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All Journal International Journal of Science and Applied Science: Conference Series Formatif: Jurnal Ilmiah Pendidikan MIPA Eksakta : Berkala Ilmiah Bidang MIPA Optika : Jurnal Pendidikan Fisika Jurnal Sains dan Edukasi Sains Eduproxima : Jurnal Ilmiah Pendidikan IPA JagoMIPA: Jurnal Pendidikan Matematika dan IPA Inornatus: Biology Education Journal Ndrumi : Jurnal Ilmu Pendidikan dan Humaniora
Antonia Fransiska Laka
Universitas Flores
Agriculture, Biological Sciences & Forestry Arts Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Other

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Study of the efficiency of ZnAl2O4 as green nanocatalyst Birhi, Damiana Nofita; Laka, Antonia Fransiska
Inornatus: Biology Education Journal Vol. 4 No. 1 (2024): Inornatus: Biology Education Journal
Publisher : Univeritas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/inornatus.v4i1.584

Abstract

Waste from chemical reactions is still a hot issue to be discussed today. Green chemistry in its concept offers catalysts as an alternative to reducing waste resulting from chemical reactions. This literature study aims to examine the method of making ZnAl2O4 nanocatalysts and doping materials that are more effective in various reactions by considering the advantages and disadvantages of each. The content of the study includes the ZnAl2O4 nanocatalyst synthesis method, combination catalyst, and catalytic effectiveness in chemical reactions. Combustion, sol-gel, co-precipitation, hydrothermal, and microwave are the most common methods in the synthesis of ZnAl2O4. The use of precursors, fuel, and precipitating agents are very important factors when using combustion, sol-gel, and co-precipitation methods. Other factors that need to be considered are the raw material ratio, pH, and calcination temperature. The pH of the solution is 6-9 and the calcination temperature of 600oC – 800oC is the ideal point for producing nanocatalyst. The calcination temperature is lower to 300oC – 500oC when using hydrothermal and microwave as a synthesis method. ZnAl2O4 nanocatalyst has been identified as having good catalytic activity, but not higher than ZnAl2O4 combined with other catalysts. The combination of a catalyst with ZnAl2O4 spinel in hydrogenation, dehydrogenation, esterification, degradation, and organic synthesis has high catalytic activity with a conversion rate and selectivity of >70%.
PENGARUH PENGGUNAAN GAME EDUCAPLAY UNTUK MENINGKATKAN MOTIVASI BELAJAR DAN KEMAMPUAN KOGNITIF PESERTA DIDIK SMP NEGERI 1 ENDE PADA MATERI USAHA DAN ENERGI Makin, Martha Wahan; Yasinta Embu Ika; Antonia Fransiska Laka
Ndrumi : Jurnal Ilmu Pendidikan dan Humaniora Vol 9 No 1 (2026): Ndrumi : Jurnal Ilmu Pendidikan dan Humaniora
Publisher : LPPM Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/ndrumi.v9i1.4568

Abstract

This study aims to analyze the effect of using the Educaplay game on students’ learning motivation and cognitive abilities at SMP Negeri 1 Ende on the topic of Work and Energy. The research employed a one-group pretest–posttest design involving 20 students as the sample. The instruments used in this study were a learning motivation questionnaire and a cognitive ability test. The results showed that after the implementation of the Educaplay game, students’ learning motivation was categorized as high, with an average percentage of 80.2%. In addition, students’ cognitive abilities improved significantly, as indicated by the increase in the mean pre-test score of 58.00 to a mean post-test score of 87.00. The t-test analysis revealed a Sig. (2-tailed) value of 0.000 < 0.05, indicating a significant difference between the pre-test and post-test scores. Therefore, it can be concluded that the use of the Educaplay game has a positive and significant effect on students’ learning motivation and cognitive abilities.
Co-Authors Adrianus Nasar Aloisius Harso An Nisaa Al Mumin Liu Atina Rizanatul Fahriyah Damiana Nofita Birhi Desfi Annisa Donatus Rendo Faustina De Yesu Prisila Abi Hamsa Doa Hari Sutrisno Ilyas Ivo Maldo Eba, Prudensius Makin, Martha Wahan Maria Tensiana Tima Meike Tiya Kusuma Muhammad, Adzkiya Salsabila Philipus Nerius Supardi Richardo Barry Astro Satya Sadhu Valeria Jeluna Vika Puji Cahyani YASINTA EMBU IKA Yulius Saprianus Dala Ngapa