Article Per Year (5 Year)
p-Index From 2021 - 2026
2.57
P-Index
This Author published in this journals
All Journal Reaktor Komunikasi Fisika Indonesia Journal of Aceh Physics Society Spektra: Jurnal Fisika dan Aplikasinya Communications in Science and Technology Jurnal Fisika Indonesia Dinamika Lingkungan Indonesia Indonesian Journal of Physics (IJP) Aceh International Journal of Science and Technology Jurnal Material dan Energi Indonesia Science, Technology, and Communication Journal
Yanuar Hamzah
Jurusan Fisika FMIPA Universitas Riau, Pekanbaru, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics

Published : 30 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 30 Documents
Search

 1   2   3 
Cigarette filter butts-derived activated carbon with free binder electrode design for solid-state supercapacitor application: From hazardous waste to solid-state supercapacitor Hamzah, Yanuar; Taer, Erman; Apriwandi, Apriwandi; Supian, Faridah Lisa; Mozaffari, Niloofar; Mozaffari, Nastaran
Communications in Science and Technology Vol 8 No 2 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.2.2023.1252

Abstract

The aim of this research is to formulate activated carbon monolith from hazardous waste of cigarette filter butts (CFB) for electrode material monolith design in solid-state supercapacitor application. Potassium hydroxide (KOH) was selected for activation. The ratio of CFB to KOH varied in terms of weight between 1:2 and 1:4, thereby obtaining activated cigarette filter carbon (ACFC). The carbon that has been obtained is designed to be solidly in the form of an additive-free monolith. Monolith-activated carbon is physically characterized to examine thermal decomposition profiles (pre-carbonized), structure, composition, morphology, surface area adsorption, and electrochemical measurements. The optimum precursor was marked with high wettability with self-O-doped of 5.44%.in carbon content of 94.56%. Activated carbon electrodes prepared from ACFCs showed an optimum specific capacitance of ~87.17 F g-1, which is a more ecologically responsible method of producing supercapacitors.
Properties of BaTiO3 nanoparticles based on FTIR derived using Nephelium lappaceum L. leaf extract Dewi, Rahmi; Hamzah, Yanuar; Manik, Yohana; Ziliwu, Friska; Simbolon, Norsinta Ida; Syajali, Hidayati; Maulidya, Shintya; Ningrum, Yunita; Fatanah, Harum
Science, Technology and Communication Journal Vol. 4 No. 3 (2024): SINTECHCOM Journal (June 2024)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v4i3.268

Abstract

The properties of barium titanate (BaTiO3) nanoparticles synthesized with rambutan leaf extract (Nephelium lappaceum L.) were analyzed using Fourier transform infrared spectroscopy (FTIR) characterization techniques. Rambutan leaf extract contains bioactive compounds that have the potential to enhance unique physical and chemical properties. This study aims to analyze the properties of the nanoparticles and to characterize the functional groups present in BaTiO3 nanoparticles synthesized using rambutan leaves. The nanoparticle synthesis process involved extraction, followed by the preparation of a BaTiO3 solution and doping. The FTIR spectrum displayed characteristic peaks identifying the presence of functional groups. The results indicated that the region 3500 – 3200 cm-1 corresponds to O–H groups (alcohol and phenolic), the region 1700 – 1600 cm-1 to C=O groups (carbonyl), the region 1600 – 1500 cm-1 to C=C groups (alkene), and the region 1200 – 1000 cm-1 to C–O groups (ether). Each functional group exhibits distinct properties.
FTIR characterization analysis of BaTiO3 nanoparticles synthesized using Terminalia catappa leaf extract Hamzah, Yanuar; Dewi, Rahmi; Darmawan, Ade; Syahputri, Intan; Laia, Meinikmawati; Jannah, Miftahul; Silaban, Ruth Cahaya Marta Uli; Sari, Silvia Mayang; Sinaga, Sintia Selfiana; Zuyandri, Wandra
Science, Technology and Communication Journal Vol. 4 No. 3 (2024): SINTECHCOM Journal (June 2024)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v4i3.269

