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SINTESIS KOMPOSIT NANO PANI/Fe3O4 KONDUKTIF BERBASIS PASIR ALAM Hamid, Abd Basith; Sholichah, Nikmatin; Rahayu, Vira; Ardimas, Ardimas; Fadhli, Ulfa Mahfudli
Indonesian Physical Review Vol. 4 No. 2 (2021)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v4i2.94

Abstract

Polyaniline is a polymer material that has unique physical and even chemical properties, especially in its electrical properties. PANi synthesis can be carried out by chemical and electrochemical oxide reaction methods. The purposes of this study are to synthesize PANi and PANi / Fe3O4 composites by chemical oxide reactions and measure their conductivity. This research begins with the synthesis of iron oxide (Fe3O4) from natural iron sand and then followed by the synthesis of PANi / Fe3O4 composites using copreticipitation method. The Fe3O4 crystal phase was determined by using XRD, while the vibrational mode and morphology of the PANi / Fe3O4 nanocomposite was observed using FTIR and SEM. The conductivity properties were measured using a LCR meter. Furthermore, the conductivity properties were measured using a LCR meter and the result reveals a greater conductivity value as increasing the concentration of Fe3O4, the highest conductivity value of 3.1 mS/cm is known by the sample with an iron oxide concentration of 1 %. While the samples with a concentration of 0.5 % of iron oxide has conductivity values  of 2.8 mS/cm and pure PANi of 2.1 mS/cm. Due to its properties such  to inert to the environment and having conductive properties, the obtained PANI / Fe3O4 composite can be employed as a super capacitor electrode.
Studi Kelistrikan dari Tanah dalam Pot Tanaman sebagai Bahan Elektrolit Sel Galvani Fadli, Ulfa Mahfudli; Ardimas, Ardimas; Basith, Abd.; Rahayu, Vira; Rahayu, Irasani
Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2022: Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2022
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/prosidingsnfa.v7i0.71961

Abstract

Abstract: The use of conventional batteries can have negative impact on the environment. Galvanic cells as natural batteries are solution by utilizing electrolytes from nature. When two conductors namely Cu and Zn are connected through an electrolyte solution it will form a galvanic cell circuit so that a potential difference arises as a result of chemical reactions from electrodes. This study will examine the performance of soil in plant pots as an electrolyte. Galvanic cell performance is done by measuring voltage and current using voltmeter and ammeter. The independent variables are the humidity and acidity, which are measured with a pH-moisture meter. The tested soil showed an acidity value of around 7. This acidity result could mean that the soil sample containing plants was in normal condition, not acidic and not alkaline. As for the value of soil moisture, which is moist, with a value between 3 to 7. The resulting current and voltage tend to increase with the increase in the value of humidity. the average voltage value is 0.635 Volts and the average current is 0.185 mA, so it can be concluded that the soil containing plants on it can be recommended as an electrolyte in galvanic cell.Abstrak: Pemakaian baterai konvensional dapat berdampak buruk bagi lingkungan. Sel galvani sebagai baterai alami menjadi solusi dengan memanfaatkan elektrolit dari alam. Ketika dua konduktor yakni Cu dan Zn terhubung melalui larutan elektrolit maka akan membentuk rangkaian sel galvani sehingga beda potensial muncul sebagai akibat reaksi kimia di kedua elektrodanya. Penelitian ini akan mengkaji kinerja tanah dalam pot tumbuhan sebagai bahan elektrolit. Kinerja sel galvani dilakukan dengan mengukur tegangan dan arus menggunakan voltmeter dan amperemeter. Untuk variabel bebasnya adalah nilai kelembapan dan nilai keasaman, yang diukur dengan alat pH-moisture meter. Tanah yang diuji menunjukkan nilai keasaman (pH) disekitar 7. Hasil keasaman (pH) ini dapat diartikan bahwa sampel tanah yang terdapat tumbuhannya berada dalam keadaan normal, tidak asam dan tidak basa. Sedangkan untuk nilai kelembaban tanahnya yaitu bersifat lembab, dengan nilai diantara 3 sampai 7. Arus dan tegangan yang dihasilkan cenderung mengalami kenaikan terhadap kenaikan nilai kelembaban. nilai tegangan rata-rata sebesar 0,635 Volt dan arus rata-rata sebesar 0,185 mA, sehingga dapat disimpulkan bahwa tanah yang berisi tumbuhan diatasnya dapat direkomendasikan sebagai elektrolit pada sebuah sel galvani.