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Ivonne Telussa
Chemistry Department, Science And Mathematics Faculty, Universitas Pattimura
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Enhancing Dye-Sensitized Solar Cell Efficiency Using Photosynthetic Pigments from Navicula sp. TAD Telussa, Ivonne; Maahury, Mirella Fonda; Lilipaly, Eka Rahmat Mahayani Anthonia Putera; Latuihamallo, Threbelin Anacovic Lawdrian
Jurnal Teknik Kimia dan Lingkungan Vol. 9 No. 2 (2025): October 2025
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v9i2.7179

Abstract

Microalgae Navicula sp. TAD is a microscopic plant that has the potential to serve as an alternative source of pigments, requiring relatively short cultivation time, making it suitable for use as a sensitizer in dye-sensitized solar cells. This research aimed to isolate, characterize, and identify the photosynthetic pigments of Navicula sp. TAD, and subsequently test its photoelectric capability as a sensitizer material in solar cells. The study involved cultivating Navicula sp. TAD cells to obtain biomass, isolating pigments from dry biomass, purifying pigments using column chromatography techniques, characterizing pigments by scanning visible light absorption patterns, and fabricating solar cells with TiO2 paste, followed by testing the photoelectric capabilities of the solar cells. From the research, pigments such as β-carotene, chlorophyll a, xanthophyll, and chlorophyll c were obtained, with chlorophyll a and carotenoid contents of 29.9698 μg/mL and 18.4255 μg/mL, respectively. Solar cells sensitized with photosynthetic pigments showed the best photoelectric performance with crude pigment extract at a concentration of 30×10³ ppm, yielding Short-circuit current density (ISC) 1.93×10⁻⁵ A;  open-circuit voltage (VOC) 0.0465 V; fill factor (FF).58; and efficiency (η) 8.33×10⁻² %. Meanwhile, variations in pigment concentration of chlorophyll and xanthophyll at a ratio of 0:100 yielded ISC 9.96×10⁻⁵ A; VOC 0.1004 V; FF 0.45; and η 7.24×10⁻¹ %.
Introduction to Drinking Water Quality Standards for Communities in Poka Village, Teluk Ambon District Rumpakwakra, Ervina; Hattu, Nikmans; Jaya, Gede Wiratma; Nggolaon, Delpina; Rikumahu, Marcia Violetha; Thohirah, Afifah; Silahooy, Stevi; Latupeirissa, Jolantje; Telussa, Ivonne; Pada, Samuel Simra; Kololu, Micky
Jurnal Pengabdian Magister Pendidikan IPA Vol 7 No 1 (2024): Januari - Maret
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v7i1.6564

Abstract

The quality of clean water used has been a top priority to maintain health and fulfill daily needs. There are many sources of clean water, including well water, bottled water, gallon water and PDAM water. The use of clean water in Poka Village still uses well water and gallon water, so there is concern among the community regarding the cleanliness and quality of the water. Therefore, this service is carried out to help answer public anxiety by introducing Drinking Water Quality Standards that have been determined in the Republic of Indonesia Minister of Health Regulation No. 492/MENKES/PER/IV/2010. Apart from that, we also show findings of polluted well water and also provide solutions on how to care for wells. During material delivery activities, we use an educational and participatory approach with the main focus being the community. The result of this service activity is that the community in Poka Village has good knowledge regarding drinking water quality standards so that it is hoped that the community can apply them in their daily lives.
Sosialisasi dan Edukasi Interaktif Tentang Resistensi Antibiotik Bagi Siswa SMA Negeri 6 Maluku Tengah Usman, Dwi Anggara Putri; Telussa, Ivonne; Gaspersz, Nelson; Rutu, Irwan; Lakoan, Milda Rianty
Innovation for Community Service Journal Vol 3 No 2 (2025): Oktober 2025
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v3i2.22918

