PREPARASI DAN KARAKTERISASI GRAFENA OKSIDA TEREDUKSI DARI GRAFIT SERBUK DENGAN PEMBANDING KARBON AKTIF SERBUK MENGGUNAKAN METODE HUMMER
Daftar Isi:
- In this research, two graphene oxide (GO) synthesis processes were done, the first process wos synthesis of graphite oxide and the second wos exfoliating graphite oxide into graphene oxide by ultrasonication of graphit oxide. This research uses a variety of synthetic raw materials in the form of Graphite and Activated Carbon. The results obtained from this research are SEM, XRD, FT-IR, electrical conductivity and bandgap energy. The morphology of graphite with 30.000 magnification has shown the shaped of layers such as pieces and graphite oxide images with magnification 2.000 times has fewer layers and folds. The morphology of activated carbon with magnification 3.000 times is unreachable amount and, the frequency of activated carbon with 10.000 magnification as pore but uneven. Graphit diffractogram of XRD shows an angle of 2θ = 24.5°, graphite oxide shows the diffraction peaks experience widening and decreases in peak intensity angles 2θ = 10.26o and 2θ = 42.76o, active carbon shows that the degree of crystallinity of activated carbon is still quite low which can seen from the peak width around 2θ = 26° and the activated carbon oxide has a peak intensity of angle 2θ = 26.3° which is caused by the increasing order arrangement between the active carbon layer. FT-IR graphite spectrum were two peaks which are at 3400 cm-1 for the -OH and 1640 cm-1 bonds for the conjugated C=C bond and the graphite oxide spectrum shows the functional group in the C-O epokside group at the 1043 cm-1 bond and 1727 cm-1 C=C bond. The active carbon spectrum indicates the presence of C-H vibrations as indicated by the presence of absorbing bands in the regions of wave numbers 1396 and the activated carbon oxide indicates a high number of sharp peaks in the fingerprint region. The highest electrical conductivity value is 2,06 x 10-3, which wos graphite. While the transparent electrode band gap energy which has the highest band gap energy wos activated carbon oxide (KAO) which is 1,90.