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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Ilmu Dasar Jurnal Tadris Kimiya SPIN: Jurnal Kimia & Pendidikan Kimia IJPD (International Journal Of Public Devotion) Hydrogen: Jurnal Kependidikan Kimia J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) Jurnal Pengabdian Pada Masyarakat Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Journal of The Indonesian Society of Integrated Chemistry
Sasri, Risya
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Assistance in Improving the Skills of Science Teachers in the Preparation of Technological Pedagogical Content Knowledge (TPACK)-Based Learning Tools Hairida, Hairida; Masriani, Masriani; Rasmawan, Rahmat; Enawaty, Eny; Lestari, Ira; Ifriani, Andi; Muharini, Rini; Erlina, Erlina; Sartika, Rody Putra; Junanto, Tulus; Ulfah, Maria; Sasri, Risya; Monica, Icha; Monica, Qois; Warohmah, Mawaddatul; Cahyani, Melur Regista
International Journal of Public Devotion Vol 6, No 1 (2023): January - July 2023
Publisher : STKIP Singkawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26737/ijpd.v6i1.3759

Abstract

The competence of educators in the use of technology in learning today is still not enough to answer the challenges of 21st-century learning. For this reason, it is necessary to assist increased science educators with TPACK-based learning tools. The results of a survey of educators found that educators still hadn't applied technology in their learning so in preparing learning tools they were still not skilled.  This activity aims to provide knowledge and skills to educators regarding the preparation of TPACK-based learning tools, describe the understanding of science educators on the role and use of technology, describe the ability of educators to design TPACK-based learning tools, and determine the response of educators to the activities carried out. The socialization and mentoring were using discussion and group work methods. The Activity was attended by 18 science teachers in Sintang Regency. The results of the mentoring show that this assistance is very helpful for educators in understanding TPACK and the knowledge of teachers about TPACK and the preparation of TPACK-based learning tools is increasing.
GREEN SYNTHESIS OF TITANIUM DIOXIDE USING BIANCAEA SAPPAN EXTRACT AS REDUCTORS: SINTESIS HIJAU NANOKOMPOSIT TITANIUM DIOKSIDA MENGGUNAKAN EKSTRAK KAYU SECANG (BIANCAEA SAPPAN L.) SEBAGAI REDUKTOR Sasri, Risya; Harun, Ifriany
SPIN JURNAL KIMIA & PENDIDIKAN KIMIA Vol. 6 No. 1 (2024): Januari - Juni 2024
Publisher : UIN Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/spin.v6i1.8903

Abstract

Telah dilakukan sintesis TiO2 berbasis green chemistry melalui reduksi prekursor titanium isopropoksida oleh ekstrak kayu secang sebagai bioreduktor. Tujuan penelitian ini adalah untuk mengkaji karakteristik material nanokomposit TiO2 berdasarkan hasil analisis dengan difraksi sinar- X (XRD) dan diffuse reflectance UV-Vis. TiO2 disintesis melalui metode sol gel menggunakan larutan ekstrak kayu secang dalam pelarut etanol. Proses kristalisasi dilakukan dengan kalsinasi pada suhu 40oC selama 2 jam. Karakteristik TiO2 hasil sintesis hijau memperlihatkan sudut difraksi, jarak antar bidang dan bidang kristal yang bersesuaian dengan TiO2 standar dengan indikasi terbentuknya nanopartikel TiO2 berdasarkan analisis XRD. Nilai Egap TiO2 sintesis sebesar 2,46 eV yang diperoleh dari analisis DR UV-Vis dengan persamaan Kubelka Munk. Berdasarkan data yang diperoleh, maka TiO2 nanopartikel dapat disintesis melalui sintesis hijau (green chemistry) menggunakan titanium tetraisopropoksida sebagai prekursor Ti yang direduksi dengan ekstrak kayu secang dalam pelarut etanol.
Synthesis TiO2 -SiO2 Composites Using The Method Sol-Gel-Hydrothermal Milawati, Sri; Syahbanu, Intan; Sasri, Risya
Jurnal ILMU DASAR Vol 22 No 1 (2021)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v22i1.14492

