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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Sains Dasar Proceeding Seminar LPPM UMP Tahun 2014 Jurnal Kimia dan Kemasan JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Acta Pharmaciae Indonesia : Acta Pharm Indo INDONESIAN JOURNAL OF APPLIED PHYSICS JPM (Jurnal Pemberdayaan Masyarakat) Jurnal Biologi Tropis Jurnal Inovasi Teknik Kimia Berkala Ilmiah Kimia Farmasi AKM: Aksi Kepada Masyarakat Jurnal Pengabdian Masyarakat Bangsa
Devi Indah Anwar
Universitas Muhammadiyah Sukabumi
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Synthesis and Characterization of Reduced Graphene Oxide (RGO) as a Solid-State Electrolyte in Batteries Lela Mukmilah Yuningsih; Devi Indah Anwar; Eva Fauziah
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 15, No 1 (2025): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v15i1.88878

Abstract

Reduced Graphene Oxide (rGO) is a derivative of graphene that has undergone the removal or reduction of its oxygen groups. This study performed the synthesis and characterization of rGO as a solid-state electrolyte in batteries in order to assess the conductivity of rGO and its ability to store electrical currents and voltages. The rGO was synthesized by the Hummers method and the reduction of graphene oxide with a zinc reductor. Graphite oxide was first synthesized by oxidizing graphite with H2SO4 dan KMnO4. This graphite oxide was ultrasonically exfoliated and treated with a Zn reductor to produce rGO in powdered form. The rGO was characterized with Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), an LCR-meter, and a Digital Multimeter. This identified a diffraction pattern in rGO with a 2θ of 25.85° and a d-spacing of 3.444 Å with 48.76 % crystallinity. FTIR observation on rGO exhibited O-H vibrations at a wavelength of 3431.6 cm-1, C=O at 1722.43 cm-1, C=C (1573.91 cm-1), and C-O (1080.14 cm-1). The rGO was observed to have a triple-layered morphology at 10000x magnification. Conductivity for the rGO was identified as 0.000357005 S/cm, while the generated voltage was 1.21 V with a current of 3.55 mA.
Pemanfaatan Sampah Organik untuk Pupuk Kompos dan Budidaya Maggot Sebagai Pakan Ternak Reni mulyani; Devi Indah Anwar; Neneng Nurbaeti
Jurnal Pemberdayaan Masyarakat Vol 6 No 1 (2021): Mei
Publisher : Direktorat Penelitian dan Pengabdian kepada Masyarakat (DPPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/jpm.v6i1.4911

Abstract

Organic waste that comes from daily food leftovers in the community has not been used properly, people still put together organic waste and non-organic waste which is then burned, this results in the environment being exposed to carbon dioxide from burning garbage. In Nyalindung Village, many of the people make a living as breeders and farmers, where farmers buy their agricultural crops from Sukabumi City, which is quite far from Nyalindung Village, as well as breeders who buy chicken feed from cities which are quite far and expensive. To reduce organic waste, this community service will conduct training on how to process organic waste into compost so that it can be used by farmers, and the use of organic waste for magot cultivation so that it can be used by chicken breeders as high protein feed. The target output of this community service is the community, farmers and breeders can make fertilizer and animal feed based on magot Keywords: waste, organic, magot, compost Abstrak Sampah organik yang berasal sisa makanan sehari-hari di masyarakat belum dimanfaatkan dengan baik, masyarakat masih mennyatukan sampah organik dan sampah non organik yang kemudian dibakar, hal tersebut mengakibatkan Lingkungan terpapar karbon dioksida dari pembakaran sampah. Di Desa Nyalindung Masyarakatnya banyak berpencaharian sebagai peternak dan petani, Dimana para petani untuk memupuk tanaman pertaniannya membeli dari Kota Sukabumi yang jaraknya cukup jauh dari Desa Nyalindung, begitu pula dengan Peternak membeli pakan ayam dari kota yang jaraknya cukup jauh dan mahal. Untuk mengurangi sampah organik, pada pengabdian Masyarakat ini akan dilakukan pelatihan cara pengolahan sampah organik menjadi pupuk kompos agar bisa dimanfaatkan oleh petani, dan pemanfaatan sampah organik untuk budidaya magot agar dapat dimanfaatkan oleh para peternak ayam sebagai pakan berprotein tinggi. Target Luaran dari pengabdian masyarakat ini adalah masyarakat, para petani dan peternak dapat membuat pupuk dan pakan ternak berbasis magot Kata Kunci: sampah, organik, magot, kompos
Synthesis and Characterization of PANI/ZnO Composites: Structure and Conductivity Analysis Supervised Fitri Khairani Nasution; Lela Mukmilah Yuningsih; Devi Indah Anwar
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12910

Abstract

Technological advances have accelerated the development of functional materials for sensing applications. Polyaniline (PANI) is a conductive polymer with attractive electrical properties, but its gas-sensing performance remains limited. This study aimed to synthesize a PANI/ZnO composite and evaluate its structural and electrical characteristics as a potential gas-sensing material. The composite was prepared by interfacial polymerization and characterized using Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and electrical conductivity measurements. FTIR and XRD analyses confirmed the successful formation of the PANI/ZnO composite through the presence of characteristic functional groups and crystalline phases of both PANI and ZnO, indicating effective interaction between the two materials. The composite exhibited an electrical conductivity of 1.038 × 10⁻⁵ S/cm, demonstrating semiconducting behavior suitable for sensing applications. The incorporation of ZnO into the PANI matrix is considered to improve the structural characteristics of the composite while maintaining its electrical conductivity. These findings confirm the successful synthesis of the PANI/ZnO composite and indicate its potential as an active material for gas sensor development. Nevertheless, further studies are required to evaluate its gas-sensing performance, including sensitivity, selectivity, response time, and long-term stability under various operating conditions.
Co-Authors Abbas, Basril Abdul Hamid Arrazi Abdul Zalal Aneu Aryani Pratiwi Basril Abbas Dikdik Mulyadi Elsya Putri Winata eri rizki hariyadi Eva Fauziah F. Lukitowati Fitri Khairani Nasution Fitri Khairani Nasution Fitri Khairani Nasution Giat, Sulistioso Giat S Hadi Kusuma Haryadi, Eri Rizki Hayati, Mila Nurmala Ine Nuhaeroh Iqlima Nurfadilah Lela Lailatul Khumaisah Lela Mukmilah Yuningsih Lela Mukmilah Yuningsih Lukitowati, F. Neneng Nurbaeti Nur Laila Arizal Nur Laila Arizal P, M Seva Andreas Reni Mulyani Saepul Zaman M Sudirman Sudirman Sudirman, Sudirman Sulistioso Giat S Giat Supendi, Arif Ulfa Fitri A Winarti, Sri Ayu Yuniarti, Nia