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All Journal Jurnal Rekayasa Proses Communications in Science and Technology Jurnal Rekayasa Proses Jurnal Rekayasa Proses
Haryo Satriya Oktaviano
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, PO Box BLS 21 Yogyakarta, 55281
Chemical Engineering, Chemistry & Bioengineering Education Engineering Social Sciences

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Carbon composite of NiO hydrothermal impregnation from sugarcane bagasse and its electrochemical properties Nasti, Al Nadine De; Siburian, Kyfti Yolanda; Sembiring, Abraham Danofan; Kristianto, Hans; Susanti, Ratna Frida; Oktaviano, Haryo Satriya; Nugroho, Agung
Jurnal Rekayasa Proses Vol 17, No 2 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.88210

Abstract

Sugarcane bagasse (SB) can synthesize activated carbon (AC) through a two-step calcination process at calcination at 400oC and activation at 800oC. NaOH 0.1 M is used to activate the pre-carbonized sample in the activation step. The AC samples undergo hydrothermal impregnation with nickel oxide (NiO) at 110°C. The X-ray diffraction (XRD) pattern and Energy dispersive X-ray spectroscopy (EDX) confirmed the presence of NiO after this process. Scanning Electron Microscope (SEM) indicates the presence of pore structures in the sample morphology. A three-electrode system with 1 M Na2SO4 as an electrolyte was employed to assess the electrochemical properties. The specific capacitance for activated carbon derived from SB stands at 89.53 F/g at 0.05 A/g current density, while after impregnation with NiO, it increases to 250.53 F/g at the same current density. The results demonstrate the possibility of activated carbon from sugarcane bagasse waste composited with NiO as supercapacitor electrodes.
Study of green reductant effects of highly reduced graphene oxide production and their characteristics Chasanah, Uswatul; Trisunaryanti, Wega; Triyono; Oktaviano, Haryo Satriya; Santoso, Iman; Fatmawati, Dyah Ayu
Communications in Science and Technology Vol 7 No 2 (2022)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.7.2.2022.906

Abstract

The study of the green reductant effects to produce reduced graphene oxide (rGO) has been completed successfully. The reduction of graphene oxide (GO) was carried out chemically using various reductants such as ascorbic acid (rGO-AA), gallic acid (rGO-AG), and trisodium citrate (rGO-NS). The GO was prepared using the Tour method at a temperature of 65 ? for 6 hours with potassium permanganate: graphite weight ratio 1:3.5. The results showed that rGO-AA had the highest electrical conductivity value of 755.70 S/m, with characteristics such as a surface area of 255.93 m2/g, a pore volume of 0.61 cm3/g, an average pore diameter of 7.10 nm, ID/IG ratio of 1.93, and three graphene layers in the material nanostructure stack. Therefore, it can be concluded that the reduction of GO with ascorbic acid (rGO-AA) is the most effective in producing rGO.
Carbon composite of NiO hydrothermal impregnation from sugarcane bagasse and its electrochemical properties Nasti, Al Nadine De; Siburian, Kyfti Yolanda; Sembiring, Abraham Danofan; Kristianto, Hans; Susanti, Ratna Frida; Oktaviano, Haryo Satriya; Nugroho, Agung
Jurnal Rekayasa Proses Vol 17, No 2 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.88210

Abstract

Sugarcane bagasse (SB) can synthesize activated carbon (AC) through a two-step calcination process at calcination at 400oC and activation at 800oC. NaOH 0.1 M is used to activate the pre-carbonized sample in the activation step. The AC samples undergo hydrothermal impregnation with nickel oxide (NiO) at 110°C. The X-ray diffraction (XRD) pattern and Energy dispersive X-ray spectroscopy (EDX) confirmed the presence of NiO after this process. Scanning Electron Microscope (SEM) indicates the presence of pore structures in the sample morphology. A three-electrode system with 1 M Na2SO4 as an electrolyte was employed to assess the electrochemical properties. The specific capacitance for activated carbon derived from SB stands at 89.53 F/g at 0.05 A/g current density, while after impregnation with NiO, it increases to 250.53 F/g at the same current density. The results demonstrate the possibility of activated carbon from sugarcane bagasse waste composited with NiO as supercapacitor electrodes.
Carbon composite of NiO hydrothermal impregnation from sugarcane bagasse and its electrochemical properties Nasti, Al Nadine De; Siburian, Kyfti Yolanda; Sembiring, Abraham Danofan; Kristianto, Hans; Susanti, Ratna Frida; Oktaviano, Haryo Satriya; Nugroho, Agung
Jurnal Rekayasa Proses Vol 17 No 2 (2023): Volume 17, Number 2, 2023
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.88210

Abstract

Sugarcane bagasse (SB) can synthesize activated carbon (AC) through a two-step calcination process at calcination at 400oC and activation at 800oC. NaOH 0.1 M is used to activate the pre-carbonized sample in the activation step. The AC samples undergo hydrothermal impregnation with nickel oxide (NiO) at 110°C. The X-ray diffraction (XRD) pattern and Energy dispersive X-ray spectroscopy (EDX) confirmed the presence of NiO after this process. Scanning Electron Microscope (SEM) indicates the presence of pore structures in the sample morphology. A three-electrode system with 1 M Na2SO4 as an electrolyte was employed to assess the electrochemical properties. The specific capacitance for activated carbon derived from SB stands at 89.53 F/g at 0.05 A/g current density, while after impregnation with NiO, it increases to 250.53 F/g at the same current density. The results demonstrate the possibility of activated carbon from sugarcane bagasse waste composited with NiO as supercapacitor electrodes.
Co-Authors Aminuyati Fatmawati, Dyah Ayu Kristianto, Hans Nasti, Al Nadine De Nugroho, Agung Ratna Frida Susanti Sembiring, Abraham Danofan Siburian, Kyfti Yolanda Triyono Uswatul Chasanah, Uswatul Wega Trisunaryanti