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All Journal VALENSI JURNAL KIMIA SAINS DAN APLIKASI JURNAL PIJAR Alchemy Jurnal Penelitian Kimia Majalah Kedokteran Gigi Indonesia ODONTO Dental Journal Indonesian Journal of Chemistry Chemistry Indonesian Journal of Chemical Research Molluca Journal of Chemistry Education (MJoCE) Odonto dental journal Bulletin of Chemical Reaction Engineering & Catalysis
Nuryono Nuryono
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara PO BOX BLS 21 Yogyakarta 55281
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Dentistry Education Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics

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ADSORPSI Cd(II), Ni(II) DAN Mg(II) PADA SILICA GEL YANG TERIMOBILISASI DENGAN 2-MERKAPTOBENZIMIDAZOL Nuryono, Nuryono; Nuzula, Firdausi; Narsito, Narsito
Alchemy Jurnal Penelitian Kimia Vol 7, No 1 (2008)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

Telah dilakukan imobilisasi 2-merkaptobenzimidasol (MBI) pada permukaan silika gel menggunakan ?-glisidoksipropiltrimetoksisilan (?-GPS) sebagai senyawa penghubung. Hasil imobilisasi (Si-MBI) kemudian digunakan untuk mengadsorpsi Cd(II), Ni(II), dan Mg(II) dalam medium air. Penelitian meliputi studi pengikatan  ?-GPS pada silika gel dalam medium air yang diikuti imobilisasi larutan MBI dalam dimetilformamida  (DMF) pada silika epoksi (Si-Ep) yang terbentuk. Karakterisasi hasil imobilisasi larutan MBI meliputi penentuan MBI yang terikat , parameter kinetika, dan termodinamika adsorpsi terhadap Cd(II), Ni(II), dan Mg(II). Gugus-gugus fungsional Si-MBI yang berperan pada adsorpsi ion logam diidentifikasi menggunakan spektroskopi inframerah (IR) dan secara kuantitatif kandungan MBI dalam Si-MBI ditentukan dengan metode Kjeldahl. Adsorpsi Cd(II), Ni(II), dan Mg(II) dilakukan dalam sistem batch. Ion logam yang teradsorpsi secara kuantitatif dihitung dari selisih logam sebelum dan sesudah adsorpsi hasil pengukuran menggunakan metode spektroskopi serapan atom. Berdasarkan data yang diperoleh, kesetimbangan adsorpsi, energi adsorpsi, dan kapasitas adsorpsi ditentuka menggunakan model isoterm adsorpsi Langmuir. Hasil penelitian menunjukkan bahwa kandungan MBI dalam Si-MBI sebesar 584 µmol/g. Adsorpsi ion logam pada Si-MBI berlangsung melalui dua tahap yaitu cepat dan lambat dengan urutan konstanta laju adsorpsi masing-masing Cd(II) > Mg(II) > Ni(II) > Cd(II). Kapasitas adsorpsi Si-MBI terhadap Cd(II), Ni(II), dan Mg(II) berturut-turut sebesar 13,26 µmol/g, 107,53 µmol/g, dan 123,46 µmol/g. Adsorpsi Cd(II) diduga sebagian besar merupakan kemisorpsi dengan energy adsorpsi 23,67 kJ/mol, sedangkan Ni(II) dan Mg(II) kemungkinan besar didominasi fisisorpsi dengan energi adsorpsi masing-masing sebesar 15,26 kJ/mold an 15,82 kJ/mol.
PREPARATION AND CHARACTERIZATION OF THE MONOMETAL CATALYST Mo/ USY Nugrahaningtyas, Khoirina Dwi; Trisunaryanti, Wega; Triyono, Triyono; Nuryono, Nuryono; Widjonarko, Dian Maruto; Mulyani, Mulyani
Alchemy Jurnal Penelitian Kimia Vol 8, No 1 (2012)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

