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EduChemia: Jurnal Kimia dan Pendidikan
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 25024778     EISSN : 25024787     DOI : http://dx.doi.org/10.30870/educhemia.v6i2.10412
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology
Focus and Scope Educhemia (Jurnal Kimia dan Pendidikan) is Periodicals published the results of research related to the development of science and technology in the field of Chemistry and Chemistry education as a form of intellectual property Chemistry: Organic chemistry, Inorganic chemistry, Biochemistry, Physical chemistry, Analytical Chemistry, Environmental Chemistry, Material chemistry, Ethnochemistry. Chemistry education: chemistry learning design and model, chemical education curricula, Technology innovation and media/multimedia in chemistry learning, development of evaluation tools, lesson study and classroom action research
Arjuna Subject : Kimia(semua kategori) - Kimia Organik
Articles 12 Documents
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Search results for , issue "Vol 10, No 1 (2025)" : 12 Documents clear
Smart-Coating Corrosion Inhibitor for Carbon Steel Using LDH Modified with Laundry Detergent Waste Irmayanti, Dwi; Jamilah, Badrotul; Agustin, Ardianti Dwi; Fitria, Maulida Rizki; Wijayanto, Herry
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/educhemia.v10i1.29560

Abstract

This research was conducted with the aim of reducing environmentally harmful detergent waste while utilizing its anionic surfactant content for the development of Zn-Al LDH composites with benzimidazole as a smart corrosion inhibitor for low-carbon steel, providing dual protection. The samples used in this research included detergent waste collected from commercial laundry services in the Ketintang area of Surabaya, commercial detergent, dodecylbenzenesulfonate, and pure Zn-Al LDH. The methodology involves the synthesis of Zn-Al LDH followed by characterization using FTIR, XRD, and TGA. The results indicate that the thermal decomposition profiles of Zn-Al LDH intercalated with commercial detergent, detergent waste, and dodecylbenzenesulfonate confirm that Zn-Al LDH can be modified with laundry waste. Additionally, interactions between Zn-Al LDH and benzimidazole enhance the crystalline structure of Zn-Al LDH, improving its quality as an anticorrosion material. Quantitative corrosion rate analysis using the weight loss method revealed that the Zn-Al LDH–dodecylbenzenesulfonate–benzimidazole sample exhibited the highest corrosion resistance, followed by the Zn-Al LDH–commercial detergent–benzimidazole, Zn-Al LDH–pure–benzimidazole, and Zn-Al LDH–detergent waste–benzimidazole samples. Overall, these findings support the feasibility of repurposing detergent waste as a functional additive for Zn-Al LDH-based corrosion inhibitors. Although not as effective as pure commercial surfactants, detergent waste provides environmental and functional benefits, reducing environmentally harmful and sustainable smart coatings for corrosion protection.
Identifying Students’ Understanding Levels and Sources of Misconceptions in Acid–Base Concepts Through a Five-Tier Diagnostic Test Sari, Sandi Danar Cynthia; Ardi, Triyanto; Parameswary, Clara Shabrina; Widiastuti, Nabila Lailil
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/educhemia.v10i1.35563

Abstract

Identifying misconceptions experienced by students is an important step in understanding learning difficulties and designing more effective learning strategies. This study aims to analyze the level of understanding, misconceptions, and learning sources that cause students' misconceptions on acid-base material through the use of the Five-Tier Diagnostic Test. The results of the study show that 32.06% of students are in the sound understanding category, 25.44% in the partial understanding category, 7.21% have misconceptions, and 4.41% are in the not understanding category. The majority of students have understood the basic concepts of acids and bases, but many have only achieved partial understanding, which indicates partial comprehension without proper reasoning. Additionally, the analysis of the fifth tier, which identified the sources of misconceptions, revealed that 75.98% of misconceptions originated from personal thoughts, 14.95% from the internet, 9.06% from books, while teachers and other sources did not contribute (0.00%). The highest misconceptions were found in the subconcepts of pH and pOH, influenced by personal thoughts and daily experiences that do not align with scientific concepts. These findings confirm the effectiveness of the Five-Tier Diagnostic Test in revealing the details of students' understanding as well as the sources of misconceptions. Therefore, teachers need to utilize this instrument to design more targeted conceptual change-based learning strategies to reduce misconceptions in acid-base material.

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