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

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SINTESIS DAN KARAKTERISASI SENYAWA OKSOTRINUKLIR [RU2CO(O)(OOCCH3)6(C5H5N)3](CLO4) Lesbani, Aldes; Mohadi, Risfidian; Hidayati, Nurlisa
Jurnal Kimia (Journal of Chemistry) Vol. 6, No. 2 Juli 2012
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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The oxotrinuclear compound [Ru2Co(O)(OOCCH3)6(C5H5N)3](ClO4) has been synthesized using RuCl3?nH2O at room temperature under oxygen atmospheric condition. The oxotrinuclear complex was characterized by FT-IR spectrophotometer and mass spectrometer with cold spray ionization (CSI) method. The FT-IR spectra of the resulted oxotrinuclear compound show has specific vibration at 692 cm-1. This absorption is related to M3O vibration (M= metal). CSI-mass spectra of the oxotrinuclear compound show that pyridine as ligand was fragmented in oxotrinuclear compound.
SYNTHESIS, CHARACTERIZATION AND APPLICATION OF DIATOMACEOUS EARTH – 4,4-DIAMINODIPHENYLETHER-O-HYDROXYBENZALDEHYDE AS AN ADSORBENT OF AG(I) METAL ION Fatoni, Ahmad; Koesnarpadi, Soerja; Hidayati, Nurlisa
Indonesian Journal of Chemistry Vol 10, No 3 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.21436

Abstract

Synthesis, characterization and application of Diatomaceous Earth-4,4-Diamino diphenylether-O-Hydroxybenzaldehyde (diatomaceous earth-DDE-O-Hb) as an adsorbent of Ag(I) metal ion has been done. The aim of the purification of natural diatomaceous earth with KMnO4, H2SO4 and HCl were to obtain pure diatomaceous earth, remove the other compounds and de-alumination, respectively. The adsorbent of diatomaceous earth-DDE-O-Hb was synthesized by reacting pure diatomaceous earth with 3-chloropropyltrimethoxysilane, 4,4-diaminodiphenylether (DDE) and O-hydroxybenzaldehyde (O-Hb). The FTIR spectroscopy was used to identify Schiff base group in diatomaceous earth-DDE-O-Hb adsorbent. The diatomaceous earth-DDE-O-Hb was applied as adsorbent in the adsorption of Ag(I) metal ion. Parameters influencing the interaction such as time, pH and concentration were optimized. The result showed that diatomaceous earth-DDE-O-Hb adsorbent have Schiff base group. The interaction time of 90 min showed that 70.79% of Ag(I) metal ions at the concentration of 100 ppm can be adsorbed by diatomaceous earth-DDE-O-Hb adsorbent. At the pH solution between 2 to 7, the concentration of 100 ppm of Ag(I) metal ion that can adsorbed by diatomaceous earth-DDE-O-Hb adsorbent was up to 98% and at the concentration of 25 ppm Ag(I) metal ion, the adsorption of Ag(I) by diatomaceous earth-DDE-O-Hb adsorbent was near 91%.
SINTESIS HIBRIDA ANORGANIK-ORGANIK V2O5-ASAM HUMAT DENGAN METODE SOL-GEL Mohadi, Risfidian; Hidayati, Nurlisa; Syari, Komala
Jurnal Sains dan Terapan Kimia Vol 7, No 2 (2013)
Publisher : Jurnal Sains dan Terapan Kimia

