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All Journal JFA (Jurnal Fisika dan Aplikasinya)
Mashuri Mashuri
Department of Physics, Institut Teknologi Sepuluh Nopember, Kampus ITS-Sukolilo Surabaya
Physics

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Electrical Properties of Microporous Carbon from Biomass Wood; Tamarind, Mahogany, Teak, and Coconut Shell: M Mashuri, Cindy C Karim, A Fauziyah, S Suyatno Mashuri Mashuri; Cindy C. Karim Cindy C. Karim; A. Fauziyah A. Fauziyah; Suyatno Suyatno
Jurnal Fisika dan Aplikasinya Vol 20 No 1 (2024): January 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i1.20759

Abstract

Microporous carbon has been successfully synthesized from biomass, namely Tamarind Wood (Tamarindus Indica), Mahogany Wood (Swietenia Mahagoni), Teak Wood (Tectona Grandis), and Coconut Shell (Cocos Nucifera). Microporous carbon was synthesized using the carbonization method at 600°C for 45 minutes and washed using an ultrasonic cleaner for 6 hours. Next, the micro-porous carbon powder is dried in the sun and grinded mechanically. Microporous carbon powder was characterized by phase, average particles size, gap energy and electrical conductivity using XRD, PSA, UV-vis and LCR meters. The characterization results show that microporous carbon in the rGO (reduced graphene oxide) phase with a (002) reflection plane in an amorphous carbon graphite structure, the average particle size of Tamarind Wood (8.068 µm), Mahagony Wood (4.409 µm), Teak Wood (3.902 µm) and Coconut shell (3.653 µm). The gap energy measurement results show respectively 1.491 eV, 1.771 eV, 1.821 eV and 2.342 eV with an electrical conductivity value of 142.1×10-2 S/m, 1.281×10-2 S/m, 0.962×10-2 S/m, 0.771×10-2 S/m respectively Coconut shell, Teak Wood, Mahogany Wood, and Tamarind Wood. This microporous carbon-based wood biomass is semiconductors that have the potential as environmentally friendly energy storage supercapacitor materials.
Sintesis dan Sifat Penyerapan Gelombang Mikro Grafena Alam (reduced graphene oxide) Berbahan Dasar Arang Bambu Kuning (Bambusa Vulgaris), Ori (Bambusa Bambos Miq) dan Petung (Dendrocalamus Asper): M Mashuri, Luthfiati Ningsih, M. Zainul Asrori, T Triwikantoro, D Darminto Mashuri Mashuri; Luthfiati Ningsih Luthfiati Ningsih; M. Zainul Asrori M. Zainul Asrori; Triwikantoro Triwikantoro; Darminto Darminto
Jurnal Fisika dan Aplikasinya Vol 16 No 3 (2020): October 2020 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v16i3.6973

Abstract

Telah dilakukan sintesis serbuk grafena alam berfasa reduced graphene oxide (rGO) dari arang bambu Kuning (Bambusa Vulgaris), Ori (Bambusa Bambos Miq) dan Petung (Dendrocalamus Asper) sebagai bahan penyerap gelombang mikro dengan metode karbonisasi. Serbuk grafena alam berfasa rGO dikarakterisasi dengan x-ray diffraction (XRD), berupa lembaran tipis berskala mikro dengan tebal ~0,17 µm yang dikarakterisasi dengan scanning electron microscopy (SEM) dan memiliki konduktivitas listrik ~5,5.10-6 S/cm. Grafena alam berfasa rGO memiliki densitas rendah, dielectric loss yang kuat dan specific surface area yang tinggi memiliki potensi menyerap gelombang mikro dengan baik. Penyerapan gelombang mikro pada frekuensi 8 – 12 GHz diukur menggunakan alat vector network analyzer (VNA). Hasil pengukuran menunjukkan nilai maximum reflection loss (RLm) dan matching frequency (fm) serbuk grafena alam berfasa rGO dari arang bambu Kuning, Ori dan Petung secara berturut-turut RLm = -34,15 dB, -45,46 dB dan -52,88 dB dengan fm = 8,40 GHz, 8,40 GHz dan 8,56 GHz pada ketebalan 0,6 mm. Secara literatur penyerapan gelombang mikro dari grafena alam berfasa rGO dari arang bambu Petung lebih baik dibanding dari bahan komersial dan sangat potensial untuk dikembangkan menjadi bahan penyerap gelombang mikro hybrid yang ramah lingkungan.
Efek Pemanasan Pra-Kompaksi dan Sinter Terhadap Sifat Kuat Tekan Komposit Al/SiC: Mashuri dan I. Mufidah Mashuri Mashuri; I. Mufidah I. Mufidah
Jurnal Fisika dan Aplikasinya Vol 15 No 3 (2019): October 2019 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v15i3.5281

