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All Journal VALENSI Bookchapter Alam Universitas Negeri Semarang
Artissiani, Maysa
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The Synthesis of Y-zeolite-modified CaCO3-ZnO Nanocomposites as an Antibacterial Agent Artissiani, Maysa; Widiarti, Nuni; Wahyuni, Sri; Widhihastuti, Endah; Ni'ma, Neli Syahida
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 1, May 2024
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i1.36246

Abstract

The ability of inorganic antibacterial agents like metal oxides and nanoscale inorganic materials to inhibit bacterial growth rates has yet to receive much research attention. In this study, CaCO3-ZnO/Y-zeolite nanocomposites were created utilizing coprecipitation and impregnation techniques with Ca(CH3COO)2, Zn(CH3COO)2 2H2O, Y-zeolite precursors. Physical and chemical characteristics of nanocomposites have been investigated using XRD, FTIR, and SEM-EDX characterizations. The agar-well diffusion method tested the substance for antibacterial activity against gram-positive and gram-negative bacteria. Nanocomposites have a crystal size range of 35.46-36.53 nm and a crystallinity of 35-37 %, according to the results of XRD analysis. The carbonate groups are visible in FTIR data at wave numbers 1433, 875, and 712 cm-1. The Zn-O absorption band was verified at wave numbers 600-400 cm-1. The Y-zeolite absorption bands at wave numbers 1012-997 cm-1 and 745-746 cm-1 were confirmed. The particle morphology is cube-shaped with irregular sizes. The EDX result showed that the composition consists of 35.92 % calcium, 1.68 % zinc, 44.81 % oxygen, and 13.79 % carbon as elements. With the addition of 2.5 % Y-zeolite, the antibacterial activity of nanocomposites showed the best results, with an inhibition zone diameter of 7.62 mm against Escherichia coli and 6.56 mm against Staphylococcus aureus bacteria.
The Synthesis of Y-zeolite-modified CaCO3-ZnO Nanocomposites as an Antibacterial Agent Artissiani, Maysa; Widiarti, Nuni; Wahyuni, Sri; Widhihastuti, Endah; Ni'ma, Neli Syahida
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 1, May 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i1.36246

Abstract

The ability of inorganic antibacterial agents like metal oxides and nanoscale inorganic materials to inhibit bacterial growth rates has yet to receive much research attention. In this study, CaCO3-ZnO/Y-zeolite nanocomposites were created utilizing coprecipitation and impregnation techniques with Ca(CH3COO)2, Zn(CH3COO)2 2H2O, Y-zeolite precursors. Physical and chemical characteristics of nanocomposites have been investigated using XRD, FTIR, and SEM-EDX characterizations. The agar-well diffusion method tested the substance for antibacterial activity against gram-positive and gram-negative bacteria. Nanocomposites have a crystal size range of 35.46-36.53 nm and a crystallinity of 35-37 %, according to the results of XRD analysis. The carbonate groups are visible in FTIR data at wave numbers 1433, 875, and 712 cm-1. The Zn-O absorption band was verified at wave numbers 600-400 cm-1. The Y-zeolite absorption bands at wave numbers 1012-997 cm-1 and 745-746 cm-1 were confirmed. The particle morphology is cube-shaped with irregular sizes. The EDX result showed that the composition consists of 35.92 % calcium, 1.68 % zinc, 44.81 % oxygen, and 13.79 % carbon as elements. With the addition of 2.5 % Y-zeolite, the antibacterial activity of nanocomposites showed the best results, with an inhibition zone diameter of 7.62 mm against Escherichia coli and 6.56 mm against Staphylococcus aureus bacteria.
Potensi Aktivitas Antibakteri Precipitated Calcium Carbonate (PCC) dari Batu Kapur Termodifikasi Surfaktan Widiarti, Nuni; Artissiani, Maysa; Wahyuni, Sri; Widhiastuti, Endah; Ni’ma, Neli Syahida
Bookchapter Alam Universitas Negeri Semarang Vol. 5 (2025)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ka.v5i1`.596

Abstract

Penggunaan PCC sebagai agen antibakteri menawarkan peluang besar karena termasuk bahan yang kompatibel, mudah terurai secara hayati, dan ukuran partikel yang kecil. Sintesis PCC yang dikombinasikan dengan surfaktan diharapkan dapat menghasilkan PCC dengan ukuran nanokristal dan mempunyai aktivitas antibakteri yang baik terhadap bakteri Escherichia coli. PCC termodifikasi surfaktan PEG, sukrosa dan lerak disintesis menggunakan metode hidrotermal dan dikarakterisasi menggunakan FTIR, XRD, PSA, SEM-EDX, serta duji aktivitas antibakteri dengan metode sumuran terhadap bakteri Escherichia coli. Hasil FTIR menunjukkan adanya gugus karbonat dari PCC pada bilangan gelombang 875 dan 713 cm-1. Krisnalinitas PCC termodifikasi surfaktan kisaran 34-37% dengan ukuran kristal antara 400-1800 nm. PCC yang terbentuk berupa fasa calcite dengan struktur rhombohedral. Hasil uji aktivitas antibakteri menunjukkan bahwa PCC-sukrosa memiliki aktivitas antibakteri terbaik yaitu 11,91 mm seiring dengan semakin kecil kristalinitas dan ukuran kristal yag dihasilkan.
Co-Authors Ni'ma, Neli Syahida Ni’ma, Neli Syahida Nuni Widiarti Sri Wahyuni Widhiastuti, Endah Widhihastuti, Endah