Abstract

Titanium dioxide (TiO2) is a transition metal oxide material which has been researched extensively and can be used for various applications. In this research, synthesis of TiO2 -SiO2 using TTIP and TEOS precursor. Research aims to determine the characteristics of composite materials generated based on the influence of hydrothermal time and precursor composition. Synthesis is done by variation of hydrothermal time (4 hours, 8 hours, 18 hours, 24 hours and without hydrothermal) and TEOS precursor composition variation (1:1, 1:2 and 2:1). Synthesis is made by dissolving the two precursors through the sol-gel-hydrothermal method and continued with the calcination process. Characterization using FT-IR showed a bonding Ti-O-Si at a wavelength of 950 cm-1 . This bond is formed from the interaction between TiO2 and SiO2 which indicates the success of the synthesis. The XRD characterization results show formed of a peak at 2θ° the range 25° for all composites. The results of the dr-uv characterization on the TiO2 -SiO2 composite comparison of 2:1 showed absorption at 387 nm and obtained band gap energy of 3,20 eV. Based on the data obtained it can be concluded that synthesis of TiO2-SiO2 hydrothermally obtained the optimum time 24 hours and the best comparison is contained in the composition 2:1, which produces an anatase structure with a crystal size of 15,899 nm, so that the resulting composite can be used as a photocatalyst. Keywords: Hydrothermal, Sol-gel, TiO2 -SiO2.
Creative Thinking Skills in Colloidal Material of 11th grade Science Students at SMAN 1 Mempawah Hilir Fitri, Sari Nur; Junanto, Tulus; Sasri, Risya; Hairida, Hairida; Rasmawan, Rahmat
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 1 (2024): February 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i1.10367

Abstract

The industrial revolution 4.0 makes us develop into adaptive humans. 21st century skills, that involves thinking critically and inventiveness, abilities to communicate and teamworks, are needed to adapt to all technological changes. Among the four 21st century skills, creative thinking skills are needed to develop innovative ideas in answering problems in the learning process. The variable of this research is students’ creative thinking skills. The aspects studied consist of originality, fluency, flexibility, and elaboration. The research process was conducted with descriptive quantitative using a sample of 35 students of class XI IPA at SMA Negeri 1 Mempawah Hilir. The research instruments used were creative thinking test questions in the form of descriptions and interview guidelines. The results of data analysis stated that students’ creative thinking skills were included in the insufficient category with a percentage of 74,29% of the sample. The average value in originality is 42,68%, while the aspects of fluency, flexibility, and elaboration have the same average of 36,78%. Several factors cause the low level of students’ creative thinking skills; namely students still memorize the material in the book, lack of learning experience, students tend to give answers as they are because they think they will get a score even though they only write a few answers, and another factor is that students lack focus when working on test questions.
Determination of Tannin Content in Matoa Plants (Pometia pinnata) Based on Variations in Leaf Age Ulandari, Uci; Masriani, Masriani; Sasri, Risya; Ersando, Ersando
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 4 (2024): August 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i4.12583

Abstract

The growth of the textile industry contributes significantly to environmental pollution from dye waste. The use of natural dyes from plants could be a solution to this problem, although they have weaknesses such as easy fading and less stable colors. Therefore, to improve color stability, a mordant is needed as a color fixative. Biomordants are mordants derived from plants that can be used as substitutes for metal mordants to bind dye to fabric fibers. Matoa leaves are one of the plants with the potential to be used as a biomordant because they contain tannin compounds. This study aims to determine the tannin content of methanol extracts of matoa leaf with various leaf age variations that can be used as a biomordant. The old and young matoa leaves were macerated with methanol for 3 days. The tannin content was determined using the Folin Ciocalteu method using a spectrophotometer Ultra Violet (UV) dual beam with positive control of tannic acid at a wavelength of 755.8 nm. The yield of methanol extract from old matoa leaves was 5.42% and from young matoa leaves was 8.58%. Phytochemical screening of methanol extract of old and young matoa leaves revealed the presence of secondary metabolite content of tannins, phenolics, flavonoids, saponins, triterpenoids, and alkaloids. The total tannin content of methanol extract from old matoa leaves was 0.37% ± 0.03, lower than that of young matoa leaves, which was 0.44% ± 0.06. Based on this research, it can be concluded that matoa leaves contain tannins and have the potential to be used as a biomordant.
Analysis of Teaching Module in Merdeka Curriculum Used by Teacher in Chemistry Learning at SMAN 10 Pontianak Wilda, Wilda; Hairida, Hairida; Sasri, Risya; Masriani, Masriani; Ulfah, Maria
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 2 (2024): April-May 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i2.11112

