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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Jurnal Spektra Journal of Aceh Physics Society JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Jurnal Litbang Industri Jurnal Edu Research BULETIN FISIKA JOURNAL ONLINE OF PHYSICS Turbo : Jurnal Program Studi Teknik Mesin Spektra: Jurnal Fisika dan Aplikasinya Communications in Science and Technology Indonesian Physical Review APTEK Jurnal Fisika Indonesia Teknomekanik Unri Conference Series: Community Engagement Journal of Applied Materials and Technology Journal of Technomaterial Physics Dinamika Lingkungan Indonesia Jurnal Litbang Industri PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Newton-Maxwell Journal of Physics National Multidisciplinary Sciences Science, Technology, and Communication Journal
Erman Taer
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Journal : Communications in Science and Technology

 1 
Three-dimensional pore structure of activated carbon monolithic derived from hierarchically bamboo stem for supercapacitor application Taer, Erman; Pratiwi, Lini; Apriwandi, Apriwandi; Mustika, Widya Sinta; Taslim, Rika; Agustino, Agustino
Communications in Science and Technology Vol 5 No 1 (2020)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1000.712 KB) | DOI: 10.21924/cst.5.1.2020.180

Abstract

A three-dimensional pore structure on activated carbon derived from hierarchically bamboo stem was synthesized in the monolithic form for increased applicability as a supercapacitor electrode. The preparation involved two step carbonizations, using a chemical activation at different concentrations. Subsequently, the morphology, chemical content, specific surface area and pore size distribution, as well as crystalline degree were evaluated with scanning electron microscopy, energy X-ray (EDX), N2 sorption and X-ray diffraction, respectively. Therefore, cyclic voltammetry (CV) was used to assess the electrochemical performance, in a two electrode system. The result shows the significant impact of the three-dimensional structure on electrochemical performance, and the optimized sample exhibited specific capacitance of 168.8 F g-1, energy density of 23.44 Wh kg-1, and power density of 84.46 W kg-1.
Nanofiber-enrich activated carbon coin derived from tofu dregs as electrode materials for supercapacitor Taer, Erman; Apriwandi; Hasanah, Fainida; Taslim, Rika
Communications in Science and Technology Vol 6 No 1 (2021)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.6.1.2021.407

Abstract

In this study, the activated carbon with enriched nanofiber obtained from free-binder materials. It was conducted tofu dregs carbon nanofiber as electrode material for supercapacitor without the addition of pVdF/PTFE. The chemical impregnation of NaOH, ZnCl2 and H3PO4 at high-temperature pyrolysis in an N2-CO2 environment converted the tofu dregs into carbon coin. Subsequently, the physical properties including, microcrystalline, morphology, element analysis, and electrochemical properties of specific capacitance were investigated. The morphological structure of activated carbon showed high nanofiber density and was decorated by sponge-like pores. In addition, the nanofiber contains oxygen content of 12.70% which can act as self-doping due to the pseudo-capacitance properties. Furthermore, the two-electrode system obtained a specific capacitance of 163 F g-1 in 1 M H2SO4 electrolyte. The results showed that tofu dregs-based activated carbon coins are sustainable and efficient to obtain high-dense nanofiber structure as electrode materials for energy storage applications.
Cigarette filter butts-derived activated carbon with free binder electrode design for solid-state supercapacitor application: From hazardous waste to solid-state supercapacitor Hamzah, Yanuar; Taer, Erman; Apriwandi, Apriwandi; Supian, Faridah Lisa; Mozaffari, Niloofar; Mozaffari, Nastaran
Communications in Science and Technology Vol 8 No 2 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.2.2023.1252

Abstract

The aim of this research is to formulate activated carbon monolith from hazardous waste of cigarette filter butts (CFB) for electrode material monolith design in solid-state supercapacitor application. Potassium hydroxide (KOH) was selected for activation. The ratio of CFB to KOH varied in terms of weight between 1:2 and 1:4, thereby obtaining activated cigarette filter carbon (ACFC). The carbon that has been obtained is designed to be solidly in the form of an additive-free monolith. Monolith-activated carbon is physically characterized to examine thermal decomposition profiles (pre-carbonized), structure, composition, morphology, surface area adsorption, and electrochemical measurements. The optimum precursor was marked with high wettability with self-O-doped of 5.44%.in carbon content of 94.56%. Activated carbon electrodes prepared from ACFCs showed an optimum specific capacitance of ~87.17 F g-1, which is a more ecologically responsible method of producing supercapacitors.
Novel colored biomass-waste from food industry sector derived hierarchical porous carbon nanofiber for robust symmetric supercapacitor Nursyaputri, Wan Mery; Fairuzy, Zeeva Khalilah; Khumairah, Zahra; Yanti, Novi; Nursyafni, Nursyafni; Apriwandi, Apriwandi; Taslim, Rika; Taer, Erman
Communications in Science and Technology Vol 9 No 2 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.2.2024.1534

