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All Journal JFA (Jurnal Fisika dan Aplikasinya) Science and Technology Indonesia Jurnal Teori dan Aplikasi Fisika Newton-Maxwell Journal of Physics TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Greensusmater
Eka Nurfani
Department Of Materials Engineering, Institut Teknologi Sumatera, Lampung 35365, Indonesia
Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Pengaruh Molaritas dalam Teknik Spray terhadap Performa Fotodetektor Berbasis ZnO Okky Fajar Tri Maryana; Anisa Fitri; Mohamad Samsul Anrokhi; Wahyu Solafide Sipatuhar; Eka Nurfani
Jurnal Teori dan Aplikasi Fisika Vol 9, No 1 (2021): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v9i1.2706

Abstract

ZnO:Fe thin films has been successfully carried out by a simple spray pyrolysis method. The thin film was grown on ITO (Indium Tin Oxide) substrate with a metal-semiconductor-metal (MSM) structure. ZnO:Fe thin film characters as photodetector application include morphological structure, and electrical properties. SEM image results show the molarity difference can affect the particle size. The Current-Voltage (I-V) characterization shows that different solvent effects and molarity give different sensitivity. Sample ZnO:Fe 0.5M Ethanol has the highest sensitivity compared to other samples because it has a fairly low current and high bright current.
Structure and Photo-response Properties of FZO/ITO Thin Film Amrina Mustaqim -; Yeli Krisdayanti Lature; Mohamad Samsul Anrokhi; Koko Friansa; Retno Maharsi; Eka Nurfani
Newton-Maxwell Journal of Physics Vol. 5 No. 1: April 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v5i1.33178

Abstract

The structure and photo-response properties of ZnO:Fe/ITO thin film synthesized using  a pyrolysis method were studied in this work. ZnO:Fe/ITO thin film referred to as FZO/ITO was characterized using the X-ray diffraction (XRD) technique and current-voltage (I-V) measurements. The XRD analysis showed that the detected peaks at 30.23°, 35.15°, 37.36°, 45.18°, and 50.54° belonged to the ITO cubic phase. The I-V analyses showed that the sample had the saturation current, Schottky barrier, and sensitivity of 16.24 µA, 0.4771, and 0,90 µA respectively. The FZO/ITO gave a good response toward the light.
Electrospun Rare-Earth Metal Oxide (CeO2 ) Nanofiber for the Degradation of Congo Red Aqueous Dyes Rianjanu, Aditya; Haloho, Trivendi; Pasaribu, Joshua Leonardo; Fahmi, Achmad Gus; Nurfani , Eka; Sipahutar, Wahyu Solafide; Yudistira, Hadi Teguh; Taher, Tarmizi
Science and Technology Indonesia Vol. 10 No. 1 (2025): January
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.2025.10.1.123-130

Abstract

The persistent presence of organic dyes like Congo Red (CR) in wastewater poses a significant environmental challenge. In this study, CeO2 nanofibers (CeO2-NF) were successfully synthesized via electrospinning followed by calcination as potential photocatalysts for the degradation of CR pollutants in aqueous solutions. The synthesized nanofibers were characterized using field emission scanning electron microscopy coupled with energy dispersive X-Ray Spectroscopy (FESEM-EDS) for morphological and elemental analyses, X-Ray Diffraction (XRD) for crystalline structure, and Fourier transform infrared (FTIR) spectroscopy for molecular properties. Photocatalytic degradation experiments were conducted under UVC light irradiation, with the CeO2-NF1, CeO2-NF2, and CeO2-NF3 samples achieving CR degradation percentages of 95.6%, 96.9%, and 95.2%, respectively, after 130 minutes of reaction time. Kinetic analysis revealed that the photocatalytic degradation followed pseudo-first-order kinetics, with rate constants of 0.020 min-1, 0.024 min-1, and 0.025 min-1 for CeO2-NF1, CeO2-NF2, and CeO2-NF3, respectively, highlighting the superior performance of CeO2-NF3. These results indicate that CeO2NF could serve as an effective material for the photocatalytic degradation of organic dyes, offering a promising approach for wastewater treatment applications.
Blueshift of the optical bandgap in ZnO films by controlling the substrate temperature Nurfani, Eka; Chotimah, Cindy; Anrokhi, M.S.; Kadja, G.T.M.; Sipahutar, W.S.; Mustaqim, A.; Rianjanu, A.
Jurnal Fisika dan Aplikasinya Vol 21, No 1 (2025)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v21i1.20160

