Karakterisasi Arus-Tegangan Sensor Gas Hidrogen Dari Bahan Komposit Semikonduktor TiO2-SnO2

Authors

  • Reza Hamdani 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.7.1.73-79.2018

Abstract

Telah dilakukan karakterisasi sensor gas hidrogen berupa pelet dengan bahan komposit TiO2-SnO2. Pelet sensor gas hidrogen dibuat dengan komposisi yang berbeda. Proses pembuatan sensor gas hidrogen diawali dengan pencampuran bahan, kalsinasi pada temperatur 500°C selama 4 jam, penggerusan, kompaksi dan sintering pada temperatur 700°C selama 4 jam dengan mengunakan metode reaksi dalam keadaan padat. Sensor gas hidrogen diuji pada temperatur ruang dengan mengukur nilai I-V, nilai sensitivitas, nilai konduktivitas, waktu respon dan karakterisasi XRD. Berdasarkan pengukuran I-V bahwa sampel 70% mol SnO2+30% mol TiO2 memiliki sensitivitas tertinggi yaitu 5,58 pada tegangan 27 Volt. Nilai konduktivitas tertinggi pada sampel 70%mol SnO2+30% mol TiO2 yaitu 6,34x10-2/Ωm pada lingkungan hidrogen. Waktu respon sampel 70%mol SnO2+30% mol TiO2 pada tegangan 27 volt adalah 36 sekon. Hasil XRD menunjukaan ukuran kristal 70% mol SnO2 + 30% mol TiO2  adalah 141,64 nm lebih kecil dibandingkan dengan bahan SnO2 dan TiO2 tanpa doping yaitu 149,101 nm dan 159,25 nm

Kata kunci: konduktivitas, sensitivitas, sensor gas hidrogen, TiO2-SnO2, 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 Reza Hamdani, Elvaswer Elvaswer

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