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All Journal EKSAKTA: Journal of Sciences and Data Analysis Fullerene Journal of Chemistry Oxygenius Journal Of Chemistry Education Frontiers
Tengker, Soenandar Millian Tompunu
Universitas Negeri Manado
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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SINTESIS DAN KARAKTERISASI MATERIAL MESOPORI NI/MCM-41 DAN PENGARUH PENAMBAHAN LOGAM NIKELA TERHADAP TINGKAT KEASAMAN MATERIAL Tengker, Soenandar M. T.
FRONTIERS: JURNAL SAINS DAN TEKNOLOGI Vol 2, No 3 (2019): DESEMBER 2019
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (995.121 KB)

Abstract

Sintesis MCM-41telah dilakukan mulai dari tahap pelarutan cetyltrimethylammonium bromide (CTAB) sebagai cetakan pori, kemudian ditambahkan tetramethylammonium hydroxide (TMAOH) untuk meningkatkan stabilitas material. Proses kristalisasi dilakukan dengan menambahkan natrium silikat dan natrium aluminat tetes demi tetes ke dalam larutan. Selanjutnya dilakukan proses hidrotermal pada suhu 90oC selama 36 jam, kemudian dicuci, dikeringkan dan dikalsinasi pada suhu 540oC. Katalis Ni/MCM41 dibuat dengan cara mencampur padatan MCM-41 hasil sintesis ke dalam larutan NiCl2.6 H2O 0,5 M. Campuran disaring dan dicuci menggunakan akuades, kemudian dikeringkan dalam oven pada suhu 80 oC selama 24 jam. Hasil padatan setelah kalsinasi merupakan material mesopori Ni/MCM-41. Material dikarakterisasi menggunakan XRD dan FTIR. Hasil Penelitian menunjukan bahwa penambahan ion H+ pada MCM-41 menjadi Ni/MCM-41 dapat meningkatkan tingkat keasaman material sehingga sangat baik digunakan sebagai bahan katalis.
Sintesis dan karakterisasi material mesopori MCM-41 menggunakan TMAOH dan garam anorganik K2SO4 Soenandar Milian Tompunu Tengker; Iip Izul Falah
Jurnal Kimia Fullerene Vol 2 No 2 (2017): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (517.5 KB) | DOI: 10.37033/fjc.v2i2.10

Abstract

The MCM-41 synthesis has been performed starting from the dissolution stage of cetyltrimethylammonium bromide (CTAB) as a pore mold, then added tetramethylammonium hydroxide (TMAOH) and sodium sulfate salt (K2SO4) to improve the stability of the material. The crystallization process is carried out by adding sodium silicate and sodium aluminate dripwise into the solution. Decrease in pH of the solution was done by adding sulfuric acid (H2SO4 50%). The hydrothermal process is then carried out at 90°C for 36 hours, then washed, dried and calcined at 540°C. MCM-41 synthesis results were characterized using XRD, FTIR and TEM. The results showed that MCM-41 was successfully synthesized with a high degree of crystallography with 48Å lattice parameter size and had a uniform hexagonal pore structure.
Ekstraksi dan Identifikasi Komponen Utama Pasir Putih dari Desa Marinsow Kabupaten Minahasa Utara dengan Pengujian XRF dan XRD Billy Gabriel Langi; Meyti J Rampe; Soenandar M T Tengker
Jurnal Kimia Fullerene Vol 5 No 2 (2020): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v5i2.186

Abstract

North Sulawesi is one of the regions in Indonesia which has a wealth of natural resources which is quite abundant, one of the natural potential that can be utilized is White sand. White sand has a composition that is SiO2, CaO, Fe2O3, TiO2, MgO. This study aims to identify the composition of the main components of white sand through XRF testing and the results of extraction of white sand from Marinsow village using the alkaline fusion method, NaOH solution for extracting and crystallizing the formation of silica crystals and tested using XRD testing to determine the crystal characteristics. Extraction and testing processes have been carried out using XRF and XRD on white sand samples taken in Marinsow Village, North Minahasa Regency. The results of the identification of the components of the white sand constituents through XRF testing namely CaO is the largest main component of the white sand compilers in the village of Marinsow which is as much as 89.97%. The content of SiO2 compounds in white sand (Marinsow) is as much as 1.41%. Other components found in white sand from Marinsow village, North Minahasa Regency include MgO as much as 5.85%, SrO as much as 2.31%, Fe2O3 as much as 0.277 %, TiO2 is 0.079%, Cr2O3 is 0.032%, Nb2O5 is 0.0238%, MoO3 is 0.0159%, SnO2 is 0.0082%, Sb2O3 is 0.0079% and RuO4 is 0.0074%. The results of XRD testing on white sand taken in the village of Marinsow give results that white sand has a calcite crystal structure (CaO) and for the SiO2 silica component is quartz.
Karakterisasi material mesopori Ni/MCM-41 dan pengaruh penambahan logam nikel terhadap tingkat keasaman material Soenandar Milian Tompunu Tengker; Jenny Kumajas
Jurnal Kimia Fullerene Vol 4 No 2 (2019): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (518.142 KB) | DOI: 10.37033/fjc.v4i2.83

