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All Journal Kappa Journal PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Nurfina Yudasari
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Astronomy Electrical & Electronics Engineering Energy Physics Other

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EFFECT OF HYDROTHERMAL TREATMENT DURATION ON THE PHOTOCATALYTIC PERFORMANCE OF ZINC OXIDE (ZNO) NANORODS FOR WASTEWATER PURIFICATION: PENGARUH LAMA PERLAKUAN HIDROTERMAL TERHADAP KINERJA FOTOKATALIK ZINC OXIDE (ZNO) NANORODS UNTUK PEMURNIAN AIR LIMBAH Muhammad Fajar Setiawan; Iwan Sugihartono; Nurfina Yudasari
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA21

Abstract

Zinc Oxide (ZnO) has been extensively developed in the field of wastewater treatment as a photocatalyst to degrade dye contaminants. The photocatalytic efficiency of ZnO can be enhanced by modifying its nanostructure, particularly by synthesizing ZnO in the form of nanorods. In this study, a simple hydrothermal method was used to synthesize ZnO nanorods and evaluate their effectiveness in degrading textile dye wastewater, using rhodamine B (RhB) and methylene blue (MB) as model pollutants. Zinc sheets with a thickness of 0.1 mm were treated hydrothermally in an autoclave containing 50 ml of deionized water at 95°C for 8, 16, and 24 hours. Subsequently, each sample was analyzed for its morphological and structural characteristics before being immersed in RhB and MB solutions with a concentration of 5 ppm and exposed to UV light at a wavelength of 352 nm and an intensity of 900–1000 mW/cm2. The degradation rates of RhB were found to be 63.4% for ZnO-8, 94% for ZnO-16, and 79.9% for ZnO-24, while for MB, they were 74.3% for ZnO-8, 75% for ZnO-16, and 68% for ZnO-24. These results indicate that ZnO synthesized hydrothermally for 16 hours exhibited superior degradation performance for both rhodamine B and methylene blue compared to the 8-hour and 24-hour treatments.
EFFECT OF ETHANOL CONCENTRATION ON ZnO NANORODS SYNTHESIZED USING THE HYDROTHERMAL METHOD FOR PARAQUAT WASTE DEGRADATION: PENGARUH KONSENTRASI ETANOL TERHADAP ZNO NANOROD YANG DISINTESIS DENGAN METODE HIDROTERMAL UNTUK DEGRADASI LIMBAH PARAQUAT Bintang Ramadhan; Iwan Sugihartono; Nurfina Yudasari
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA24

Abstract

Semiconductor photocatalysts such as ZnO nanorods have been extensively studied for the degradation of water pollutant waste due to their simple, inexpensive, and environmentally friendly process. ZnO nanorods were successfully synthesized using the hydrothermal method on zinc foil substrates with ethanol concentration variations of 10%, 30%, and 50%. The hydrothermal process was conducted for 16 hours at a temperature of 95°C. ZnO nanorods were tested as photocatalysts in a paraquat solution with a concentration of 4 ppm under UV A-B tube luminescent (TL) light for 120 minutes. UV-Vis spectroscopy testing was performed every 30 minutes during the photocatalysis process to determine the photocatalytic efficiency of ZnO nanorods in degrading paraquat waste. The UV-Vis test results showed the best degradation at 30% ethanol variation with 34% at λ 250 nm.
EXTRACTION AND ABSORBANCE PROPERTIES TEST OF OIL FROM SACHA INCHI SEEDS (PLUKENETIA VOLUBILIS L.): EKSTRAKSI DAN UJI SIFAT ABSORBANSI MINYAK DARI BIJI TANAMAN SACHA INCHI (PLUKENETIA VOLUBILIS L.) Selvi Puspita Dewi; Agus Setyo Budi; Jaja Jamaludin; Rahmat Setiawan Mohar; Nurfina Yudasari; Iwan Sugihartono
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1301.FA31