Abstract

This study investigates the growth of ZnO thin films using the spray pyrolysis method, focusing on the effect of substrate temperature on the optical bandgap. By varying the deposition temperature from 300 to 500 °C, we aim to understand how temperature influences the optical properties of ZnO films. The films were characterized using X-ray diffraction (XRD) and UV-visible spectroscopy (UV-Vis). At 300 °C, the absorption was lowest, and the optical bandgap increased from 3.20 eV at 300 °C to 3.70 eV at 500 °C. These findings are crucial for developing ZnO materials for optoelectronic applications using an efficient and cost-effective deposition method.
Role of Ni dopant on the improvement of ZnO-based reusable photocatalytic materials Nurfani, Eka; Firdaus, Azka R.; Triyadi, Dedi; Rianjanu, Aditya
Greensusmater Vol. 1 No. 2 (2024)
Publisher : Green and Sustainable Materials Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62755/greensusmater.2024.1.2.51-56

Abstract

This study investigates the impact of Ni doping on the enhancement of ZnO-based reusable photocatalytic materials. Ni concentrations derived from nickel chloride hexahydrate were 0 wt% (ZN-1), 1 wt% (ZN-2), and 3 wt% (ZN-3). Field-emission scanning electron microscopy (FESEM) analysis reveals a significant morphological transformation from flower-like structures in pure ZnO to nanoridges in Ni-doped ZnO. X-ray diffraction data indicate a reduction in crystalline quality with Ni incorporation. UV-Vis spectroscopy shows an increase in the bandgap from 3.22 eV for pure ZnO (ZN-1) to 3.34 eV for Ni-doped ZnO (ZN-2 and ZN-3). Photocatalytic efficiency improves markedly, achieving 30%, 60%, and 80% degradation for ZN-1, ZN-2, and ZN-3, respectively, after 1-hour illumination. Notably, the photocatalytic performance remains robust even after five recycling cycles. These findings reveal the potential of Ni-doped ZnO as a cost-effective, reusable, and highly efficient photocatalytic material.
Photocatalytic degradations of organic pollutants in wastewater using hydrothermally grown ZnO nanoparticles Phasa, Agita; Aini, Quratul; Siregar, Muhammad Yasin; Sabilla, Sal; Triyadi, Dedi; Aflaha, Rizky; Khan, Mochammad Ghulam Isaq; Nurfani, Eka
Greensusmater Vol. 1 No. 2 (2024)
Publisher : Green and Sustainable Materials Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62755/greensusmater.2024.1.2.39-43

