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All Journal Jurnal Ilmu Dasar Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Indonesian Physical Review Jurnal Penelitian Sains dan Pendidikan (JPSP) Jurnal Rekayasa Energi Jurnal Matematika dan Sains (JMS) Taawun: Jurnal Pengabdian kepada Masyarakat
Ulfa Mahfudli Fadli
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Religion Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Physics Other

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Identification and Characterisation of “Black Sticky Rice” (Oriza Sativa Glutinosa) as Photosensitizer in Development of Dye Sensitized Solar Cells (DSSC) Agus Supriyanto; Ashari Bayu Prasada; Cari Cari; Ulfa Mahfudli Fadli
Jurnal ILMU DASAR Vol 17 No 1 (2016)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.254 KB) | DOI: 10.19184/jid.v17i1.2662

Abstract

It has successfully conducted a research to identify and characterize extract of black sticky rice  (Oryza Sativa Glutinosa) as photosensitizers in making of Dye Sensitized Solar Cells (DSSC). Samples were made in the sandwich structure of couple of working electrode and counter electrode. The extraction process of dye in the black sticky rice was stirred for 1 hour and then allowed to stand for 24 hours. Identification of samples using FTIR (Fourier Transform Infra-Red) to determine the chemical bond formed in the sample. Test the absorbance of the sample using UV-Visible Spectrophotometer Lambda 25 test and characterization of current and voltage (I-V) using a Keithley 2602A. The results showed maximum absorbance black rice extract appears in two peaks namely at = 324 nm and = 477 nm. While the I-V curve measurements indicate the efficiency of the resulting large black rice extract was 0.028% on a 12-hour soaking period and 0,032% in 24 hours soaking time. These results indicate that longer soaking could increase the efficiency of the resulting value.Keywords: Ketan Hitam (Oriza Sativa Glutinosa), DSSC,FTIR, UV-Vis, Keithley
ANALISIS KONDUKTIVITAS LISTRIK PADA KITOSAN DARI LIMBAH RAJUNGAN DI PACIRAN SEBAGAI BAHAN ELEKTROLIT PADA BIO-BATERAI Trisna jaya Saputra; Ulfa Mahfudli Fadli; Abdul Basith
JURNAL REKAYASA ENERGI Vol. 2 No. 1 (2023): Jurnal Rekayasa Energi
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.906 KB) | DOI: 10.31884/jre.v2i1.29

Abstract

Baterai merupakan alat elektrokimia yang dibuat untuk mensuplai energi listrik ke sistem starter mesin, lampu-lampu, sistem pengapian dan komponen kelistrikan lainnya. Baterai merupakan sebuah media yang dapat mengubah energi kimia yang terkandung dalam bahan aktif secara langsung menjadi energi listrik. Elektroda dan elektrolit merupakan komponen utama pada baterai. Prinsip kerja pada baterai menggunakan prinsip elektrokimia dengan memanfaatkan proses reduksi-oksidasi. Elektroda positif (+) disebut anoda sedangkan elektroda negative (-) disebut katoda. Bio-Baterai adalah perangkat penyimpanan energi listrik yang elektrolitnya menggunakan bahan organik, Penggunaan polimer sintesis sebagai bahan elektrolit ternyata masih memiliki beberapa kekurangan. Selain harganya yang mahal, dampak lingkungan akibat menumpuknya sampah kimia juga menjadi salah satu permasalahan berbagai jenis material terus dikembangkan dalam pembuatan elektrolit pada bio-baterai. Kitosan mempunyai sifat pengikat ion, tidak beracun, biodegradable (dapat terurai) dan memiliki gugus pasangan elektron bebas yang bisa dijadikan elektrolit dengan nilai konduktivitas yang baik. Kitosan disintesis melalui tahap demineralisasi, deproteinasi dan deasetilasi kemudian dikarakterisasi menggunakan FTIR untuk memastikan bahwa gugus fungsi kitosan telah terbentuk. Pada pengujian konduktivitas, aquades yang ditambahkan kitosan terjadi peningkatan nilai konduktivitas.
EFEK PENYISIPAN Cu KE DALAM DYE BERAS HITAM DENGAN LUASAN 0,5 cm2 PADA DYE SENSITIZED SOLAR CELL (DSSC) Ulfa Mahfudli Fadli; Ardimas; Agus Supriyanto; Cari; Ashari Bayu Prasada
Jurnal Matematika dan Sains (JMS) Vol. 1 No. 1 (2021): Jurnal Matematika dan Sains (JMS)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55273/jms.v1i1.80

