ANALISIS KRISTAL SERBUK MgTiO3 HASIL PENCAMPURAN LOGAM TERLARUT AKIBAT PERLAKUAN PANAS DAN PENAMBAHAN PEG 400, 1000 HASIL PENCAMPURAN LUAR

SARI, LISMA DIAN K. (2014) ANALISIS KRISTAL SERBUK MgTiO3 HASIL PENCAMPURAN LOGAM TERLARUT AKIBAT PERLAKUAN PANAS DAN PENAMBAHAN PEG 400, 1000 HASIL PENCAMPURAN LUAR. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Telah dilakukan studi analisis kristal serbuk MgTiO3 (MT) hasil pencampuran logam terlarut akibat perlakuan panas dan penambahan PEG400, 1000 hasil pencampuran luar. Pencampuran luar adalah penambahan PEG sebelum pencampuran kedua prekursor yaitu Mg dan Ti dilakukan, untuk membedakan dengan metode pencampuran dalam (penambahan PEG setelah pencampuran kedua prekursor dilakukan). Serbuk logam murni Mg dan Ti digunakan sebagai bahan dasar. Masing-masing logam dilarutkan ke dalam HCl 37%, selanjutnya ditambahkan templat PEG dengan variasi massa 0,5; 1,0; 1,5; 2,0 dan 2,5 gram dalam kondisi cair. Kedua larutan prekursor tersebut dicampur dan diaduk selama 5 jam lalu dikeringkan pada temperatur 105-110 ºC. Sampel serbuk MT tanpa dan dengan PEG1000 sebanyak 1,5 gram dipanaskan pada temperatur 100; 200; 300; 400; 500 dan 600ºC selama 1 jam. Serbuk dengan variasi massa PEG400 dan 1000 dikalsinasi pada temperatur 600°C selama 1 jam. Serbuk hasil kalsinasi, dikarakterisasi menggunakan DSC-TGA dan XRD, selanjutnya dianalisis kristalinitas menggunakan HSP (High Score Plus), komposisi fasa dengan Rietica, dan ukuran kristal dianalisis dengan MAUD. Hasil yang diperoleh akibat perlakuan panas menghasilkan dekomposisi kristal serbuk MT yang berbeda antara sampel MT tanpa dan dengan PEG1000. Penambahan variasi massa PEG400 dan 1000 menggunakan metode pencampuran luar menghasilkan fasa utama MT, serta fasa residu periklas dan rutil. Fasa sekunder MgTi2O5 (MTO) hanya muncul pada sampel MT dengan penambahan PEG400 sebanyak 1,5 gram dan PEG1000 sebanyak 1 gram. Ukuran kristal terkecil 23 nm pada sampel dengan PEG400 sebanyak 2,5 gram. Hasil-hasil penelitian yang didapatkan meyakinkan bahwa PEG400 dan 1000 dapat berperan signifikan sebagai templat dan surfaktan dalam proses pembentukan nanokristal MT hasil metode pencampuran luar PEG. ============================================================ The crystal analysis of MgTiO3 powders has been studied using metal dissolved method with heat treatment process and addition PEG400, 1000 from external mixing result. External mixing is the treatment by adding PEG before mixing both of Mg and Ti precursors for to compare with internal mixing (adding PEG after mixing both of Mg and Ti precursors). The pure metal powders of Mg and Ti are used as raw material. Both of metal powder dissolved in 37% HCl and added PEG with variation of mass such as 0,5; 1,0; 1,5; 2,0 dan 2,5 grams. Both of precursor solution are mixed for 5 hour and then dried on temperature 105-110°C. The samples with and without PEG1000 (1,5 gr) are heated on temperature 100; 200; 300; 400; 500; and 600°C for 1 hour. The samples using variation of mass PEG400 and 1000 are calcinated on the temperature 600°C for 1 hour. The samples which have been calcinated are characterized using DSC-TGA and XRD. Crystallinity were analyzed using HSP (high score plus), composition of phase were analyzed using Rietica, and crystal size were analyzed using MAUD. The synthesis result from sample with heat treatment process obtained the crystal decomposition of MT powder is different between sample MT with PEG and without PEG1000. The variation of mass PEG400 and 1000 using external mixing method produced MT as the main phase, as well as periclase and rutil as residue phase. The secondary phase MTO appeared on MT sample with PEG400 (1,5 gr) and PEG1000 (1 gr).The result ensure that PEG400 and 1000 act as template and surfactant on the process of nanocrystal MT formation using external mixing method of PEG.

Item Type: Thesis (Masters)
Additional Information: RTFi 620.5 Sar a
Uncontrolled Keywords: metode pencampuran luar, MgTiO3, PEG, DSC-TGA, XRD
Subjects: Q Science > QC Physics
Divisions: Faculty of Mathematics and Science > Physics > (S2) Master Theses
Depositing User: Mrs Anis Wulandari
Date Deposited: 04 Jan 2017 07:59
Last Modified: 04 Jan 2017 07:59
URI: http://repository.its.ac.id/id/eprint/1304

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