Abstract

Research on the effects of pre-compacting heating on Aluminum (Al) matrix and sintering on the density and compressive strength of Al/SiC composites made using powder metallurgy method. The synthesized of Al/SiC composites was began by heating pre-compacting of Al matrix at temperatures of 40, 60, and 800 C within 1 hour, mechanically compacting and sintering at temperatures of 400, 500, and 6000 C. In order to increase the homogeneity of pressure during compacting throughout in the composites, non-reactive and volatile zinc stearate was used. Phase and morphological identification were carried out using X-rays Diffractometry (XRD) and Scanning Electron Microscope (SEM) devices. The density and porosity were measured by the Archimedes method and the compressive strength was tested by the Torsee Universal Testing Machine. The results showed that pre-compacting in the Al matrix with the temperature of 600 C and sintered temperatures up to 5000 C can increase the density and the compressive strength of Al/SiC composites prepared by powder metallurgy method. Sintering process can give a new phase -Al2O3 in the surface area contact of Al-SiC which can strengthen interfacial bonds and reduce porosity so that the density and the compressive strength increase.
Studi Awal Solar Water DistillerAir Laut Dengan Limbah Botol Plastik Untuk Penyediaan Air Bersih: Endarko, Suasmoro, Triwikantoro, Agus Purwanto, Zaenal Arifin, Mashuri, Yoyok Cahyono, Yanurita Dwi Hapsari, Heru Sukamto, Suminar Pratapa, Herliansyah, Fachrina Maryam, Mira Anjani, dan Niken Rancangkapti Endarko Endarko; Suasmoro Suasmoro; Triwikantoro Triwikantoro; Agus Purwanto Agus Purwanto; Zaenal Arifin Zaenal Arifin; Mashuri Mashuri; Yoyok Cahyono Yoyok Cahyono; Yanurita Dwihapsari Yanurita Dwihapsari; Heru Sukamto Heru Sukamto; Suminar Pratapa Suminar Pratapa; Herliansyah Herliansyah; Fachrina Maryam Fachrina Maryam; Mira Anjani Mira Anjani; Niken Rancangkapti Niken Rancangkapti
Jurnal Fisika dan Aplikasinya Vol 14 No 2 (2018): June 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i2.3572

Abstract

It has been successfully investigated the utilization of waste plastic bottles as a solar water distiller for the provision of clean water. In this study 600 and 1500 mL plastic bottles used for solar water distiller with 9 variations. A 600 mL bottle with a variation of the addition of soda cans painted black or not (3 variations) as type A. Hereinafter, 600 mL plastic bottle connected with 1500 mL plastic bottle positioned above 600 mL bottle contained small plastic bottle placed in bottle 1500 mL with variations of either painted black or not (3 variations) is called type B. Moreover, the next three variations are 1500 mL bottles cut in half to resemble open containers with smaller plastic bottles placed inside whether painted black or not (Type C). Furthermore, as a comparison of plastic containers (basin) with a diameter of 25 cm used for the solar distiller. The study was conducted with 30 mL of seawater as the initial data, after 8 hours exposed to the sunlight. The results showed that plastic containers had better efficiency compared to all types of the plastic bottle as solar distiller with the value up to (55.7 ± 3.1)%, while for the distillation system with plastic bottles, the highest efficiency was obtained type distillation system A with a range of 11-13%. While for type B and C respectively equal to 1-4%.
Co-Authors A. Fauziyah A. Fauziyah Agus Purwanto Agus Purwanto Cindy C. Karim Cindy C. Karim Darminto Darminto Endarko Endarko Fachrina Maryam Fachrina Maryam Herliansyah Herliansyah Heru Sukamto Heru Sukamto I. Mufidah I. Mufidah Luthfiati Ningsih Luthfiati Ningsih M. Zainul Asrori M. Zainul Asrori Mira Anjani Mira Anjani Niken Rancangkapti Niken Rancangkapti Suasmoro Suasmoro Suminar Pratapa Suminar Pratapa Suyatno Suyatno Triwikantoro Triwikantoro Yanurita Dwihapsari Yanurita Dwihapsari Yoyok Cahyono Yoyok Cahyono Zaenal Arifin Zaenal Arifin