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All Journal The Journal of Pure and Applied Chemistry Research IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Indonesian Journal of Chemical Science Jurnal Penelitian Sains Chimica et Natura Acta Indonesian Journal of Chemistry JSFK (Jurnal Sains Farmasi & Klinis) Jurnal Kreativitas PKM Makara Journal of Technology Ahsana: Jurnal Penelitian dan Pengabdian kepada Masyarakat
Nurlisa Hidayati
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Kampus UNSRI Indralaya, Jl. Palembang Prabumulih Km 32 Ogan Ilir 30662, South Sumatera
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Synthesis and Characterization of Terephthalic Acid MOF as a Catalyst for Biodiesel Production from Waste Cooking Oil Haryana, Rista; Hidayati, Nurlisa; Hasanudin, Hasanudin
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 3 (2025): October 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Utilization of waste cooking oil as a raw material for biodiesel production is an effective solution to reduce environmental pollution and produce renewable energy. The high free fatty acid content in waste cooking oil is a major problem in the industry, so it requires an effective catalyst in the biodiesel production process. Zn terephthalate MOF has a large surface area, porous structure, and good thermal stability, making it very effective as a heterogeneous catalyst for the biodiesel esterification process. This study aims to synthesize and characterize Zn terephthalate MOF using a hydrothermal method with a Teflon autoclave, and evaluate its effectiveness as a catalyst. The analysis was carried out by testing the acidity of the Zn terephthalate MOF catalyst characterized by XRD, TGA, PSA, and the ability to convert waste cooking oil into biodiesel. The results showed that the obtained MOF-5 had an acidity of 4.33 mmol/g, the XRD results showed a 2 theta angle and the catalyst intensity was the same as JCPDS no. 96-432-6738. TGA results showed that the Zn terephthalate catalyst had thermal stability up to 300OC, and PSA results showed particles distributed at 8428.62 nm. This proves that the Zn terephthalate MOF catalyst can reduce the FFA value of waste cooking oil and convert it into biodiesel with a conversion rate of 94.18%, and the catalyst can be reused up to five times with relatively stable performance
Synthesis and Characterization of Schiff Base Compound Benzaldehyde- 2,4-Dinitrophenylhydrazone as a Carbonate Anion Sensor Musyrifah, Arina; Hidayati, Nurlisa; Yuliasari, Nova
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 3 (2025): October 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v10.i3.198

Abstract

Benzaldehyde-2,4-dinitrophenylhydrazone was synthesized via  the condensation of benzaldehyde with 2,4- dinitrophenylhydrazine. The product was analyzed using UV–Vis and FT-IR spectroscopy, and its solvatochromic properties were investigated in DMF, acetone, and ethanol. Its application as a carbonate anion sensor was evaluated under optimized conditions. Schiff base formed orange crystalline solids with a 91.86% yield. UV-Vis spectra showed maximum absorption wavelength at 260 nm (π-π*) and 390 nm (n-π*). FT-IR analysis proves the presence of azomethine band (HC=N) at 1618 cm-1 and the shift of the N-H stretching band region from 3325 to 3284 cm-1. Among the solvents studied, DMF exhibited the highest solubility and color stability, acetone showed the greatest absorbance but poor stability, and ethanol showed low solubility with the formation of a precipitate. Functioning as a carbonate anion sensor, the Schiff base exhibited a noticeable color change from yellow to red, along with a bathochromic shift from 390 nm to 495 nm (π→π*), reaching its maximum response after 30 minutes.
Interaksi Kimia Antara Larutan Boraks dengan Ekstrak Cair Kulit Buah Naga Merah (Hylocereus Polyrhizus): Pengembangan Ilmu Kimia Terhadap Siswa SMA Islam Terpadu Bina Ilmi Kota Palembang Sumatera Selatan Fatoni, Ahmad; Hilma, Hilma; Rasyad, Ade Arinia; Imanda, Yunita Listiani; Hidayati, Nurlisa
Jurnal Kreativitas Pengabdian Kepada Masyarakat (PKM) Vol 7, No 5 (2024): Volume 7 No 5 2024
Publisher : Universitas Malahayati Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jkpm.v7i5.14284

