis was carried out and showed a change in the sample's surface area and pore size. The application of Graphene nanosheets produced on the adsorption of Rhodamine B compounds showed an increase in adsorption before modification and after modification to graphene, which was originally 18.74 % at 5 ppm to 54.14% (G-25 Coffee/SDS), 22.67% (G -25 Coffee/CTAB).), 76.17% (GS Coffee/SDS), and 66.56% (GS Coffee/CTAB).
AB - Coffee is one of the plantation products with high economic value and can be used as a strategic commodity for developing the country's economy. However, the coffee ground waste contains organic compounds that are harmful to the environment. The use of coffee grounds waste as a carbon material precursor has been widely carried out because coffee grounds have a fairly high carbon content. In this study, coffee grounds from pyrolysis produced graphite coffee grounds. The resulting coffee grounds graphite is then used as the main precursor in the modification of graphite into graphene nanosheets using the liquid exfoliation method with the help of surfactants, where in the process, two types of surfactants were used, namely anionic (SDS) and cationic (CTAB). The modified graphene nanosheets were then characterized using Raman spectroscopy, XRD, and SEM. Raman spectroscopic characterization results proved that there is a change in intensity in the D and G bands, which indicates a change in the structure of the graphite material. The SEM characterization results showed a morphological change from the amorphous structure of graphite to a thin layer as in graphene. BET analysis was carried out and showed a change in the sample's surface area and pore size. The application of Graphene nanosheets produced on the adsorption of Rhodamine B compounds showed an increase in adsorption before modification and after modification to graphene, which was originally 18.74 % at 5 ppm to 54.14% (G-25 Coffee/SDS), 22.67% (G -25 Coffee/CTAB).), 76.17% (GS Coffee/SDS), and 66.56% (GS Coffee/CTAB).
UR - http://www.scopus.com/inward/record.url?scp=85137477029&partnerID=8YFLogxK
U2 - 10.1063/5.0104715
DO - 10.1063/5.0104715
M3 - Conference contribution
AN - SCOPUS:85137477029
T3 - AIP Conference Proceedings
BT - 9th International Conference of the Indonesian Chemical Society, ICICS 2021
A2 - Savalas, Lalu Rudyat Telly
A2 - Hadisaputra, Saprizal
PB - American Institute of Physics Inc.
T2 - 9th International Conference of the Indonesian Chemical Society: Toward a Meaningful Society, ICICS 2021
Y2 - 11 August 2021 through 13 August 2021
ER -