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All Journal Jurnal Basataka (JBT) Bulletin of Chemical Reaction Engineering & Catalysis
Utari, Tika Dwi
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Chemical Engineering, Chemistry & Bioengineering Chemistry Education Languange, Linguistic, Communication & Media

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Investigating the Structure of Defects in Heterometallic Zeolitic Imidazolate Frameworks ZIF-8(Zn/Cd) and Its Interaction with CO2 Using First-Principle Calculations Pambudi, Fajar Inggit; Sutarno, Sutarno; Hatmanto, Adhi Dwi; Patmawati, Mita; Utari, Tika Dwi
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 2 Year 2024 (August 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20136

Abstract

Inducing defect in metal-organic frameworks (MOFs) is one of the strategies to modify the structure and properties of this functional material. Defect may occur in a pristine MOF due to missing organic linkers, metal centres and/or other structural behaviours. In this study, the structure of defects in multicomponent MOFs especially heterometallic MOFs of zeolitic imidazolate framework (ZIF-8(Zn/Cd)) was examined to unveil the possible preference defect formation due to missing 2-methylimidazolate (MeIm) and metal centres of Cd2+ and Zn2+. Assuming defect formation due to the reaction between ZIF-8(Zn/Cd) and water, MeIm linker removal is energetically lower than removing metal centres of either Cd2+ or Zn2+. But, the MeIm linker is easier to be removed when it is connected to Cd2+ (Cd-MeIm-Cd) than when it is connected to Zn2+ (Zn-MeIm-Zn). Defect in ZIF-8(Zn/Cd) affects the band gap energy to give slightly lower value than it in pristine ZIF-8(Zn/Cd). Non-covalent interaction (NCI) and interaction region indicator (IRI) analyses were also performed to indicate possible intermolecular forces such as van der Waals and attractive forces present in non-defective and defective ZIF-8(Zn/Cd). The presence of defects in mixed-metal ZIF-8(Zn/Cd) was also tested for its potential use on CO2 adsorption. The interaction energy of CO2 inside defective ZIF-8(Zn/Cd) indicates an exothermic behaviour where CO2 molecule has a preference to be adsorbed inside the framework. This is especially when the capping agents at the defective ZIF-8(Zn/Cd) sites are removed to give open metal sites. This study provides insight how defects in multicomponent MOFs might presence affecting the structural and properties changes. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
IMPLEMENTASI MANAJEMEN BERBASIS ARTIFICIAL INTELLIGENCE DALAM PENINGKATAN EFEKTIVITAS SISTEM EVALUASI PEMBELAJARAN DI SEKOLAH MENENGAH Marjuan, Marjuan; Ramli, Akhmad; Bahrani, Bahrani; Utari, Tika Dwi
Jurnal Basataka (JBT) Vol. 8 No. 2 (2025): Desember 2025
Publisher : Prodi Pendidikan Bahasa dan Sastra Indonesia, Universitas Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36277/basataka.v8i2.1249

Abstract

Penelitian ini bertujuan untuk menganalisis penerapan manajemen berbasis Artificial Intelligence (AI) dalam meningkatkan efektivitas sistem evaluasi pembelajaran di sekolah menengah. Menggunakan pendekatan library research, penelitian ini menelaah berbagai literatur terkait konsep manajemen pendidikan, prinsip manajemen berbasis AI, serta implementasi AI dalam evaluasi pembelajaran. Hasil penelitian menunjukkan bahwa AI berperan signifikan dalam otomatisasi proses penilaian, analisis data belajar siswa secara real-time, dan penyediaan umpan balik yang cepat serta akurat. Selain itu, AI mendukung personalisasi evaluasi melalui instrumen penilaian adaptif yang mampu menyesuaikan tingkat kesulitan sesuai kemampuan siswa. Namun, penerapan AI menghadapi tantangan seperti kurangnya kompetensi digital guru, keterbatasan infrastruktur teknologi, serta isu privasi dan keamanan data siswa. Penelitian ini menyimpulkan bahwa integrasi AI dalam manajemen evaluasi pembelajaran memberikan peluang besar untuk meningkatkan kualitas pembelajaran, sepanjang sekolah mampu mengatasi hambatan implementatif yang menyertainya.
Co-Authors Bahrani Hatmanto, Adhi Dwi Marjuan, Marjuan Pambudi, Fajar Inggit Patmawati, Mita Ramli, Akhmad Sutarno Sutarno