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All Journal Jurnal Pengolahan Hasil Perikanan Indonesia Agrikultura Bionatura IPTEK The Journal for Technology and Science Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat JFA (Jurnal Fisika dan Aplikasinya) Majalah Farmasetika Jurnal Material Kedokteran Gigi PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Jurnal Sains dan Teknologi Farmasi Indonesia Jurnal Ilmu dan Inovasi Fisika Journal of The Physical Society of Indonesia
Camellia Panatarani
Department Of Physics, Faculty Of Mathematics And Natural Sciences, Universitay Of Padjadjaran, Sumedang, West Java, INDONESIA.
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Dentistry Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Other

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Effect of Calcination Temperature on the Crystallite Sizes and Stability of ZnO Nanoparticles Synthesized via Green Method Using Eucalyptus (Melaleuca leucadendra) Leaf Extract Cahyani, Intan Sophia; Nurmalasari, Devi; Panatarani, Camellia
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 9, No 2 (2025)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jiif.v9i2.64982

Abstract

Synthesis of zinc oxide (ZnO) nanoparticles is a growing research field with wide applications in electronic equipment. pharmaceuticals. optics. and food packaging. This study aims to investigate the effect of calcination temperature on the cristallite size and stablity of ZnO nanoparticles synthesized by the sol-gel method with and without the addition of eucalyptus leaf extract (Melaleuca leucadendra). The calcination process was carried out at temperatures of 400°C, 600°C, and 800°C. Sample characteristics were observed using XRF, FTIR, XRD, PSA, ZETA, and PL. XRD characterization showed that all samples had a hexagonal wurtzite crystal structure, with increasing temperature resulting in higher crystallinity and larger crystallite sizes, reaching 78.71 nm at 800°C for the sample without extract and 32.81 nm for the sample with extract. PSA analysis showed that the particles with extract had a more uniform size distribution, especially at 800°C. The zeta potential values ranged from -43mV to -57mV, indicating good colloidal stability. UV-Vis spectra showed that the energy of the exclusion band (Eg) increased with temperature, with the highest value (3.52eV) in the sample without extract at 800°C. These results indicate that the calcination temperature plays a crucial role in improving the crystal quality and particle stability. Meanwhile, the addition of eucalyptus leaf extract acts as a natural stabilizing agent that helps reduce crystal defects. Keywords: ZnO nanoparticles, calcination temperature, eucalyptus leaf extract, crystal size, particle stability
Synthesis of rGO-TiO2 Composite for Al-ion Battery with Enhanced Electrical Conductivity Afian, Ruli; Faizal, Ferry; Panatarani, Camellia; Joni, I Made
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.87-97.2025

Abstract

Alternative batteries to lithium-ion are attracting growing attention due to the urgent demand for high energy density and limited lithium resources. Aluminum-ion (Al-ion) batteries are promising since aluminum is abundant, recyclable, and inexpensive. They also provide theoretically high specific energy and power through a three-electron redox reaction. However, challenges remain because no positive electrode material has yet shown efficient and reversible aluminum-ion storage. This study reports the synthesis of a reduced graphene oxide–titanium dioxide (rGO–TiO₂) composite and its evaluation as an electrode for Al-ion batteries. The rGO–TiO₂ composites were prepared by hydrothermal reaction with TiO₂ contents of 2, 5, and 10 wt.%. Characterization using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) confirmed that graphite oxide (GO) was successfully reduced to rGO, as indicated by a peak at 2θ = 24.30°. Electrochemical testing of rGO–TiO₂ based Al-ion batteries showed improved ion diffusivity of 1.39 × 10⁻⁶ – 3.83 × 10⁻⁶ cm/s and charge–discharge capacities of 6.9–7.2 mAh/g at 1C (0.1–0.3 mA·g⁻¹). These results demonstrate the key role of enhanced ion diffusivity in advancing high-performance Al-ion batteries.
Co-Authors Afian, Ruli Akhyar Dyni Zakyah Cahyani, Intan Sophia Desak Made Malini Devi Nurmalasari Dwindra Wilham Maulana Eddy Afrianto Elin Karlina Elisah Fiyanih Emma Rochima Faizal, F. - Faizal, Ferry Fitrilawati Fitrilawati I Made Joni I. M. Joni Joni, I.M. - Khalistia, Sarah Firka Loli Yusastri Maulana, Dwindra Wilham Melanie Melanie, Melanie Meylani Sutoro Mia Miranti Rustama Nina Djustiana P. Wulandari PUTRI, AMARIS EVANIA Renny Febrida Revika - Rachmaniar Rustam Effendi Siregar Ryan Prasetiyo Taofik Rusdiana Teguh Husodo Tuti Susilawati Ujang Subhan Wawan Hermawan Yoga Windhu Wardhana