Abstract

ABSTRAK Kulit buah naga merah dapat dimanfaatkan sebagai media untuk interaksi secara kimia dengan larutan boraks secara sederhana. Kegiatan ini mempunyai tujuan yaitu demonstrasi tentang interaksi kimia antara antosianin di dalam kulit buah naga merah dengan larutan boraks dan dilanjutkan dengan diskusi dengan para siswa SMA Islam Terpadu Bina Ilmi. Pembuatan ekstrak cair dari kulit buah naga merah yaitu dengan metode sederhana dan mudah. Proses ini adalah mereaksikan kulit buah naga merah yang telah dihaluskan dengan aquades. Ekstrak cair kulit buah naga merah selanjutnya direaksikan dengan larutan boraks. Hasil dari demonstrasi yang telah dilakukan dinyatakan bahwa ekstrak cair kulit buah naga merah dapat dimanfaatkan sebagai medium untuk pengujian secara kualitatif senyawa boraks. Warna ekstrak cair kulit buah naga merah berubah menjadi warna ungu setelah diinteraksikan dengan larutan boraks. Kata Kunci: Ekstrak Cair, Boraks, Demonstrasi, Diskusi  ABSTRACT Peels from red dragon fruits can be utilized as a media for straightforward chemical reactions with solutions of borax. This activity had the aim of demonstrating the chemical interaction between anthocyanin in red dragon fruit peel and borax solution and was followed by a discussion with the students of Bina Ilmi Integrated Islamic High School. Making a liquid extract of red dragon fruit peel is done using a simple and easy method. This process involves reacting the mashed red dragon fruit peel with distilled water. The liquid extract of red dragon fruit peel is then reacted with a borax solution. The results of the demonstration that had been carried out stated that the liquid red dragon fruit extract of peel could be used as a medium for qualitative testing of borax compounds. The color of the liquid extract of red dragon fruit peel changes to purple after interacting with the borax solution.  Keywords: Liquid Extract, Borax, Demonstration, Discussion
Biosourced Reduced Graphene Oxide and Its Application for Methylene Blue Adsorption Rachmat, Addy; Ahadito, Bijak Riyandi; Suryani, Sri; Meiliza, Cici; Hidayati, Nurlisa; Julinar, Julinar; Said, Muhammad
The Journal of Pure and Applied Chemistry Research Vol. 14 No. 3 (2025): Edition September-December 2025
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2025.014.03.7926

Abstract

Graphene oxide and reduced graphene oxide have been widely studied as a biomass-sourced alternative to graphene for their various capabilities, e.g. as adsorbent. This publication reports the preparation of graphite (g), graphene oxide (GO), and reduced graphene oxide (rGO) from coconut shell (1) and sugarcane bagasse (2) using matoa leaves extract as reducing agent, characterized by XRD, FT-IR, and Raman spectroscopy. The X-ray diffractogram showed 2θ peaks between 22.8°–23.8° for g1, GO1, and rGO1, and between 23.6°–25.8° for g2, GO2, and rGO2. FT-IR spectra of both sets of GO and rGO showed common peaks of O–H (~3400 cm–1), C–H (~2900 cm–1), and C–OH (~1600 cm–1), while also some noticeable differences between the sets. Raman spectra of both rGO showed D peak (~1400 cm–1), G peak (~1700 cm–1), and weak 2D peaks (2700–3300 cm–1) with ID/IG of 0.93 and 0.91 for rGO1 and rGO2, respectively. The obtained g, GO, and rGO were used as adsorbent for methylene blue dye. The adsorption study involved variation in dye concentration, contact time, and amount of adsorbent. It was found that rGO performs best as adsorbent compared to GO and g, with maximum adsorption capacity of 22.308 μg/mg (rGO1) and 47.533 μg/mg (rGO2). Adsorbents prepared from sugarcane bagasse were found to perform better due to its easiness of carbonization compared to coconut shell.
Biosynthesis, Characterization of Curcumin-Capped Zno-Cuo and Chitosan-Curcumin-Capped Zno-Cuo based Nanomaterial as Antibacterial Agent of Escherichia coli Fatoni, Ahmad; Umli, Afnita Fatmawati; Sriwijaya, Reza Agung; Hilma, Hilma; Hidayati, Nurlisa
Chimica et Natura Acta Vol 13, No 3 (2025)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v13.n3.62946

