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All Journal International Journal of Evaluation and Research in Education (IJERE) Jurnal Periodic Jurusan Kimia UNP Geoplanning : Journal of Geomatics and Planning Jurnal Riset Kimia JOIV : International Journal on Informatics Visualization Jurnal Penelitian Pendidikan IPA (JPPIPA) Orbital: Jurnal Pendidikan Kimia Indonesian Journal of Chemistry Jurnal Serambi Engineering JURNAL PENDIDIKAN TAMBUSAI Eksakta : Berkala Ilmiah Bidang MIPA Pelita Eksakta PAKAR Pendidikan Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Edukimia Entalpi Pendidikan Kimia Narra J BIOCHEPHY: Journal of Science Education Automotive Experiences Jurnal Pijar MIPA Journal of Community Service Makara Journal of Science Edu Research : Jurnal Penelitian Pendidikan MASALIQ: Jurnal Pendidikan dan Sains Entalpi Pendidikan Kimia Jurnal Kimia dan Rekayasa Ranah Research : Journal of Multidisciplinary Research and Development Chimica Didactica Acta : Journal of Chemistry and Chemistry Education Biosaintifika: Journal of Biology & Biology Education Jurnal Pendidikan MIPA Prosiding Seminar Nasional Ilmu Sosial dan Teknologi (SNISTEK) Jurnal Pendidikan Kimia, Fisika dan Biologi Genbinesia Journal of Biology

Rahadian Zainul

Department Of Chemistry, Faculty Of Mathematics And Natural Science (FMIPA), Universitas Negeri Padang, Padang, Indonesia

Author-ID : 1131190

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Pengaruh Penambahan Konsentrasi (NH2)2CO Terhadap Karakteristik TiO2 dan Aktifitas Fotokatalitiknya Dalam Mendegradasi Methylene Blue Novera Elsi Mudia; Rahadian Zainul; Deski Beri; Syamsi Aini
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Titanium dioxide (TiO2) is a semiconductor material that is often applied as a photocatalyst. TiO2 has a band gap of 3.20 eV which is less effective when used in visible light. Nitrogen dopants are dopants that have high effectiveness to improve the performance of TiO2 in the visible light region. This study aims to determine the effect of adding nitrogen dopant concentration on the characteristics of TiO2 and its photocatalytic activity in degrading methylene blue. The photocatalytic activity of TiO2-N was tested with 10 ppm methylene blue under sunlight for 1 hour. The addition of dopants to the TiO2 matrix has an effect on the band gap and photocatalytic activity of TiO2

SINTESIS DAN KARAKTERISASI NANO ZnO DOPING CU Siltiwi Mandar; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 8, No 1 (2019): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The photodegradation process is a combination of photochemical processes with catalysts which are generally semiconductor materials. One of the photocatalysts that is being developed is zinc oxide (ZnO) in nanometer size to optimize the degradation process of organic compounds. Synthesis Nano zinc oxide (ZnO) can use the sol-gel method, the sol-gel method is the best method in making nanoparticles that produce uniform size and high purity. XRD (X-Ray Diffraction) test results show the size of Nano zinc oxide (ZnO) which is 27 nm. Nano zinc oxide (ZnO) has a band band 3.37 eV so that it is less suitable to be applied to visible light. Therefore it is necessary to do coupling with other metals such as Cu. The results of Nano zinc oxide (ZnO) doped Cu 7% have a low band gap of 2.57 eV so that it is easy to excite valence band electrons to the conduction band.

Degradasi Asam Humat Dengan Katalis TiO2/N Menggunakan Cahaya Matahari Syifa Rahma Ayunda; Rahadian Zainul; Budhi Oktavia; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Humic acid is a heterogeneous molecule of organic substance present in a peat water, which is carcinogenic is difficult to degrade. This study aims to degrade humic acid using the photocatalyst method is an environmentally friendly method. The photocatalyst used was TiO2 doped Nitrogen 8%. This study used reactor mobile hexagonal with variations in stirring speed, namely 500, 1000 rpm, and without stir with an irradiation time of 1 to 3 hours. Result of degradation analyzed using UV-Vis spectrophotometer. The degradation results obtained using strirring have a higher percentage of degradation than without strirring. The maximum degradation percentage obtained in this study was 76,27% with 500 rpm strirrings at 2 hours irradiation.