Abstract

Ferroelectric materials are materials that are in great demand in high-density memory applications, such as ferroelectric random access memory, ferroelectric field effect transistors, negative capacitance field effect transistors, and ferroelectric tunnel junctions. Barium titanate (BaTiO3) is a lead-free ferroelectric material with a high dielectric constant and low dielectric loss. The method used is sol gel for the synthesis of BaTiO3 solution, extract for ketapang (Terminalia catappa) leaves, and characterized by FTIR. The FTIR spectrum synthesized with ketapang leaf extract displays several characteristic peaks in the mid-infrared region (4000 – 400 cm-1). These peaks can be determined by the specific vibration mode of the structure and organic compounds contained in the ketapang leaf extract. BaTiO3 has a cubic perovskite structure with a peak wave number of 600 cm-1. Ketapang leaf extract is incorporated into the BaTiO3 structure. BaTiO3 has a Ti–O functional group. Ketapang leaf extract has C–O, C=O, C–H, and O–H functional groups.
Study of the structural, optical, and morphological properties of ZnO nanoparticle biosynthesis using betel leaf extract as a bioreductant Hamzah, Yanuar; Kartika, Nursiti Sari; Umar, Lazurdi
Indonesian Physics Communication Vol 21, No 3 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.3.227-232

Abstract

The biosynthesis of zinc oxide nanoparticles (ZnO) is extensively studied because of its eco-friendly and simple method. Piper ornatum is abundant in Indonesia, and the phytochemical content of Piper ornatum leaves has the potential to be a reductor. The study aims to study the role of Piper ornatum in biosynthesis and the characteristics of the zinc oxide nanoparticles. The sample variations in this study were the volume of Piper ornatum and the precursor solution of zinc nitrate hexahydrate Zn(NO3)2·6H2O in proportions of 1:1, 1:5, and 1:10. Characterizations performed include UV-Vis spectroscopy, X-ray diffraction (XRD), scanning electron microscopy, energy dispersive X-ray spectroscope and blue methylene degradation test. UV-Vis spectroscopy of all samples showed peak absorption at the interval of 250 – 330 nm, which indicates that ZnO nanoparticles have already formed. The results of characterization using XRD indicated the degree of crystallinity of the ZnO nanoparticles is not perfect because the crystal field (100) or the highest diffraction peak has a very large full width at half maximum value of 0.8187°. Characterization results using SEM indicate an inhomogeneous morphology and the presence of zinc oxide nanoparticle agglomeration where particle size distribution is at an interval of 170 – 758 nm.
Effect of holding time on optical structure properties of Ba(Zr0.5Ti0.5)O3 thin film using sol-gel method Hidayat, Taufiq; Dewi, Rahmi; Hamzah, Yanuar
Science, Technology and Communication Journal Vol. 1 No. 2 (2021): SINTECHCOM Journal (February 2021)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v1i2.28