Abstract

Mesoporous material MCM-41 cannot be used directly as a catalyst, so need to be added metals or nonmetals to create an acidic site. Nickel is a Lewis acid metal because it is able to accept lone pairs of electrons from ligands to form complex compounds. The purpose of this study was to produce mesoporous material Ni/MCM-41 and to see the effect of the addition Nickel metal to the acidity level of mesoporous material Ni/MCM-41.Tthe ion exchange method is used to produce Ni/MCM-41 and the gravimetric method to test the acidity of the material. The MCM-41 used for Ni/MCM-41 synthesis has an x-ray diffraction pattern with a hexagonal structure that is identical with the MOC researchers results. BET results is showed the type IV of the Langmuir adsorption isotherm with a surface area of ​​Ni/MCM-41 material 775.9 m2/g, pore volume 0.81 cc/g and pore radius 15.2 Å. TEM characterization shows the morphological shape of Ni/MCM-41 in the form of hexagonal structure. The acidity test results of Ni/MCM-41 material have a higher acidity level compared to MCM-41. Based on the research data, it can be concluded that Ni/MCM-41 has a morphological form with a hexagonal structure, has a large surface area and has a pore size classified as mesoporous material and has a higher acidity level than the MCM-41 synthesized.
Analisa Sifat Kemagnetan Polimer Poliethylen Glycol (PEG-4000)-coated Nanopartikel Magnetite Fe3O4 Menggunakan Vibrating Sample Magnetometer (VSM) Alfrie Musa Rampengan; Soenandar Milian Tompunu Tengker
Jurnal Kimia Fullerene Vol 6 No 2 (2021): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v6i2.376

Abstract

Iron oxide (Fe3O4) nanoparticles have been synthesized using coprecipitation method. Characterization of the magnetic properties of iron oxide (Fe3O4) nanoparticles using Transmission Electron Microscopy (TEM) shows a loop hysteresis curve on Fe3O4 magnetite nanoparticles with a value of Mr 7.7 emu/g at 0 kOe field, Ms 68.2 emu/g at an external field 14 ,61 kOe. A low Mr value or close to zero indicates that the Fe3O4 nanoparticle material is softmagnetic. Fe3O4 nanoparticles that had been modified with PEG-4000 polymer showed a Ms value of 55.7 emu/g in a 14 kOe field, an Hc coercivity field of about 60 Oe, and a Mr. 6.3 emu/g value in a 0 kOe field. The smaller the particle size, the more likely the material has a single magnetic domain. The smaller the sample particle size, the smaller the remanent magnetization value. The smaller the value of remanent magnetization, the residual magnetization that is still possessed by a material/sample when it is not affected by an external magnetic field is also greater.
Identifikasi gula spesifik pada aglutinin dari rumput laut Jenny Kumajas; Soenandar Millian Tompunu Tengker
Jurnal Kimia Fullerene Vol 4 No 2 (2019): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.013 KB) | DOI: 10.37033/fjc.v4i2.51

Abstract

Agglutinin or lectin is a protein or glycoprotein that binds saccharide specifically. The substance can agglutinate cells, because of the cells surfaces consist of saccha- rides. Halymenia durvillaei, Laurencia obtusa and Ulva fasciata, contain agglutinin. Cells agglutination by agglutinin can be inhibited by specific saccharide which is its specific sugar. This research aims to determine the specific sugar of agglutinin from Halymenia durvil laei, Laurencia obtusa and Ulva fasciata seaweeds. The researched shows that specific sugar on agglutinin of Laurencia obtusa is D-Glucosamine, and Ulva fasciata is D(+)-Glucose.
Analisis pengaruh penambahan ion H+ pada sintesis material mesopori Al-MCM-41 menjadi H-MCM-41 Soenandar Milian Tompunu Tengker; Iip Izul Falah
Jurnal Kimia Fullerene Vol 3 No 1 (2018): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (500.999 KB) | DOI: 10.37033/fjc.v3i1.27

