Synthesis of silica nanopowder produced from Indonesian natural sand via alkalifussion route

Munasir, Munasir; Sulton, A.; Triwikantoro, T.; Zainuri, Mochamad; Darminto, Darminto

doi:10.1063/1.4820986

Cited by 38 publications

(30 citation statements)

References 5 publications

(16 reference statements)

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“…Pemurnian endapan silika dengan kemurnian tinggi (98,81%) dari lumpur lapindo (Adziimaa, 2013). Silika dari sekam padi merupakan jenis lain juga telah berhasil disintesis dengan tingkat kemurnian 98% dengan menggunakan metode kopresipitasi (Nuntiya, et.al.,2008), silika dari lumpur lapindo dengan metode kopresipitasi, kemurnian sebesar 95,7% (Munasir, et al, 2010), silika dari jenis pasir slopeng dengan tingkat kemurnian mencapai 98% dengan menggunakan metode alkalifusi (Munasir, et al, 2013 Sedimen yang bersifat lepas akan berubah menjadi batuan yang keras akibat pembebanan dan perekatan senyawa mineral dalam larutan, selanjutnya membentuk batuan sedimen. Apabila terjadi peningkatan tekanan dan suhu akibat penimbunan atau terlibat dalam proses pegunungan, maka batuan sedimen akan berubah menyesuaikan lingkungan baru, membentuk batuan malihan atau metamorfosis.…”

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ANALISIS KANDUNGAN SiO2 PADA BATUAN GREEN TUFF DENGAN METODE GRAVIMETRIK

Fuadi¹,

Amir²

2020

Jambura Physics J.

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Research has been conducted on the content of Silica dioxide (SiO2) in Green Tuff rocks from Bone of South Sulawesi Province. This Green Tuff rock is a type of sedimentary rock formed from volcanic ash released from a pit during a volcanic eruption. This research uses the gravimetric method which is analytical chemical method by weighing the sample that has been melted as much as 0.5 grams then adding enough distilled water, 10 ml of HCl and 5 ml of HNO3, after that it is heated to dry and added 5 mL of HCl. Reheat until the volume becomes half of the initial volume and added distilled water afterwards, cooled and filtered. The purpose of adding HCl and HNO3 is so that the silica content can be separated from the impurities so that a larger crystal-shaped silica precipitate and a yellowish-colored solution containing impurities are present in the precipitate. So that in this study the results of the analysis of the content of Silica dioxide (SiO2) of 76.50%.

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ANALISIS KANDUNGAN SiO2 PADA BATUAN GREEN TUFF DENGAN METODE GRAVIMETRIK

Fuadi¹,

Amir²

2020

Jambura Physics J.

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“…Munasir et.al. [4] menggunakan metode basah untuk mensintesis nanosilika dari pasir Bancar dengan ukuran sekitar 58 nm dengan presentasi berat Si mencapai 95,7%. Studi-studi lain yang dilakukan antara lain adalah sintesis partikel silika dari pasir pantai Purus Padang dengan metode kopresipitasi [5], dan sintesis silika dari pasir pantai Slopeng dengan metode Alkalifussion Route [6].…”

Section: Pendahuluanunclassified

Analisis Potensi Pasir Tablolong Dan Pasir Koka Sebagai Sumber Silika Menggunakan Uji XRF Dan XRD

