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All Journal Jurnal Sains dan Seni ITS Jurnal Neutrino Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jusikom : Jurnal Sistem Komputer Musirawas Jurnal ULTIMA Computing Al-Khidmat : Jurnal Ilmiah Pengabdian Kepada Masyarakat Generation Journal Attanwir : Jurnal Keislaman dan Pendidikan
Rohmah, Roihatur
Universitas Nahdlatul Ulama Sunan Giri
Religion Aerospace Engineering Arts Humanities Computer Science & IT Control & Systems Engineering Education Engineering Physics Social Sciences Other

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Journal : Jurnal Neutrino

 1 
THE INFLUENCE OF SILICA CALCINATION TEMPERATURE VARIATION TO THE HYDROPHOBICITY AND TRANSMITTANCE ON GLASS SUBSTRATE Rohmah, Roihatur; Zainuri, Mochamad
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 12, No 2 (2020): April
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1297.046 KB) | DOI: 10.18860/neu.v12i2.8338

Abstract

The hydrophobic surface can be self-cleaning. The hierarchy of surface roughness affects the hydrophobic surface. In this research, the hydrophobic surface was fabricated by modification of surface roughness from the composite filler. Natural silica was used as a filler and was done a variation of calcination temperature to modify the hierarchy of roughness formed. The variation of calcination temperature was 800°C, 1000°C, 1200°C, and 1400°C. The coating method was a dip-coating method by 30-second long immersion. A glass as coating media was coated by PVDF/SiO2 composite. The hydrophobic surface could be known from the value of the water contact angle (WCA) formed. If a water contact angle more than 90°, the surface could be called the hydrophobic surface. In this research, the hydrophobicity aspect cause of variation of calcination temperature was known from the value of water contact angle formed on the surface of PVDF/SiO2 composite coating 800°C, 1000°C, 1200°C, and 1400°C was 117,12° ± 0,98°, 107,80° ± 0,91°, 121,31° ± 1,45°, and 111,75° ± 1,47°, respectively.
ERRATUM TO: THE INFLUENCE OF SILICA CALCINATION TEMPERATURE VARIATION TO THE HYDROPHOBICITY AND TRANSMITTANCE ON GLASS SUBSTRATE Rohmah, Roihatur; Zainuri, Mochamad
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 13, No 1 (2020): October
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/neu.v13i1.11561

Abstract

Erratum: Roihatur Rohmah, M. Zainuri. Jurnal Neutrino:Jurnal Fisika dan Aplikasinya. 2020 April: 12(2):49-56. (Doi: 10.18860/neu.v12i2.8208: The title "The Influence of Silica Calcination Temperature Variation to The Hydrophobicity and Transmittance on Glass Substrate" was deleted because it is the same as the author's thesis.Therefore, the title was replaced with "Study of Hydrophobic Surface by Silica Calcination Temperature Variation."
CHARACTERIZATION OF CARBON NANOCRISTRAL STRUCTURE BASED ON CORN COB CHARCOAL Pelangi Eka Yuwita; Roihatur Rohmah
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 15, No 1 (2022): October
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/neu.v15i1.17067

Abstract

Carbon has an amorphous structure and a crystalline structure. The amorphous structure of carbon is usually found in charcoal, while the crystalline structure of carbon can be obtained from heat treatment. In the present study, the synthesis of carbon nanocrystals based on corn cob charcoal was successfully carried out. The synthesis began with the carbonization process of corn cobs to produce charcoal. Corn cob charcoal powder was then put into 80 mL of HCl solution and stirred using a magnetic stirrer by a speed of 750 rpm at room temperature and 80 mL of NH4OH solution was titrated into it. After the synthesis, the carbon powder was calcined at 400°C and activated using PEG 2000 template. The samples were tested using XRD (X-ray Diffraction) and SEM-EDX (Scanning Electron Microscope-Energy Dispersive X-ray). The carbon component (C) from the EDX test after the synthesis and carbonization process had an atomic percentage of 56.89% and increased by 81.06 % after PEG 2000 activation. The results of the X-ray diffraction pattern show that in all samples a broad and weak diffraction pattern was the characteristic of amorphous carbon. However, on carbon heated for 5 hours at 400°C and the addition of PEG 2000 activator, the crystal structure pattern with higher diffraction peaks was obtained and the peaks of diffraction were matched with CIF data 9008569 from phase C Graphite which had a space group P of 63 mc. SEM data on the morphology of the material showed that after receiving PEG activator, the carbon particles were split into smaller ones so that it increased in surface area and showed fairly even distribution of pores which was also seen in the surface morphology of the carbon
Co-Authors Irsyada, Rahmat Lisa Aminatul Mukarromah M. Ridlwan Hambali Mochamad Zainuri Moh. Muhajir Moh. Muhajir Muhammad Jauhar Vikri Muhammad Jauhar Vikri Mukti Fatimah Mukti Fatimah Mundzar Fahman Oktavio Bima Saputra Pelangi Eka Yuwita Putri Lian Putri Liana Putri Liana Zainuri (DOI: 10.12962/j24604682.v12i2.1331), Mochamad