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KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia
Published by Universitas Samudra
ISSN : 2721902X     EISSN : 27219038     DOI : https://doi.org/10.33059/katalis.v4i1.3106
Core Subject : Science, Education,
Chemistry Education
Jurnal Katalis, merupakan jurnal ilmiah yang dalam bidang penelitian kimia dan pendidikan kimia yang dikelola oleh Program Studi Pendidikan Kimia, Fakultas Keguruan dan Ilmu Pendidikan Universitas Samudra. Jurnal Katalis terbit secara berkala dua kali setiap tahunnya yaitu edisi Januari-Juni dan Juli-Desember dengan isi sebanyak 6 artikel/volume atau 12 artikel/nomor terbit. Jurnal Katalis dirancang sebagai bentuk komitmen Program Studi Pendidikan Kimia dalam upaya memfasilitasi para peneliti, dosen, mahasiswa dan guru agar dapat mempublikasikan hasil penelitiannya secara daring dan cetak. Fokus kajian: 1. Pendidikan Kimia 2. Penelitian Kimia (kimia organik, biokimia, kimia anorganik, kimia fisik, kimia analitik, kimia lingkungan, dan kimia bahan alam) 3. Komputasi kimia
Arjuna Subject : Umum - Umum
Articles 98 Documents
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Pengaruh Penambahan KOH Terhadap Kulit Kerang (Anadara granosa) Sebagai Katalis Dalam Pembuatan Biodiesel Afandi, Trisno; Nurhayati; Awaluddin, Amir; Nainggolan, Fernando; Rahmat, Nahzim
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 8 No 2 (2025): Jurnal Katalis Vo.8 No.2 Tahun 2025
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v8i2.13377

Abstract

The utilization of waste as a source of catalytic material in biodiesel production continues to be developed, including waste from cockle shells. In this study, the addition of KOH to the suspension of calcined cockle shells was carried out to increase the catalyst activity in biodiesel production through the transesterification reaction. The catalyst was prepared through the following stages: 1) calcination of cockle shells at 900°C for 10 hours, 2) addition of KOH to the suspension of calcined cockle shells with varying K percentages of 1%; 3%; and 5%, then the mixture was calcined at 600°C. The formed catalyst contains the minerals portlandite (Ca(OH)2) and calcite (CaCO3) based on the X-Ray Diffraction test. The addition of KOH to the suspension of calcined cockle shells was successfully carried out through the K content test using Atomic Absorption Spectroscopy. The K concentration measurement data increased along with the increase in the amount of K added, respectively at 0% K of 2381 ppm, 1% K of 2425 ppm, 3% K of 3183 ppm, and 5% K of 3800 ppm. The basicity of the catalyst was measured by titration using benzoic acid with the result of increasing basicity after the addition of KOH, each basicity of the catalyst 0% K was 1.700 mmol benzoic acid/g, 1% K was 1.700 mmol benzoic acid/g, 3% K was 1.865 mmol benzoic acid/g, and 5% K was 1.965 mmol benzoic acid/g. The catalyst activity test data in biodiesel production showed an increase in the percentage of biodiesel yield, respectively at 0% K of 56.17%, 1% K of 57.72%, 3% K of 76.33%, and 5% K of 76.85%. The catalyst activity also increased based on the measurement data of methyl ester content in biodiesel using Gas Chromatography, respectively at 0% K of 96.42%, 1% K of 97.5%, 3% K of 98.36%, and 5% K of 97.79%. The results show that the catalyst has the potential to be developed and applied in the biodiesel industry as an environmentally friendly catalytic material.
KAJIAN LITERATUR INTEGRASI KONSEP GREEN CHEMISTRY DALAM PEMBELAJARAN KIMIA Gultom, Erdiana
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 9 No 1 (2026): Jurnal Katalis Volume 9 Nomor 1 Tahun 2026
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v9i1.13560