Pembuatan Lapis Tipis TiO2 pada Keramik Dengan Metode Dip Coating untuk Asam Humat Rohadatul Nadya Maurani; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 8, No 1 (2019): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

TiO2 thin layer on ceramic with dip coating method and photocatalyst activity test in humic acid. One of the photocatalysts used for the degradation of humic acid is TiO2, because TiO2 has several advantages, including non-toxic, stable, high activity, relatively cheap and environmentally friendlyThis study was performed using TTIP as a precursor and MEA as an additive in isopropanol. Addition of MEA influences the stability of the titanium solution. Ceramics were coated in a 0.5 M TiO2 solution by a dip coating method, then dried in an oven at 110°C for 10 minutes and furnace at 400°C for 2 hours. The maximum degradation of humic acid during 24 hours is 57.73% and in the form of 3.76% using an 8-watt UV lamp.

EFEK KONSENTRASI LARUTAN NaCl TERHADAP KEMAMPUAN FOTOREAKTOR HEKSAGONAL BERBASIS PLAT CuO/Al Afria Yolanda; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v9i2.109575

A solar cell (photovoltaic cell) is a device that has the ability to convert sunlight energy into electrical energy by applying the photovoltaic principle. The photovoltaic principle is defined as a phenomenon of the appearance of an electric voltage due to the contact of two electrodes connected to a solid or liquid system when exposed to sunlight. This study aims to determine the maximum power generated from the photoreactor, determine the effect of concentration variations and determine the efficiency of the photoreactor. The method in this study is an experiment using photovoltaic cells in the form of a hexagonal photoreactor with a size of 3x70x400 mm and a concentration variation of 0.25; M 0.5 M; 0.75 M; and 1 M. The variables in this study were the time of measurement and concentration. Current and voltage measurements are carried out 5 hours a day for 3 days of measurement. The results showed that the optimum concentration of sodium chloride was at a gelation concentration of 0.75 M. The measurement time that produced the maximum power was at 13.00 WIB, then the stability of the solar cells on day 2.The maximum power obtained was 0.0288 mWatt and the ability of the electrodes to produce electricity per area is 11.8907 mWatt / m2 with a cross-sectional area of the electrode used is 0.0183 m2. And the maximum efficiency obtained is 1.0034%. From the research results obtained: The greater the concentration of sodium chloride, the greater the power produced

Degradasi Rhodamin B Menggunakan Katalis TiO2-N dan Oksidator Hidrogen Peroksida Cika Dania Marca; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

This research studies the degradation of rhodamine b with oxidator of hydrogen peroxide and determine how much time the optimum degrade rhodamin b as well as the percent degradation using the photocatalytic method. The photocatalyst used for degradation is TiO2-N 8%. The degradation was carried out with variation the concentrations of hydrogen peroxide 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45% and 50% and the variation of irradiation time is 30, 60, 90,120, 150, 180, 210 and 240 minutes. Result of degradation analysed using UV-Vis spectrophotometer. The result showed that the greater the concentration of hydrogen peroxide added, the greater the percentage degradation of rhodamine b. The highest percentage degradation was obtained at 90,26% at the addition of hydrogen peroxide concentration 50% and the optimum time to degrade rhodamin b was 210 minutes with 86,5% degradation percentage with the addition of hydrogen peroxide.

DESAIN DAN KARAKTERISASI SEL SURYA SISTEM ELEKTRODA TEMBAGA (I) OKSIDA (Cu2O/Al) MODEL PIPA PADA LARUTAN NATRIUM SULFAT (Na2SO4) Rahma yulis lubis; Siltiwi Mandar; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 8, No 1 (2019): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Research has been conducted on "Design and Characterization of Solar Cells for Copper Oxide Electrode System (Cu2O) Model Pipes in Sodium Sulfate Solution (Na2SO4)". Solar cells (photovoltaic cells) are devices that have the ability to convert sunlight energy into electrical energy by applying the principle of photovoltaic. The principle of photovoltaic is defined as a phenomenon of the emergence of electrical voltage due to the contact of two electrodes connected to a solid or liquid system when exposed under sunlight. This study aims to determine the effect of sodium sulfate electolite solution concentration, the effect of measurement time on the generated current, determination of the concentration of solar cells, and the effect of design on electric current. In this solar cell study, the optimum concentration of sodium sulfate was 0.75 M. The measurement time produced power was at 12.00 WIB, then the stability of solar cells on the fifth day and the optimum design of solar cells was in the design 2. The maximum power obtained is 0.12325 mWatt and the electrode ability to produce electricity per area is 49.938412 mWatt / m2 with. The electrode area used is 0.00246804 m2.