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Sintesis  senyawa  hibrida  anorganik-organik  V2O5-Asam  humat  menggunakan metode  sol-gel.  Perbandingan    bahan  yang  digunakan  adalah  V2O5:asam humat:FeCl3:air  (1:1:1:40:17)  dilarutkan  dan  didinginkan  sampai  suhu  30oC, disaring  dan  didapatkan  hibrida  senyawa  anorganik-organik  tersebut.  Senyawa  ini kemudian  dikarakterisasi  dengan  spektrofotometer  FT-IR  dan  XRD.  Hasil identifikasi dengan FT-IR diketahui bahwa gugus fungsi yang terdapat pada  asam humat  tidak  muncul  pada  spektra  hibrida  sol-gel  ini  seperti  C=C  aromatik,  C-H alifatik,  C-H  aromatik  ini  mengindikasikan bahwa  asam humat telah berada  dalam rongga V2O5. Hasil analisa dengan XRD, hibrida metode sol-gel ini memiliki indeks miller (111), (110), (100) dengan ukuran simetri (a) adalah 0,267nm.Kata kunci: sol-gel, microstructur, asam humat, V2O5,  hibrida
Karakterisasi Asam Humat dari Gambut Indralaya, Ogan Ilir Sumatera Selatan Mohadi, Risfidian; Hidayati, Nurlisa; Sri Juari Santosa, Sri Juari Santosa Sri Juari Santosa; Narsito, Narsito
Jurnal Penelitian Sains Vol 11, No 1 (2008)
Publisher : Faculty of Mathtmatics and Natural Sciences

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Telah dilakukan isolasi asam humat dari tanah gambut berasal dari Indralaya Ogan Ilir, Sumatera Selatan dengan menggunakan ekstraksi alkali sesuai dengan yang direkomendasi oleh IHSS (International Human Acid Substance Society) dengan sedikit modifikasi, analisis asam humat hasil isolasi meliputi konfirmasi spektra FTIR dan penentuan kuantitatif gugus karboksilat dan –OH fenolat asam humat. Hasil penelitian menunjukkan bahwa senyawa humat hasil isolasi mempunyai kandungan gugus fungsional asam karboksilat, -OH fenolat dan keasaman total berturut-turut sebesar 353 cmol/kg, 367 cmol/kg dan 720 emol/kg serta kandungan N total sebesar 1,75% dan C/N organik sebesar 6,75.
Modification of Cellulose with 4.4 Diaminodiphenylether-O-Hydroxibenzaldehide as Adsorbent and Its Application for Adsorbing Metalic Ion of Cd2+ In Aqueous Solution HIdayati, Nurlisa; Mohadi, Risfidian; Marsitho, Euis; Fatoni, Ahmad
Indonesian Journal of Fundamental and Applied Chemistry Vol 1, No 2 (2016): June 2016
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v1.i2.47

Abstract

This research on the modification of cellulose using 4,4-diaminodiphenylether and o-hydroxybenzaldehyde and its application to adsorb Cd2+ in aqueous solution has been done. The adsorption studies of cellulose and modified cellulose were done by using batch technique. The cellulose and modified cellulose were characterized by FTIR. The FTIR spectra revealed characteristic bands of 1573 cm-1, 1280 cm-1, 3749 cm-1 and 1056 cm-1. It indicates function group of C=N, C=O, O-H and Si-OR bond, respectively. The FTIR spectra of cellulose and modified cellulose which interacted to Cd2+, it were indicated by the shift in wavenumber 3410 cm-1 to 3371 cm-1. This spectral shift indicating Cd2+ bound to OH-group. In this research, interaction between modified cellulose with Cd2+ confirmed by intensities spectral changes at 1620 cm-1. The adsorption capacity and energy from adsorption of Cd2+ ions toward cellulose were 71,43 mg/g and 4,142 kJ/mol, while toward modified cellulose were 55,56 mg/g and 0,13 kJ/mol, respectively. Keywords: cellulose, 4,4-diaminodiphenylether-o-hydroxybenzaldehyde, adsorption, Cd2+
Transesterification of Tropical Edible Oils to Biodiesel Using Catalyst From Scylla serrata Mohadi, Risfidian; A. Harahap, Hesti; Hidayati, Nurlisa; Lesbani, Aldes
Sriwijaya Journal of Environment Vol 1, No 2 (2016): Developing Without Destruction
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22135/sje.2016.1.2.24-27

