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All Journal POSITRON Jurnal Neutrino : jurnal fisika dan aplikasinya Jurnal Fisika FLUX SEJ (Science Education Journal) Indonesian Physical Review Journal of Banua Science Education SERIBU SUNGAI: Journal of Research and Community Service International Journal of Renewable Energy Development Jurnal Pendidikan MIPA
Suryajaya Suryajaya, Suryajaya
Universitas Lambung Mangkurat
Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences

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GREEN SYNTHESIS OF TIO2 USING ALOE VERA FOR PHOTODEGRADATION IN SASIRANGAN WASTE Asyiah, Noor; Ahmad, Ahmad; Ananda, Tarisa; Muhaemina, Maulanie; Rosadi, Jannesa Tri; Suryajaya, Suryajaya; Safitri, Maya
Indonesian Physical Review Vol. 8 No. 1 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i1.381

Abstract

Green synthesis of TiO2 has been successfully carried out using aloe vera. Aloe vera extract was mixed with TiCl4 while heated to obtain TiO2 powder. The FTIR spectrum showed a peak at 487.67 cm-¹ corresponding to the Ti-O-Ti functional group, which indicates the formation of TiO2 particles. The XRD results showed that the TiO2 crystals were in the anatase phase. SEM images show that the particles tend to be spherical in shape as in the anatase phase. With the Scherer equation, the size of the TiO2 crystal yielded was around 2.3 nm in diameter. The UV-vis spectrophotometer results showed the blue shift of absorption peak at 368 nm or band gap energy of 3.37 eV. A thin layer of TiO2 was made by using the slip casting method. These thin films were applied to methylene blue and sasirangan waste samples for photodegradation tests. The exposure times used were 15, 30, 45, 60, and 75 minutes. The results showed photodegradation of 38.9 % and 4.5 %, respectively, for methylene blue and sasirangan waste.
PjBL-based Green Chemistry Module: Internalizing Creative and Moral Character in the Context of Wetlands Rahayu, Sri; Suyidno, Suyidno; Suryajaya, Suryajaya; Fahmi, Fahmi
SEJ (Science Education Journal) Vol. 9 No. 2 (2025): November
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/sej.v9i2.1706

Abstract

Creative and moral characters developtment is essential in the industrial Era 4.0, but these characters are less integrated in wetland environment-based learning. This study aims to analyze the feasibility of a green chemistry module based on Project-Based Learning (PjBL) to train creative and moral characters in the context of wetlands. This research uses the ADDIE development model. The validation test involved five experts or practitioners, limited trials, and implementation on groups of 15 and 35 students. Data collection utilized module validation instruments, content readability assessments, learning observations, and student responses. The validation results showed that the module had high validity with a score of 90.00. The readability of the module content was very good, with a score of 90.83. Project-based learning can be effectively carried out in limited trials and implementation. Additionally, expressed positive responses regarding of satisfaction, creativity, and moral character. It was concluded that the PjBL-based green chemistry module was feasible for use in training students to develop creative and moral characters in the context of wetlands.
Co-Authors A.A. Ketut Agung Cahyawan W Ade Agung Harnawan, Ade Agung Ahmad Ahmad Ananda, Tarisa Anggryani, Anggryani Anny Sulaswatty, Anny Arif Sholahuddin Astuti, Yanti Asyiah, Noor Ayu, Futri Darminto . Egi Agustian Erdiansyah Rezamela, Erdiansyah Fahmi Fahmi Farida, Laila Ginanjar, Awal Hafiizh Prasetia, Hafiizh Hendris Hendarsyah Kurniawan, Hendris Hendarsyah Hery Fajeriadi Husain, Sadang Ida Ayu Putu Sri Widnyani Jamilah, Nor Kurniasih, Tintin Manik, Tetti N. Manik, Tetti Novalina Maya, Safitri Melani, Noor Sri Muhaemina, Maulanie Muhammad Salahuddin Muliawatiq, Muliawati Munir, M. Jiddan Mishbahul Ninis Hadi Haryanti, Ninis Hadi Nova Annisa, Nova Nur Hazizah Nurma Sari, Nurma Permitaria, Antung Putra, Edy Giri Putri, Melda Rizka Rahmat Rahmat Ramadhoni, Benni F Rosadi, Jannesa Tri Rusmansyah Rusmansyah, Rusmansyah Saputra, Yoga Sari, Putri Sembiring, Rinawati Simon Sadok Siregar, Simon Sadok SRI RAHAYU Suarso, Eka Suganda, Rolly Ega Suyidno Suyidno Syahmani Syahmani Taufik Hidayat Tetti Novalina Manik Totok Wianto Yudha Irhasyuarna