Abstract

The industrial revolution and technological advances have had a significant impact on human life, but they have also created serious environmental problems due to the use of hazardous chemicals. The purpose of this study is to examine the role of education, particularly chemistry education, in creating more environmentally friendly chemical processes. The application of green chemistry principles depends not only on industry but also on the world of education, particularly science and chemistry learning. Therefore, it is important to revitalize science/chemistry learning to orient it towards the principles of green chemistry. Thus, chemistry education can contribute significantly to shaping a generation that thinks critically, innovatively, and has an environmental perspective. This research method uses a narrative literature review. The results of the literature review indicate that the topic of sustainability and education has experienced rapid development to date. The results of the analysis reflect the increasing global attention to sustainable education. Through a project-based learning approach and the support of educational policies that support sustainability, education can become a strategic instrument to build a generation that cares about the environment and is able to face global sustainability challenges scientifically and ethically. Based on the results of the analysis of ten journals, it is seen that the revitalization of chemistry learning can be done through various innovative strategies: Active learning approaches (PjBL, PBL, STEAM) that encourage students to solve real problems on environmental issues, Utilization of digital technology and virtual laboratories that support safe, efficient, and waste-free learning, and Reorientation of the curriculum and strengthening of sustainability values ​​so that chemistry education contributes to the Sustainable Development Goals (SDGs). Keywords: chemistry learning, green chemistry, revitalization, science education, Sustainable Development Goals
Sintesis Hidroksiapatit dari Cangkang Kerang Darah dengan Variasi Waktu Sintering Andriani Usman
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 9 No 1 (2026): Jurnal Katalis Volume 9 Nomor 1 Tahun 2026
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v9i1.13629

Abstract

Hydroxyapatite (HAp) is a biomaterial widely used in medicine and tissue engineering due to its high biocompatibility and similarity to human bone minerals. Hydroxyapatite can be obtained from blood clam shells. This study aims to synthesise hydroxyapatite from blood clam shells. Blood clam shell powder was calcined at high temperatures to obtain calcium oxide (CaO), which was then reacted with a phosphate solution through a wet precipitation method to produce hydroxyapatite. The resulting product was characterised by FTIR, and the FTIR results showed the formation of functional groups that characterised the formation of hydroxyapatite namely the presence of OH- and PO43- functional groups.
Pemanfaatan Karbon Aktif dari Cangkang Kelapa Termodifikasi Fe₃O₄ sebagai Adsorben untuk Menurunkan Kadar Logam Seng (Zn2+) Limbah Cair Chandra, Yogi; Rahadianto, Wahyu Triaji; Sugesti, Heni
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 9 No 1 (2026): Jurnal Katalis Volume 9 Nomor 1 Tahun 2026
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v9i1.13631

Abstract

Environmental pollution originating from industrial waste, including waste containing heavy metals such as ions (Zn²⁺), is a serious concern due to its toxic nature, which can endanger human health. Efforts to treat heavy metal waste continue to be developed, one of which is through adsorption, which is considered efficient, inexpensive, and environmentally friendly. The use of composite-based materials, such as Fe3O4 and coconut shell activated carbon, offers great potential because it combines the magnetic properties of Fe3O4 and the surface area of activated carbon, thereby facilitating the separation process and increasing adsorption capacity. This study aims to evaluate the effectiveness of activated carbon derived from coconut shells and modified with Fe₃O₄ as an adsorbent to reduce the zinc ion (Zn²⁺) content in liquid waste. Activated carbon was modified with Fe₃O₄ to increase its adsorption capacity and facilitate the separation of the adsorbent after the process. Fe3O4-modified activated carbon was characterized using Scanning Electron Microscopy (SEM) to observe the surface morphology and texture, as well as to verify the success of the modification. The SEM characterization results showed changes in the surface structure of activated carbon after Fe3O4 modification. Adsorption tests were conducted in batches to determine the optimal contact time parameter. Contact time variations were tested to determine the adsorption kinetics (Zn²⁺). The results showed that Fe3O4-modified activated carbon had good adsorption performance for (Zn²⁺) ions, achieving a significant reduction in concentration. The optimal contact time for adsorption (Zn²⁺) was found to be 75 minutes, at which the adsorption efficiency (%) reached 90.1%. The conclusion of this study is that Fe3O4-modified coconut shell activated carbon is a potential, efficient, and environmentally friendly adsorbent for treating liquid waste contaminated with heavy metals (Zn²⁺).
KAJIAN LITERATUR TRANSFORMASI PEMBELAJARAN KIMIA MELALUI PENDEKATAN GREEN CHEMISTRY UNTUK PEMBANGUNAN BERKELANJUTAN Febri
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 9 No 1 (2026): Jurnal Katalis Volume 9 Nomor 1 Tahun 2026
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v9i1.13645

Abstract

Green Chemistry is a strategic approach to revitalizing chemistry learning to make it more relevant to sustainability issues. This literature review aims to analyze the concept, implementation, and impact of Green Chemistry's application in chemistry education over the past five years. The study method was conducted by reviewing various national and international scientific publications. The results of the study indicate that the integration of Green Chemistry can improve students' scientific literacy, environmental awareness, critical thinking skills, and 21st-century competencies. Furthermore, this approach strengthens the relationship between chemical theory, environmentally friendly laboratory practices, and the objectives of the Sustainable Development Goals (SDGs). This study emphasizes the importance of transforming chemistry curriculum and pedagogy through Green Chemistry to create human resources with a global perspective and sustainability.
ANALISIS PROFIL PEMAHAMAN KONSEP PESERTA DIDIK BERDASARKAN REPRESENTASI KIMIA PADA MATERI FAKTOR-FAKTOR YANG MEMPENGARUHI LAJU REAKSI Lase, Alvince Stevani; Zalukhu, Try Sepakat
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 9 No 1 (2026): Jurnal Katalis Volume 9 Nomor 1 Tahun 2026
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v9i1.13466