This research deals with preparing and characterizing the metal based-catalyst of Mo supported on Ultra Stable Y-zeolite (USY) and, is aimed to ascertain the best produced catalyst for hydrotreatment reaction in standpoint of its capabilities on removing the unwanted-heteroatom compounds.Procedure of catalyst treatment was preparation, activation and characterization. Monometal catalyst Mo/USY was prepared under variation concentrations of salt metal precursor (concentrations), i.e 2, 6, 10 and 14% wt. The activation steps were carried out by calcination, oxidation, and reduction. Characterization of catalysts were determined by data of XRD, AAS, acidity, surface area and its porosity. The result shows that these catalysts have several good characters that supporting their usefulness in hydrotreatment-catalytic reaction. In addition, catalyst Mo10/USY performs many ideal criteria as the best functional catalyst.
KINETIKA ADSORPSI ION EMAS(III) OLEH HIBRIDA MERKAPTO SILIKA Hamdiani, Saprini; Nuryono, Nuryono; Rusdiarso, Bambang
Jurnal PIJAR Vol 10, No 1 (2015)
Publisher : Jurnal PIJAR

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Abstract

Telah dilakukan kajian kinetika adsorpsi ion emas(III) oleh adsorben hibrida merkapto silika (HMS). HMS disintesis melalui proses sol-gel dengan prekursor natrium silikat (Na2SiO3) dari abu sekam padi. HMS dibuat dengan menambahkan asam klorida pada campuran senyawa 3-(trimetoksilil)-1-propantiol (TMSP) dan larutan Na2SiO3. Kinetika adsorpsi ditentukan dengan melakukan adsorpsi sistem statik (batch) dengan variasi waktu. Jumlah ion emas yang teradsorpsi dihitung secara kuantitatif berdasarkan selisih konsentrasi logam sebelum dan setelah adsorpsi yang dianalisis dengan spektroskopi serapan atom (SSA). Data menunjukkan interaksi HMS dengan ion emas cenderung mengikuti pola kinetika reaksi pseudo orde-2 dengan nilai konstanta laju reaksi (k) = 1x10-2 g mg-1min-1. Berdasarkan nilai perubahan energi bebas Gibbs adsorpsi standar (-ΔG°= 34,63-37,99 kJ/mol) menunjukkan bahwa adsorpsi berlangsung secara kimia (kemisorpsi).
DESORPSI ION EMAS(III) DALAM SISTEM MULTILOGAM AU/NI/AG DENGAN MENGGUNAKAN VARIASI TIOUREA-HCL Manuhutu, Julita; Nuryono, Nuryono; Santosa, Sri Juari
Molluca Journal of Chemistry Education (MJoCE) Vol 8 No 1 (2018): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Prodi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol8iss1pp56-63

Abstract

Desorption of gold(III) in multi-metal system Au/Ni/Ag on amino silica hybrid (ASH) column have been studied. ASH was synthesized by sol gel process with sodium silicate (Na2SiO3) from rice husk ash (RHA) as precursor. ASH was synthesized by adding 3M of hydrochloride acid solution to the mixture of (3-aminopropyl)-trimethoxysilane and Na2SiO3 solution untill pH 7 (neutral). ASH was characterized by infrared spectroscopy (IR) and X-ray diffraction (XRD). Adsorption of multi-metal (Au/Ni/Ag) was carried out with a column technique. The adsorbed metal ions [Au(III), Ni(II), and Ag(I)] were quantitively using atomic absorption spectroscopy (AAS). Desorption of Au(III), Ni(II), and Ag(I) at ASH was conducted by using thioruea in hydrochloride solution with variation of concentration. Total desorption of metal ions was calculated based on AAS analysis. For desorption of multi-metal(Au / Ni / Ag), Au (III) was eluted using 1M HCL is 16,60%; using 0,5 M thiourea in 1M HCl is 57,45%, and with 1M thiourea in 1M HCl is 59,12%.
Pengaruh Keasaman Medium dan Imobilisasi Gugus Organik pada Karakter Silika Gel dari Abu Sekam Padi Sriyanti, Sriyanti; Taslimah, Taslimah; Nuryono, Nuryono; Narsito, Narsito
Jurnal Kimia Sains dan Aplikasi Vol 8, No 3 (2005): Volume 8 Issue 3 Year 2005
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (392.605 KB) | DOI: 10.14710/jksa.8.3.74-80