Abstract

The seeds of the sacha inchi plant (Plukenetia volubilis L.) have been extracted using the cold pressing method at a temperature of 45°C and a pressure of 600 bar or 60 MPa. Seeds come from sacha inchi plants grown at an altitude of 200 and 500 masl each with an oil volume of 100 ml. Testing of absorbance properties will be carried out using the UV-Vis spectrophotometer technique. So that the absorbance spectrum pattern are expected to provide information on the characteristics of the substance content possessed by the sacha inchi plant, namely lipids/fatty acids, proteins, tocopherols, phytosterols, phenolic components, fiber, antioxidants, carbohydrates, vitamins, polyphenols, and minerals.
Pengaruh Dopping Mn Pada Semikonduktor AZO Terhadap Laju Fotodegradasi Pewarna Tekstil Congo Red Menggunakan Radiasi UV A Krisandi, Aprilion; Heru Harsono; Nurfina Yudasari
Kappa Journal Vol 8 No 2 (2024): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i2.25497

Abstract

Pengujian fotodegradasi pewarna tekstil Congo Red telah berhasil dilakukan menggunakan agen AZO dan AZOMn. Material tersebut disintesis terlebih dahulu disintesis menggunakan metode kopresipitasi dengan formulasi Zn0,95-xAl0,05Mnx dengan nilai x sebesar 0 dan 0,01. Material hasil modifikasi tersebut diuji menggunakan spektrometer reflektan (DRS) untuk mendapatkan nilai relektansi yang digunakan dalam proses perhitungan nilai energi gap dengan bantuan persamaan Kulbelka Munk. AZO dengan konsentrasi Al 5% wt dan Mn 0% wt memiliki energi gap sebesar 3,290 eV dan AZOMn dengan konsentrasi Al 5% wt dan Mn 0,1% wt memiliki energi gap 3,279 eV. Aktivitas fotokatalis AZO dan AZOMn telah diuji menggunakan sumber radiasi sinar UV A dengan puncak serapan Congo Red 480 nm selama 2 jam. Dari hasil karakterisasi, kedua agen fotokatalis ini mampu mendegradasi limbah pewarna tekstil Congo Red dengan persentase AZO dan AZOMn beturut – turut 97,9% dan 67,6%. Laju fotodegradasi juga menampilkan pola yang sama yaitu material AZO memiliki kelajuan fotodegradasi sebesar 0,03504/menit sedangkan material AZOMn memiliki kelajuan fotodegradasi sebesar 0,00759/menit. Nilai ini menunjukkan bahwa AZO memiliki kemampuan fotodegradasi lebih baik dibandingkan dengan AZOMn dalam limbah pewarna tekstil Congo Red
ANALISIS CELAH ENERGI OPTIK NANOROD ZINC OXIDE YANG DITUMBUHKAN PADA ZINC FOIL MENGGUNAKAN TEKNIK HIDROTERMAL Anindita Prameswari Safitri; Adinda Salsabila Khansa; Nurfina Yudasari; Iwan Sugihartono
Joint Prosiding IPS dan Seminar Nasional Fisika Vol. 14 No. 1 (2026): Joint Prosiding IPS dan Seminar Nasional Fisika
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1401.FA06

Abstract

This study reports the synthesis and optical characterization of zinc oxide (ZnO) nanorods grown on zinc foil substrates via the hydrothermal method. The objective is to investigate the effect of growth duration on the morphology and optical band gap of ZnO. The synthesis was conducted at 95 °C for 4, 8, 12, 16, 20, and 24 hours, using Zn foil as both the substrate and Zn²⁺ source. Characterizations were performed using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and UV-Vis Diffuse Reflectance Spectroscopy (DRS). The results show that all samples exhibit a wurtzite crystal structure with a dominant (002) orientation. The nanorod morphology becomes denser and more uniform at growth durations of 12–24 hours. The band gap increased from 3.11 eV to 3.24 eV, with stable values observed between 12 and 24 hours. Therefore, hydrothermal growth time influences the structural and optical properties of ZnO, with 16–24 hours identified as the optimal duration for optoelectronic applications.
Co-Authors Adinda Salsabila Khansa Agus Setyo Budi Akhmad Futukhillah Fataba Alaih Anindita Prameswari Safitri Annisa Feby Nur Rahmasari Bintang Ramadhan Djoko Triyono Heru Harsono Iwan Sugihartono Jamaludin, Jaja - Krisandi, Aprilion Muhammad Fajar Setiawan Rahmat Setiawan Mohar Selvi Puspita Dewi