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All Journal Jurnal Bahan Alam Terbarukan PROSIDING SEMINAR KIMIA JURNAL ATOMIK
Hiyahara, Irfan Ashari
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology

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Journal : JURNAL ATOMIK

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Mini Review: Citrus sinensis Sebagai Bioreduktor Dalam Green Synthesis Nanopartikel Hiyahara, Irfan Ashari; Hindryawati, Noor; Syaima, Husna; Akbar, Muhammad Marion; Duratulhikmah, Nur Fadhilah; Putra, Narundana Perdana; Wulandari, Siti Aprilia; Larasati, Zarra Udyani; Rahayuningsih, Rahayuningsih; Indriani, Isah Waliah
JURNAL ATOMIK Vol 8 No 1 (2023)
Publisher : Jurusan Kimia FMIPA UNMUL

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Green synthesis is an eco-friendly approach that provides a viable alternative to traditional physical and chemical methods for the production of nanoparticles. This technique employs non-toxic and safe materials, such as plants, microorganisms, algae, bacteria, yeast, and fungi, to generate stable and less toxic nanoparticles. Citrus sinensis, commonly known as sweet orange, is a plant that contains various active compounds. These bioactive compounds can be extracted and used as bioreductants in green synthesis of nanoparticles. This mini review aimed to provide an overview of the current state of research on the utilization of Citrus sinensis as a bioreductant in the production of nanoparticles. A systematic search strategy was employed to identify research articles that met the criteria of discussing green synthesis of nanoparticles with Citrus sinensis as a bioreductant. The nanoparticles produced using Citrus sinensis extract can be either metal nanoparticles or metal oxide nanoparticles. The review highlights the distribution of nanoparticles produced with Citrus sinensis extract, their applications, and the extraction process of Citrus sinensis commonly employed in green synthesis of nanoparticles. Hopefully this review serves as a useful reference for researchers and practitioners who are interested in employing the Citrus sinensis plant as a bioreductant in the green synthesis of nanoparticles.
SINTESIS ASETIL ASKORBAT MELALUI ASETILASI TANPA PELARUT DAN KATALIS Nurhidayah, Annisa; Daniel, Daniel; Hiyahara, Irfan Ashari
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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ABSTRACT The preparation of acetyl ascorbate by acetylation without solvent and catalyst has been carried out. The preparation of acetyl ascorbate is carried out by reacting ascorbic acid with anhydrous acetic acid using a 1:1 mole ratio without solvent and catalyst. The acetylation reaction was carried out using the reflux method at 700C for 5 hours. The result of acetyl ascorbate acetylation is a yellow powder with a yield percentage of 71.8182%. The functional groups of the synthesized compound in the form of acetyl ascorbate were analyzed using a FT-IR spectrophotometer. The FT-IR analysis results show the functional groups OH, CH sp3, C=C, C=O ester and C-O-C ester. Based on these results it can be seen that acetyl ascorbate has been formed.
Pemanfaatan Cangkang Telur Ayam sebagai Sumber CaO: Studi Karakterisasi menggunakan Fourier Transform Infrared Spectroscopy (FTIR Zahra, Marinda Afifatu; Hiyahara, Irfan Ashari; Syaima, Husna
JURNAL ATOMIK Vol 10 No 2 (2025)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v10i2.1550

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This research aims to utilize chicken eggshell waste as a raw material for producing calcium oxide (CaO) through a simple calcination method. Eggshells, which are mostly composed of calcium carbonate (CaCO₃), were calcined at 900°C for one hour. The resulting material was then characterized using Fourier Transform Infrared Spectroscopy (FTIR) to identify the presence of specific functional groups. The FTIR results showed a strong absorption peak at 602.14 cm⁻¹, indicating the presence of Ca–O bonds, which confirms the formation of CaO. However, additional peaks associated with hydroxyl (–OH) and carbonate (CO₃²⁻) groups were also detected, suggesting that some residual Ca(OH)₂ and CaCO₃ remained in the sample. This indicates that the calcination process was not fully complete, and further optimization may be necessary to improve the purity of the CaO obtained.
Co-Authors Ahmad, Atika Aulia Akbar, Muhammad Marion Arief, M. Syaiful Bergita, Angela Daniel Daniel Duratulhikmah, Nur Fadhilah Gaanty Pragas Maniam, Gaanty Pragas Hasriani Hasriani, Hasriani Husna Syaima Indriani, Isah Waliah Larasati, Zarra Udyani Nanang Tri Widodo Noor Hindryawati, Noor Novianti, Rina Lia Nurhidayah, Annisa Putra, Narundana Perdana Rahayuningsih Rahayuningsih, Rahayuningsih Rahman, Kamaulana Adi Saibun Sitorus Salsabila, Aidilia Putri Sapira, Putri Abelia Saputra, Herdian Sari, Nadia Fellinda Wanda Solly Aryza Teguh Wirawan, Teguh Wulandari, Siti Aprilia Zahra, Marinda Afifatu