Abstract

Silica gel is well known as a material that may be used as adsorbent, host matrix for catalyst, etc. Hence, synthesis of silica gel from rice hull ash has been done by evaluation of the effect of medium acidity and organic group immobilized in the snythesis of silica gel.Synthesis of silica gel was done by adding sodium silicate solution from rice hull ash to hydrochloric acid until pH 3, 5 and 7. Immobilization of thiol group and amino group in silica was done by adding 3-mercaptopropyltrimethoxysilane or 3-aminopropyl-trimethoxysilane to sodium silicate solution and hydrochloride acid solution until pH: 7. The products were characterized by X-ray deffractometer and FTIR Spectroscopy.Results showed that porousitas of silica increased with increasing medium acidity ( decreasing pH medium).Immobilization thiol or amino group in silica added a functional group on silica but did not destroy primary structure of silica gel.Key Words: Silica Gel, Rice Hull Ash, 3-mercaptopropyltrimethoxysilane, 3-aminopropyl-trimethoxysilane.
Pengaruh Perlakuan Asam dan Kalium Permanganat terhadap Karakter Zeolit Tasik Pardoyo, Pardoyo; Narsito, Narsito; Nuryono, Nuryono
Jurnal Kimia Sains dan Aplikasi Vol 8, No 1 (2005): Volume 8 Issue 1 Year 2005
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (131.84 KB) | DOI: 10.14710/jksa.8.1.28-32

Abstract

Telah dilakukan penelitian untuk mengetahui pengaruh perlakuan asam dan kalium permanganatterhadap karakter zeolit alam Tasik. Perlakuan pertama menggunakan KMnO4 dan H2SO4, zeolit denganperlakuan ini disebut Z-22. Perlakuan kedua menggunakan KMnO4, H2SO4 dan HCl selanjutnya disebut Z-33.Sebagai pembanding, dilakukan pencucian dengan akuabides terhadap zeolit alam Tasik selanjutnya disebut Z-11. Karakter yang diuji meliputi perubahan nilai kapasitas tukar kation (KTK), rasio Si/Al, keasaman, hilang padapemijaran dan kristalinitas. Hasil penelitian menunjukkan nilai KTK, rasio Si/Al, keasaman, hilang padapemijaran dan kristalinitas Z-22 meningkat terhadap Z-11. Pada Z-33, hanya nilai hilang pada pemijaran yangmenunjukkan peningkatan sedangkan karakter uji yang lain relatif menurun.
Sintesis Bahan Hibrida Amino-Silika dari Abu Sekam Padi Melalui Proses Sol-Gel Sriyanti, Sriyanti; Taslimah, Taslimah; Nuryono, Nuryono; Narsito, Narsito
Jurnal Kimia Sains dan Aplikasi Vol 8, No 1 (2005): Volume 8 Issue 1 Year 2005
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.238 KB) | DOI: 10.14710/jksa.8.1.1-8