Abstract

The ferroelectric thin film material of barium zirconium titanate (BZT) on the fluorine-doped tin oxide (FTO) glass substrate was successfully prepared using the sol-gel method. The purpose of this study was to determine the effect of crystal size on the variation of holding time. The lattice parameter data has a value of a = b of 3.918 Å and for c it is 4.01 Å. The results of this study indicate that the crystal structure of BZT is tetragonal because the lattice parameter has the same values a and b but not equal to c. To obtain the bandgap energy, a thin film plot method of Ba(Zr0.5Ti0.5)O3 was used at a temperature of 700°C with a holding time of 30 minutes, 1 hour, 1 hour 30 minutes, and 2 hours. The optical thin layer bandgap energy of Ba(Zr0.5Ti0.5)O3 was calculated using the Tauc plot. The absorbance values obtained were 3.277, 3.0654, 3.323, and 3.424 a.u. The maximum transmission (TM) occurs at 1 hour holding time which gives a percentage of TM1 44.477% and TM2 20.568%. While the 2 hour hold time gives a minimum transmission (Tm) of Tm1 10.859% and Tm2 7.759%, respectively.
Analysis of ferroelectric material BaTiO3 and mangosteen leaf extract using FTIR characterization Hamzah, Yanuar; Dewi, Rahmi; Asiyah, Putri Siti; Selasih, Dian; Putri, Ella Junian; Simanjuntak, Ignatius Bagas Sumual; Purba, Rosianna; Nahampun, Fernita; Fatimah, Desti Seri; Ghifariansyah, Abdu Rozaq
Science, Technology, and Communication Journal Vol. 5 No. 1 (2024): SINTECHCOM Journal (October 2024)
Publisher : Lembaga Studi Pendidikan dan Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v5i1.271

Abstract

Perovskite materials, including barium titanate (BaTiO3), are important ferroelectric materials in industry and research today. Ferroelectrics have unique properties such as piezoelectricity, high permittivity, and electrocaloric and electrooptic effects that are beneficial in technological applications. BaTiO3, for example, is a lead-free ferroelectric material relevant for FeRAM and ferroelectric tunnel junctions. However, research on BaTiO3 flexible thin films is still limited, especially in the context of flexible substrates. Therefore, research in the preparation of stable and flexible BTO ferroelectric films is crucial for the advancement of nonvolatile memory devices. The manufacturing method in this study is the Sol Gel Method where the relative molecular mass of BaCO3 material is calculated, then the mass value is entered with the composition of (X)BaTiO3-(1-X)BaZr0.5Ti0.503. After the test is performed using mangosteen leaves, the resulting wave peaks from the FTIR Spectroscopy analysis can be seen. This is one of the characterization methods used to analyze the molecular structure and functional groups of various materials from which samples are made. This analysis indicates that mangosteen leaves contain various organic compounds, including alcohols, alkanes, and carbonyl compounds. In this research, further development is needed so that improvements can be made in the synthesis of ferroelectric material BaTiO3 used as a stabilizing agent.
Fourier transform infrared analysis of orange peel ferroelectric material with BaTiO3 precursor Dewi, Rahmi; Hamzah, Yanuar; Manurung, Romarito Gesi; Sihombing, Ropina Emwarjati; Rahmi, Lailatul; Alamin, Rahmatan Lil; Yoga, Figo Swarna; Salsabila, Sonia; Yudani, Ananda Febri
Science, Technology, and Communication Journal Vol. 5 No. 1 (2024): SINTECHCOM Journal (October 2024)
Publisher : Lembaga Studi Pendidikan dan Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v5i1.270

Abstract

This study explores the potential of orange peel extract as a stabilizing agent in the synthesis of ferroelectric BaTiO3. Characterization using Fourier transform infrared (FTIR) spectroscopy revealed the presence of strong acidic functional groups (O-H stretching at 3300 cm-1 and C–H sp3 chain at 2800 – 2993 cm-1 and carbonyl groups of double C–O at 1650 cm-1 in orange peel extract. These findings indicate that orange peel contains organic compounds that can be utilized in various applications.
Green-synthesized ZnO and Ag nanoparticles: A comparative study of optical, morphology and structural properties for photocatalytic applications Hamzah, Yanuar; Emrinaldi, Tengku; Dewi, Rahmi; Rini, Ari Sulistyo; Umar, Lazuardi; Simatupang, Mediniah Putri; Rabiah, Rabiah; Noferdi, Muhammad Deri
Science, Technology, and Communication Journal Vol. 5 No. 3 (2025): SINTECHCOM Journal (June 2025)
Publisher : Lembaga Studi Pendidikan dan Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v5i3.307

