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All Journal VALENSI JURNAL KIMIA SAINS DAN APLIKASI Jurnal Ilmu Dasar Jurnal Natur Indonesia Sainstek TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Matematika & Sains Eksergi: Chemical Engineering Journal Jurnal Riset Kimia ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Kimia dan Kemasan PROSIDING SEMINAR KIMIA Chimica et Natura Acta INDONESIAN JOURNAL OF APPLIED PHYSICS ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry JURNAL PHOTON Eksakta : Berkala Ilmiah Bidang MIPA Indonesian Journal of Electrical Engineering and Computer Science Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Hydrogen: Jurnal Kependidikan Kimia Jurnal Kimia dan Kemasan AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Makara Journal of Science SAINTI: Majalah Ilmiah Teknologi Industri Jurnal Kimia Unand
Syukri Arief
Andalas University
Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Social Sciences Other

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PEMBUATAN LAPISAN TIPIS TiO2 -DOPED LOGAM M (M= Ni, Cu dan Zn) DENGAN METODA DIP-COATING DAN APLIKASI SIFAT KATALITIKNYA PADA PENJERNIHAN AIR RAWA GAMBUT Arief, Syukri; Alif, Admin; Willian, Nancy
Jurnal Riset Kimia Vol 2, No 1 (2008): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v2i1.111

Abstract

 ABSTRACT Preparation of TiO2-doped M (M = Ni, Zn and Cu) has been prepared on glass substrate using dip-coating technique. Titanium isopropoxide (TIP), Ni(OAct)2.4H2O, Zn(OAct)2.2H2O dan Cu(OAct)2 were used as starting materials and diethanolamine (DEA) as additive in isopropanol solution. Solutions were prepared by mixing of various concentration of metals (1, 3 and 5 mol %)  in 0.5 M TIP solution. Thin films were performed by immersion of glass substrate into solution by withdraw speed of 20 cm/min. Coated glass were dried at 100 – 110°C and heated at 500°C the process were repeated for several time. The product was characterized by XRD and showing TiO2 layer of anatase structure. EDX analysis has shown that thin films have found of Ti and doped-metal. Their crystallized sizes were calculated by Scherrer formula shown that it obtained in various in range of 12-21 nm. According to transformation effectively of titania doped M in peat swam water shown that catalytic activity 34.4 – 53.7% for the irradiation during 24 hours. Keywords : titania, thin films, photocatalytic properties
PENGARUH KONDISI KALSINASI PADA SINTESIS SENYAWA HYDROXYAPATITE Utami, Lisa; Arief, Syukri; Jamarun, Novesar
Sistem Informasi Vol 2 No 1 (2011): Jurnal Photon
Publisher : Fakultas MIPA dan Kesehatan Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1030.206 KB)

Abstract

Kalsium fosfat telah menjadi perhatian yang menarik dalam bidang medis dan kedokteran karena biocompatibilitynya yang baik dan struktur serta komposisi kimianya yang sama dengan fasa mineral jaringan keras manusia (tulang dan gigi). Penelitian ini difoukuskan untuk mempelajari faktor yang mempengaruhi morfologi dan komposisi fasa dari senyawa hydroxyapatite dengan menggunakan prekusor diammonium hydrogen phosphate sebagai sumber fosfat serta pengaruh kalsinasi pada suhu 200, 400, 600, 800 dan 1000oC. Produk hidroxyapatite yang dihasilkan dikarakterisasi dengan FTIR, XRD, SEM dan TGA. Hidroxyapatite yang dihasilkan dengan variasi suhu kalsinasi mempengaruhi morfologi dan komposisi fasa dari senyawa kalsium fosfat yang dihasilkan. Fasa yang terbentuk sebelum sampel powder fosfat dikalsinasi dengan (NH4)2HPO4 sebagai sumber fosfat adalah Ca2P2O7.2H2O dengan ukuran kristal 67 nm. Ketika sampel powder kalsium fosfat dikalsinasi pada temperatur 600˚C fasa yang terbentuk dengan menggunakan (NH4)2HPO4 sebagai sumber fosfat adalah hydroxiapatite (HAP) dengan ukuran kristal 8,66 nm Dan ketika sampel dikalsinasi pada temperatur 1000˚C fasa yang dihasilkan yaitu Ca2P2O7 dan Ca3(PO4)2.
MEMPELAJARI STRUKTUR DAN SIFAT NANO LOGAM TEMBAGA MENGGUNAKAN PROGRAM PM3 Sukma, Mulyati; Kusuma, Theresia Sita; Arief, Syukri
Jurnal Riset Kimia Vol 1, No 2 (2008): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v1i2.59

