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All Journal Jurnal Neutrino : jurnal fisika dan aplikasinya Jurnal Pembelajaran Fisika JFA (Jurnal Fisika dan Aplikasinya) Jurnal Penelitian dan Pembelajaran IPA Jurnal Penelitian Pembelajaran Fisika WACANA DIDAKTIKA JIPF (Jurnal Ilmu Pendidikan Fisika) Momentum: Physics Education Journal Jurnal Pendidikan Fisika dan Keilmuan (JPFK) Cetta: Jurnal Ilmu Pendidikan MATAPPA: Jurnal Pengabdian Kepada Masyarakat JPF : JURNAL PENDIDIKAN FISIKA Jurnal Pendidikan Fisika dan Teknologi JURNAL PENDIDIKAN MIPA Jurnal Eduscience (JES) Jurnal Pengabdian kepada Masyarakat Al-Irsyad Journal of Physics Education Jurnal Ilmiah Pengabdian Kepada Masyarakat Gudang Jurnal Multidisiplin Ilmu Atmosfer: Jurnal Pendidikan, Bahasa, Sastra, Seni, Budaya, Dan Sosial Humaniora Bhinneka: Jurnal Bintang Pendidikan dan Bahasa Jurnal Pengabdian Masyarakat JURNAL MULTIDISIPLIN ILMU AKADEMIK
Herman Jufri Andi, Herman Jufri
Universitas Islam Madura
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Journal : Jurnal Neutrino : jurnal fisika dan aplikasinya

 1 
THE EFFECT OF Mg-Al Wt% FOR PHASE FORMATION OF SPINEL MgAl2O4 PRODUCED BY METAL DISSOLVED METHOD Umamah, Chairatul; Pratapa, Suminar; Andi, Herman Jufri
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 12, No 1 (2019): 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.v12i1.7816

Abstract

Synthesis of magnesium aluminate spinel powder (MgAl2O4, abbreviated as MA) were prepared by the liquid mixing method. The synthesis of MA involved Mg powders with various weight compositions (4.8; 10; 20; 30; 40; and 60%) and Al powders (95.2; 90; 80; 70; 60 and 40%) as the raw materials, which were independently dissolved in 37% HCl to form MgCl2 and AlCl3 solutions. Both solutions were then mixed and stirred for 5 hours and dried to a temperature of about 100-105°C to produce powders with different weight compositions. Each powder resulted from drying was characterized using DTA-TGA, and then calcined at 650 °C; 750 °C and 850 °C for 1 hour. The calcined powder was characterized by XRD to qualitative and quantitative analyses using Rietica. It was found that MA samples contained only MgAl2O4 and MgO as the impurity phase. The relative weight fraction of MgAl2O4 increased up to 99% for 95.2 wt% Al. Using an extrapolative approach to determine the Mg-to-Al composition, nearly pure MA, as high as 99%, was achieved at 95.2% Al and 4.8% Mg.
THE EFFECT OF PH AND CALCINATION TEMPERATURE ON THE ZrO2 PHASE FORMATION FROM NATURAL ZIRCON SAND OF KERENG PANGI Abdullah, Mohammad; Triwikantoro, Triwikantoro; Umamah, Chairatul; Andi, Herman Jufri
Jurnal Neutrino Vol 13, No 2 (2021): APRIL
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.v13i2.10507

Abstract

In this research ZrO2 has been synthesized from Kereng Pangi zircon sand in Central Kalimantan through alkali fusion-coprecipitation method. Firstly, zircon sand (ZrSiO4) was purified to reduce impurities by magnetic separation, cleaned using an ultrasonic cleaner, soaked/leached with HCl 2 M for 12 hours and leached with HCl at 60 ºC for 3 hours. Secondly, alkali fusion was done with KOH as an alkali. This product was then washed by water and dried before leached with HCl 30% at 90 ºC for 30 minutes to precipitate and seperate Silica from Zircon. ZrO2 filtrate (ZrOCl2) precipitated with NH4OH at pH 4, pH 7, and pH 10 forms Zr(OH)4 gel. Zr(OH)4 gel was dried and characterized by DTA-TGA, which was then followed by calcination based on DTA TGA results at temperature ranges of 550 ºC - 700 ºC to produce ZrO2. XRD results show that single tetragonal phase of ZrO2 is formed in all variations of pH precipitation and calcination temperature. An analysis using MAUD software show that crystal size reduces as the increase in precipitation of pH. The crystal size results are 110 nm, 66 nm and 48 nm at pH 4, pH 7 dan pH 10 at 700 ºC, respectively. Moreover, XRF results show that ZrO2 with purity is at around 95.8 % at pH 4 and 96.3 % at pH 7 and pH 10.
Co-Authors Abdullah, Mohammad Abdur Rouf Analiatus Shofiyah Badrut Tamam chair, chairatul umamah Chairatul Umamah Chariratul Umamah Darminto Darminto Diraya, Inayatun El Indahnia Kamariyah Faizil Muqoddas Hidayatullah, Moh. Ina Daril Hanna, Ina Daril Inayatun Diraya Luaini Luaini Lubna Dwi Masluhah Lukluk Ibana Maisyatul Azkiyah MARIA BINTANG Moh Syamsul Mohammad Lutfiyadi Mohammad Lutfiyadi Musayyadah Nilna Mely Dina Nilna Mely Dina Robiatul A Rohmah Maghfirotur S. Ida Kholida Siska Siska SITI AINUR ROMLAH Sitti Aisah Suminar Pratapa Sunariatus Solehah Suprianto Suprianto Susriyana Mery Handayani Syaiful Bahri Triwikantoro Triwikantoro Ulfatul Fitriyah Ulfatul Fitriyah Wayan Suana Zainal Arifin Zainurrahman Zainurrahman