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All Journal International Journal of Evaluation and Research in Education (IJERE) Jurnal Kependidikan: Penelitian Inovasi Pembelajaran JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Penelitian Saintek Jurnal Pendidikan Kimia Indonesia Jurnal Sains Dasar Journal of Education and Learning (EduLearn) Jurnal Inovasi Pendidikan Kimia JPS Unimus Jurnal Inovasi Pendidikan IPA Scientiae Educatia: Jurnal Pendidikan Sains Jurnal Zarah Indonesian Journal of Chemical Science Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA TANJAK: Journal of Education and Teaching Indonesian Journal of Chemistry and Environment Jurnal Elemen Kimia TPACK-IPA (Technological Pedagogical Content Knowledge) Jurnal Riset Pembelajaran Kimia Jurnal Kemitraan, Kewirausahaan dan Pengabdian Masyarakat

Erfan Priyambodo

Universitas Negeri Yogyakarta

Author-ID : 347745

Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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THE EFFECT OF pH ON THE ADSORPTION OF MICRONUTRIENT CATIONS OF Ca 2+ AND K + BY SILICA FROM LAPINDO MUD Jaslin Ikhsan; Siti Sulastri; Erfan Priyambodo
Jurnal Penelitian Saintek Vol 20, No 1: April 2015
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

The aim of this research was to determine the effect of pH on the adsorption of micronu- trients of Ca 2+ and K . by silica from lapindo mud. Data were collected by the adsorption experiments, on which 3 grams of silica separated from Lapindo mudwere dissolved in 300 mL of 0.0001 or 0.001 M Ca + 2+ or K ., and stirred for 2 hours. The pH of suspension was varied and left for equilibrate for 2 hours, and a sample was taken and measured for free concentration of K + + .cation using Flame Atomic Emission Spectroscopy and of Ca using Atomic Absorption Spectroscopy (AAS). The pH ranges were from 3 to 10. Temperature o 30 C and contact time of 2 hours were maintained. The research showed that both cations were adsorbed in sigmoid curve, increased with increasing pH values. In entire ranges of observed pH, the percentage of cations adsorbed by silica was not different signiﬁ cantly. The adsorbent of silica formed silanol (SiOH) in water. The –OH groups of silica were protonated forming SiOH o at lower pH and deprotonated forming SiO¯ at higher pH. Wether Ca 2+ or K + 2 + . cations were bound to silica surfacesvia cation exchange reactions, on which Ca2+ or K + . exchanged H of SiOH using one charge of the cations, forming [SiO(CaO)] for Ca 2+ , and [SiO-K] for K

The Profile of Students’ Analytical Thinking Skills on Chemistry Systemic Learning Approach Nur Fitriyana; Marfuatun Marfuatun; Erfan Priyambodo
Scientiae Educatia: Jurnal Pendidikan Sains Vol 8, No 2 (2019): December 2019
Publisher : Tadris Biologi Fakultas Ilmu Tarbiyah dan Keguruan IAIN SYEKH NURJATI CIREBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24235/sc.educatia.v8i2.5272

The movement of educational systems on the 21st century need to be change from linearity to systemic form. The aims of this research is to determine the effect of Chemistry Systemic Learning Approach (CSLA) toward Students’ Analytical Thinking Skills (SATS). A pre-experimental with pre-test and post-test design was adopted in this research. The population of this study were all of the students of public senior high school in Kulon Progo regency, Yogyakarta, Indonesia. Two classes from a public senior high school in those regency were cluster randomly selected as the research samples. A Systemic Test on Analytical Thinking (STAT) was used to collect the data of SATS, before and after the implementation of CSLA. The STAT covering four indicators of analytical thinking, they are differentiating, organizing, and attributing indicators. Meanwhile, the CSLA was integrated in the teaching-learning process and in the STAT, the CSLA was presented in the form of cyclic diagrams. The data of SATS on CSLA were analyse according to paired samples t-test and n-gain category analysis. The results of these analysis indicates that there was significant effect of CSLA on SATS. Moreover, the profile of SATS shows a satisfied improvement after the implementation of CSLA. Overall, a high n-gain category was reached that indicates the enhancement of students’ understanding of the inter-related concept in chemistry. This study gives a significant contribution on the use of CSLA to improve SATS. Hence, the used of CSLA should be emphasized on chemistry learning to promote students’ higher order thinking skills.