Abstract

Teaching modules are learning tools in the merdeka curriculum. The aim of this research is to analyze the merdeka curriculum teaching modules used by educators in teaching chemistry. Quantitative descriptive methods were used in this research, and data collection techniques used measurement and documentation. The data collection tool is a learning tool review sheet that has been validated by two experts using the Gregory test. The object studied was the merdeka curriculum teaching module used by class X chemistry educators at SMAN 10 Pontianak in a total of six meetings. Data analysis was carried out based on scores on each component of the teaching module. Based on the data obtained from the analyzed teaching module components, it obtained a score of 88.3 and was included in the good category. Thus, it can be concluded that the components contained in the teaching module are in accordance with the merdeka curriculum learning and assessment guidelines, and the module is good for use in learning activities.
Development of E-Supplement Biomordant from Several Species of Ferns (Pteridophyta) as A Teaching Material for Green Chemistry Course Hariyanti, Weni; Masriani, Masriani; Sasri, Risya; Sapar, Ajuk; Erlina, Erlina
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 2 (2024): April-May 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i2.11016

Abstract

The purpose of this study was to determine the feasibility of Green Chemistry E-Supplement with material Biomordant from Several Species of Ferns (Pteridophyta). The method used in this research is Research and Development (R&D). The e-supplement teaching material development model used is ADDIE. The subject of this research is Green Chemistry E-Supplement with material Biomordant from Several Species of Ferns (Pteridophyta). The data collection techniques used were direct communication and measurement techniques. The research instrument used was a feasibility assessment sheet and data analysis using a Likert scale. The feasibility of  e-supplement was assessed by two validators. The final results of the feasibility assessment in the aspects of material, media, and language obtained a percentage of 98%. So, it can be concluded that the Green Chemistry E-Supplement with material Biomordant from Several Species of Ferns (Pteridophyta) is very feasible.
Determination of Total Tannin Content from Methanol Extracts of Various Species of Ferns (Pteridophyta) Hariyanti, Weni; Masriani, Masriani; Sasri, Risya; Sapar, Ajuk; Erlina, Erlina; Ersando, Ersando
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 2 (2024): April-May 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i2.11597

Abstract

AbstractThe use of heavy-metal mordants in fabric dyeing is prohibited due to the resulting impacts such as environmental damage and public health, therefore environmentally friendly and non-toxic mordants such as tannin mordants (biomordants) are needed. Based on phytochemical screening on fern species (Pteridophyta), it is known that they contain tannins. However, scientific evidence of determining the total tannin content of various species of ferns has so far not been found. This study aims to determine the yield and total tannin content of methanol extracts of five fern species, namely paku kawat (Lycopodium cernuum), paku resam (Gleichenia linearis), paku dayak (Blechnum orientale), paku uban (Nephrolepis biserrata), paku miding (Stenochlaena palustris). Sample extraction was carried out by maceration method using methanol solvent. Extract yield was determined by weighing method. Analysis of total tannin content was carried out by UV-Vis spectrophotometric method at a wavelength of 755.8 nm using Folin-Ciocalteu reagent and sodium carbonate. The results of the research obtained the yield of methanol extracts on paku kawat, paku resam, paku dayak, paku uban, and paku miding are 11.271%; 8.389%; 4.810%; 3.615%; and 0.854%, respectively. Total tannin levels in methanol extracts of paku kawat, paku resam, paku dayak, paku uban, and paku miding were 0.024% ± 0.002; 0.256% ± 0.029; 0.272% ± 0.037; 0.143% ± 0.019; and 0.022% ± 0.012, respectively. Based on these data, it can be concluded that the methanol extract of paku kawat produces the highest yield while paku dayak produce the highest total tannin content. The results indicate that differences in fern species cause differences in tannin levels.  
An Analysis of Essential Amino Acid Contents of Canistel Fruit (Pouteria campechiana) as A Source of Vegetable Protein in An Effort of Food Diversification Harun, Andi Ifriany; Sasri, Risya; Diannisa, Nyemas Firda; Puspasari, Yunita
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 1 (2024): February 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i1.10491