Abstract

Silika dengan imobilisasi gugus amino dengan bahan dasar abu sekam padi telah dibuat melaluiproses sol-gel. Sebagai perbandingan, dibuat pula silika gel tanpa gugus organik.Larutan mendidih natriumsilikat (1,5 N) ditambahkan pada abu sekam padi, kemudian filtratnya dipisahkan sebagai larutan natriumsilikat. Selanjutnya , kedua filtrat digunakan untuk sintesis silika gel dengan dan tanpa gugus organik. 3-Aminopropiltrimetoksisilan (APTS) ditambahkan ke dalam larutan natrium silikat, dilanjutkan denganpenambahan asam klorida perlahan-lahan sampai pH 7 dan pH 3. Gel yang terbentuk diperam selama 18jam dengan temperatur 80oC, dicuci dengan air kemudian dikeringkan pada temperatur 80oC selama 9 jam.Silika gel dibuat dengan cara yang sama. Kedua produk dikarakterisasi dengan FTIR dan XRD, serta diujikemampuan adsorpsinya terhadap logam Ni(II). Hasil menunjukkan bahwa silika gel hasil mempunyai polayang sama dengan silika Kiesel Gel 60 dari Merck, baik spektra FTIR maupun defraktogram XRDnya,sedangkan bahan hibrida amino-silika mempunyai puncak-puncak serapan yang menunjukkan adanyagugus amin (-NH2) dan rantai alifatik (-CH2-) di samping kesamaan pola dengan silika standar. Dalam ujiadsorpsi, amino-silika mengadsorpsi Ni(II) lebih tinggi dibanding silika gel dengan kapasitas adsorpsimasing-masing 0, 106 mol/g adsorben dan 0,0088 mol/g adsorben.
Impregnation of various fiber tapes toward mechanical properties of dental fiber-reinforced composites Sunarintyas, Siti; Irnawati, Dyah; Harsini, Harsini; Rinastiti, Margareta; Nuryono, Nuryono
Majalah Kedokteran Gigi Indonesia Vol 9, No 1 (2023): April
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/majkedgiind.80060

Abstract

Synthetic dental fiber tape for fiber reinforcement (FRC) restoration is relatively costly and its availability is still limited in Indonesia, so natural dental fibers have been used as an alternative material. The aim of this study was to assess the effect of impregnation of various fiber tape toward the flexural strength and hardness of FRC. The materials used were natural Bombyx mori silk fibers (Indonesia), dental polyethylene tape (Construct Kerr, USA), dental Quartz tape (Quartz Splint UD, France), dental E-glass tape (Everstick TM, GC, Japan), silane coupling agent (Ultradent, Jordan), and composite resin (Denfil-Flow, USA). Five groups of samples consisted of FRC with various fiber tapes were prepared: unidirectional-silk, braided-silk, quartz, polyethylene, and E-glass. The five groups of FRC were tested to determine the flexural strength and hardness. The results were analyzed by one-way ANOVA, followed by LSD test. The results showed that the highest flexural strength was in the quartz group (496.84 ± 109.14 MPa), while the lowest was in the braided-silk group (139.39 ± 4.30 MPa). The highest hardness property was in the unidirectional-silk group (141.29 ± 25.17 VHN), while the lowest was in the braided-silk group (139.39 ± 4.30 VHN). The ANOVA showed that various fiber tapes significantly influenced the flexural strength and hardness of FRC (p < 0.05). The LSD showed that the unidirectional-silk, braided-silk, and polyethylene groups demonstrated no significant difference. The LSD for hardness showed that the unidirectional-silk group had a significant difference with the other groups (p < 0.05). It can be concluded that various fiber tapes influenced the flexural strength and hardness of FRC. Natural silk fibers showed comparable flexural strength and hardness with the other fiber tapes.
Effect of zinc oxide nanoparticle concentration coated on acrylic resin upon surface roughness and abrasion resistance Yoga, I Gede Krisna Merta; Harsini, Harsini; Sunarintyas, Siti; Handajani, Juni; Nuryono, Nuryono; Irnawati, Dyah
Majalah Kedokteran Gigi Indonesia Vol 10, No 1 (2024): April
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/majkedgiind.92000