THE USE OF SIGIL SOFTWARE IN THE DEVELOPMENT OF GUIDED DISCOVERY LEARNING-BASED E-MODULES FOR TEACHERS OF CHEMICAL MGMP PADANG PANJANG Budhi Oktavia; Ahmad Fauzi; Rahadian Zainul; Firmansyah Khairul Kamal
Pelita Eksakta Vol 5 No 2 (2022): Pelita Eksakta Vol. 5 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol5-iss1/180

Sigil is an e-module creation software that can be used by high school teachers to help provide various teaching materials. However, the teacher's ability to use the Sigil software is still low where the teacher is still not able to apply the teaching materials in this e-module. E-modules can be used in online learning. One of the learning models that can be used is the Guided Discovery Learning (GDL) learning model. For this reason, society service for chemistry teachers who are members of the Padang Panjang Chemistry MGMP has been carried out in the form of a GDL-based e-module development workshop using the Sigil application. After the activity, it was found that the teacher understood and was able to create a GDL-based e-module using Sigil.

Combustion and Emission Characteristics of CNG-Diesel Dual Fuel Engine with Variation of Air Fuel Ratio Dori Yuvenda; Bambang Sudarmanta; Jamaludin Jamaludin; Oki Muraza; Randi Purnama Putra; Remon Lapisa; Krismadinata Krismadinata; Rahadian Zainul; Asnil Asnil; Muji Setiyo; Sri Rizki Putri Primandari
Automotive Experiences Vol 5 No 3 (2022)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.7807

Compressed natural gas (CNG) is a popular alternative fuel because of its more environmentally friendly properties than fossil fuels , including applications in diesel engines. However, supplying too much compressed natural gas fuel causes poor engine performance and emissions due to a decrease in the air-fuel ratio on the dual-fuel engine. The addition of air using electric superchargers was done to return the air-fuel ratio to ideal conditions. Lambda value (λ) was variation under low load (1.52 to 2.71), medium load (1.18 to 2.17), and high load (0.94 to 2.17) on a CNG-diesel dual fuel engine. The addition of pure air in each load can increase combustion stability in certain lambda, which was indicated by an increase in thermal efficiency, heat release rate, and a decrease in ignition delay, combustion duration, hydrocarbon, and carbon monoxide emissions.

pengembangan E-Modul kimia berbasis Problem Based learning untuk meningkatkan literasi sains pada materi hidrolisis garam kelas XI SMA/MA Fadila Gusman; Indang Dewata; Andromeda Andromeda; Rahadian Zainul
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 5 (2022): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i5.1831

This study aims to develop an e-module based on problem-based learning to improve scientific literacy for class XI Senior High School students. The method used is the 4-D Model development method with the stages of Defining Design, Development and Dissemination. The limitation of this research is only until the third stage. This development assessment is valid and practical. The elements that are validated are content, presentation, language and graphic components. Elements of practice can be seen from the questionnaire conducted by 36 students and 3 teachers. The results of this study are e-modules that meet valid and practical criteria, so that they can be used for salt hydrolysis learning in class XI Senior High School students.

