PEMBUATAN DAN KARAKTERISASI KERAMIK FILM TEBAL La0,9Ca0,1FeO3 UNTUK SENSOR GAS ETANOL DENGAN MEMANFAATKAN Fe2O3 HASIL EKSTRAKSI DARI MINERAL YAROSIT

Ariyani CD, Nenden Ika (2017) PEMBUATAN DAN KARAKTERISASI KERAMIK FILM TEBAL La0,9Ca0,1FeO3 UNTUK SENSOR GAS ETANOL DENGAN MEMANFAATKAN Fe2O3 HASIL EKSTRAKSI DARI MINERAL YAROSIT. S1 thesis, Universitas Pendidikan Indonesia.

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Abstract

Fabrikasi keramik film tebal La0,9Ca0,1FeO3 menggunakan Fe2O3 hasil ekstraksi dari mineral yarosit sebagai sensor gas etanol telah berhasil dilakukan. Penggunaan Fe2O3 hasil ekstraksi dari mineral yarosit sebagai bahan dasar dalam penelitian ini dilakukan untuk meningkatkan nilai tambah mineral yarosit. Serbuk Fe2O3 hasil ekstraksi dari mineral yarosit dan 10% mol CaO dilarutkan dalam pelarut HCl 10 M, serta serbuk LaCl3.7H2O dilarutkan dalam pelarut aquades. Selanjutnya campuran larutan tersebut ditambahkan sejumlah NH4OH hingga pH larutan 8 untuk menghasilkan endapan La0,9Ca0,1FeO3. Endapan La0,9Ca0,1FeO3 dikeringkan pada temperatur 1000C kemudian dikalsinasi pada temperatur 8000C selama 2 jam untuk menghasilkan serbuk La0,9Ca0,1FeO3. Serbuk La0,9Ca0,1FeO3 digerus untuk menghasilkan serbuk berukuran nanopartikel. Serbuk La0,9Ca0,1FeO3 yang sudah digerus dicampur Organic Vehicle (OV) untuk menghasilkan pasta La0,9Ca0,1FeO3. Menggunakan teknik screen printing, pasta La0,9Ca0,1FeO3 dilapiskan diatas substrat alumina (Al2O3) kemudian dibakar pada temperatur 6000C selama 2 jam untuk menghasilkan keramik film tebal La0,9Ca0,1FeO3. Berdasarkan data hasil karakterisasi XRD (X-Ray Diffraction), keramik film tebal La0,9Ca0,1FeO3 berhasil dibuat meskipun ada sebagian Fe2O3 tidak bereaksi. Hasil foto SEM (Scanning Electron Microscope) menunjukkan bahwa ukuran butir keramik film tebal La0,9Ca0,1FeO3 hampir seragam, serta terdapat banyak pori (struktur poros). Pengukuran karakteristik listrik keramik sensor gas berbasis La0,9Ca0,1FeO3 menunjukkan respon yang baik terhadap adanya gas etanol. Hasil karakterisasi sifat listrik memperlihatkan bahwa keramik film tebal La0,9Ca0,1FeO3 memiliki nilai sensitivitas listrik tinggi serta temperatur kerja optimal yang rendah yaitu dalam rentang 2900C – 2950C. Kata Kunci : La0,9Ca0,1FeO3, Sensor Gas; Etanol; Keramik Film tebal; Mineral Yarosit;--- Fabrication of La0,9Ca0,1FeO3 thick film ceramics using Fe2O3 powder extracted from yarosite mineral as ethanol gas sensor has been successfully performed. Fe2O3 powder extracted from yarosite mineral as the basic material in this research can increase the added value of yarosite mineral. Fe2O3 powder from yarosite mineral and 10% mol of CaO dissolved in HCl 10 M were mixed with LaCl3.7H2O powder dissolved in aquades.The solution of Fe2O3, LaCl3.7H2O and CaO mixed and then was precipitated using NH4OH. The La0,9Ca0,1FeO3 precipitate was dried at temperature 1000C and then calcined at temperature 8000C for 2 hours to produce La0,9Ca0,1FeO3 powder. La0,9Ca0,1FeO3 powder was crushed to produce a nanoparticle-sized powder. Using the screen printing technique, the La0,9Ca0,1FeO3 paste is coated on the alumina substrate (Al2O3) and then fired at 6000C for 2 hours to produce thick film ceramic of La0,9Ca0,1FeO3. Based on XRD (X-Ray Diffraction) characterization data, the thick film ceramics of La0,9Ca0,1FeO3 were succesfully made even though some of Fe2O3 did not reacted. The analysis of thick film ceramics using SEM (Scanning Electron Microscope) showed that the grain size of the thick film ceramics of La0,9Ca0,1FeO3 was almost uniform, and there were many pores (porous structure). Electrical characteristics data of ceramic based gas sensor of La0,9Ca0,1FeO3 showed good response to the presence of ethanol gas. Electrical properties data also showed that the thick film ceramic of La0,9Ca0,1FeO3 had high electrical sensitivity value and low optimum working temperature that is in the range 2900C - 2950C. Keyword : La0,9Ca0,1FeO3; Gas Sensor; Ethanol; Thick Film Ceramics; Yarosite Mineral

Item Type: Thesis (S1)
Additional Information: No. Panggil : S FIS ARI p-2017; Pembimbing : I. Endi Suhendi, II. Dani Gustaman; NIM. 1304611.
Uncontrolled Keywords: La0,9Ca0,1FeO3, Sensor Gas; Etanol; Keramik Film tebal; Mineral Yarosit, La0,9Ca0,1FeO3; Gas Sensor; Ethanol; Thick Film Ceramics; Yarosite Mineral
Subjects: Q Science > QC Physics
Divisions: Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam > Jurusan Pendidikan Fisika > Program Studi Fisika (non kependidikan)
Depositing User: Mrs Dian Arya
Date Deposited: 16 Aug 2018 08:10
Last Modified: 16 Aug 2018 08:10
URI: http://repository.upi.edu/id/eprint/30690

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