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Abstract: Scylla serata shell was decomposed at various temperatures ranging from 700-1100 oC to obtain calcium oxide. Calcium oxide from decomposed Scylla serrata shell was characterized through X-Ray analysis, FTIR spectroscopy, and morphology analysis. Furthermore, decomposed Scylla serrata shell was used as catalyst for transesterification of tropical edible oils to form biodiesel. Biodiesel was characterized through density, viscosity, fatty acid value, and iodine number. The results showed that decomposed Scylla serrata shell at 900 oC could produce calcium oxide similar with standard, which was indicated from X-ray powder diffraction pattern of decomposed shell with JCPDS data. FTIR spectrum showed that main vibration of calcium oxide was observed at 393 cm-1. Morphology analysis using SEM indicated that uniform calcium oxide was obtained after decomposition. The use of decomposed shell as base catalyst for transesterification of tropical edible oils resulted biodiesel with density, viscosity, fatty acid value, and iodine number appropriated with SNI standard.Keywords: transesterification, edible oils, biodiesel, Scylla serrataAbstrak (Indonesian): Scyalla serrata telah didekomposisi pada berbagai suhu dari 700-1100 oC untuk diperoleh kalsium oksida. Kalsium oksida hasil dekomposisi dari cangkang Scylla serrata dikarakterisasi melalui pengukuran sinar X, analisis FTIR, dan analisis morfologi. Lebih lanjut, dekomposisi cangkang Scylla serrata digunakan sebagai katalis transesterifikasi minyak yang dimakan dari daerah tropis menjadi biodisel. Biodiesel dikarakterisasi melalui penentuan densitas, viskositas, nilai asam lemak, dan bilangan iod. Hasil penelitian menunjukkan bahwa dekomposisi cangkang Scylla serrata pada 900 oC dapat menghasilkan kalsium oksida mirip kalsium oksida standar yang diindikasikan dari pola difraksi XRD yang mirip data JCPDS. Spektrum FTIR menunjukkan vibrasi utama kalsium oksida teramati pada bilangan gelombang 393 cm-1. Analisis morfologi menggunakan SEM menunjukkan bahwa bentuk yang lebih seragam diperoleh setelah proses dekomposisi. Penggunaan cangkang hasil dekomposisi sebagai katalis basa untuk transesterifikasi minyak yang dimakan dari daerah tropis menghasilkan biodisel dengan densitas, viskositas, nilai asam lemak, dan bilangan iod yang sesuai dengan standar SNI.Kata kunci: transesterifikasi, minyak yang dimakan dari daerah tropis, biodiesel, Scylla serrata
STUDI KINETIKA DAN TERMODINAMIKA ADSORPSI TEMBAGA (II) MENGGUNAKAN ADSORBEN KITIN-SELULOSA HASIL IMPREGNASI Lesbani, Aldes; Agustina, Sherly; Hidayati, Nurlisa; Mohadi, Risfidian
Indonesian Journal of Chemical Science Vol 4 No 1 (2015)
Publisher : Indonesian Journal of Chemical Science

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Telah dilakukan proses impregnasi kitin dari cangkang bekicot dan selulosa dari jerami padi menggunakan tiourea sebagai impregnan. Hasil impregnasi dikarakterisasi menggunakan spektrofotometer FTIR yang dibandingkan dengan spektra FTIR kitin maupun selulosa sebelum impregnasi. Selanjutnya hasil impregnasi kitin-selulosa digunakan sebagai adsorben pada adsorpsi tembaga(II). Proses adsorpsi dipelajari melalui parameter kinetika dan termodinamika dan dibandingkan dengan kitin dan selulosa sebelum impregnasi. Hasil penelitian menunjukkan bahwa proses impregnasi berhasil dilakukan yang ditunjukkan adanya bilangan gelombang baik untuk kitin maupun selulosa pada spektra FTIR. Hasil penentuan parameter kinetika menunjukkan proses adsorpsi mengikuti order laju reaksi adsorben hasil impregnasi (0,006 menit-1)  > kitin (0,005 menit-1) > selulosa (0,004 menit-1). Penentuan parameter termodinamika yang diamati dari kapasitas adsorpsi menunjukkan order kapasitas adsorpsi pada adsorben hasil impregnasi (5x10-4 mol/g) > kitin (2,5x10-4 mol/g) > selulosa (0,63x10-4 mol/g).
Calcium oxide from Pomacea canaliculata and Babylonia spirata snails Septiani, Triayu; Hidayati, Nurlisa; Mohadi, Risfidian
Science and Technology Indonesia Vol 2 No 3 (2017): July
Publisher : ARTS Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.253 KB) | DOI: 10.26554/sti.2017.2.3.68-70

