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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI JKPK (Jurnal Kimia dan Pendidikan Kimia) Indonesian Physical Review Charity : Jurnal Pengabdian Masyarakat PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Indonesian Journal of Physics (IJP) eProceedings of Engineering Telkatika: Jurnal Telekomunikasi Elektro Komputasi & Informatika
Memoria Rosi
Telkom University
Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Physics Public Health Social Sciences Other

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Sintesis Grafit Tereksfoliasi Dengan Larutan Garam K2SO4 Menggunakan Metode Elektrokimia Aji, Indrianto Bayu; Rosi, Memoria; Andiani, Linahtadiya
eProceedings of Engineering Vol. 10 No. 1 (2023): Februari 2023
Publisher : eProceedings of Engineering

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Abstract

Abstrak- Pada penelitian ini telah dilakukan sintesis grafit yang berasal dari pensil 2b menjadi exfoliated graphite dengan larutan garam anorganik K2SO4 menggunakan metode elektrokimia. Variasi konsentrasi larutan garam yang digunakan adalah 0,05 M, 0,1 M, 0,2 M, 0,35 M dan 0,5 M kemudian tegangan yang digunakan dalam proses eksfoliasi pada metode elektrokimia sebesar 15 V selama 3 menit. Konsentrasi 0,2 M dianggap optimal karena mendapatkan nilai yield tertinggi yaitu sebesar 15,12 %. Konduktivitas maksimal sebesar 10,5 x 10-3 s/m2, berdasarkan hasil cyclic voltammetry nilai kapasitansi tertinggi sebesar 21,2 F/g dan untuk karakterisasi galvanostatic charge discharge menunjukkan bahwa waktu pengisian dan pengosongan sebesar 2 µs. Sedangkan sebagai pembanding, untuk elektroda grafit tanpa eksfoliasi didapatkan nilai konduktivitas sebesar 0,7 x 10-3 s/m2 dan untuk kapasitansi sebesar 1,2 F/g. Elektroda pembanding melakukan pengisian pengosongan lebih lama sebesar 4 µs dikarena tidak melewati tahap aktivasi melalui metode elektrokimia.kan Kata Kunci- Grafit, exfoliated graphite, K2SO4, metode elektrokimia, superkapasitor
Sintesis Grafit Tereksfoliasi Dengan Na2O4 Menggunakan Metode Elektrokimia Santoso, Ricky Anthony; Rosi, Memoria; Andiani, Linahtadiya
eProceedings of Engineering Vol. 10 No. 1 (2023): Februari 2023
Publisher : eProceedings of Engineering

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Abstrak-Pada penelitian ini, dilakukan sintesis grafit tereksfoliasi dari batangan isi pensil 2B (grafit). Proses sintesis dilakukan menggunakan larutan garam anorganik Na2SO4 dengan metode elektrokimia. Sintesis grafit tereksfoliasi divariasi berdasarkan konsentrasi Na2SO4. Variasi konsentrasi Na2SO4 yang digunakan adalah 0,05 M; 0,1 M; 0,2 M; 0,3 M; dan 0,4 M. Proses elektrokimia dilakukan dengan tegangan 20 V. Grafit tereksfoliasi yang telah disintesis dikarakterisasi dengan tiga jenis pengukuran, yaitu four 3 point probe, galvanostatic charge 3 discharge, dan cyclic voltammetry untuk menentukan konduktivitas dan nilai kapasitansi spesifik dari grafit tereksfoliasi. Dari hasil karakterisasi tersebut ditunjukan adanya peningkatan konduktivitas dan kapasitansi spesifik sebesar 25,6 uS/m dan 31,8 mF/g saat menggunakan konsentrasi 0,3 M dari sebelumnya yang hanya 4,56 uS/m dan 4,48 mF/g saat menggunakan serbuk batangan isi pensil 2B (grafit). Kata kunci - Grafit Tereksfoliasi, Na2SO4, Elektrokimia
Comparison of Organic Liquid Soap Made from Papaya-Turmeric and Aloe Vera-Piper Betel Juninho, Rahmat; Syamsudin, Irfan Afandi; Handayani, Ismudiati Puri; Rosi, Memoria; Kusumaningrum, Hertiana Bethaningtyas Dyah; Salam, Yusup ABD; Islamiah, Desti Umdatul; Rinaldi, Astrid
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 9, No 1 (2024): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v9i1.84254

Abstract

In the wake of the COVID-19 pandemic, the imperative to mitigate pathogen transmission has catalyzed the innovation of soaps imbued with antimicrobial and antibacterial properties. Diverging from conventional reliance on synthetic chemicals, often associated with adverse dermatological reactions, this study explores the formulation of organic liquid soaps. These soaps leverage naturally occurring antibacterial and antimicrobial compounds from readily accessible plants, presenting a viable alternative to commercially available inorganic body washes predominantly manufactured by small to medium-sized enterprises. Specifically, this research harnesses papaya and aloe vera extracts for their antimicrobial attributes, augmented with turmeric and piper betel for enhanced antibacterial efficacy. Despite the recognized potency of turmeric and piper betel, variability in their effectiveness necessitates rigorous validation against the Indonesian National Standards (SNI) to ensure product quality and safety. This includes comprehensive evaluations of pH levels, density, Total Plate Count (TPC), and Mold and Yeast Count (MYC) to certify the soap's inhibitory capacity against bacterial and fungal proliferation. Employing maceration and hot processing techniques, the formulated papaya-based soap adhered to SNI 4085:2017 criteria for pH and MYC, although initially failing the TPC test. Subsequent incorporation of turmeric extract facilitated compliance with all SNI benchmarks. Conversely, aloe vera formulations only satisfied pH requirements under the SNI, even after adding piper betel. However, substituting piper betel with turmeric extract enabled the aloe vera soap to fulfill the requisite SNI parameters. These findings underscore turmeric extract's superior antibacterial properties, positioning it as a pivotal component in papaya and aloe vera soap formulations. Contrary to prevalent assumptions regarding piper betel's antimicrobial and antibacterial effectiveness, our investigation substantiates turmeric's superior role in bacterial growth inhibition within organic soap matrices.
Co-Authors Abdullah, Nor Hakimin Abrar Ismardi Aji, Indrianto Bayu Aly Zainal Abidin Arif Rivaldi Asep Wildan Sugiman Astrid Rinaldi Athalya Maida Utama Aziz Apriyanto Bintang Ilhamdihardian Desti Umdatul Islamiyah Dwi Hany Eryati Faridz Abimanyu Fariz Akbar Kautsar Fatimah A. Noor Fatmizal, M Nanang Ziad Fatmizal, M. Nanang Ziad Fitri Atikah Fitria Dwi Puspitaningrum Henny Maratusholihah Hertiana Bethaningtyas Dyah Kusumaningrum I. P. Handayani Ian Ramadhani Indriantro Bayu Aji Islamiah, Desti Umdatul Ismudiati Puri Handayani JF. Zen Jilva Novandarys Sugandi Juninho, Rahmat Khairurrijal Khairurrijal Lina Aisyah Al Baroroh Linahtadiya Andiani M. Yusup ABD Salam Mikrajuddin Abdullah Permatasari, Leah Mina Ricky Anthony Santoso Rinaldi, Astrid Salam, Yusup ABD Santoso, Ricky Anthony Siburian, Dedy Hendra Suwandi Suwandi Syamsudin, Irfan Afandi Theresia Regina Marbun Yogi Januardi