Abstract

In this study, zinc oxide (ZnO) and silver (Ag) nanoparticles were synthesized using Annona muricata leaf extract as a reducing and stabilizing agent with variations in the molar ratio of 1:3, 1:5, and 1:7. Optical characterization using UV-Visible spectroscopy revealed that the variations of molar ratio influence the absorption peak and band gap energy of the resulting ZnO and Ag. UV-Vis results show that the molar ratio 1:5 was optimal for synthesizing ZnO and Ag. The band gap value of synthesized ZnO and Ag at a 1:5 molar ratio was 3.27 eV and 2.01 eV, with absorption peaks at 355 nm and 435 nm respectively. XRD characterization shows that ZnO nanoparticles has a hexagonal wurtzite structure with lattice parameters of a = 76 Å and c = 4. 95 Å and for Ag nanoparticles has a face centered cubic structure with lattice parameters a = b = c is 4.15 Å. Annona muricata leaves extract shows photocatalytic properties that can be applied to the degradation of polluted water. This shows that ZnO nanoparticles via green synthesis using Annona muricata leaf extract is a very simple, low-cost and environmentally friendly method.
Synthesis and characterization of optical properties of barium titanate (BaTiO3) with the addition of moringa, banana, matoa, and ketapang leaves extracts Dewi, Rahmi; Apriwandi, Apriwandi; Hamzah, Yanuar; Sari, Eza Tirta; Butarbutar, Kheny Kernila; Putri, Nadja Melika; Nathania, Nazhiwa; Aritonang, Surya Ardika; Hartini, Titin; Hayati, Fitri; Maslyah, Maharani Nur; Sawitri, Seli Novalin; Komariah, Siti; Nursyahara, Septia; Nuraini, Nasywa; Aisy, Rihla Datul; Safira, Putri; Rusmanianty, Rusmanianty; Pratiwi, Dinda; Adela, Adela; Pasaribu, Veny Sriulina; Azhara, Vina Naomi; Febrita, Ayang
Indonesian Physics Communication Vol 22, No 2 (2025)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.22.2.169-174

Abstract

Environmentally friendly synthesis of barium titanate (BaTiO3) nanoparticles was conducted using natural leaf extracts of Moringa oleifera, Musa spp., Pometia pinnata, and Terminalia catappa as green dopants via the sol-gel method. This study aims to evaluate the influence of different leaf extracts on the optical properties of BaTiO3 characterized by UV-Vis spectroscopy. Each sample exhibited distinct absorption spectra, reflecting variations in phytochemical composition among the extracts. The results showed that Terminalia catappa and Pometia pinnata extracts produced the highest band gap values, 3.36 eV and 3.35 eV respectively, indicating optical activity in the ultraviolet region. Musa spp. extract resulted in a band gap of 2.81 eV, while Moringa oleifera extract yielded the lowest value of 2.59 eV. These differences suggest that the type of plant extract significantly affects the optical characteristics of the synthesized BaTiO3. This research highlights the potential use of local biomass in the development of functional BaTiO3-based materials through green synthesis approaches.
Physical properties of oil palm fresh fruit bunch varieties Shiddiq, Minarni; Hamzah, Yanuar; Nasir, Zulfa; Amanullah, Farid; Rabin, Mohammad Fisal; Dasta, Vicky Vernando
Science, Technology, and Communication Journal Vol. 6 No. 1 (2025): SINTECHCOM Journal (October 2025)
Publisher : Lembaga Studi Pendidikan dan Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v6i1.336