Abstract

Canistel fruit is a fruit that is not cultivated and is not known to many people because of limited information about this fruit. In the field of biochemistry, analysis of the essential amino acids contained in canistel fruit has never been carried out. The aim of this research is to determine the type and levels of essential amino acids in Canistel fruit as a source of vegetable protein in an effort to diversify food. The sample used was Canistel fruit. The method used was chromatography using UPLC with a C18 column, PDA detector, gradient pump system, and column temperature of 49⁰C. 15 types of amino acids were obtained, consisting of 7 essential amino acids and 8 non-essential amino acids. Essential amino acids are L-Fenilalanin (994,64 mg/kg), L- Isoleusin (704,58 mg/kg), L-Valin (876,69 mg/kg), L-Lisin 1.068,36 mg/kg), L- Leusin (1.199,45 mg/kg), L-Treonin (857,16 mg/kg), and LHistidin (421,03 mg/kg)and 8 non-essential amino acid are L-Serin (957,38 mg/kg), L-Asam glutamat (2.137,7 mg/kg), L-Alanin (1.070,01 mg/kg), LArginin (838,15 mg/kg), L-Glisin (1.101,56), L-asam aspartate (1.900,63 mg/kg), L-Tirosin (141,90 mg/kg), and L-Prolin (1.146,84 mg/kg).
Development of Multirepresentation-Based Learning Videos on the Material of Physical Properties of Alcohols and Ethers Maulidiyah, Hanna Rohmatul; Muharini, Rini; Ulfah, Maria; Enawaty, Eny; Sasri, Risya
Journal of The Indonesian Society of Integrated Chemistry Vol. 16 No. 2 (2024): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v16i2.36321

Abstract

The topic of the physical properties of alcohol and ether compounds is often perceived as challenging by students due to its abstract nature. Consequently, the development of effective learning media is essential to address these difficulties. This study aims to develop a multirepresentation-based instructional video that illustrates the impact of intermolecular forces on the boiling points of alcohols and ethers. The research utilized the 4D model by Thiagarajan, comprising four stages: Define, Design, Develop, and Disseminate. However, this study was limited to the Develop stage. The research instruments included validation sheets and response questionnaires, employing indirect communication measurement techniques. The validity assessment involved three experts evaluating various aspects of the product, while the response test was conducted with 29 students. Data from the validation results were analyzed using the Content Validity Index (CVI), where the instructional video achieved a CVI score of 1.00, indicating very high validity. Student responses demonstrated a satisfaction rate of 85.98% (very good) in the limited trial and 83.57% (very good) in the main trial. In conclusion, the multirepresentation-based instructional video is a highly valid and effective tool that can be utilized in teaching the physical properties of alcohols and ethers.
Co-Authors Agusta, Muhammad Farras Leonasa Ajuk Sapar Berlian Sitorus Cahyani, Melur Regista Diannisa, Nyemas Firda Dzikrika*, Nuuridzdzati Eni Mayasari Eny Enawaty Erlina Erlina Ersando, Ersando Fitri, Sari Nur Hariyanti, Weni Harun, Andi Ifriany Harun, Ifriany Hidayat, Niko Ifriani, Andi Ifriany, Andi Ira Lestari Juwita, Syita Auliah Manulang, Yunior Arta Arga Maria Ulfah Masriani . Maulidiyah, Hanna Rohmatul Milawati, Sri Monica, Icha Monica, Qois Nizam, Dinna Nina Mohd Parawansa, Khofifah Aditha Rachmat Sahputra Rahmat Rasmawan Rini Muharini Rody Putra Sartika Sembiring, Rinawati Seno Darmawan Panjaitan Sri Wahyuni Sumila, Sumila Syahbanu, Intan Tulus Junanto Ulandari, Uci Warohmah, Mawaddatul WILDA, WILDA Yunita Puspasari, Yunita