Abstract

A major challenge in the use of supercapacitor energy storage applications is optimizing 3D-hierarchical porous and 2D nanofiber structures to improve the electrochemical performance of colored biomass-derived activated carbon (AC). Therefore, this study aims to synthesize AC from Dracaena Angustifolia (DA) leaves and dregs using a sustainable method through chemical activation and high-temperature pyrolysis. AC was designed to be adhesive-free to maintain the true mechanical properties of the precursor. Research results showed that the sample of DA-dregs-KOH shows optimal results with a specific surface area (317.66 m2 g-1). The electrochemical performance of hierarchical porous carbon treated with 1 M H2SO4 electrolyte in a 2-electrode system had a nanofiber structure with the highest specific capacitance (248 F g-1) at 1 A g-1 and energy density (12.96 Wh kg-1) with a coulomb efficiency 84.1%. Based on these results, DA dreg-KOH based porous AC with hierarchical porous morphology shows significant potential to be used as binder-free electrode materials that can produce high-performance supercapacitors as a new renewable and sustainable energy storage solution.
Biosynthesis of sulfur and selenium co-doped ZnO nanoparticles for the enhanced photocatalytic treatment of industrial wastewater Sulistyo Rini, Ari; Sitorus, Afrida Helena; Rati, Yolanda; Taer, Erman; Usman, Zulkarnain; Jasril; Umar, Akrajas Ali
Communications in Science and Technology Vol 10 No 1 (2025)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.10.1.2025.1539

Abstract

Although ZnO photocatalysts show potential for wastewater treatment, their low efficiency limits the commercialization. To address this problem, we investigated the effect of co-doping ZnO with selenium (4%, fixed) and sulfur (0.5, 1, and 1.5 wt%). The catalysts were synthesized using Matoa leaf extract and zinc nitrate hexahydrate while being subjected to 540 W microwave irradiation. UV-Vis analysis revealed absorption peaks at 340-398 nm with sulfur doping increasing the band gap. XRD confirmed the preservation of the hexagonal wurtzite structure, while FESEM images showed a morphological transformation from nanoflowers to petal flakes with increasing sulfur content. EDX analysis confirmed the presence of S, Se, Zn, and O, while FTIR analysis identified OH groups from the extract in the nanoparticles. BET surface area was found to progressively reduced from 24.58 to 16.86 m²/g with sulfur doping. The co-doped catalyst with 0.5 wt% sulfur (0.5S(4Se-ZnO)) demonstrated the highest degradation of 4-nitrophenol at 99.69%, indicating its applicability in industrial wastewater treatment. These findings indicate that the Se/S co-doped ZnO, prepared via a green synthesis route, holds a strong promise as an efficient and practical photocatalyst for addressing environmental pollution in a sustainable and economical manner.
Co-Authors ', Rika ', Sugianto A. Ira Afdhal Rizki Afrinal, Afrinal Agustino Agustino Agustino Agustino Agustino Agustino Agustino Agustino Agustino Agustino Agustino, Agustino Ahmad Fudholi Akrajas Ali Umar Andika Afrianda Anisa Indriawati Anita, Sofia Antonius Surbakti Antonius Surbakti Antonius Surbakti Apriwandi Apriwandi . Apriyani, Irma Awaludin Martin Awitdrus Awitdrus, Awitdrus Bidayatul Armynah Budi Astuti Chitraningrum, Nidya D.N. Sarah D.N. Sarah, D.N. Debi Yana Decha Apriliany Suwandi Delovita Ginting, Delovita Deniza, Rindhu Nabila Desmagrini Desmagrini Desmawati Desmawati Dewi Marina Dewi Ramayani Edy Saputra Eko Nur Arif Erwin Amiruddin Erwin Erwin Eva Wahyuni Harahap Fairuzy, Zeeva Khalilah Fitria Puspita Sari Gina Sania H. Yusra Harahap Eva Wahyuni Hardanto, Lilik Tri Hasanah, Fainida Hefniati Hermansyah Aziz Indah Tamara Sitorus Indriawati, Anisa Inrizky Domy Muchammadsam Intan Kusmawati Iwantono Iwan Barnawi Jasril Jasril Juandi Juandi Julnaidi Julnaidi Julnaidi, Julnaidi Juwita Ade Putri Khairul Ihsan Khotimah, Nur Khumairah, Zahra Kresna, Pharada Kristin Natalia Lazuardi Umar Lilik Tri Hardanto Lutfi Rindang Lestari M. Paiszal Marina, Dewi Meisya, Meisya Melda Riyani Butet Melinda Vivi Miftah Ainul Mardiah Minarni Shiddiq Mozaffari, Nastaran Mozaffari, Niloofar Muhammad Nasir Muhammad Nasir Mukhlis Mukhlis Mustika, Widya Sinta Nasruddin Nasruddin Novi Yanti Novi Yanti Novi Yanti Novi Yanti Nur Akmal Nursyafni, Nursyafni Nursyaputri, Wan Mery Pandi Kurniawan Pharada Kresna Pratiwi, Lini Purba, Cenora Evelynza Putri, Rahma Lia R. Farma R. Farma R. Farma, R. R. Syech R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim, R. Rahmi Dewi Rahmondia Nanda Setiadi Rakhmawati Farma Rati, Yolanda Retno Handayani Riad Syech Riduan Alvinsen Sirait Rika ' Rika Taslim Rika Taslim Rika Taslim Rika Taslim Rika Utari Rikaryalita Novitra Rini, Ari Sulistyo Romi Fadli Syahputra Ropiqotul Husna S. Aiman S. D. Hartati S. Nurjanah Saktioto Saktioto Salomo Salomo Septa Herniyanti Sitorus, Afrida Helena Sri Yanti Sugianto ' Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugiyanto Sugiyanto Sukendi Sukendi Sulistyo Rini, Ari Supian, Faridah Lisa Syahrul Syahrul Syamsudhuha Syamsudhuha T. Oktaviani Taslim Rika Usman Malik W. S. Mustika W.S. Mustika Wetya Fatma Kumala Sari Widodo Budi Kurniawan Yan Soerbakti Yan Soerbakti Yanuar Hamzah Yolanda Rati Zikri Alrifani Zulkarnain Usman Zulkifli ' Zulkifli Zulkifli Zulkifli Zulkifli Zurya Hanifa