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All Journal VALENSI Lantanida Journal Walisongo Journal of Chemistry Jurnal Kajian Pendidikan IPA al Kimiya : Jurnal Ilmu Kimia dan Terapan
Sundari, Citra Deliana Dewi
Program Studi Pendidikan Kimia, Fakultas Tarbiyah Dan Keguruan, UIN Sunan Gunung Djati Bandung
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Social Sciences

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AG-ZSM-11 ZEOLITE SYNTHESIS USING SILICA FROM ELEPHANT GRASS FOR LED APPLICATION Sundari, Citra D. D.; Setiadji, Soni; Firmansyah, Atthar Luqman; Abdurahman, Dede; Nurbaeti, Denia Febby
Walisongo Journal of Chemistry Vol 1, No 2 (2018): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2396.275 KB) | DOI: 10.21580/wjc.v2i2.3107

Abstract

Silica (SiO2) has been successfully isolated from elephant grass by the sol gel method through pH regulation using NaOH and HCl. The resulting silica has an amorphous character with crystalline phase impurities. The isolated silica was then used as a source of silica for the synthesis of ZSM-11 zeolite using the hydrothermal method with a ratio of SiO2 : TBAOH : H2O = 1 : 0.35 : 25. XRD characterization results confirmed the formation of ZSM-11 zeolite. The SEM results show that the ZSM-11 zeolite crystal morphology is oval with crystal growth in all directions. Immersion of the synthesized ZSM-11 zeolite into AgNO3 solution and followed by calcination resulted in zeolite Ag-ZSM-11 which has different optical properties compared to the initial ZSM-11 zeolite. Zeolite ZSM-11 gives purple luminescence while zeolite Ag-ZSM-11 gives pink luminescence when illuminated under UV lights
Synthesis and Characterization of Calcium Oxide Nanoparticles from Duck Eggshells using Ball Milling Methods Ade Yeti Nuryantini; Citra Deliana Dewi Sundari; Halimahtussa’diah Halimahtussa’diah; Bebeh Wahid Nuryadin
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (955.108 KB) | DOI: 10.15408/jkv.v5i2.8779

Abstract

Calcium oxide (CaO) nanoparticles have been successfully synthesized from duck eggshells using ball milling method followed by simple calcination at 700°C for 7 hours. The observation on the morphology, size and shape of the particles of the eggshells powder was conducted through scanning electron microscope (SEM). The milling time was varied, i.e. 2, 6, 10, and 20 hours to observe the difference on the size of the produced particle. SEM images shows that the smallest average particle diameter was 520 nm, achieved by 20 hours of milling. When the particles were calcined, the average diameter was further reduced to 394 nm. The X-ray diffraction (XRD) analysis shows that the resulting particles contain calcium oxide, calcium hydroxide, and calcium carbonate. 
Sintesis dan Karakterisasi Nanostruktur Tembaga Oksida dengan Metode Hidrotermal Citra Deliana Dewi Sundari; Reni Fitriani Rahayu; Neneng Windayani
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 5, No 1 (2018): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v5i1.3725

Abstract

Karakteristik material tembaga oksida (CuO) bergantung pada struktur dan morfologinya. Prosedur sintesis tembaga oksida memberikan pengaruh yang signifikan terhadap struktur dan morfologi material yang dihasilkan. Pada penelitian ini, nanostruktur tembaga oksida disintesis melalui proses hidrotermal dengan prosedur yang relatif sederhana. Karakterisasi terhadap sampel CuO yang dihasilkan menunjukkan morfologi partikel yang tidak beraturan dan berongga dengan ukuran partikel berkisar antara 300-800 nm dan ukuran rongga berkisar antara 100-300 nm. Struktur CuO dikonfirmasi dengan adanya puncak difraksi karakteristik CuO pada sudut difraksi (2θ) 35,29o dan 38,50o. Nanostruktur CuO yang dihasilkan memperlihatkan serapan maksimum pada panjang gelombang 416-422 nm.
Sintesis Zeolit Silikalit-1 Menggunakan Limbah Tongkol Jagung sebagai Sumber Silika Ginawanti Maulida Gunawan; Dede Suhendar; Citra Deliana Dewi Sundari; Atthar Luqman Ivansyah; Soni Setiadji; Yusuf Rohmatulloh
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 4, No 2 (2017): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v4i2.5089

Abstract

Tongkol jagung merupakan limbah agrikultural yang banyak mengandung silika yang pemanfaatannya belum maksimal. Silika dai tongkol jagung dapat menjadi solusi alternatif untuk menggantikan sumber silika komersial. Penelitian ini bertujuan untuk mengisolasi, mensintesis, dan mengkarakterisasi zeolit silikalit-1 dari limbah tongkol jagung. Metode sol-gel digunakan untuk mengisolasi silika yang selanjutnya digunakan untuk sintesis zeolit silikalit-1 dengan metode hidrotermal. Komposisi silika ditentukan oleh X-Ray Fluorescence (XRF). Silika yang dihasilkan sebesar 34,55%. Pengotor utama silika yang dihasilkan dari hasil ekstraksi adalah Na2O sebesar 7,48%. X-Ray Diffraction (XRD) menunjukkan bahwa silika hasil isolasi adalah amorf. Data Fourier Transform InfraRed (FTIR) menunjukkan adanya siloksan dan kelompok silanol didalam silika. X-Ray Diffraction (XRD) menunjukan bahwa zeolit silikalit-1 telah berhasil disintesis dengan ukuran kristal sebesar 15,28 nm. Data Fourier Transform InfraRed (FTIR) menunjukkan adanya gugus D5R pentasil pada zeolit yang dihasilkan. Scanning Electron Microscope (SEM) menunjukan morfologi dari zeolit silikalit-1 berbentuk bola-bola kecil yang merupakan benih kristal heksagonal yang sepenuhnya belum terbentuk.
Pemanfaatan Rumput Gajah sebagai Sumber Silika untuk Sintesis Zeolit T Soni Setiadji; Ani Sri Wahyuni; Dede Suhendar; Citra Deliana Dewi Sundari; Atthar Luqman Ivansyah
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 4, No 2 (2017): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v4i2.5085

