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Journal : Bulletin of Chemical Reaction Engineering

Preliminary Synthesis of Calcium Silicates using Oil Palm Leaves and Eggshells. Salprima Yudha S; Aswin Falahudin; Noor Haida Mohd Kaus; Sirikanjana Thongmee; Saiqa Ikram; Asdim Asdim
Bulletin of Chemical Reaction Engineering & Catalysis 2020: BCREC Volume 15 Issue 2 Year 2020 (August 2020)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.15.2.7591.561-567

Abstract

A new synthetic procedure is described for the synthesis of calcium silicate derivatives, using natural resources such as eggshell (ES) for calcium and oil palm leaves (OPL) for silica, which do not require prepurification. The reaction is performed by directly converting two weight ratio of the precursors, ES:3OPL and ES:6OPL, to dried-powder form by heat treatment at 900 °C for two hours. The results demonstrate that the concentration of the precursors has an effect on the morphology and crystallinity of the calcium silicate derivatives, mainly Ca2SiO4 and CaSiO3. X-ray diffraction results reveal that the reaction product obtained using a 1:3 ratio is quite pure, and mainly consisted of calcium silicate in the form of Ca2SiO4. The CaSiO3 was also identified in ES:6OPL, together with a small amount of excess non-reacted crystalline silica. Furthermore, a scanning electron microscopy analysis shows that both reaction products have a coarse surface. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Reduction of 4-nitrophenol Mediated by Silver Nanoparticles Synthesized using Aqueous Leaf Extract of Peronema canescens Salprima Yudha S; Aswin Falahudin; Risky Hadi Wibowo; John Hendri; Dennie Oktrin Wicaksono
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 2 Year 2021 (June 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.2.10426.253-259

Abstract

In this study, we developed an alternative of 4-nitrophenol reduction mediated by silver nanoparticles (AgNPs) which was synthesized using aqueous extract of the Peronema canescens leaf through an eco-friendly approach. The reducing 4-nitrophenol to 4-aminophenol mediated by AgNPS in the presence of sodium borohydride as a hydrogen source proceeded rapidly at room temperature without any additional treatments. The AgNPS synthesis was simple and was carried out under mild conditions. Ultraviolet–visible spectroscopy was performed to examine the properties of the obtained AgNPs, which displayed an absorption peak at 431 nm. A transmission electron microscopy analysis revealed that the AgNPs were spherical in shape and had an average particle size of 19 nm as determined by particle size analysis. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Co-Authors Afra Wafiqah Azhar Agus Martono H. Putranto Alvin Reagen, Muhamad Anisa Ulya Darajat Annisa Ramadhani Aritonang, Anthoni Batahan Asdim Asdim Askhan, Jimmy Aswin Falahudin Aswin Falahudin Aswin Falahudin Aswin Falahudin Aswin Falahudin Aswin Falahudin Aswin Falahudin Avidlyandi, Avidlyandi Azhar, Afra Wafiqah Bambang Trihadi Buistu Arba’a Nuyuh Putri Charles Banon Demi Dama Yanti Dennie Oktrin Wicaksono Dominica, Dwi Doni Notriawan Dwita Oktiarni Efendi, Pahran Eka Angasa Eka Angasa Etriyanto Arman Falahudin, Aswin Fatan Umbara Febriansyah, Rahmaga Herlina Herlina Herlina Herlina I Putu Mahendra Ika Diana Evita Insin, Numpon Irfan Gustian Irfan Gustian Irfan Gustian Irfan Gustian John Hendri Kazi, Mohsin Khafit Wiradimafan Liana Wahyuni Liesaiani Daefisal, Octakireina M. Rafi Mardlia, Zulfikri Achid Mifta Violina Aniza Morina Adfa Morina Adfa Muhamad Alvin Reagen Munifilia Ekasari Nasution, Riski Padilah Nazarudin Nazarudin Nazarudin Nesbah Nesbah Nesbah, Nesbah Noor Haida Mohd Kaus Notriawan, Doni Nurhasana, Devi Octakireina Liesaini Daefisal Oman Zuas Oman Zuas Perdani, Meka Saima Putri, Yona Putri, Yona Harianti Rahmawati, Reza Rais Akbar Syahputra Reagen, Muhamad Alvin Reza Pertiwi Reza Pertiwi Reza Pertiwi Riski Padilah Nasution Risky Hadi Wibowo Risky Hadi Wibowo Saiqa Ikram Saiqa Ikram Setyo Eko Nugroho Nugroho Sirikanjana Thongmee Sri Ningsih Suli Anggria Murni Supriati, Rochmah Suripto D Yuwono Swadexi Istiqphara Swadexi Istiqphara Swadexi Istiqphara Swadexi Istiqphara, Swadexi Syalfinaf Manaf Teja Dwi Sutanto Triawan, Deni Agus Umi K Yaumidin Wibowo, Risky Hadi Wuri Prameswari Yaumidin, Umi K Yuwono, Suripto D