Co-Authors -, Bahrizal Adi Sofyan Ansori, Muhammad Admin Alif Afria Yolanda Agil Aditya Dinata Agustina, Niken Ahmad Fauzi Ahmed, Shafique Aini, Syamsi Alfian, Fariz R. Ali Amran Alif, Admin Alifiansyah, Mochamad Radika Tory Alifiansyah, Mochamad RT. Alizar Alyaa Farrah Dibha Amalia Putri Lubis Amaq Fadholly Ananda Putra Andini, Namira Tri Andre Juliano, Muhammad Andrean, Maifil Dwi Andromeda Andromeda Andromeda Anggraini, Dhea Anggriani Sirait, Nova Anjali, Ghoury Kharisma Anni Faridah Ansori, Arif NM. Antonius, Yulanda Ardi, Ahmad Maulana Arif Nur Muhammad Ansori Ariusni Ariusni Ariusni Elida Arli Aditya Parikesit Artha, Dwirani Puspa Asnil Asnil Asral, Suci Sukma Taruna Atmaja, Peter Y. Aulia, Halimatus S. B, Syamsul Amar Baharudin, Muhammad Daswar A. Bahrizal - Bambang Sudarmanta Bonkalo, Tatyana Budhi Oktavia Burkov, Pavel Butarbutar, Suryani Cika Dania Marca Deandra Savira Derkho, Marina Deski Beri Desy Kurniawati Devi Purnamasari Dhea Kharisma, Viol Dian, Farida Aryani Dinda Sahara Dings, Tim Godefridus Antonius Dori Yuvenda Durain Parmanoan Durry, Fara D. Dwi Finna Syolendra Edi Nasra Efran Ustia Rahmad Elfianah, Verah elida elida Elkhool, Tarek A. Ellizar ellizar Elvina Elvina Erdiwansyah Erdiwansyah Erwandri, Rianovriani Ethica, Stalis N. Ezi Anggraini Fadila Gusman Fajriah Azra Fauzan Yan Hawari Feriani, Feby Festiyed Fetty, Amelia JT. Fetty, Amelia Julia Tria Firmansyah Khairul Kamal Firmansyah, Muhammad Reffi Fitrah Mey Harmi Siregar Fitri, Ernarisa Fredy Kurniawan Goh, Khang Wen Guntur Bagus Pamungkas Hardeli Hardeli Hardeli Hary Sanjaya Hayaza, Suhaila Herdiansyah, Mochammad A. Herdiansyah, Mochammad Aqilah Hermansyah Aziz Hery Purnobasuki Hidayati, Shil ike sabaria Illyas Md. Isa Indah Permata Sari Indah Permata Sari Indang Dewata Irda Yunita Isa, Illyas Md Istiqamah, Siti Sarah Jakhmola, Vikash Jakmola, Vikash Jamaluddin, Indra P. Jamaludin Jamaludin Kadek Rachmawati Karlinda Karlinda Karlinda Karlinda Khairun Nisa Khairunnisa Khairunnisa Khalid, Ahmad Khudzairi Kharisma, Viol D. Kharisma, Viol Dhea Kolesnik, Evgeniy Kovalchuk, Dmitriy F. Krismadinata Krismadinata Lubis, Amalia Putri Lufri Lufri Ma'firah, Marla Maahury, Mirella Fonda Maksim Rebezov Maksimiuk, Nikolai Maria Kiseleva Marla Ma'firah Muhammad Andre Juliano Muhammad Haris Effendi Hasibuan Muhammad Hermawan Widyananda Muhammad Nizar Muhammad Rizki Muhammad Rusdi Muhardi, - Muji Setiyo Mulia, Melindra Murtadlo, Ahmad AA. Murtadlo, Ahmad Affan Ali Musa, Susan H. Nadezhda Kenijz Nafika Nurullita Naw, Sin W. Nizar, Umar Kalmar Novela, Riana Novera Elsi Mudia Oki Muraza Oktarina, Cindy Parikesit, Arli A. Pera Meilita Pernadi, Niza Lian Pratiwi, Intan A. Priyono, Qiara Amelia Putri Putra, Abrar Suryadi Putra, Ananda Putra, Justitia ERP. Putra, Randi Purnama Putri Fatimah Putri, Intan Anika Qonitah Fardiyah Radeni Sukma Indra Dewi Rahma yulis lubis Rahma Zila Rahmatika Putri, Sinta Rahmi, Maulidia Arsyta Ramli Ramli Rasyadan Taufiq Probojati Ratna Sari Raudhatul Hanifa Rayandra Asyhar Rebezov, Maksim Regina Tutik Padmaningrum Remon Lapisa Revi Gina Gunawan Riga Rijas, Livia Putrima Riko Romas Prayuda Rilla Gina Gunawan Risky Setiawan Risty, Chika Mei Rizaldy, Rafli Rohadatul Nadya Maurani Roza Herlina Saklani, Taru Salsabila Tri Rahmi Sari Mustika Sari, Putri Manda Sari, Yollit Permata Scherbakov, Pavel Sepiashvili, Ekaterina Seprianto Setianingsih, Primanita NM. Shmeleva, Svetlana Siltiwi Mandar Sinta Rahmatika Sinta Rahmatika Putri Skunda Diliarosta Sofia Sri Rizki Putri Primandari Sri Ulfa Sentosa Sri Wahyu Wardani Sri Wahyuningsih Sri Whayu Wardani Suci Sukma Taruna Asral Sukma Sahadewa, Sukma Sunarto Sunarto Sunarto Sunarto Susilo, Raden JK. Suyanta Suyanta Svetlana Artyukhova Syaifuddin Yana Syamsi Aini Syifa Rahma Ayunda Syukri Syukri Arief Syukri Syukri Tacharina, Martia Rani Tafonao, Leni Anggraeni Tamara, Anindya Putri Teguh Hari Sucipto, Teguh Hari Tri Haryati Trihanto Setiadi Trisna Kumala Sari Turista, Dora Dayu Rahma Ullah, Md. Emdad Umar Kalmar Nizar Urmatul Uska Akbar Veneliza, Adila Vika Erlina Vikash Jakhmola Viol Dhea Kharisma Visca Alisia Arianti Visca Alisia Arianti Yanni, Fitri Yeni, Isra Yohandri Yosephi, Valensa Yulia Matrosova Yulia Mona Liza Yuni Aulia Putri Djasli Yusniasari, Putri Antika Yusrianti, Ike

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