Abstract

Zeolit T merupakan salah satu tipe zeolit yang digunakan sebagai bahan membran untuk pemisahan gas. Penggunaan silika sebagai prekursor untuk mensintesis zeolit perlu dioptimalkan. Dalam studi ini, sumber silika diperoleh dengan memanfaatkan bahan yang alami, yakni dari rumput gajah. Silika diperoleh dengan cara isolasi dari abu rumput gajah menggunakan NaOH. Silika yang diperoleh dari hasil isolasi rumput gajah memiliki persentase sebesar 71,91%. Zeolit T di sintesis dengan komposisi molar 1 SiO2 : 0,025 Al : 0,15 Na2O : 0,15 K2O : 15 H2O : dan 0,06 TMAOH dengan proses hidrotermal selama 4 hari, yaitu 2 hari pertama pada temperatur 60oC, dilanjutkan 2 hari berikutnya pada temperatur 120 oC. Proses inkubasi tersebut mentransformasi silika amorf menjadi kristal zeolit T. Zeolit yang dihasilkan dikarakterisasi dengan difraksi sinar-X (XRD) untuk mengkonfirmasi terbentuknya zeolit T, spektroskopi inframerah (FTIR) untuk mengkonfirmasi jenis ikatan yang terbentuk dan mikroskop pemindai elektron (SEM) untuk melihat morfologi zeolit T.
Implementasi Lembar Kerja Berbasis Proyek Melalui Pembuatan Permen Jelly Rendah Gula Audila, Meisya Shantya; Helsy, Imelda; Rahmatullah, Saepudin; Sundari, Citra Deliana Dewi; Aisyah, Riri
Jurnal Kajian Pendidikan IPA Vol 5 No 2 (2025): Jurnal Kajian Pendidikan IPA
Publisher : Universitas Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52434/jkpi.v5i2.42609

Abstract

This study aims to describe the implementation and feasibility of project-based worksheets through a low-sugar jelly candy making project in the Additive and Addictive Chemistry course. The project-based learning model was employed to foster active student engagement, enhance understanding of food additive concepts, and connect learning to everyday health issues. The study involved 30 sixth-semester students from the Chemistry Education Program and adopted a quantitative descriptive approach. The instruments used included observation sheets, worksheet assessments, posters, and presentations. All instruments were validated by three expert lecturers based on presentation, construct, content, and question aspects, with an average feasibility score of 89%, indicating that the instruments were highly suitable for use. Data analysis was conducted by calculating average scores using a percentage formula, which were then interpreted into specific assessment categories. The result showed average scores of 89 for student activity, 89 for worksheet completion, 97 for poster quality, and 88 for presentations. Each stage of the learning process was implemented systematically and demonstrated active student participation–from problem analysis to product publication. The final product low-sugar jelly candy, exhibited good quality in terms of texture, sugar content, and acceptability. All learning aspects were rated in the “very good” category. These findings suggest that project-based worksheets can serve as an effective learning medium to support student engagement in conceptual understanding, laboratory application, and communicative presentation of scientific results in chemistry learning. Keywords: Project-Based Learning, Worksheet, Jelly Candy
PEMBELAJARAN BERBASIS PROYEK PADA PEMBUATAN FACE TONER KEFIR BERAS MERAH (Oryza nivara) UNTUK MENGEMBANGKAN KINERJA ILMIAH Akila, Febiyuniesa Noorwahnov; Windayani, Neneng; Sundari, Citra Deliana Dewi; Sukmawardani, Yulia
Lantanida Journal Vol 13 No 2 (2025): July-December 2025: In Press ....
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/d5wrdc15

Abstract

This study aims to describe the project-based learning process in developing students' scientific performance with the help of project-based worksheets in making red rice kefir face toner (Oryza nivara), as well as analyzing the characteristics of the resulting face toner product. The method used was a pre-experimental design with a One-Shot Case Study, involving three groups of Grade XI Industrial Pharmacy students, using instruments validated by two experts in Chemistry Education and one vocational school teacher. The results showed that students' activities during the learning process achieved an average score of 92.4, and their scientific performance demonstrated significant improvement with an average score of 94.2, both falling into the “very good” category. Analysis of the product characteristics showed that all formulations of red rice kefir face toner (Oryza nivara) met SNI standards with good quality based on organoleptic parameters, pH, homogeneity, moisture content, and irritation, and the product received an average score of 97.5, categorized as excellent. Additionally, the IC50 value obtained was 73.13 ppm, indicating that this face toner has sufficiently strong antioxidant activity. These results demonstrate that project-based learning with the assistance of project-based worksheets is effective in developing students' scientific performance and producing innovative products.
Co-Authors Abdurahman, Dede Ade Yeti Nuryantini Akila, Febiyuniesa Noorwahnov Ani Sri Wahyuni Atthar Luqman Ivansyah Audila, Meisya Shantya Bebeh Wahid Nuryadin Dede Suhendar Firmansyah, Atthar Luqman Ginawanti Maulida Gunawan Halimahtussa’diah Halimahtussa’diah Imelda Helsy, Imelda Nurbaeti, Denia Febby Rahayu, Reni Fitriani Riri Aisyah, Riri Saepudin Rahmatullah, Saepudin Soni Setiadji Windayani, Neneng Yulia Sukmawardani, Yulia Yusuf Rohmatulloh