Abstract

The increasing prevalence of organic pollutants in wastewater poses a significant environmental challenge due to their persistence and harmful effects. Photocatalysis using semiconductor nanoparticles, such as ZnO, has emerged as a promising approach for pollutant degradation, but optimizing the structural and functional properties of these materials remains a critical challenge. In this study, ZnO nanoparticles were synthesized via a hydrothermal method with varying durations (4, 6, and 8 hours) to investigate the impact of synthesis time on their photocatalytic efficiency. The structural and compositional properties were characterized using SEM, XRD, and EDS analyses, revealing that longer synthesis times improve crystallinity and alter the Zn:O atomic ratio, affecting defect density and stoichiometry. Photocatalytic performance was evaluated through the degradation of an organic pollutant under UV illumination. ZnO-6h exhibited the highest rate constant (k=0.017 min−1), outperforming ZnO-4h (k=0.016 min−1) and ZnO-8h (k=0.013 min−1). This superior activity is attributed to an optimal combination of high crystallinity, intermediate morphology, and the presence of oxygen vacancies that enhance charge carrier dynamics. The findings demonstrate that synthesis duration is a critical parameter in tuning the structural and photocatalytic properties of ZnO nanoparticles. This study provides insights into the design of ZnO-based photocatalysts and underscores their potential for environmental remediation. Future research could extend these findings by exploring scalability and pollutant-specific applications, paving the way for more efficient wastewater treatment technologies.
Pemanfaatan Limbah Botol Plastik sebagai Media Tanam Sayuran dengan Metode Irigasi Kapiler Anika, Nova; Harmiansyah, Harmiansyah; Kusmali, Muh; Gumaran, Setyadi; Utami, Nia Saputri; Nurfani, Eka; Pertiwi, Novalia
TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Vol 5 No 1 (2025): TEKNOKREATIF : Jurnal Pengabdian kepada Masyarakat Volume 5 No 1
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M), Institut Teknologi Sumatera, Lampung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/teknokreatif.v5i1.1734

Abstract

Pengelolaan sampah yang baik dan benar merupakan salah satu kunci dalam menjaga kelestarian lingkungan hidup. Semua pihak, pemerintah maupun masyarakat harus berperan aktif dalam mengurangi produksi sampah dan mengelola sampah sesuai dengan ketentuan yang berlaku. Tingkat pendidikan yang relatif rendah serta tidak tersedianya sarana dan prasarana yang memadai dalam pengelolaan sampah menimbulkan degradasi lingkungan. Pelatihan atau transfer ilmu pengetahuan kepada masyarakat sangat diperlukan untuk meningkatkan kepedulian dan wawasan lingkungan. Pengelolaan sampah harus dimulai dari lingkungan terkecil yaitu rumah tangga. Oleh sebab itu, pelatihan pemilahan sampah organik, anorganik, B3 dan pemanfaatan limbah botol plastik sebagai media tanam sayuran dengan metode irigasi kapiler dilaksanakan untuk menambah pemahaman masyarakat mengenai pengelolaan sampah. Mitra kegiatan pengabdian masyarakat adalah warga Desa Banjaran, Kecamatan Padang Cermin Kabupaten pesawaran, Lampung dengan peserta pelatihan umumnya adalah ibu rumah tangga dan petani. Kegiatan pengabdian kepada masyarakat yang dilaksanakan dapat meningkatkan pemahaman masyarakat mengenai pengelolaan sampah dan pemanfaatan limbah botol plastik sebagai media tanam sayuran dengan metode irigasi kapiler. Hal ini dibuktikan dengan hasil pre-test dan post-test yang dilaksanakan. Selain itu, warga juga menunjukkan inisiatif dan antusiasme yang baik selama mengikuti pelatihan yang menunjukkan bahwa masyarakat sangat terbuka, kooperatif dan menyambut baik kegiatan pengabdian masyarakat yang dilaksanakan.
Co-Authors Aflaha, Rizky Amrina Mustaqim Anisa Fitri Anrokhi, M.S. Anrokhi, Mohamad Samsul Chotimah, Cindy Fahmi, Achmad Gus Firdaus, Azka R. Gumaran, Setyadi Hadi Teguh Yudistira, Hadi Teguh Haloho, Trivendi Harmiansyah, Harmiansyah Kadja, G.T.M. Khan, Mochammad Ghulam Isaq Koko Friansa Mohamad Samsul Anrokhi Muh. Kusmali Muhammad Yasin Siregar Mustaqim, A. Nia Saputri Utami Nova Anika Okky Fajar Tri Maryana Pasaribu, Joshua Leonardo Pertiwi, Novalia Phasa, Agita Quratul Aini Retno Maharsi Rianjanu, Aditya Sabilla, Sal Sipahutar, W.S. Sipahutar, Wahyu Solafide Tarmizi Taher Triyadi, Dedi Yeli Krisdayanti Lature