Abstract

  ABSTRACT A research to study the electronic and chemical characteristics of Copper which nano structure using PM3 program has been done. This program part of HyperChem pro 6.0 that performed by Pentium 4. This research has nano 2D and 3D structure (atom number 2-30). Results of computations showed that Copper can make nanosheets, nanorods and nanotubes structure that have the different electronic characteristics from its crystals structure. Fortunately, copper with nano structure could develop as insulator and semiconductor materials. Keywords : Copper, nano structure, nanosheets, nanorods, nanotubes.
PEMBUATAN PASTA DAN PEMBENTUKAN LAPISAN TIPIS HIDROKSI APATIT KARBONAT Samah, Selfa Dewati; Arief, Syukri; Jamarun, Novesar
Jurnal Riset Kimia Vol 7, No 2 (2014): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v7i2.180

Abstract

 ABSTRACTPaste of Carbonated Hydroxyapatite (CHA) as a biocompatible material that can be used in thebone and teeth repair has been developed on preparation of thick film. CHA paste was preparedby mixing precipitate of CHA with CaSO4 and polyethylene glycol (PEG) in 2-propanol assolvent. Paste was deposited on substrate to get thick films by screen printing method. X raydiffraction (XRD) analysis has shown hexagonal crystal structure and crystal size of CHAacquired 7,2 nm by Scherrer’s method. Fourier Transform Infrared (FTIR) analysis has shownabsorption spectra which indicating phosphate, carbonate, and hydroxide group. Size of thiscomposite particles analyzed by PSA (particle size analyzer) about 3μm and pore size was 0.44-0.49 nm obtained from BET analysis, increased with the addition of CaSO4 (0.44 to 0,49 nm).Rephrase PEG was found as an adhesive and homogenize paste on substrat surface. In addition,CHA paste also potentially can be used as bone cement.Keywords : Paste, thick film, carbonated hydroxyapatite
PENGOLAHAN LIMBAH POLIPROPILEN MENJADI BAHAN BAKAR CAIR MELALUI METODE PIROLISIS Bemis, Restina; Jamarun, Novesar; Arief, Syukri
Jurnal Riset Kimia Vol 5, No 2 (2012): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v5i2.217

Abstract

Plastics become the biggest environmental problem when it accumulate in landfills because its non-biodegradable properties. To handle the problems, the plastics were processed to produce liquid fuels by means pyrolysis method which was in this case with and without a catalyst. In this work, polypropylene was used as a precursor and SiO2, zeolites, CaO, Fe as catalysts. FTIR spectrum of pyrolized polypropylene with and without catalysts both have shown C = C functional group at 1648 cm-1. GCMS analysis confirmed the availability of chain length of hydrocarbon between C7 -C27 which is mixture of kerosene and diesel fractions. Catalysts can lower the temperature and time reaction of pyrolysis process as they increase rendement (%) of product. Liquid fuels that produced from polypropylene pyrolysis without catalyst was 72.06%, and with catalysts were 79.59% (SiO2), 74.76%, (zeolite), 76.80% (CaO), and 76.83% (Fe).
SINTESIS DAN KARAKTERISASI WOLLASTONIT BERBAHAN DASAR ALAMI DENGAN METODE HIDROTERMAL -, Rianda; -, Zulhadjri; Arief, Syukri
Jurnal Riset Kimia Vol 8, No 2 (2015): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v8i2.233

Abstract

Indonesia is one of huge paddy producing countries so that it also produces rice husk in a great number. Rice husks contain high silica. Which is good in silica compounds synthesis such as Wollastonit (CaSiO3). Nowadays Wollastonit has attracted great intension doe to its ability to increase mechanical properties of a material. In this work, rice husk was taken from Sariak Laweh, Lima Puluh Kota district and CaO was taken from Halaban, in the same district. Analysis with XRF show that SiO2 and CaO content of both samples were high enough, 97% and 98% which indicated their good potential as silica and calcium source in to synthesize of Wollastonit. Characterization XRD and SEM were found that the Wollastonit obtained which rice husks gave good result.
SINTESIS DAN KARAKTERISASI PARTIKEL NANOSPERIK TIO2 MELALUI METODE HIDROTERMAL GELOMBANG MIKRO Amir, Amelia; -, Emriadi; Arief, Syukri; Manseki, Kazuhiro; Sugiura, Takashi
Jurnal Riset Kimia Vol 7, No 2 (2014): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v7i2.166

Abstract

 ABSTRACTSimple synthesis of nanospherical TiO2 by microwave hydrothermal method has beeninvestigated. Titanium tetra isopropoxide (TTIP) and tetra methyl ammonium hydroxide(TMAOH) were used as precursor. The crystal phase and microstructure were characterized byX-Ray Diffraction (XRD) and transmission electron microscopy (TEM) including selected areadiffraction (SAED). The presence of intense peak in the XRD patterns confirmed to anatase andin good agreement with SAED patterns. Nanospherical of particles were clearly seen in theTEM image and the size of particles was approximately 4-5 nm.Keywords : microwave hydrothermal, colloidal titanates, structure directing agent,nanospherical TiO2
KAJIAN TEORITIS KEMAMPUAN CAPPING KATEKIN, KATEKU TANAT DAN QUARSETIN TERHADAP NANOPARTIKEL PERAK DENGAN MENGGUNAKAN METODA DFT-B Arief, Syukri; -, Emriadi; Saputra, Ade
Jurnal Riset Kimia Vol 9, No 1 (2015): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v9i1.256