Abstract

The biofabrication of the chitosan-curcumin-capped ZnO-CuO and curcumin-capped ZnO-CuO nanoparticles, as well as their ability to combat Escherichia coli bacteria, were the focus of this study. Fourier-Transform Infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM) were used to examine the chitosan-curcumin-capped ZnO-CuO and curcumin-capped ZnO-CuO nanoparticles, respectively. Both were evaluated using the agar diffusion method as antibacterials against Escherichia coli. Results of analysis with FTIR, between 500 and 700 cm⁻¹, the functional group of Cu-O or Zn-O was seen at its highest point. The functional group of Cu-O and Zn-O in curcumin-capped ZnO-CuO was detected at wavenumber of 621 cm⁻¹ and 507 cm⁻¹, respectively. In chitosan-curcumin-capped ZnO-CuO, the wave numbers of the Cu-O and Zn-O groups were observed at 619 and 653 cm-1 respectively.  According to XRD analysis results, the chitosan-curcumin-capped ZnO-CuO and curcumin-capped ZnO-CuO nanoparticles' crystalline shapes are demonstrated by their respective crystallite sizes of 12.58 and 1.88 nm. Based on the results of analysis with SEM, curcumin-capped ZnO-CuO and chitosan-curcumin-capped ZnO-CuO nanoparticles have a dense surface structure. The average diameter of inhibition zone (clear zone) produced by chit-cur-ZnO-CuO nanoparticles is 14.61 mm, while the clear zone produced by cur-ZnO-CuO nanoparticles is 9.52 mm. Chit-cur-ZnO-CuO has superior antibacterial qualities to cur-ZnO-CuO nanoparticles.
Study of Boron Complexation with Pyridoxine: Effect of Interaction Time, Temperature, and Amount of Pyridoxine Hidayati, Nurlisa; Fianti, Ariqah; Arnela, Mita
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.76

Abstract

Borax is one of the compounds of boron (B), which is widely used as an anti-fungal, wood preservative, and antiseptic in cosmetics. Boron can form complexes with biomolecules such as pyridoxine, so it is interesting to know the interaction between borax and pyridoxine. This study seeks to investigate the complexation of boron, which is obtained from borax, with pyridoxine under various conditions of time, temperature, and the amount of pyridoxine. The resulting complex was characterized by UV-Vis spectrophotometry, Fourier Transform Infrared (FT-IR), and X-Ray diffraction (XRD). The study was initiated by optimizing the complexation of boron and pyridoxine. The maximum wavelengths of pyridoxine were found in the 205 nm and 292 nm regions, while the boron-pyridoxine complex was found in the 237 nm region. The obtained contact time, temperature, and amount of pyridoxine are 40 minutes, 60 °C, and 2 mL respectively. The results of the Fourier transform infrared (FT-IR) analysis of the boron-pyridoxine complex showed that there were OH groups, aromatic C=C groups, aliphatic C-C groups, B-H groups, and B-O groups. The results of the XRD analysis of the boron-pyridoxine complex obtained a diffraction angle of 30.93°.
Co-Authors Addy Rachmat Ade Arinia Rasyad Ahmad Fatoni Aldes Lesbani Anandika, Aditya Arnela, Mita Bijak Riyandi Ahadito Desnelli Desnelli Dhamayanti, Erika Doddy Rusli, Doddy Elfita Elfita Eliza Eliza Fahma Riyanti Fianti, Ariqah Haryana, Rista Hasanudin Hasanudin Hesti A. Harahap, Hesti Hilma, Hilma Julinar Julinar Kiki Amelia, Kiki Kimur, Melviana Violetta Komala Syari Meiliza, Cici MUHAMMAD SAID Musyrifah, Arina Nirwan Syarif, Nirwan Nova Yuliasari Novriyanti, Selly Nurlailia, Umi Poedji Loekitowati Hariani Risfidian Mohadi Sabat Okta Ceria Sitompul, Sabat Okta Ceria Salni Sari, Yopi Rikma Sherly Agustina, Sherly Sri Suryani Sriwijaya, Reza Agung Umli, Afnita Fatmawati Wahyuni, Yenni Sri