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Modified Working Electrode by Magnetite Nanocomposite for Electrochemical Sensor Application
Suhanto R.N.a, Rahmawati R.a,b, Setyorini D.A.a, Noviandri I.a, Suyatmana, Yuliarto B.a
a Department of Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b Department of Physics, Faculty of Sciences and Technology, UIN Sunan Kalijaga Yogyakarta, Yogyakarta, 55281, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© Published under licence by IOP Publishing Ltd.In this research, magnetite (Fe3O4) has been successfully composite with graphene by a sonochemical method. The formation of the nanocomposite was confirmed by X-ray diffraction (XRD). The XRD pattern showed the magnetic phase of crystalline Fe3O4that could be attributed to the cubic structure. However, the graphene peak did not appear in the XRD pattern of the nanocomposite. The crystallite sizes of the Fe3O4 nanoparticles were estimated about 10 nm. Furthermore, the morphology of the nanocomposite was investigated using scanning electron microscope (SEM). The SEM image showed the interaction and decoration of graphene sheets with Fe3O4.Meanwhile, the synthesized graphene-Fe3O4 nanocomposite can be separated by applied an external magnetic field, thus demonstrating the magnetic properties of the nanocomposite. A working electrode was fabricated by modified a surface of carbon paste electrode (CPE) with the graphene-Fe3O4 nanocomposite. The modified electrode was characterized using cyclic voltammetry (CV) to evaluate electrochemical properties. By Modifying the surface of the working electrode with graphene-Fe3O4 nanocomposite, it can be increased the oxidation and reduction peak current that refer to excellent electron transfer materials. Therefore, the results of this research showed that the use of the graphene-Fe3O4 nanocomposite is very feasible for electrochemical sensor.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Carbon paste electrode,Electron transfer material,External magnetic field,Fe3O4 nanoparticles,Modified electrodes,Oxidation and reduction,Sonochemical method,Working electrode[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]and sonochemical method,Electrochemical sensor,graphene,magnetite,nanocomposite[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1088/1757-899X/367/1/012054[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]