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All Journal Jurnal Pendidikan Tari Greensusmater
Amanda, Tia
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Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Materials Science & Nanotechnology

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MENUMBUHKAN KREATIVITAS MEMBUAT GERAK TARI DENGAN MODEL PEMBELAJARAN LINGKUNGAN DI PEMBELAJARAN OLAH TUBUH BAGI SISWA SMK Amanda, Tia
Jurnal Pendidikan Tari Vol 1 No 01 (2020): Tari dan Pendidikan Tari
Publisher : Program Studi Pendidikan Tari FBS UNJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JPT.112

Abstract

This paper describes the results of research to improve students' creativity in making dance movements through the application of an environmental learning model, for class X students in physical exercise learning at SMK Negeri 57 Jakarta. The goal is to increase data on student creativity improvement. This research was conducted using the Classroom Action Research method and took place from September to December 2019, with a cycle of planning, observation, and reflection. Data obtained by observation, interview and questionnaire techniques. The results of this study indicate that creativity in students' dance is 70.83 (63.88%) from the average in the first cycle, and 88.5 (91.66%) from the average in the second cycle.
Development and materials characterization of hydrothermally grown niobium-doped BiVO4 for ciprofloxacin and methylene blue degradation Kurnia, Nadiya Rifqah; Amanda, Tia; Nurfitria, Rima; Aflaha, Rizky; Widakdo, Januar; Rianjanu, Aditya
Greensusmater Vol. 2 No. 2 (2025)
Publisher : Green and Sustainable Materials Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62755/greensusmater.2025.2.2.55-61

Abstract

This study reports the synthesis and characterization of niobium-doped BiVO4 (NbX-BiVO4, X = 0, 2, 4, 6 mol%) photocatalysts via a hydrothermal method, aimed at enhancing the degradation of organic pollutants under UV irradiation. X-ray diffraction (XRD) analysis confirmed the preservation of the monoclinic BiVO4 structure in all samples, although minor secondary features were detected in doped compositions. Field emission scanning electron microscope (FESEM) imaging revealed progressively rougher, nanostructured surfaces with increasing Nb content, while UV-Vis and photoluminescence (PL) spectroscopy indicated modified band structures and reduced recombination rates. Photocatalytic performance was evaluated using ciprofloxacin (CIP) and methylene blue (MB) as model pollutants. For CIP, the highest activity was achieved by Nb6-BiVO4 (k value of 0.09 min‒1 g–1), attributable to enhanced charge separation and increased surface texture. In contrast, MB degradation favored the undoped BiVO4 (k value of 0.29 min‒1 g–1) due to stronger dye adsorption, despite the optical improvements in doped samples. The findings demonstrate that Nb doping improves BiVO4 photocatalytic activity through synergistic structural and electronic effects, with pollutant-specific responses highlighting the importance of matching catalyst design to target contaminant properties.
Co-Authors Aflaha, Rizky Januar Widakdo Kurnia, Nadiya Rifqah Nurfitria, Rima Rianjanu, Aditya