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All Journal Jurnal Pendidikan Kimia Universitas Riau Jurnal Chemurgy Journal of Scientech Research and Development
Chairul Islam, Sultan Nazmi
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences Other

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Analysis of the Potential Use of Graphene Oxide Nanoparticles in the Field of Materials: Bibliometric Analysis Chairul Islam, Sultan Nazmi
Journal of Scientech Research and Development Vol 5 No 2 (2023): JSRD, December 2023
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v5i2.205

Abstract

This research was carried out to present bibliometric analysis which can be useful for mapping ongoing research topics and trends, especially in the topic of the use of graphene oxide in the materials field, so that it is hoped that it can help further research that will be carried out. The research method used is descriptive qualitative with bibliometric analysis using VOSviewer to visualize related research terms. Data collection was carried out using the publish and publish application using the keywords graphene oxide, nanoparticles, and materials with a time span of 2017 to 2023. The research results showed that there were fluctuations in the number of research conducted each year on the topic of graphene oxide.
PENGARUH SENYAWA KOMPLEKS KOORDINASI TRISBIPIRIDINA KROM(III), Cr(bpy)3, DALAM FOTOKIMIA DAN SPIN CROSSOVER MENGGUNAKAN METODE DFT DAN HF Maulana, Andre Safrie; Andang Paryawan, Baariq Fauzaan; Chairul Islam, Sultan Nazmi
Jurnal Pendidikan Kimia Universitas Riau Vol 9, No 1 (2024)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan (FKIP), Universitas Riau (UNRI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/jpk-unri.v9i1.7891

Abstract

Penelitian ini bertujuan untuk mengetahui sifat kimia dari senyawa kompleks koordinasi trisbipiridina krom (III) menggunakan metode DFT dan HF. Metode yang digunakan dalam perhitungan komputasi adalah metode Hartree Fock. Hartree Fock merupakan suatu metode hampiran untuk menentukan fungsi gelombang dan energi dari sistem benda-banyak kuantum dalam keadaan stasioner. Selain itu terdapat metode Density Functional Theory (DFT). Hasil pengamatan perubahan nilai momen magnet pada berbagai variasi suhu ditampilkan sebagai kurva transisi spin, yang menggambarkan pola transisi. Besarnya nilai momen magnetik dapat dikonversi sebagai fraksi keadaan spin tinggi (γHS).
Design of Reactor for The Production of Sodium Thiosulfate (Na2S2O3) Crystal Chairul Islam, Sultan Nazmi
Jurnal Chemurgy Vol 8, No 2 (2024): Jurnal Chemurgy-Desember 2024
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v8i2.13815

Abstract

In this research, the design and analysis of a batch reactor for the production of Sodium Thiosulfate crystal was carried out. This research was carried out with computational analysis and calculations of the reactor, stirrer and mass balance using the Microsoft Excel application.  It is hoped that the manufacture of Sodium Thiosulfate can be scaled up on a factory scale so that a place is needed to react the raw materials from which the Sodium Thiosulfate is made. The specifications for sodium thiosulfate production at an industrial scale (1000 times larger than the lab scale) require a volume of 186.1300 ft3, a height of 2.8147 ft, and one stirrer with a power of 1800 Hp, based on calculations from the batch reactor and stirrer. The calculations were performed using Microsoft Excel without considering effectiveness factors. The calculation results indicate that the reactor's design and performance analysis are applicable.
Co-Authors Andang Paryawan, Baariq Fauzaan Maulana, Andre Safrie