Abstract

The synthesis of mesoporous Al-MCM-41 material made into H-MCM-41 has been done by mixing 5 grams of Al-MCM-41 synthesis into 100 ml of 0.5 M NH4Cl solution, then filtered and washed and dried in an oven at temperature 80 oC for 24 hours. The acid sites contained in the mesoporous material of H-MCM-41 are the Brønsted acid sites (B) and Lewis acid sites (L). The mesoporous material of H-MCM-41 synthesis shows morphological form of hexagonal pore such as honeycomb. It also makes clear that CTAB as a pore structure steering agent has succeeded in forming a hexagonal phase pore from mesoporous H-MCM-41 synthesized material. The size of the pore diameter of the mesoporous material of H-MCM-41 synthesis was 2.88 Å measured using a measuring ruler based on the scale of the resulting image analysis using TEM.
Pengaruh Penerapan Video Pembelajaran Melalui Google Classroom Pada Materi Larutan Elektrolit dan Non Elektrolit Terhadap Hasil Belajar Siswa di SMA N 1 Langowan Merly Mira Mangirang; Soenandar Milian Tompunu Tengker
Oxygenius Journal Of Chemistry Education Vol 4 No 1 (2022): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v4i1.349

Abstract

The purpose of this study was to determine the effect of the application of learning videos through Google Classroom on the learning outcomes of X Mipa 4 students at SMA N 1 Langowan. This research is a quantitative research using experimental method using One-Group pretest-posttest design. The population taken is all class X MIPA SMA N 1 Langowan, the sample consists of 1 class, namely X MIPA 4 as an experimental class, totaling 32 students. Data collection was done by giving a pretest before the learning process was carried out, and a posttest after the learning process. Data The results obtained in the form of the difference between the pretest and posttest in the experimental class are 40.4 and the average pretest is 47.7, while the posttest average is 88.1. get that the data is normally distributed. Furthermore, the test through t-test, the results obtained between the experimental class are significant, namely tcount = 18.60 > ttable = 1.998. Thus, it can be concluded that the Google Classroom learning media which contains video can affect student learning outcomes.
Pengaruh Model Pembelajaran Inkuiri Terbimbing Terhadap Hasil Belajar Pada Materi Ikatan Kimia Di Man Model 1 Manado Soenandar Milian Tompunu Tengker; Dhysa Mentari Sulistyaningsih
Oxygenius Journal Of Chemistry Education Vol 2 No 2 (2020): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v2i2.182

Abstract

the purpose of this study is to there is influence average learning outcomes students who follow learning to use with those who do not use the guided inquiry model. this research was conducted in class X MAN MODEL 1 MANADO odd semester of the school year 2019/2020. this research is using an experimental method by sampling obtained class X mipa 8 as a 9 as a control class. data collection using learning outcomes test. value is with thitung 3,62 > ttabel 2,011. this means that there is a significant influence on chemical bonding material.
Sintesis dan Karakterisasi Nano ZnO Menggunakan Bioreduktor Ekstrak Daun Kopasanda (Chromolaena Odorata L.) Astuti Amin; Soenandar Tengker
Jurnal Kimia Fullerene Vol 7 No 1 (2022): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v7i1.511

Abstract

Nanopartikel seng merupakan material yang banyak digunakan dalam industri farmasi dan kosmetik, sebagai tabir surya, pemutih kulit, dan antiaging. Tujuan dari penelitian adalah untuk mensintesis nanopartikel seng menggunakan ekstrak etanol daun kopasanda sebagai stabilizer dengan metode reduksi kimia dan menentukan pengaruh kadar ekstrak etanol daun kopasanda terhadap kestabilan seng nanopartikel. Pada penelitian ini, bahan baku yang digunakan adalah daun kopasanda kemudian diproses dengan beberapa tahap yaitu sortasi basah, penucian,perajangan, pengeringan dan sortasi kering kemudian dimaserasi hingga didapatkan ekstrak kental . Rendamen ekstrak etanol daun kopasanda yang didapatkan adalah 23,79%. Ekstrak etanol daun kopasanda digunakan sebagai reduktor untuk mensintesis nanopartikel seng terhadap ZnO dalam larutan Zn(NO3)2.4H2O. Dari hasil pengukuran berdasarkan spektrofotometri UV-Vis diperoleh panjang gelombang maksimum 354,70 nm dan absorbansi sebesar 1,062 . Berdasarkan pengukuran dengan Particle Size Analyzer (PSA) nanoptartikel seng yang telah disintesis memiliki ukuran rata-rata partikel dalam sampel yaitu 213,6 nm.
Co-Authors Alfrie Musa Rampengan Astuti Amin Astuti Amin Billy Gabriel Langi Budi Oktavia Dhysa Mentari Sulistyaningsih Emma Julin Pongoh Freetje Waworuntu Iip Izul Falah Jeanne M. Tuerah Jeferson Polii Jenny Kumajas Merly Mira Mangirang Meyti J Rampe Omega Siwu Ravelita Lastriawati Bullu reity feronika Manenda Rymond J. Rumampuk Vlagia I. Paat Wahyu Hendrarti