Abstract

Resistensi antibiotik merupakan ancaman serius bagi kesehatan masyarakat karena dapat menurunkan efektivitas pengobatan infeksi. Rendahnya pemahaman masyarakat, terutama remaja, terhadap penggunaan antibiotik yang benar menjadi alasan penting dilaksanakannya kegiatan pengabdian ini. Tujuan kegiatan adalah meningkatkan pengetahuan dan kesadaran siswa SMA Negeri 6 Maluku Tengah mengenai penggunaan antibiotik secara rasional. Metode yang digunakan meliputi tiga tahap, yaitu pra-kegiatan (observasi dan koordinasi), pelaksanaan (sosialisasi, diskusi interaktif, dan kuis edukatif), serta evaluasi (pre-test dan post-test). Kegiatan diikuti oleh 30 siswa dan menunjukkan peningkatan pengetahuan yang signifikan, dari 30% sebelum kegiatan menjadi 80% setelah kegiatan. Siswa juga menunjukkan perubahan sikap positif terhadap penggunaan antibiotik dengan lebih berhati-hati dan tidak menggunakan obat tanpa resep dokter. Hasil ini menunjukkan bahwa pendekatan edukatif interaktif efektif untuk meningkatkan literasi kesehatan di kalangan pelajar. Kegiatan ini penting karena memberikan dampak nyata terhadap peningkatan kesadaran generasi muda dalam mencegah resistensi antibiotik dan berpotensi dikembangkan menjadi program berkelanjutan berbasis sekolah di wilayah kepulauan.
Utilization of Diatom Frustule Waste from Navicula sp. TAD as Photoelectrode Material for Enhancing the Efficiency of Dye-Sensitized Solar Cells (DSSC) Telussa, Ivonne; Tehubijuluw, Hellna; Lilipaly, Eka Rahmat Mahayani Anthonia Putera; Malle, Dominggus; Amarduan, Riona Magdalena
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.632-642

Abstract

Navicula sp. TAD is a microalga with silica-based cell walls, offering potential to improve photon interaction in dye-sensitized solar cells (DSSCs). This study combined Navicula sp. TAD frustules with TiO2 to fabricate DSSC working electrodes. The objectives were to isolate and characterize the frustules, optimize the TiO2–frustule ratio, and evaluate photoelectric performance. The workflow consisted of cultivating Navicula sp., isolating pigments and frustules, fabricating solar cells with varied electrode compositions, and performing photoelectric testing under a solar simulator. Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), and Scanning Electron Microscope (SEM) analysis confirmed that the frustules possess nanoporous surfaces and exhibit Si–O–Si and Si–OH functional groups. Electrodes incorporating TiO2–frustule blends showed compact pore networks, along with additional functional groups. Performance screening across compositions identified an optimal TiO2–frustule ratio of 40:60, which delivered an efficiency of 10.51%, a short-circuit current density of 0.673 A, an open-circuit voltage of 301.8 mV, and a fill factor of 0.32. These findings indicate that frustule-enabled light management and surface chemistry can jointly enhance dye loading and charge collection in DSSC photoanodes relative to TiO2 alone.
Co-Authors Alfa Musa Imanuel Efruan Amarduan, Riona Magdalena Bijang, Chaterina Manukpadang Catherina M. Bijang DOMINGGUS MALLE Dwi Anggara Putri Usman, Dwi Anggara Putri Eirene G Fransina Eirene G. Fransina Ervina Rumpakwakra Fensia Analda Souhoka Fransina, Eirene G. Gaspersz, Nelson Gede Wiratma Jaya, Gede Wiratma Hanoch J Sohilait Hasanela, Nurani Hattu, Nikmans Hellna Tehubijuluw Joisana Singerin Jolantje Latupeirissa Jolantje Latupeirissa Kapelle, Imanuel B. D. Kololu, Micky Lakoan, Milda Rianty Lapu, Petrus Latuihamallo, Threbelin Anacovic Lawdrian Latupeirissa, Jolantje Lilipaly, Eka Rahmat Mahayani Anthonio Putera Maahury, Mirella Fonda Marcia Violetha Rikumahu Marsela Susan Laratmase Matheis F.J.D.P. Tanasale Nasution, Annio Indah Lestari Nggolaon, Delpina Nikmans Hattu Nusaly, Windy Natalia Pada, Samuel Simra Pentury, Evangeline Pormes, Ludwina R, Irwan Rahayu Rahayu Rosmawaty Harahap Rosmawaty Rosmawaty Sahalessy, Arielno Salamony, Meilita SAMUEL M. TARIBUKA Sekewael, Serly J. Sekewael, Serly Jolanda Semuel S. Pada Serly J. Sekewael Seumahu, Cecelia A. Shielda Natalia Joris Siahaya, Antho Netty Silahooy, Stevi Singerin, Joisana Sipahelut, Sophia Grace Sohilait, Mario Rowan Stephanie P. Sohilait Stephanie Sohilait Taipabu, Muhammad Ikhsan Thohirah, Afifah Yusthinus T. Male