Abstract

Acrylic resin is the material most often used as a base for dentures; however, acrylic resin has shortcomings in its biological properties as it does not have antimicrobial properties. ZnO is added to acrylic resin because of its antimicrobial properties. The aim of this research is to determine the effect of the concentration of ZnO nanoparticles as a heat polymerization acrylic resin coating on the coating’s resistance to abrasion. A total of 24 acrylic resin samples were made, each measuring 13 x 13 x 2 mm. The acrylic resin was coated with 3-(trimethoxysilyl)propyl methacrylate), then with ZnO nanoparticles with varying concentrations of 2.5%, 5%, and 7.5% in ethanol. ZnO nanoparticle coating was applied using the dip coating method. Subsequently, the samples were subjected to an initial roughness test, abrasion test, and final roughness test. The data obtained were analyzed using one-way ANOVA and LSD(0.05). The results showed that the mean change in roughness (μm) and standard deviation for groups I to IV were 0.11 ± 0.13, 0.08 ± 0.33, 0.1 ± 0.12, and 0.19 ± 0.15, respectively. The results of the one-way ANOVA test showed that there was no significant difference in the roughness after the abrasion test (p > 0.05). Thus, zinc oxide nanoparticles can reduce surface roughness and are resistant to surface abrasion.
Recovery of Gold in Au/Cu/Mg System from SH/Fe3O4@SiO2 as a Magnetically Separable and Reusable Adsorbent Qomariyah, Ani; Nuryono, Nuryono; Kunarti, Eko Sri
Indonesian Journal of Chemical Research Vol 9 No 1 (2021): Edition for May 2021
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2021.9-ani

Abstract

The recovery of Au(III) in the Au/Cu/Mg system from mercapto-silica hybrid coated magnetite (SH/Fe3O4@SiO2) adsorbent has been investigated. This adsorbent characterized using FT-IR to determine functional groups, crystallinity study using XRD, surface morphology using SEM, material compositions with XPS, surface area using nitrogen adsorption, and TGA to study thermal stability. Adsorption of metal ions carried out with batch system for 30 minutes at a pH of 3. In the Au/Cu/Mg multi-metal system, Au(III) ions were easily desorbed (approximately 85%) by SH/Fe3O4@SiO2 adsorbent based on HSAB (Hard Soft Acid Base) theory that Au(III) ion is a softer metal than Cu(II) and Mg(II) where Au(III)>Cu(II)>Mg(II). The recovery of Au(III) ions was easily desorbed using thiourea 7% in 0,1 M HCl solution with the percentage of 79%. The process of SH/Fe3O4@SiO2 adsorbent separation after adsorption and recovery was very easy. The adsorbent could perfectly separate in 5 minutes using an external magnet. The SH/Fe3O4@SiO2 adsorbent can be reused on the adsorption-desorption process of Au(III) in the Au/Cu/Mg system approximately four times of cycle reactions.
Co-Authors Abd. Rasyid Syamsuri Ali Djamhuri Bambang Rusdiarso Buhani Buhani Dewi Agustiningsih, Dewi Dian Maruto Widjonarko Dwi Rasy Mujiyanti Dyah Irnawati Eko Sri Kunarti Firdausi Nuzula Hatmanto, Adhi Dwi Helmi Fathurrahman, Helmi Juni Handajani Kamilia, Salwa Kamiya, Yuichi Khoirina Dwi Nugrahaningtyas Khuzaimah, Ismi Margareta Rinastiti mariyam mariyam, mariyam Mochammad Imron Awalludin Mukhayani, Feri Mulyanegara, Guntur Narsito Narsito Nurdina, Rakhma Amalia Pambudi, Fajar Inggit Pardoyo Pardoyo Prayoga, Dedo Kevin Pusaka, Semerdanta Qomariyah, Ani Samudin, Mohammad Nur Saprini Hamdiani Simatupang, Erwinton Siti Sunarintyas Sri Budi Barunawati Sri Juari Santosa Sumerta, I Wayan Susiana, Carissa Ayu Sutarno Sutarno Suyanta Suyanta Taslimah Taslimah Triyono Triyono Wega Trisunaryanti Yoga, I Gede Krisna Merta Yuliatun, Leny