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All Journal Jurnal Penelitian Saintek Jurnal Sains Dasar Indonesian Journal of Chemistry and Environment Jurnal Elemen Kimia Jurnal Riset Pembelajaran Kimia
M. Pranjoto Utomo
Universitas Negeri Yogyakarta
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Materials Science & Nanotechnology

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SINTESIS DAN KARAKTERISASI KOMPOSIT PbO-ZEOLIT ALAM UNTUK FOTODEGRADASI ZAT WARNA CONGORED Farah Noer Aina Arifin; M Pranjoto Utomo
Jurnal Elemen Kimia Vol 7, No 1 (2018): Jurnal Kimia Dasar
Publisher : Universitas Negeri Yogyakarta

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Abstract

Penelitian ini bertujuan untuk mensintesis dan mengkarakterisasi komposit PbO-zeolit, mengetahui polaisoterm adsorpsi serta kondisi optimum pada fotodegradasi congo red dengan komposit PbO-zeolit. Komposit PbOzeolitdisintesis dengan metode sol-gel menggunakan perkursor zeolit alam dan Pb(CH3COO)2. Hasil sintesisdikarakterisasi menggunakan XRD, FTIR, UV-Vis Diffuse Reflectance dan SEM-EDX. Uji aktivitas fotokatalitikyang dilakukan yaitu: uji adsorpsi pada keadaan gelap, uji aktivitas fotokatalitik dengan sinar UV dan uji aktivitasfotokatalitik dengan sinar tampak. Karakter komposit PbO-zeolit diperoleh bahwa serapan PbO muncul padabilangan gelombang 578,64 cm-1, material zeolit berukuran 5-13 mikrometer sedangkan material PbO denganukuran 0,2-0,4 mikrometer. Persentase massa element Pb = 2,99% dan energi celah pita komposit PbO-zeolitadalah 2,1 eV. Kondisi optimum pada proses fotodegradasi dengan sinar tampak yaitu pada konsentrasi 2x10-5 Mdengan persen degradasi 91% sedangkan pada sinar UV pada konsntrasi 3x10-5 M dengan persen degradasi 90%.Uji adsorpsi pada keadaan gelap komposit PbO-zeolit mengikuti pola isoterm Freundlich.
SINTESIS DAN KARAKTERISASI KOMPOSIT PbO-ZEOLIT UNTUK FOTODEGRADASI ZAT WARNA METILEN BIRU Athoourrohman Athoourrohman; M Pranjoto Utomo
Jurnal Elemen Kimia Vol 7, No 1 (2018): Jurnal Kimia Dasar
Publisher : Universitas Negeri Yogyakarta

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Abstract

Penelitian ini bertujuan untuk mempreparasi dan mensintesis senyawa komposit PbO-zeolit danmengetahui karakter senyawa PbO-zeolit. Komposit PbO-zeolit menggunakan metode sol-gel dengan prekursorzeolit alam dan Pb(CH3COO)2.3H2O. Hasil sintesis dikarakterisasi menggunakan XRD, FTIR, SEM-EDX dan UVVISDiffuse Reflectance. Uji aktivitas katalis komposit PbO-Zeolit terhadap metilen biru dilakukan pada keadaangelap, uji fotokatalis dilakukan dibawah sinar tampak. Komposit PbO-zeolit menggunakan metode sol-gel,hasil analisis komposit PbO-zeolit menunjukkan ukuran kristal sebesar 23,2 nm, menunjukkan adanyaserapan PbO pada bilangan gelombang 501,49 cm-1, material zeolit yang terdapat dalam komposit PbOzeolitberukuran 2 - 8 mikrometer, material timbal oksida (PbO) dengan ukuran 0,5 - 2 mikrometer,komposisi unsur dari komposit PbO-zeolit menunjukkan persentase massa element Pb adalah 2,99% danbesar energi dispersi atom Pb adalah 2,342 keV, energi celah pita (Eg) komposit PbO-zeolit adalah 2,7eV. Uji adsorpsi metilen biru menujukkan penyerapan isoterm Freundlich.
THE INFLUENCE OF THE USING OF VIRTUAL LAB ON THE CHEMISTRY LEARNING MOTIVATION AND ACHIEVEMENT OF GRADE XI STUDENTS OF SMA NEGERI 1 SLEMAN SEMESTER 2 ACADEMIC YEAR 2015/2016 Marita Dean Rachma; M.Pranjoto Utomo
Jurnal Riset Pembelajaran Kimia Vol 5, No 4 (2016): Volume 5, No 4 Edisi 4 Tahun 2016
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jrpk.v5i4.3837

