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All Journal Acta Chimica Asiana Molekul: Jurnal Ilmiah Kimia
Emmy Yuanita
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

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Highly photocatalytic performance of TiO2 nanowires in the conversion of benzaldehydes to benzoic acid Sudirman Sudirman; Lalu Dimas Pratama Atmaja; Ari Jamhari Pratama; Emmy Yuanita; Ni Komang Tri Dharmayani; Maria Ulfa; Romel Hidayat
Acta Chimica Asiana Vol. 6 No. 2 (2023)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v6i2.160

Abstract

The synthesis of environmentally friendly-based chemicals such as solvent-free continues to be developed. A critical precursor in chemical synthesis is benzoic acid. This research developed a synthesis method by utilizing TiO2 nanomaterials with different morphologies as photocatalysts, namely nanoparticles (NPs) and nanowires (NWs). Titanium (IV) oxide with nanowires morphology was synthesized by hydrothermal method under alkaline conditions. SEM, XRD, and FT-IR images confirmed the morphologies of TiO2 NPs and TiO2 NWs. Photocatalytic performance in converting benzaldehyde to benzoic acid showed a significant difference of up to 38% using TiO2 NPs and 94% using TiO2 NWs.
Molecular Docking of Xanthone Derivatives as Therapeutic Agent for Covid-19 Emmy Yuanita; Sudirman Sudirman; Ni Komang Tri Dharmayani; Maria Ulfa; Saprizal Hadisaputra; Jufrizal Syahri
Molekul Vol 17 No 1 (2022)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2022.17.1.5600

Abstract

Covid-19 has caused more than 14 million confirmed cases and more than 6 hundred deaths as of 21 July 2020 globally. However, there is no approved drug to treat the disease. Xanthone is a potential therapeutic option for the virus that have been tested using molecular docking. There were 12 of xanthone compounds and its derivatives which have been docked against two protein crystals, 2GX4.pdb and 6FV1.pdb, which obtained two potential compounds of hydroxyxanthone derivatives with sulfonate and chloro substitution. These compounds are potentially developed into one of the agents for the treatment of infection COVID-19 disease. Based on energy data and interactions with amino acid residues when compared with its own native ligands, namely NOL and E8E, respectively. Energy docking and energy docking interactions are equal to - 43.3057and - 45.5805 Kcal/mol respectively, during interactions with amino acid residues in the form of Gly 142, His 163, Cys144, Glu166, Gln164 and His 41. Based on these two data, it can be concluded that trihydroxyxanthone compounds 4 and 8 with chloro and sulfonate substitution are very potential to be developed as drug agents for Covid-19 disease therapy through protease inhibition.
Co-Authors Ari Jamhari Pratama Lalu Dimas Pratama Atmaja Maria Ulfa Romel Hidayat Saprizal Hadisaputra Sudirman Sudirman Sudirman Sudirman Syahri, Jufrizal Tri Dharmayani, Ni Komang