Abstract

The preparation of CaO from golden snail (Pomacea canaliculata) and lion snail (Babylonia spirata) through decomposition at various temperature i.e 700o, 800o, 900o and 1000oC during 3 hours has been carried out. Calcium oxide from decomposition was characterized using X-Ray diffractometer.  Furthermore, the characterization was continued using FT-IR spectrophotometer and determination of surface area using BET analysis. The results showed that the optimum temperature for preparation of CaO from  golden snail and lion snail at  900oC with 2q values are: 32.2° , 37.4o , 54o , 64.2o , 67.3° and 32.4°, 37.5°, 67.5 °,  respectively. FT-IR spectra showed characteristic vibrations for the Ca-O in the sample golden snail and lion snail combustion products at a temperature of 900oC. Ca-O absorption of golden snail samples in the wavenumber around 362.62 cm-1 and lion snail seen in wavenumber around 384.76 cm-1 indicating the presence of Ca-O vibration of the metal oxide of preparation. Golden snail and the lion snail combustion at 900oC temperature of each sample which has a surface area of 20.495 m2/g, while the lion snail 17.308 m2/g.  The pore diameter of golden snail 3.753 nm and 11.319 nm of lion snail. All CaO can be categorized as mesoporous material. Keywords: golden snail, lion snail, decomposition, CaO
Penurunan Konsentrasi Cr(VI) Dalam Air Dengan Koagulan FeSO4 Hariani, Poedji Loekitowati; Hidayati, Nurlisa; Oktaria, Melly
Jurnal Penelitian Sains Vol 12, No 2 (2009)
Publisher : Faculty of Mathtmatics and Natural Sciences

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Telah dilakukan penelitian untuk menurunkan kadar kromium dalam air dengan menggunakan koagulan FeSO4. Parameter yang diteliti adalah pH, konsentrasi koagulan dan waktu kontak optimum. Pengukuran kadar ion kromium pada semua perlakuan ditentukan dengan metode Spektrofotometri Serapan Atom (SSA). Hasil penelitian menunjukkan kondisi optimum koagulasi pada pH 8 dengan konsentrasi koagulan FeSO4 140 mg/L dan waktu kontak 60 menit dapat menurunkan konsentrasi ion kromium 100 % dari konsentrasi ion kromium awal 20 mg/L.
Sintesis Senyawa Kompleks Kobalt dengan Asetilasetonato Saria, Yosi; Lucyanti, Lucyanti; Hidayati, Nurlisa; Lesbani, Aldes
Jurnal Penelitian Sains Vol 15, No 3 (2012)
Publisher : Faculty of Mathtmatics and Natural Sciences

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Telah dilakukan sintesis dan karakterisasi senyawa kompleks kobalt(II) dengan ligan asetilasetonato. Karakterisasi senyawa kompleks hasil sintesis dilakukan dengan penentuan rendemen hasil sintesis, titik leleh, air kristal, kandungan logam, bobot molekul, jumlah ion, sifat magnet, serta identifikasi menggunakan spektrofotometer infra merah. Hasil penelitian menunjukkan bahwa rendemen hasil sintesis senyawa kompleks kobalt-asetilasetonato yakni 82,46% dengan titik leleh sebesar 160-162_C. Air kristal yang terkandung dalam senyawa kompleks sebesar dua mol/mol dengan kandungan logam kobalt didalam senyawa kompleks hasil sintesis sebesar 28,32%(b/b) dan berat molekul 192 g/mol. Senyawa kompleks hasil sintesis bersifat paramagnetik dengan tidak mempunyai ion. Vibrasi karbonil dari asetilasetonato pada senyawa kompleks hasil sintesis muncul pada bilangan gelombang 1500-1600 cm−1. Struktur senyawa kompleks hasil sintesis adalah Co(acac) 2H2O.