PENERAPAN MODEL PEMBELAJARAN THINK PAIR SHARE (TPS) PADA PEMBELAJARAN KIMIA UNTUK MENINGKATKAN KETERAMPILAN BERARGUMENTASI DAN MOTIVASI BELAJAR SISWA Fitri Wahyuning; Erfan Priyambodo; S. Sugeng
Jurnal Pendidikan Kimia Indonesia Vol. 3 No. 1 (2019)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jpk.v3i1.12973

AbstrakTujuan penelitian tindakan kelas ini adalah untuk mengetahui apakah penerapan model pembelajaran Think Pair Share pada pembelajaran kimia dapat meningkatkan keterampilan berargumentasi dan motivasi belajar siswa di SMA N 1 Wates. Penelitian ini merupakan penelitian tindakan kelas yang dilaksanakan dalam tiga siklus, dimana setiap siklus terdiri atas perencanaan, tindakan, pengamatan, dan refleksi. Hasil penelitian menunjukkan bahwa, penerapan model pembelajaran Think Pair Share dapat meningkatkan keterampilan berargumentasi siswa dan motivasi belajar siswa. Persentase peningkatan observasi keterampilan berargumentasi pada siklus II aspek claim terjadi peningkatan sebesar 12,02 % dari siklus I dan evidence terjadi peningkatan sebesar 12,74 %, sedangkan untuk aspek reason dikategorikan sedang meskipun sudah terjadi peningkatan 29,57%. Persentase peningkatan pada siklus III terjadi sebesar 15,63% pada aspek claim, sebesar 12,74% aspek evidence dan reason terjadi peningkatan sebesar 18,7%. Persentase minat siswa, semangat siswa, tanggung jawab siswa, respon terhadap stimulus, serta rasa senang dan puas secara berturut-turut mengalami persentase peningkatan sebesar 9,81%, 6,34%, 6,73%, 6,73%, dan 5,71%.AbstractThe purpose of this class action research is to find out whether the application of Think Pair Share learning models in chemistry learning can improve the argumentation skills and students' learning motivation in Wates N 1 High School. This research is a classroom action research conducted in three cycles, wherein each cycle consists of planning, action , observations, and reflections. The results of the study show that the application of Think Pair Shared learning models can improve students' argumentation skills and student motivation. The percentage increase in observation of argumentation skills in the second cycle of the claim aspect increased by 12.02% from the first cycle and the evidence increased by 12.74%, while for the reason aspect was categorized as moderate even though there had been an increase of 29.57%. The percentage increase in cycle III occurred by 15.63% in the claim aspect, by 12.74% in the evidence and reason aspect an increase of 18.7%. The percentage of student interest, student enthusiasm, student responsibility, response to stimulus, and feeling of pleasure and satisfaction respectively experienced a percentage increase of 9.81%, 6.34%, 6.73%, 6.73%, and 5.71%.

Critical Thinking Ability of High School Students in Daily Life Acid-base Concept Das Salirawati; Erfan Priyambodo; Anggiyani R.E. Nugraheni; Rahmat Basuki
JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG Vol 9, No 1 (2021): JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG
Publisher : Pendidikan Kimia Unimus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jps.9.1.2021.1-13

This study aimed to comprehend the quality of critical thinking questions and measure the critical thinking ability in the daily life acid-base topic of 2nd -students from six public high schools, six private high schools, and combination of them in Yogyakarta at the 2018/2019 academic year based on the answer patterns of students to the developed critical thinking questions. The method was an ex-post facto research designed with a one-sample design. The level of critical thinking ability was measured by 15 critical thinking question outlined from the seven critical thinking criteria referred to established commercial critical thinking test. The questions were theoretically validated by three reviewers (content, evaluation, and chemistry education experts). The results showed that the quality of critical thinking questions were excellent. The level of critical thinking skills in daily life acid-base topic of 2nd-grade Yogyakarta’s senior high schools at the academic year 2018/2019 of six public high schools, six private high schools, and combination both of them was 40.2% (moderate), 34.8% (deficient), 37.5% (deficient), respectively.

Methyl Orange Dye Removal through Adsorption using TiO2 modified Montmorillonite Granule Dewi Yuliana; Erfan Priyambodo
Indonesian Journal of Chemistry and Environment Vol 5, No 1 (2022): JUNE 2022
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v5i1.51824

This research was conducted to determine the characteristics of TiO2 modified montmorillonite granule and to determine the effectiveness of its filtration against methyl orange dye. Montmorillonite granule particles were made through a pressing process and continued with sintering at 900oC. The granules obtained were coated with TiO2 photocatalyst by the deep coating method. The montmorillonite granules were characterized using SEM-EDX and the methyl orange dye adsorption process was carried out using the column method. The SEM analysis showed that the granules is porous materials and the EDX confirm the increasing of TiO2 content in montmorillonite before and after being coated with TiO2 from 0.50% to 22.66%. The best adsorption effectiveness of methyl orange was 96.6% at the flow rate of 0.0083 L/hour, which occurred in the use of TiO2 modified montmorillonite granule.

