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All Journal SAINSMAT Indonesian Journal of Chemistry SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam Abdi Cendekia: Jurnal Pengabdian Masyarakat JIPI (Jurnal IPA dan Pembelajaran IPA) Indonesian Journal of Material Research Abdi Kimia : Jurnal Pengabdian Masyarakat
Negara, Satria Putra Jaya
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Journal : Indonesian Journal of Chemistry

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Synthesis of Chitosan Silica Membrane from Petung Bamboo (Dendrocalamus asper) Leaves and Its Application as Pb(II) Metallic Adsorbent Hasri, Hasri; Pratiwi, Diana Eka; Safitri, Isriyanti; Negara, Satria Putra Jaya
Indonesian Journal of Chemistry Vol 24, No 3 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.82065

Abstract

Membrane synthesis through a phase inversion method using chitosan and sodium silicate solutions has been conducted. This research aims to characterize the silica chitosan membrane (SCM) of petung bamboo leaves and determine the synthesized product's adsorption capacity for Pb(II) ions. The XRF characterization showed the silica content of petung bamboo leaves with a percentage of 78.03%. SEM analysis before adsorption is around 13.0 μm, and the pore diameter after adsorption is around 9.7 μm. The results of adsorption analysis of Pb(II) metal using AAS showed that the SCM variation A at an initial concentration of 10.0000 ppm Pb(II) metal adsorbed was 9.8101 ppm, and at an initial concentration of 25.0000 ppm Pb(II) metal was 22.3421 ppm. The variation B at an initial concentration of 10.0000 ppm Pb(II) metal adsorbed was 9.8870 ppm and at an initial concentration of 25.0000 ppm Pb(II) metal adsorbed was 23.5806 ppm. The variation C at an initial concentration of 10.0000 ppm Pb(II) metal adsorbed was 9.9639 ppm, and at an initial concentration of 25.0000 ppm Pb(II) metal was 24.1855 ppm. The results of this research conclude that the highest SCM adsorption power is variation C (2%:22.95%) with a percentage of 99.63%.
The Utilization of Gracilaria sp. as Raw Material for Cellulose in Cellulose Acetate-Nickel Oxide (CA-NiO) as Electrode for Energy Storage Technology Karim, Abdul; Ahmad, Ahyar; Arfah, Rugaiyah Andi; Ermawar, Riksfardini Annisa; Karim, Harningsih; Putra, Andi Erwin Eka; Putri, Suriati Eka; Negara, Satria Putra Jaya; Larekeng, Siti Halimah
Indonesian Journal of Chemistry Vol 25, No 1 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.96533

Abstract

In the modern era, electrical energy has become a significant need that drives the large consumption of fossil fuels and their environmental impacts. Supercapacitors can reduce this large consumption of natural polymers such as cellulose acetate (CA), which can be synthesized from Gracilaria sp. Composites with CA can be an environmentally friendly alternative electrode with low toxicity. The results show that the cellulose has been successfully synthesized from the algae Gracilaria sp., which was proven by FTIR spectra analysis. The results also show that supercapacitor electrodes have been successfully made where the manufactured electrodes form a composite between CA and nickel oxide (NiO), with the highest specific capacitance and specific energy values of 15.5 × 102 F/g and 13.3 × 102 Wh/kg, respectively, on the CA-NiO2 electrode, but when the NiO concentration is higher than the CA concentration the specific capacitance and specific energy decrease as shown on the CA-NiO electrode with NiO mass of 0.6 g. Thus, the materials results of this study can be applied to electric vehicles and technology that requires electricity storage in the future.
Co-Authors A. Reski Almaida Dg Macenning Abd Rahman Abdul Karim Agussalim, Hastuti Ahyar Ahmad Andi Erwin Eka Putra Arfah, Rugaiyah Andi Diana Eka Pratiwi Harningsih Karim Haryanti Putri Rizal Hasnidar Hasnidar Hasri Hasri Irfandi, Rizal Kartika, Andi Eka Marlan, Abd Rahman Marlina Ummas Genisa Mazaya, Maulida Netti Herawati Nur Afni Nur Ahmad, Nur Rahma, Muftihatu Rahmat, Muhammad Rijal Alim Riksfardini Annisa ERMAWAR Safitri, Isriyanti SITI HALIMAH LAREKENG, SITI HALIMAH Suriati Eka Putri Windarsari, Wiwin Riski