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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) Communications in Science and Technology
Anissa Fitria
Program Studi Pendidikan Kimia, Program Pascasarjana, Universitas Negeri Yogyakarta
Education Engineering Mathematics

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Chemistry Structure Sheet sebagai Media Pembelajaran Kimia Berbasis Augmented Reality pada Materi Struktur Atom Asmi Aris; Anissa Fitria; Luthfan Ihtisyamuddin
Jurnal Pendidikan Matematika dan Sains Vol 8, No 2 (2020): December 2020
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpms.v8i2.42773

Abstract

Penelitian ini bertujuan mengetahui rancangan dan kelayakan media pembelajaran Chemistry Structure Sheet (CSS) berbasis Augmented Reality (AR) pada materi struktur atom untuk peserta didik SMA kelas X. Jenis  penelitian yang digunakan adalah research and development (RD) dengan model pengembangan pressman waterfall model. Prosedur pengembangan mencakup analisis, perencanaan, permodelan, dan konstruksi. Desain pengembangan produk yang diperoleh berdasarkan pada penilaian ahli materi dan media. Hasil penelitian menunjukkan bahwa rancangan CSS terdiri dari aplikasi Android yang dilengkapi dengan fitur penggunaan pada aplikasi berbasis AR, modul yang berisi materi pelajaran, dan kuis. Berdasarkan uji kelayakan media yakni validasi materi memperoleh hasil sebesar 92,5% dengan kategori layak dan untuk validasi ahli materi sebesar 80% dengan kategori layak untuk digunakan. Peserta didik merespon dengan sangat baik pada penggunaan media CSS dalam mendukung belajar mandiri. Media CSS layak digunakan pada proses belajar mengajar oleh pendidik dan peserta didik.
Synthesis, characterization and performance of Ni/mesoporous silica - NH\(_2\)/mesoporous silica and Ni-NH\(_2\)/mesoporous silica as bifunctional catalyst in one step conversion of waste palm oil to biodiesel Fitria, Anissa; Trisunaryanti, Wega; Triyono; Santoso, Iman
Communications in Science and Technology Vol 9 No 2 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.2.2024.1483

Abstract

Sidoarjo mud is a natural material resulted from an unusual natural phenomenon and is rich in silica contents. So far, no studies have been reported about mesoporous silica from Sidoarjo Mud, which is a supported catalyst for one-step conversion to biodiesel. This study aims to explore synthesis, characterization, and applications to demonstrate the heightened activity and selectivity in the esterification- transesterification of waste palm oil into biodiesel, utilizing a one-step method aligned with the principles of green chemistry using two bifunctional catalysts (Ni/MS - NH2/MS and Ni-NH2/MS). The bifunctional catalysts were prepared by means of hydrothermal, wet impregnation, and grafting methods. The highest biodiesel yield (78.77%) was achieved under the condition of 65 °C, 3 h, methanol to oil ratio 21 : 1, and 3wt% of Ni/MS - NH2/MS as the catalyst. The catalyst was able to yield a conversion level as good as ~72% in the 3rd cycle after regeneration. The research demonstrates the industrial relevance of the catalyst, offering a sustainable solution for biodiesel production and waste management.
Co-Authors Aminuyati Asmi Aris Luthfan Ihtisyamuddin Triyono Wega Trisunaryanti