Using Different Size of Montmorillonite Particles for Filtration-Adsorption of Nickel Metal in Electroplating Liquid Waste Dyah Mustika Braniwati; Erfan Priyambodo
Indonesian Journal of Chemistry and Environment Vol 4, No 1 (2021): JUNE 2021
Publisher : Universitas Negeri Yogyakarta

This study aims to know the effect of montmorillonite particle, which were granule and gravel of montmorillonite,prepared from the sintering method and its effectiveness in filtration-adsorption process of the nickel-metal in electroplating liquid waste. The granule and gravel of montmorillonite wereprepared by compaction and sintering processes at a temperature of 900oC. The characterization of granule montmorillonite shows the notoriously random micropore material, which the pore surface area was 8.393 m2/g. While the gravel montmorillonite has a pore surface area of 4,381 m2/g. The test was carried out by flowing electroplating waste with the crossflow filtration method and batch adsorption. The most effective decrease in the concentration of nickel-metal occurred in the granules of montmorillonite with a mass ratio of material through filtration and adsorptionwas 2:3. The effectiveness of filtration-adsorption process for removing nickel metal from liquid waste of electropaling was 83.51%.

Peningkatan Minat Wirausaha Masyarakat melalui Pembuatan Sabun Scrub Alami dari Ampas Kopi Sri Handayani; Antuni Wiyarsi; Nur Fitriyana; Metridewi Primastuti; Erfan Priyambodo
Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Vol 6, No 2 (2022): Vol 6, No 2 (2022)
Publisher : Yogyakarta State University

Kegiatan pengabdian pada masyarakat (PPM) bertujuan untuk: (1) meningkatkan pengetahuan masyarakat Seyegan tentang bahan dan manfaat sabun scrub alami dari ampas kopi, (2) meningkatkan ketrampilan masyarakat dalam pemanfaatan teknologi tepat guna pembuatan sabun scrub alami dari ampas kopi, dan (3) memotivasi minat wirausaha masyarakat Seyegan. Kegiatan PPM ini bersifat pelatihan dan dilaksanakan dengan metode ceramah, diskusi dan praktik. Melalui kegiatan tersebut, peserta telah mendapat materi tentang: (1) pembuatan sabun scrub alami dari ampas kopi, (2) kandungan dan manfaat kopi untuk kesehatan kulit, (3) sabun yang aman untuk kesehatan kulit, (4) peluang wirausaha sabun kopi, dan (5) pewarna dan pewangi yang bersifat skin grade. Peserta yang telah mengikuti pelatihan ini berjumlah 11 orang yang merupakan masyarakat di daerah Padukuhan Kamal Wetan, Mangsel VII, Margomulyo, Seyegan. Evaluasi kegiatan PPM dilakukan dalam 2 tahapan, yaitu evaluasi proses melalui observasi selama kegiatan PPM dan evaluasi hasil melalui produk sabun yang dihasilkan serta isian angket kegiatan PPM. Melalui kegiatan ini, dapat disimpulkan bahwa peserta pelatihan telah memperoleh (1) manfaat tentang bahan dan sabun alami dari ampas kopi, (2) pengetahuan dan keterampilan dalam pemanfaatan teknologi tepat guna pembuatan sabun scrub alami dari ampas kopi, namun motivasi dan minat wirausaha peserta pelatihan untuk membuat sabun scrub ampas kopi masih perlu untuk ditingkatkan.

Assessing Chemistry Teachers’ Knowledge of Atmospheric Chemistry Associated with Environmental Chemical Literacy Erfan Priyambodo
Indonesian Journal of Chemistry and Environment Vol 6, No 1 (2023): JUNE 2023
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v6i1.62815

Environmental chemical literacy (ECL) is part of environmental literacy which is one of the most abilities of a citizen for sustainable development. The data for this study were collected using a cross-sectional survey technique for high school chemistry teachers. The data was obtained through online test in atmospheric chemistry, which is consists of 4 topic, i.e. particulate matter (PM) 2.5, green house gasses correlated to global warming, ozone depletion and acid decomposition. Based on the study, it showed that two thirds of respondents have moderate ability in atmospheric chemistry associated with ECL.

