https://ejournal.unib.ac.id/kumparan_fisika/issue/feed 2024-12-01T00:00:00+00:00 Aprina Defianti aprina.defianti@unib.ac.id Open Journal Systems <p>Jurnal Kumparan Fisika is an open access and double blind peer-reviewed journal that contains articles on the results of research on teaching physics, learning physics, physics theory, and applied physics. Jurnal Kumparan Fisika is managed by the Physics Education Study Program of the Teaching and Education Faculty of Universitas Bengkulu. Jurnal Kumparan Fisika is published in April, August and December a year by Unib Press. Jurnal Kumparan Fisika received e-ISSN <a href="https://issn.lipi.go.id/terbit/detail/1515598548">2655-1403</a> in 2018 and p-ISSN <a href="https://issn.lipi.go.id/terbit/detail/1560827953">2685-1806</a> in 2019. Jurnal Kumparan Fisika has been indexed in DOAJ since 2019 and accredited as SINTA 4 on April 2020 and as <strong>SINTA 3</strong> on April 2022.</p> https://ejournal.unib.ac.id/kumparan_fisika/article/view/32633 2024-08-27T16:26:29+00:00 Delpina Nggolaon dnggolaon@gmail.com Stevi Silahooy silahooystevi@gmail.com Gede Wiratma Jaya gedewiratmajaya.unpatti@gmail.com Nikmans Hattu nikmanshattu@gmail.com

<p><strong>A</strong><strong>B</strong><strong>S</strong><strong>T</strong><strong>R</strong><strong>A</strong><strong>K</strong></p> <p> </p> <p>Penelitian ini bertujuan untuk melakukan analisis dan karakterisasi senyawa silika (SiO₂) berbahan dasar batuan vulkanik di Pulau Ambon yang diekstraksi menggunakan metode kopresipitasi. Hal ini dikarenakan material senyawa silika merupakan salah satu material maju yang saat ini berperan pesat dalam dunia industri karena memiliki banyak keunggulan. Proses analisis dilakukan terhadap hasil pengujian karakterisasi menggunakan beberapa instrumen, antara lain XRF, XRD, dan SEM. Berdasarkan hasil uji XRF, serbuk silika mampu dimurnikan menjadi sebesar 47,40 wt %. Hal ini dikarenakan metode kopresipitasi mampu menghilangkan impuritas pengotor yang terkandung didalam batuan vulkanik. Kemudian untuk mengetahui fasa, struktur morfologi, dan ukuran partikel dari serbuk silika maka dilakukan uji XRD dan SEM. Berdasarkan hasil uji diketahui bahwa serbuk silika memiliki fasa amorf dengan posisi puncak yang paling kuat pada sudut 2θ = 23.68˚. Hasil citra SEM menunjukkan adanya aglomerasi dan menghasilkan distribusi ukuran partikel tertinggi berada pada rentang 11-15 nm dengan ukuran partikel rata-rata sebesar 13,824 nm.</p> <p> </p> <p>Kata kunci—Batuan Vulkanik, Kopresipitasi, nano-Silika Amorf</p> <p> </p> <p><strong>ABS</strong><strong>T</strong><strong>R</strong><strong>A</strong><strong>C</strong><strong>T</strong></p> <p> </p> <p>This research aims to analyze and characterize silica compounds (SiO₂) derived from volcanic rocks on the Ambon Island that were extracted using the co-precipitation method. This is because silica compound materials are one of the advanced materials that are currently playing a rapid role in the industrial world because they have many advantages. The analysis process was carried out on the results of characterization tests using several instruments, including XRF, XRD, and SEM. Based on the XRF test results, silica powder was able to be purified to 47.40 wt%. This is because the coprecipitation method is able to remove impurities contained in volcanic rocks. Then, to determine the phase, morphological structure and particle size of the silica powder, XRD and SEM tests were carried out. Based on the test results, it is known that silica powder has an amorphous phase with a strong board peak at at 2θ angles = 23.68˚. The results of the SEM image show that there is agglomerate and produce the highest particle size distribution in the range of 11-15 nm with an average size of 13.824 nm.</p> <p> </p> <p>Keywords—Volcanic rocks, Co-Precipitation, Amorphous nano-Silica</p>

2024-12-01T00:00:00+00:00 Copyright (c) 2024 Delpina Nggolaon, Stevi Silahooy, Gede Wiratma Jaya, Nikmans Hattu