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Journal : Science and Technology Indonesia

Bismuth Silicate/Silica-Titania Synthesis from In Situ Decomposition of Oil Palm Leaves as Silica Source Salprima Yudha S; Morina Adfa; Swadexi Istiqphara; Muhamad Alvin Reagen
Science and Technology Indonesia Vol. 8 No. 3 (2023): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2023.8.3.397-402

Abstract

In this work, bismuth silicate-titania has been synthesized in two stages by utilizing bismuth oxynitrate as an elemental source of bismuth, oil palm leaves (OPL) as a source of silica and titanium tetraisopropoxide (TTIP) as source of titania (TiO2). In the first stage,bismuth silicate/silica (Bi4Si3O12/SiO2) was formed, which occurs due to the in-situ decomposition of palm leaves and reacts directly with the bismuth precursor at high temperatures (900oC). The reaction could possibly occur through a solid-state reaction mechanism between bismuth oxide and silica or through a more complex mechanism within the reaction mixture. The resulting product then reacts with TTIP, which is added and heated at the same temperature to form Bi4Si3O12/SiO2-TiO2 (bismuth silicate/silica-titania). Characterization of the as-prepared product using X-ray diffraction showed the dominance of bismuth silicate and small amount of titania (TiO2). As a result, TiO2 could not be detected in the diffractogram. Nevertheless, an analysis using energy-dispersive X-rays showed the presence of titanium elements in the resulting composite. The results of this study can be used to develop ternary metal oxides based on natural resources and agricultural wastes, such as oil palm leaves.
Oil Palm Leaves as an In-situ Bio-silica Source in Sustainable Synthesis of V2O5-SiO2 Yudha S., Salprima; Adfa, Morina; Wibowo, Risky Hadi; Reagen, Muhamad Alvin
Science and Technology Indonesia Vol. 10 No. 4 (2025): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.4.1148-1155

Abstract

Using ammonium vanadate and natural silica from oil palm leaves in situ at 900oC is a sustainable synthesis method for producing V2O5-SiO2 mixed oxides in the form of a brownish powder. Therefore, this study aims to investigate a more environmentally friendly alternative to synthesizing V2O5-SiO2 using oil palm leaves, a by-product from oil palm farming. The XRD analysis of the reaction products showed specific V2O5 peaks and broadened peaks, indicating the presence of amorphous silica. The Fourier transform infrared (FTIR) analysis, which revealed the presence of Si-O-Si and Si-O-V functional groups, also supported the characteristic assessment. In addition, X-ray fluorescence (XRF) analysis showed that V2O5 (46.70 mass%) and SiO2 (52.60 mass%) were present, along with small amounts of other possible metal oxides, such as P2O5, K2O, CaO, Fe2O3, Al2O3, and PdO.
Co-Authors A.A. Ketut Agung Cahyawan W Afif, Muhammad adli Agus Martono Agus Martono H. Putranto Alvin Reagen, Muhammad Andini, Vicka Arif Juliari Kusnanda Aswanda Aswin Falahudin Aswin Falahudin Aswin Falahudin Aswin Falahudin Avidlyandi, Avidlyandi Azizah Khusnul Cahlia, Uci Charles Banon Della Faronica Della Indah Medani Deni Agus Triawan Devi Nurhasana Diana Andari Dina Erliana Dwita Oktiarni Eka Angasa Eka Angasa Elsi Silvia Endarwati Wiwik Endarwati Evi Maryanti Evi Maryanti Fahmi, Riziq Ilham Nur Falahudin, Aswin Febriansyah, Rahmaga Fitriani, Dyah Ghufira Ghufira Harlianto, Budi Helfi Eka Saputra Hendri Bustamam Herlina Herlina Herlina Herlina Herlita Widiyanti Hidayah, Thoriqul Indah Medani, Della Insin, Numpon Irfan Gustian Irfan Gustian Irfan Gustian Irfan Gustian Irfan Gustian Irmanida Batubara Juliari Kusnanda, Arif Khafit Wiradimafan Khafit Wirdimafan Khairani, Nurliza Khusnul Azizah Kurnia Farah Andina Liana Wahyuni Lisna Hamni M. Rafi Martono H.P, Agus Meyola, Fenti Mohamad Rafi Mudyanto, Andre Muhamad Alvin Reagen Muhammad Alvin Reagen Munifilia Ekasari Munifilia Ekasari Nesbah Nesbah, Nesbah Novrianto Tarigan Nurhasana, Devi Nurwidiyani, Ria Pasaribu, Cahaya Perdani, Meka Saima Prastya, M. Eka Puspasari, Jesi Rahmaga Febriansyah Reagen, Muhamad Alvin Reza Pertiwi Reza Wahyuni Ria Nurwidiyani Risky Hadi Wibowo Risky Hadi Wibowo Rochmah Supriati Rothman, Dita Delia Sal Prima Yudha S Sal Prima Yudha S SALPRIMA YUDHA S Salprima Yudha S. Shari Winda Silvia, Elsi Sipriyadi Sri Wahyu Kurnia Putri Suci Sukma Taruna Asral Supriati, Rochmah Suryadi Jaya Swadexi Istiqphara Swadexi Istiqphara Swadexi Istiqphara, Swadexi Teja Dwi Sutanto Thoriqul Hidayah Triawan Deni Agus Triawan, Deni Agus Wafa Syahidah Wahyuni, Reza Welly Darwis Wibowo Risky Hadi Wibowo, Risky Hadi Winda Shari Wulan Aprilia Syafitri Yudha S Yudha S