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All Journal Spektra: Jurnal Fisika dan Aplikasinya Unri Conference Series: Community Engagement
Ari Sulistyo Rini
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Aerospace Engineering Humanities Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Eko teknologi untuk pencegahan kebakaran pada lahan gambut di Desa Rimbo Panjang, Kecamatan Tambang, Kampar Saktioto Saktioto; Ari Sulistyo Rini; Rahma Dewi; Deprianto Deprianto
Unri Conference Series: Community Engagement Vol 1 (2019): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.1.434-441

Abstract

Peatland fires can cause emist GHG identification in Rimbo Panjang village, Tambang sub-district, Kampar whre there are community complaints about environmental conditions or smog. The purpose of this activity is to implement the technology of fire prevention on peat land in Rimbo Panjang Village, Tambang District, Kampar Regency, Riau Province. The method applied is Eco Technology with a solidification system which means reducing the pores of peat so that it can extinguish the fire quickly. The other method used is by blocking fire contact with outside air (oxygen) that is by watering using a mixture of detergent. The results obtained from this activity showed that based on the water table on peatland it was found to be varied and included in the category of deep peat, only a small portion in village 1 found a water table at a depth of 20 cm. Based on the condition of the clay layer it also turns out to be found in depths between 2.5 m to 6 meters. Based on the results of observations in the field, the condition of peat in Rimbo Panjang is vulnerable to fire. Fire simulations that have been carried out by making artificial peat conditions which are then combusted show that the Eko Technology method has been able to fire out peatlands quickly.
Enhanced Optical Properties of Ce-Doped ZnO Nanoparticles via A Green Plant-Based Synthesis Approach Simatupang, Mediniah Putri; Ari Sulistyo Rini; Erwin
Spektra: Jurnal Fisika dan Aplikasinya Vol. 10 No. 1 (2025): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 10 Issue 1, April 2025
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.101.03

Abstract

This study investigated the optical properties of Ce-doped ZnO nanoparticles (Ce/ZnO), synthesized using Pandanus ammaryllifolius leaf extract via a green biosynthesis method. Ce doping concentrations of 1%, 2%, and 3% were applied, and the nanoparticles were annealed at 400 °C for two hours. UV-Vis analysis showed a redshift in the annealed samples, with the wavelength increasing from 368 nm to 370 nm, likely due to particle growth after thermal treatment. In contrast, the unannealed samples exhibited a blueshift, with the maximum absorbance wavelength decreasing from 361 nm to 356 nm. The absorbance values were higher in the annealed samples than in the unannealed ones. The band gap energy of doped ZnO samples decreased slightly after annealing, from 3.20–3.22 eV to 3.15–3.19 eV, indicating improved optical properties. FTIR analysis revealed the presence of Ce–O bonds and functional groups, such as O–H and C–H, with sharper peaks in the annealed samples. The novelty of this study lies in utilizing Pandanus ammaryllifolius leaf extract as a natural reducing and stabilizing agent, providing a sustainable and eco-friendly alternative to conventional chemical synthesis methods. The findings suggest that Ce doping enhances the optical properties of ZnO nanoparticles, making them suitable for specific applications in environmental remediation, such as the degradation of organic pollutants, and in technological fields like photocatalytic devices and UV-absorbing materials.
Co-Authors Deprianto Deprianto Erwin Rahma Dewi Saktioto Saktioto Simatupang, Mediniah Putri