Using Learning Managemant System in Fundamental of Analytical Chemsitry Course: Effect on Studentsâ€™ Critical Thinking through The Authentic Assessment Metridewi Primastuti; Erfan Priyambodo; Das Salirawati
TANJAK Vol 4 No 2 (2023): Agustus
Publisher : Jurusan Tarbiyah dan Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35961/tanjak.v4i2.949

Critical thinking is the main skill for connecting relationships between chemical science concepts in a coherent environment. Therefore, a learning and evaluation method is needed to help students master the meaning of chemistry to environmental phenomena. The Fundamental of Analytical Chemistry course invites students to study the technique of determining the concentration of a compound. This is relevant to improve their critical thinking skills. This study aims to analyze the effect of the implementation of Technology-based Authentic Assessment (TbAA) on students' critical thinking skills in Fundamental of Analytical Chemistry course. Designed as a pre-experimental, one group pretest-posttest study was applied. A total of 26 undergraduate Chemistry students were included as samples through purposive sampling. TbAA was held for 7 meetings, then critical thinking skills were assessed through essay instruments covering aspects of interpretation, analysis, evaluation, inference. The validity test was carried out theoretically by 2 learning chemists on 4 critical thinking questions that had been developed. After the data was obtained, descriptive statistics and the Wilcoxon test were carried out to answer the research objectives. Based on the results of the analysis, there is a significant difference in students' critical thinking skills after the application of TbAA.

STUDI FAKTOR pH PADA ADSORPSI KATION Ca(II) OLEH SILIKA TERMODIFIKASI SULFONAT Adlina Amalia Adlina Amalia; Erfan Priyambodo Erfan Priyambodo
Jurnal Elemen Kimia Vol 5, No 1 (2016): Jurnal Mahasiswa Kimia FMIPA UNY
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Silika memiliki luas permukaan spesifik tinggi dan gugus hidroksil yang reaktif, menjadikan silika berpotensi untuk dimanfaatkan sebagai pengemban kation yang baik. Penelitian ini bertujuan untuk mengetahui pengaruh pH pada sifat adsorpsi kation Ca(II) oleh silika termodifikasi sulfonat dan silika non modifikasi.Subjek dari penelitian ini adalah silika dan silika termodifikasi sulfonat. Objek dari penelitian ini adalah daya adsorpsi logam Ca(II) oleh silika termodifikasi sulfonat maupun silika non modifikasi. Data dikumpulkan melalui eksperimen adsorpsi, di mana 0,2 gram silika hasil sintesis dilarutkan dalam 20 mL larutan yang berisi Ca2+ 0,001 M, dan diaduk selama waktu kesetimbangan, yaitu 1 jam. pH suspensi divariasi dengan variasi pH yaitu 3, 4, 5, 6, 7, 8, 9, dan 10. Sampel yang telah diaduk kemudian di centrifuge, diambil sentrifugatnya dan diukur konsentrasi logam Ca(II) sisa dalam larutan dengan Atomic Absorption Spectrophotometry (AAS).Hasil dari penelitian ini menunjukkan bahwa sintesis silika termodifikasi sulfonat berhasil dilakukan dengan ciri-ciri, hilangnya gugus –SH pada panjang gelombang 2569,18 cm-1 dan naiknya intensitas pada daerah bilangan gelombang 3451,57 cm-1 yang meningkat dari 4,215 menjadi 20,380. Semakin tinggi pH semakin besar daya adsorpsi Ca2+ oleh silika maupun silika termodifiasi sulfonat. pH yang baik untuk adsorpsi Ca2+ oleh silika atau silika termodifikasi sulfonat terdapat pada pH 7. Pada pH 7, silika mampu menjerap Ca2+ sebanyak 71% dan silika termodifikasi sulfonat menjerap Ca2+ 82,6%.

Co-Authors Adlina Amalia Adlina Amalia Anggiyani R.E. Nugraheni Ani Apriani Antuni Wiyarsi Arifiana, Indri Arshiva Tuniza Nur Septiani Asri Widowati Azza Aqila Mumtaz Darojati, Firda Putri Das Salirawati Das Salirawati Dewi Yuliana Dyah Mustika Braniwati Elfina Salsabila Febriyanti, Arni Fitri Wahyuning Hermas Randhanugraha Indah Familiasari Jaslin Ikhsan Khaizuron, Sarah Larasti Yogantari Marfuatun, Marfuatun Metridewi Primastuti Metridewi Primastuti Muldayati, Meitha Nasywa Athaya Khoirunnisa Nur Fitriyana Pramudhana Saputra Primastuti, Metridewi Rahmat Basuki Rr. Lis Permana Sari S. Sugeng Sabar Nurohman Sabar Nurohman Safira Wulaningrum Sela Ivani Hardi Siti Sulastri Sri Handayani Sugeng, S. SULISTIYANI SULISTIYANI Sulistyani Sulistyani Sumarlina, Yenni Sutiman Sutiman Ummi Nur Baiti Wahyuning, Fitri Yanuarista Amelia Yulia Safitri

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