Abstract

Identification of oil palm fresh fruit bunches (FFB) based on variety is a crucial step in sorting and grading FFBs to produce good-quality crude palm oil (CPO). Most palm oil mills receive two varieties of FFBs at the reception stations, Tenera and Dura, and only a certain percentage of the Dura variety is allowed in a transporting truck. The conventional identification is destructive, cutting several fruits off an FFB bunch and checking for fruit Mesocarp and shell thickness. The method suffers a high increase in free fatty acid (FFA) content. This study is a preliminary study using computer vision and image processing to differentiate the two varieties based on their physical properties. The samples consisted of 20 Dura and 20 Tenera FFBs, 10 unripe and 10 ripe FFBs. The FFB images were acquired for both front and back sides using a color CMOS camera. ImageJ software was used to obtain the number of outer fruits and bunch surface area, used to calculate fruitlet density. Both varieties are also compared based on mass and by red, green, and blue (RGB) intensities. The results were compared to the results measured manually. The results showed that the Tenera variety exhibited higher fruit density, fruitlet count, RGB intensity compared to the Dura variety. Both varieties have higher correlations between fruit density and their masses. These results show the potential of computer vision and image processing methods to differentiate Tenera and Dura varieties, used for sorting and grading oil palm FFBs.
Co-Authors Adela, Adela Aisy, Rihla Datul Akrajas Ali Umar Alamin, Rahmatan Lil Amanullah, Farid Apriwandi Apriwandi . Ariswan Ariswan Ariswan Ariswan Aritonang, Surya Ardika Asiyah, Putri Siti Awitdrus Awitdrus, Awitdrus Azhara, Vina Naomi Butarbutar, Kheny Kernila Darmawan, Ade Dasta, Vicky Vernando Dewi Ramayani Dian Putri Oktavia Dian Putri Oktavia, Dian Putri Erman Taer Erwin Erwin Erwin Erwin Fachry Abda El Rahman Fatanah, Harum Fatimah, Desti Seri Febrita, Ayang Fitri Hayati Ghifariansyah, Abdu Rozaq Iwantono Iwan Barnawi Jimmy Copriady Kartika, Nursiti Sari Krisman Krisman Laia, Meinikmawati Lailatul Rahmi Lazuardi Lazuardi Lazuardi Umar Lazuardi Umar Liong Nyuk Firdaus Manik, Yohana Manurung, Romarito Gesi Maria Sonya Nauli Nainggolan Maslyah, Maharani Nur Maulidya, Shintya Maya Sari Mega Wati Siregar Melinda Vivi Miftahul Jannah Minarni Shiddiq, Minarni Mozaffari, Nastaran Mozaffari, Niloofar Muhammad Mardhiansyah Nahampun, Fernita Nasir, Zulfa Nathania, Nazhiwa Ningrum, Yunita Noferdi, Muhammad Deri Novi Yanti Nuraini, Nasywa Nursyahara, Septia Pasaribu, Veny Sriulina Pratiwi, Dinda Purba, Rosianna Putri, Ella Junian Putri, Nadja Melika Rabiah Rabiah Rabin, Mohammad Fisal Rahmi Dewi Rahmondia N. Setiadi Rahmondia N.S ' Rakhmawati Farma Rati, Yolanda Rini, Ari Sulistyo Rini, Ari Sulistyo Rosman Parningotan Rusmanianty, Rusmanianty Safira, Putri Salomo Salomo Salomo Salomo Salsabila, Sonia Sari, Eza Tirta Sari, Silvia Mayang Sawitri, Seli Novalin Selasih, Dian Sihombing, Ropina Emwarjati Silaban, Ruth Cahaya Marta Uli Simanjuntak, Ignatius Bagas Sumual Simatupang, Mediniah Putri Simbolon, Norsinta Ida Sinaga, Sintia Selfiana Siti Komariah Sugiyanto Sugiyanto Supian, Faridah Lisa Susi ' Syahputri, Intan Syajali, Hidayati Tengku Emrinaldi Tengku Said Hussain Shahab Tetty Marta Linda Titin Hartini Umar, Lazurdi Usman Malik Usman Malik Usman Usman Yenny Desvita Yoga, Figo Swarna Yudani, Ananda Febri Ziliwu, Friska Zulfan Saam Zuyandri, Wandra