Pengaruh Penambahan rGO pada LaFeO3 yang Didoping Co Terhadap Energi Adsorpsi Molekul Etanol Menggunakan Density Functional Theory untuk Sensor Gas

Alta Ridho Anugrah; Andhy Setiawan; Yuyu Rachmat Tayubi; Ahmad Aminudin; Lilik Lilik; Siti Kudnie Sahari; Endi Suhendi

doi:10.17509/wafi.v8i2.62210

Authors

Alta Ridho Anugrah Program Studi Fisika, Universitas Pendidikan Indonesia, Indonesia
Andhy Setiawan Program Studi Fisika, Universitas Pendidikan Indonesia, Indonesia
Yuyu Rachmat Tayubi Program Studi Fisika, Universitas Pendidikan Indonesia, Indonesia
Ahmad Aminudin Program Studi Fisika, Universitas Pendidikan Indonesia, Indonesia
Lilik Lilik Program Studi Fisika, Universitas Pendidikan Indonesia, Indonesia
Siti Kudnie Sahari Faculty of Engineering, Universiti Malaysia Sarawak, Malaysia
Endi Suhendi Program Studi Fisika, Universitas Pendidikan Indonesia, Indonesia

DOI:

https://doi.org/10.17509/wafi.v8i2.62210

Keywords:

LaFeO3, Cobalt, gas sensor, ethanol, reduce graphene oxide, density functional theory

Abstract

Material LaFeO3 (LFO) telah banyak digunakan sebagai material pembuatan sensor gas. Meskipun LFO sudah banyak diaplikasikan sebagai bahan pembuatan sensor gas, namun selektivitas dan sensitivitas serta temperatur kerja snesor gas masih belum optimal. Pada penelitian ini, LFO ddoping dengan Co dan dilapisi single layer rGO untuk menganalisis sensitivitas dan selektivitasnya berdasarkan energi adsorpsi dengan menggunakan Density Functional Theory (DFT). Berdasarkan hasil penelitian didapatkan bahwa dengan adanya doping Co dan lapisan rGO dapat meningkatkan energi adsorpsi pada LFO. Penambahan lapisan rGO pada LFO membuat peningkatan energi adsorpsi sebesar 23.58 % dari -2.38 eV untuk LFO doping Co menjadi -2.93 eV ketika ditambahkan rGO. Hal tersebut menunjukan potensi dari penambahan lapisan rGO pada material LFO untuk material sensor.

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