Karakteristik Sensor Gas Hidrogen dari Bahan Semikonduktor TiO2 (Titanium Dioxide) Didoping Na2CO3 (Natrium Carbonat)

Authors

  • Sri Ramadhani Laboratorium Fisika Material, Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Andalas
  • Elvaswer Elvaswer Laboratorium Fisika Material, Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.7.1.56-62.2018

Abstract

Telah dilakukan karakterisasi sensor gas hidrogen berupa pelet dari bahan semikonduktor TiO2-Na2CO3. Pelet sensor gas hidrogen dibuat sebanyak enam sampel dengan variasi komposisi yang berbeda. Tahap pembuatan sensor gas hidrogen terdiri atas pencampuran bahan, kalsinasi pada temperatur 500 oC selama 4 jam, penggerusan, kompaksi, dan sintering pada temperatur 700 oC selama 4 jam. Sensor gas hidrogen diuji pada temperatur ruang dengan melihat karakteristik I-V, nilai sensitivitas, nilai konduktivitas, waktu respon, dan karakterisasi XRD. Berdasarkan pengukuran karakteristik I-V, sampel dengan variasi mol  98% mol TiO2 + 2% mol Na2CO3 merupakan sampel dengan hasil terbaik karena memiliki nilai sensitivitas tertinggi. Sensitivitas yang didapat yaitu 3,18 pada tegangan 6 volt. Nilai konduktivitas tertinggi dimiliki sampel 98% mol TiO2 + 2% mol Na2CO3 yaitu 1,30 x 10-3/Ωm pada lingkungan hidrogen. Waktu respon sampel 98% mol TiO2 + 2% mol Na2CO3 pada tegangan 6 volt adalah 57 sekon. Hasil XRD menunjukkaan ukuran kristal 98% mol TiO2 + 2% mol Na2CO3 lebih besar dibandingkan dengan TiO2 murni.

Kata kunci: sensor gas hidrogen, TiO2-Na2CO3, sensitivitas, konduktivitas, waktu respon

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Published

2018-01-03

Issue

Vol. 7 No. 1 (2018)

Section

Articles

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Copyright (c) 2018 Sri Ramadhani, Elvaswer Elvaswer

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