Abstract

This study was aimed to determine whether there is any significantdifference in motivation to learn chemistry or not before and after the using ofacid-base virtual lab, whether there is any significant increasing in motivation tolearn chemistry or not between the students who use acid-base virtual lab inpracticum activity and who do not, whether there is any significant difference inlearning achievement or not if prior knowledge is statistically controlled.This study was designed as a research experiment with one factor design,two variables, and one co-variable. One factor was in the form of learning media,two variables motivation and learning achievement, one co-variable was of priorknowledge. Samples of this research were two classes of grade XI students ofSMA Negeri 1 Sleman. One class was given a treatment of the use of virtual lab(experiment class) and one class was not (normal class). The data were collectedwith documentation technique, exercises, and inquiries. Motivations andachievements data were analyzed using same subject t-test, different subject t-test,and covariant test.The results of this research show that there is any significant difference inthe motivation of students’ before and after the using of acid-base virtual lab,there is no significant increasing in learning motivation between students’ whoused acid-base virtual lab in practicum activity with who did not, there areincreasing in achievement and motivation to learn chemistry if prior knowledge isstatistically controlled.
Synthesis of Natural Zeolite/ZnO and its photodegradation activity on congo red M. Pranjoto Utomo; A. K. Prodjosantoso; Kun Sri Budiasih; Isti Yunita; Tisia Miftakhul Triani; Vera Dwi Nur Rahmawati
Indonesian Journal of Chemistry and Environment Vol 6, No 2 (2023): DECEMBER 2023
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v6i2.68334

Abstract

Dyes are the most common compound used in the textile industry. Dyes consisted of azo compound that is difficult to be degraded. Undegradated azo compound, such as congo red, danger for the environment. An alternative effort to handle congo red waste must be conducted. Natural zeolite/ZnO is a material that can be used to degrade congo red to be simpler compound. Based on the analysis, the characters of natural zeolite/ZnO are hexagonal wurtzite structure, particle size 24.264 nm, band gap energy 2.96 eV. The highest degradation percentage in photodegradation activity of natural zeolite/ZnO on congo red is 99.41%.
Photodegradation of rhodamine B over natural zeolite/ZnO Utomo, M. Pranjoto; Prodjosantoso, Anti Kolonial; Budiasih, Kun Sri; Yunita, Isti; Triani, Tisia Miftakhul; Rahmawati, Vera Dwi Nur
Indonesian Journal of Chemistry and Environment Vol. 7 No. 1 (2024): JUNE 2024
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v7i1.74067

Abstract

Rhodamine B is dye compound commonly used in the textile industry that consisted of azo compound. Azo compound generally difficult to be degraded. Undegradated azo compound in rhodamine B make it danger for the environment. An effective effort to handle rhodamine B waste must be conducted. Natural zeolite/ZnO is a material that can be used to degrade rhodamine B to be simpler compound based on photodegradation procces. Based on the analysis, the particle size of natural zeolite/ZnO is 16.92709 nm and the band gap energy 2.92 eV. The highest degradation percentage of rhodamine B over natural zeolite/ZnO under UV irradiation is 99.54%.
PENGARUH MEDIA YOUTUBE (CHEMTUBE) TERHADAP HASIL BELAJAR SISWA KELAS X MIPA SMAN 1 TALUN, BLITAR Ciptarini, Novita Dwi; Utomo, M. Pranjoto
Jurnal Riset Pembelajaran Kimia Vol 8, No 1 (2023): Jurnal Riset Pembelajaran Kimia
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jrpk.v8i1.20626

Abstract

Penelitian ini bertujuan untuk mengetahui ada tidaknya perbedaan penggunaan media Youtube (ChemTube) dan tanpa penggunaan media Youtube (ChemTube) terhadap hasil belajar siswa, serta level pencapaian hasil belajar siswa kelas X MIPA SMA N 1 Talun, Blitar pada materi larutan elektrolit dan nonelektrolit. Metode penelitian yang digunakan adalah kuasi eksperimen dengan post-test only design. Penelitian dilakukan di SMA N 1 Talun, Kabupaten Blitar, Provinsi Jawa Timur. Sampel berjumlah 72 siswa dari kelas X MIPA yang dibagi menjadi 2 kelompok yaitu kelas eksperimen dan kelas kontrol. Data yang diambil adalah data skor post-test materi larutan elektrolit dan nonelektrolit. Teknik pengumpulan data yang digunakan adalah teknik tes yaitu post-test yang terdiri dari 25 butir soal objektif. Pelaksanaan post-test dilakukan secara daring melalui platform google form. Hasil penelitian menunjukkan bahwa tidak terdapat perbedaan hasil belajar (kognitif) antara pembelajaran dengan menggunakan media Youtube (ChemTube) dan tanpa menggunakan media Youtube (ChemTube). Level pencapaian hasil belajar siswa kelas X MIPA di SMA N 1 Talun, Blitar dalam materi larutan elektrolit dan nonelektrolit berada dalam kategori sedang dengan persentase 65,2%.
Co-Authors A.K Prodjosantoso A.K Prodjosantoso Athoourrohman Athoourrohman Christyan, T. Ciptarini, Novita Dwi Endang Widjajanti Laksono FX Endang Widjayanti LFX Farah Noer Aina Arifin Isthifaul Mawaddah Isti Yunita Kolonial Prodjosantosa, Anti Kun Sri Budiasih Marita Dean Rachma Muhammad Shobirin Rahmawati, Vera Dwi Nur Regina Tutik Padmaningrum Rini Wulandari Rostyalina Rostyalina Syaiful Amri Tisia Miftakhul Triani Triani, Tisia Miftakhul Vera Dwi Nur Rahmawati Yunita, Isti