Abstract

Thanks to the addition of copper (Cu) metal into black rice (Oryza sativa L. indica) dye as an active material, It has been successfully developed Dye-Sensitized Solar Cells (DSSC). The structure of the sample as a sandwich consisting of the working electrode (TiO2), dye, electrode of platinum (Pt) and the electrolyte sandwiched between two electrodes. Extraction process of black rice Dye was stirred for 30 minutes, then mixed with copper metal (Cu) and be waited for 24 hours. Cu metal was obtained by stirring Copper Sulfate Pentahydrate for 2 hours. The Current and voltage (I-V) of the sample was characterized by using Keithley 2602A. The measurement results showed that the inserting Cu metal of 2 g (0.36 M) was reached the highest efficiency of 0.0217%.
Innovation in The Use of Organic Waste for Biobattery and Biogas Production at TPS3R Lamongan Ulfa Mahfudli Fadli; Rahmah Arfiah Ula; Fatayah; Achsani Ira Samsiyah; Aprielia Inzal Fillah Addurrotul Efendi
TAAWUN Vol. 5 No. 01 (2025): TA'AWUN FEBRUARY 2025
Publisher : Pusat Penelitian Pengabdian Pada Masyarakat Sekolah Tinggi Ilmu Tarbiyah Al-Fattah Siman Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37850/taawun.v5i01.871

Abstract

Organic waste that accumulates in the 3R Waste Processing Site (TPS3R) environment needs to be utilized as well as possible. The purpose of this community service activity is to utilize energy from organic waste as the main raw material for making biobattery and biogas. The final result of this community service is a tool that can convert energy from organic waste to electricity (biobattery) and produce gas (biogas). The community service method uses socialization and technology application workshops by assembling tools and materials. Biobattery and biogas equipment, if operated every day, can increase the utilization of organic waste by 17 kg, with 5 kg for biobattery and 12 kg for biogas. Biobattery cells containing around 100 mL of organic waste can produce a maximum voltage of 0.9 Volts and a maximum electric current of 6 mA. Biogas itself requires a sorting process and a fermentation process whose time is adjusted to the presence or absence of organic waste stock at TPS3R. The initial Biogas Place (Digester) requires 600 kg of organic waste. This community service work is expected to inspire the community, especially the Sekar Manfaat Sekaran Lamongan TPS3R Team, to better manage the waste in their surroundings.
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.
Pengaruh Uji Kelistrikan Sel Volta Buah Belimbing (Averrhoa carambola) Dengan Luasan Elektroda 6 Cm2 Sebagai Solusi Energi Alternatif Ramah Lingkungan Saputro, Agung; Fadli, Ulfa Mahfudli; Sholichah, Nikmatin
Jurnal Penelitian Sains dan Pendidikan (JPSP) Vol 4 No 1 (2024)
Publisher : IAIN Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23971/jpsp.v4i1.7254

Abstract

Pada beberapa jenis buah-buahan seperti buah belimbing memiliki kandungan zat kimia aktif yang dapat diubah menjadi energi listrik. Proses yang dapat dilakukan yakni melalui reaksi reduksi dan oksidasi yang terjadi pada kedua elektroda. Tujuan dari dua konduktor, ketika Cu dan Zn dihubungkan melalui larutan elektrolit dapat membentuk rangkaian menjadi sel volta. Tegangan muncul sebagai akibat reaksi kimia di kedua elektroda. Sedangkan elektroda positif (Cu) mengalami reaksi reduksi, selanjutnya elektroda negatif (Zn) akan mengalami reaksi oksidasi, sehingga elektron mengalir dari seng ke tembaga. Penelitian ini difokuskan pada pengujian buah belimbing (Averrhoa carambola) sebagai larutan elektrolit. Jenis rangkaian seri pararel digunakan sebagai variasi dalam penelitian ini. Sel volta digunakan sebanyak 10 sel untuk menghasilkan tegangan dan arus maksimal. Sel volta buah belimbing dibuat dengan cara merangkai kerangka sel volta dengan kabel dan LED serta diuji dengan voltmeter dan amperemeter. Telah didapatkan pada sel volta belimbing matang dirangkai secara seri menghasilkan tegangan sebesar 4,2 V dan arus 0,2 mA sedangkan jika dirangkai secara pararel menghasilkan tegangan 0,6 V dan arus 1,05 mA. Pada uji ketahanan dengan rangkaian seri, sel volta buah belimbing mampu menyalakan lampu LED hingga 9 hari. Sel volta ini dapat menghasilkan listrik dengan elektroda Cu dan Zn yang tergantung pada kondisi elektrolit
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.
Co-Authors Abd Basith, Abd Abdul Basith Achsani Ira Samsiyah Agung Saputro, Agung Agus Supriyanto Agus Supriyanto Aprielia Inzal Fillah Addurrotul Efendi Ardimas, Ardimas Ashari Bayu Prasada Ashari Bayu Prasada Cari Cari Cari Fatayah Hamid, Abd Basith Rahayu, Irasani Rahayu, Vira Sholichah, Nikmatin Trisna jaya Saputra Ula, Rahmah Arfiyah