The Effect of Addition Fe 3 O 4 on the rGO/Fe 3 O 4 Composite on Glucose Biosensor Performance

• Published in: Journal of physics. Conference series Vol. 1491; no. 1; p. 12059
• Main Authors: Mufida, R Y, Kusumawati, D H
• Format: Journal Article
• Language: English
• Published: 01.03.2020
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1491/1/012059

Abstract The development of composites as biosensors is very broad, one of them is biosensors to absorb glucose. Composite materials characteristic as biosensors must fulfill the criteria including nanomaterials that have magnetic properties, electrical conductivity, and good catalytic properties. One of the composites that fulfill those criteria is rGO/Fe 3 O 4 . By varying the addition of Fe 3 O 4 in the making of rGO/Fe 3 O 4 composites, the composition of composites that have the most effective performance in absorbing glucose will be known. The variation of Fe 3 O 4 addition in this study is 0.1 gram - 0.5 gram, with 0.5 gram of RGO. The characteristics of rGO, Fe 3 O 4 and the rGO/Fe 3 O 4 composite are known by the XRD and FTIR analysed based on relevant previous studies. Glucose biosensor absorbance was tested by UV-Vis, a composite with mass variations of Fe 3 O 4 0.1 gram, 0.2 gram, 0.3 gram, 0.4 gram, and 0.5 gram. Peak absorption of the composite of 0.1 gram Fe 3 O 4 shows high glucose concentration, it can be seen that the composite does not absorb glucose properly. The 0.2 gram composite has the lowest absorption peak so that this composite is the best biosensor. Because with the addition of Fe 3 O 4 mass shows the peak absorption is also higher. So, composites have a maximum limit in absorbing glucose.