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All Journal Indonesian Journal of Chemical Science Frontier Agribisnis (Frontbiz)
Ariyanti, Widia
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Social Sciences

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Effect of Cobalt Metal Insertion on Zinc Oxide Nanotube Structure for Hydrogen Gas Sensor Using Density Functional Theory Method Ariyanti, Widia; Kasmui, Kasmui
Indonesian Journal of Chemical Science Vol 10 No 2 (2021)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v10i2.49534

Abstract

Hydrogen gas as a renewable energy has limitations, namely flammable, explosive, colorless, and odorless, making it difficult to detect its presence at normal temperature and pressure. Efforts to determine the presence of hydrogen gas need a gas sensor. This study aims to determine the effect of the insertion of Co metal on Zinc Oxide nanotubes (ZnONT) on changes in adsorption energy and sensor sensitivity on H2 gas with parallel and perpendicular positions. Geometry optimization was carried out using the DMol3 module in Material Studio, the parameters of this research were using Density Functional Theory method, GGA correlation exchange PBE function, and DNP basis set. The results of the calculation of the hydrogen gas adsorption energy from the structures ZnONT.H2 perpendicular, ZnONT.H2 parallel, ZnONT.Co.H2 perpendicular and ZnONT.Co.H2 parallel, respectively, are -23.121205 kJoule/mol; -23.541810 kJoule/mol; -252.783422 kJoule/mol; and -254.599480 kJoule/mol. The calculation of the sensitivity of the hydrogen gas sensor response from the structures ZnONT.H2 perpendicular, ZnONT.H2 parallel, ZnONT.Co.H2 perpendicular and ZnONT.Co.H2 parallel were 1.374; 1,527; 1654,827; and 375,857. Based on the results of the study, it was found that the insertion of Co metal was able to increase the adsorption energy and sensitivity of the hydrogen gas sensor.
Effect of Cobalt Metal Insertion on Zinc Oxide Nanotube Structure for Hydrogen Gas Sensor Using Density Functional Theory Method Ariyanti, Widia; Kasmui, Kasmui
Indonesian Journal of Chemical Science Vol 10 No 2 (2021)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v10i2.49534

Abstract

Hydrogen gas as a renewable energy has limitations, namely flammable, explosive, colorless, and odorless, making it difficult to detect its presence at normal temperature and pressure. Efforts to determine the presence of hydrogen gas need a gas sensor. This study aims to determine the effect of the insertion of Co metal on Zinc Oxide nanotubes (ZnONT) on changes in adsorption energy and sensor sensitivity on H2 gas with parallel and perpendicular positions. Geometry optimization was carried out using the DMol3 module in Material Studio, the parameters of this research were using Density Functional Theory method, GGA correlation exchange PBE function, and DNP basis set. The results of the calculation of the hydrogen gas adsorption energy from the structures ZnONT.H2 perpendicular, ZnONT.H2 parallel, ZnONT.Co.H2 perpendicular and ZnONT.Co.H2 parallel, respectively, are -23.121205 kJoule/mol; -23.541810 kJoule/mol; -252.783422 kJoule/mol; and -254.599480 kJoule/mol. The calculation of the sensitivity of the hydrogen gas sensor response from the structures ZnONT.H2 perpendicular, ZnONT.H2 parallel, ZnONT.Co.H2 perpendicular and ZnONT.Co.H2 parallel were 1.374; 1,527; 1654,827; and 375,857. Based on the results of the study, it was found that the insertion of Co metal was able to increase the adsorption energy and sensitivity of the hydrogen gas sensor.
Strategi Pengembangan Usaha Pengolahan Keripik Singkong Borneo Di Desa Cindai Alus Ariyanti, Widia; Salawati, Umi; Hanafie, Usamah
Frontier Agribisnis Vol 8, No 1 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/frontbiz.v8i1.12264

Abstract

Singkong sangat fleksibel diolah menjadi produk makanan, baik secara langsung maupun tidak langsung maka dari itu munculah sebuah ide mengenai pengembangan produk olahan singkong menjadi salah satu bagian kuliner saat ini. Tujuan penelitian ini adalah untuk menganalisis faktor internal dan eksternal dan menganalisis strategi pengembangan usaha keripik singkong Borneo dengan analisis SWOT. Tempat penelitian berlokasi di Jalan Kebun Raya No,95 RT 05 Rw 02, Desa Cindai Alus, Kecamatan Martapura Kabupaten Banjar, dimulai sejak bulan April 2023. Jenis data yang digunakan adalah data primer dan sekunder. Teknik pengumpulan data yang digunakan yaitu observasi, wawancara, dan dokumentasi. Berdasarkan matriks posisi yang diperoleh dari perhitugan bobot X rating diketahui posisi kuadran usaha keripik singkong Borneo terletak pada kuadran V dengan strategi mempertahankan dan pelihara dengan rata rata 2,0 – 2,99. Dari hasil penggabungan dan pencocokan matriks IE melalui hasil IFE dan EFE diperoleh divisi sel 5 yaitu melaksanakan strategi penetrasi pasar dan pengembangan produk. Dari hasil analisis SWOT diketahui faktor kekuatan adalah terjaganya kualitas serta kuantitas produk, faktor kelemahan adalah kurangnya promosi dan inovasi baik segi rasa maupun produk, faktor peluang adalah permintaan akan produk keripik singkong cukup tinggi dan harga produk lebih murah dibandingkan produk sejenis, faktor ancaman adalah merek dagang yang tidak dicantumkan dan banyaknya perusahaan sejenis
Co-Authors Hanafie, Usamah Kasmui -, Kasmui Umi Salawati