Abstract

Students’ understanding of the factors that influence reaction rates remains challenging due to the abstract nature of the concepts and the cognitive demand of integrating multiple levels of chemical representation. This study aims to map students’ conceptual understanding profiles based on chemical representations in the reaction rate material. The research employed a descriptive method with a quantitative approach involving 64, class XI-1 and XI-2. Data were collected using a four-tier diagnostic test and analyzed based on understanding categories, representational abilities, and subtopics. The results show that only 44.66% of students were in the concept-understanding category, while 20.70% partially understood the concepts, 35.16% did not understand the concepts, and 27.34% exhibited misconceptions. Further analysis revealed that the microscopic representation was the largest source of errors, with 22.40% falling into the non-understanding category and 21.61% into the misconception category. Understanding based on subtopics also varied, with misconceptions reaching 31.25% in the temperature subtopic and 26.56% in the surface-area subtopic. These findings highlight that low representational ability is directly associated with high levels of misconceptions. The study recommends strengthening representation-based learning and employing continuous diagnostic assessment to improve students’ conceptual structures.
Makna dan Pemanfaatan Minyak Atsiri Daun Kayu Putih dalam Kehidupan Masyarakat Lokal Arif Kuntari
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 9 No 1 (2026): Jurnal Katalis Volume 9 Nomor 1 Tahun 2026
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v9i1.13642

Abstract

Cajuput essential oil is a natural resource that plays an important role in the lives of local communities, not only as an economic commodity but also as part of social and cultural constructions. This study aims to critically examine the meanings and utilization of cajuput essential oil in local community life, as well as the dynamics of meaning transformation in the context of modernization and commercialization. This research employs a qualitative approach with a conceptual case study design based on a literature review of relevant academic journals and scholarly sources. The findings indicate that cajuput essential oil is understood as a form of local knowledge transmitted across generations and embedded in traditional health practices, social relations, and environmental management. Its utilization ranges from domestic use to community-based economic activities. However, the increasing dominance of market-oriented logics tends to shift socio-cultural meanings and may generate unequal access and distribution of economic benefits. This study highlights the importance of participatory and community-based approaches to ensure social, cultural, and ecological sustainability.
Pengaruh Model Pembelajaran dan Self-Efficacy terhadap Hasil Belajar Siswa pada Materi Laju Reaksi di SMA Negeri 1 Siantar Nainggolan, Grace Caroline Oktavia
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 8 No 2 (2025): Jurnal Katalis Vo.8 No.2 Tahun 2025
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v8i2.12601

Abstract

Intensi dari studi ini ialah guna mengkaji perbedaan rerata nilai hasil belajar siswa berdasarkan variasi model pembelajaran dan self-efficacy pada topik laju reaksi serta menelaah interaksi antara model pembelajaran dan self-efficacy terhadap nilai hasil belajar siswa. Populasi riset mencakup keseluruhan siswa XI MIA di SMA Negeri 1 Siantar dengan total enam kelas. Kelas sampel diperoleh dengan teknik Purposive Sampling. Kelas eksperimen 1 yakni kelas XI MIA 2 diajarkan dengan model pembelajaran Learning Cycle 7E dan kelas eksperimen 2 yakni kelas XI MIA 6 diajarkan dengan model pembelajaran Problem Based Learning. Rancangan 2 × 3 dipakai sebagai desain riset. Hipotesis diuji dengan ANOVA Dua Jalur dengan Univariat. Hasil pengujian menunjukkan adanya perbedaan rerata nilai hasil belajar siswa yang diajarkan dengan model pembelajaran yang bervariasi, yang mana harga sig. 0,018 < α (0,05), Ha diterima serta adanya perbedaan rerata nilai hasil belajar siswa didasarkan pada variasi self-efficacy, yang mana harga sig. 0,000 < α (0,05), Ha diterima. Tetapi, tidak ditemukan adanya interaksi antara model pembelajaran dan self-efficacy terhadap hasil belajar pada topik laju reaksi, dimana harga sig. 0,865 > α (0,05), H0 diterima.

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