Pingak

Johannes

Lapono

2018

FISA

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Abstrak Silika memiliki banyak aplikasi sehingga penelitian tentang sintesis silika dari bahan alam yang praktis dan murah sangat penting untuk dilakukan. Dari warnanya, pasir Tablolong dan pasir Koka adalah dua pasir alam di NTT yang diduga mengandung silika dengan kemurnian yang cukup tinggi. Tujuan penelitian ini adalah mengetahui kandungan awal silika dalam pasir Tablolong dan pasir Koka untuk mengetahui potensi kedua pasir alam ini sebagai penghasil silika dengan kemurnian yang tinggi. Sampel pasir Tablolong dan Koka dambil dan dibersihkan, dicuci dengan akuades, kemudian dikeringkan pada suhu 150 0C selama 8 jam untuk menghilangkan kadar airnya. Sampel kemudian dihaluskan menggunakan mortar selama 30 menit dan disaring menggunakan ayakan 100 mesh. Sampel pasir Tablolong dan Koka ini kemudian diuji XRF dan XRD. Berdasarkan uji XRF, diperoleh kandungan silika dalam pasir Tablolong adalah 34,04% dan pasir Koka sebesar 38,91% dan merupakan senyawa oksida dengan kandungan terbanyak kedua dalam pasir setelah CaO. Hasil uji XRD juga bersesuaian dengan hasil uji XRF, dimana fase dominan dalam pasir Tablolong dan Koka adalah fase kalsit CaCO3 dan fase dominan kedua adalah fase quartz SiO2. Berdasarkan kedua hasil ini, dapat disimpulkan bahwa pasir dari kedua lokasi ini berpotensi sebagai penghasil silika dengan kemurnian tinggi. Oleh karena itu, dapat disarankan untuk mensintesis silika dari kedua lokasi ini menggunakan metode-metode sintesis yang umum seperti metode kopresipitasi dan metode alkali-fusion. Kata kunci: pasir Tablolong, pasir Koka, silika, XRF, XRD Abstract Silica has many applications and therefore research on synthesis of silica from natural resources is important. From their colors, sand from Tablolong dan Koka beach in NTT could have silica with high purity. The aim of the research is to determine silica content in sand from Tablolong and Koka beach to know the potential of the two beaches as silica sources. Sand from the two locations was cleaned, washed and dried at 150 0C for 8 hours. It was then milled for 30 minutes and filtered using 100 mesh filter. After that, it was characterised using XRF and XRD. From the XRF results, silica content in pasir Tablolong was about 34,04% and 38,91% in pasir Koka and was the second largest in terms of compound content, only smaller in percentage than CaO. XRD also confirmed the XRF results, where the dominant phases in the sand were calcite CaCO3 and quartz SiO2. From these results, it can be concluded that sand from Tablolong and Koka beach have potential as natural sources of silica with high purity. Therefore, synthesis of silica with well-known methods such as coprecipitation and alkali-fusion from the two locations is recommended. Keywords: Tablolong sand, Koka sand, silica, XRF, XRD

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“…In general, quartz sands from the Bancar-Tuban, Indonesia area contain many oxide elements, including SiO 2 , Fe 2 O 3 , CaCO 3 , Al 2 O 3 , and a few other oxides; which are clean brown (Akl et al 2013;Munasir et al, 2013;Sdiri et al, 2014). Furthermore, the color of the quartz sands is bright white or another, depending on its contaminant compounds.…”

Section: Introductionmentioning

confidence: 99%

“…Silica has the crystalline structures of quartz, cristobalite, and tridymite with the temperature stability of 870 C, from quartz to cristobalite, and 1,470 C, from cristobalite to tridymite (Guttman, 1990;Marians and Hobbs, 1990;Stevens et al, 1997;Dapiaggi et al, 2015). Interestingly, slica NPs can be prepared from natural quartz sands (Munasir et al, 2013), siliceous sands (Sdiri et al, 2014), and douiret sands (Trabelsi et al, 2009). The synthesis routes can be employed by the alkali fusion by using KOH at a temperature of 350 C (Mori, 2003), NaOH at a temperature of 500 C (Mori, 2003;Munasir et al, 2013), and Na 2 CO 3 at a temperature of 1,100 C (Trabelsi et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Amorphous SiO2 Nanoparticles from Natural Sands: Structure and Porosity

Munasir¹,

Rohmawati²,

Taufiq³

et al. 2020

CMUJNS

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Silica (SiO2) nanoparticles (NPs) generally include mesoporous materials (2-50 nm), having broad application prospects, such as for drug delivery systems. In this study, we report the porosity of amorphous SiO2NPs by investigating their crystal structure, morphology, diameter, and volume of pores. Amorphous SiO2 NPs have been prepared from quartz sand, heated at a temperature range from 500 to 1,200 °C. The identification of the crystal structure was performed using XRD, the morphology and grain growth particles were considered using SEM, and the diameter and volume of pores were investigated using BET. An FTIR analysis was used to analyze the -Si-O and Si-OH functional groups. The results of this study presented that at a calcination temperature range of 500-800 °C, the crystal structure disappeared. However, at a temperature of 1,000 °C, a new crystalline tridymite structure was observed. Furthermore, the structural transformation was observed at a temperature of 1,200 °C from the amorphous phase to the polycrystalline phase consisted of quartz, cristobalite, and tridymite structures. During the calcination process, as the particles' pore size grew more significantly, the number of grain boundaries decreased, influencing the particle porosity sizes. The results of the analysis using BET presented that the pore surface area and pore volume of the samples tended to be smaller, along with increasing calcination temperature.

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Synthesis of silica nanopowder produced from Indonesian natural sand via alkalifussion route

Cited by 38 publications

References 5 publications

ANALISIS KANDUNGAN SiO2 PADA BATUAN GREEN TUFF DENGAN METODE GRAVIMETRIK

ANALISIS KANDUNGAN SiO2 PADA BATUAN GREEN TUFF DENGAN METODE GRAVIMETRIK

Analisis Potensi Pasir Tablolong Dan Pasir Koka Sebagai Sumber Silika Menggunakan Uji XRF Dan XRD

Amorphous SiO2 Nanoparticles from Natural Sands: Structure and Porosity

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