Abstract

Interdiffusion mechanism of catechin, catechutannic acid and quercetin are studied by using DFT-B method. But before conducting these experiment, we perform molecular dynamic simulations to find adsorption models probability of each compound. Two models adsorption of quarcetin, four models for catechin and three models for catechutannic acid have been obtained from molecular dynamic simulations. Quantum parameter of each compound, energy and properties adsorption models have been calculated and discussed. The theoretical results were found to be consistent with the experimental data reported. Futhermore, optimization adsorption model samples show that all of adsorbents have weak bonds on the surface of silver nanoparticles. The mechanism can be classified as strong physisorption, so that catechin, catechutannic acid and quercetin can be categorized as good capping agent in synthesis of silver nanoparticles.
SINTESIS DAN KARAKTERISASI ZEOLIT FAUJASIT DARI LIMBAH BATUBARA OMBILIN DENGAN METODA ALKALI HIDROTERMAL AIR LAUT Septiani, Upita; Fatiha, Widya Yuliani; Arief, Syukri
Jurnal Riset Kimia Vol 8, No 2 (2015): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v8i2.235

Abstract

Zeolite synthesis using Ombilin coal fly ash at low temperature with alkaline hydrothermal process has been carried out. The used Fly ash was melted by NaOH at a temperature of 550°C. Alkaline hydrothermal processes in zeolite synthesis performed with variations of temperature at 35°C , 45°C and 60°C . The zeolite that obtained was characterized by using Fourier Transform Infra Red (FT - IR), X - Ray Diffraction (XRD) , Scanning Electron Microscopy (SEM) in combination with EDX . The characterization results showed the formation of zeolite were better when an increasing in temperature processes and the use of sea water as a solvent. On the use of seawater, were obtained sodalit zeolite with the chemical formula Na8(Al6Si6O24)Cl2.
PRODUKSI GLUKOSA DARI BATANG KELAPA SAWIT MELALUI PROSES HIDROLISIS SECARA ENZIMATIS MENGGUNAKAN AMILASE TERMOSTABIL Marlida, Yetti; -, Mirzah; Arief, Syukri; Amru, Khoirul
Jurnal Riset Kimia Vol 7, No 2 (2014): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v7i2.190

Abstract

ABSTRACTThis study aimed to explore the optimization of the concentration of oil palm trunks andthermostable amylase enzyme preformance produce highest sugar (glucose total and reducingsugars) as well as the degree of polymerization. The design used in this study was a completelyrandomized design (CRD) factorial using 2 factors: factor A which consists of four levels ofamylase enzyme that A1: 250 units / kg, A2: 500 units / kg, A3: 750 units / kg and A4: 1000 units/ kg. Factor B is the concentration of oil palm trunk yitu B1: 20% (200 g / 1 liter) B2: 40% (400g / 1 liter) and B3: 60% (600 g / 1 liter) were repeated 3 times. The results showed that there is ahighly significant interaction (P <0.01) in the levels of amylase enzyme (factor A) with theconcentration of oil palm trunks (factor B) on reducing sugar, siqnificantly interaction (P <0.05)on total sugars and degree of polymerization (DP) . This research can be concluded that the besttreatment at a concentration of 60% oil palm trunks and levels 250 unit/kg of an enzymeconcentration that produces of total sugars 7.86 mg/ml, reducing sugar 15.69 mg /ml and degreeof polymerization 0.50Keywords : amilase, total gula, gula pereduksi, derajat polimerisasi.
Co-Authors -, Emdeniz -, Rahmayeni -, Rianda -, Yulfitrin . Darwison . Syukri Abdi Dharma Abral, Hairul Ade saputra Ade Saputra Adlis Santoni Admi Admin Alief Admin Alif Admin Alif Admin Alif Admin Alif Admin Alif Ahmad Hafizullah Ritonga Aju Deska Alif, Admin Alif, Admin Alif, Admin Amelia Amir Anggresani, Lia Anwar Kasim Ariadi Hazmi Aritonang, Barita Astuti Astuti Aulia Arivin Billah Aulia Aulia Baharuddin Shaleh Boy Isfa Boy isfa Budi Hermawan BUSTANUL ARIFIN Denny Akbar Tanjung Denny Akbar Tanjung Desfitri, Erda Rahmilaila Deswati Deswati Devi Pebrina Eka Putra Waldi Ellyta Sari Emdeniz - Emriadi - Erda Rahmilaila Desfitri Evi Adhelina Fatiha, Widya Yuliani Fitri, Ernarisa Hamdi, Hayatul Hary Sanjaya Hayatul Hamdi Herlin Oktavani Hermansyah Aziz Hermawan, Budi ihda khaira Kazuhiro Manseki Khoirul Amru Kusuma, Theresia Sita Lestari Ningsih Lia Anggresani Lisa Utami Lisa Utami Lusi Puspitasari M. H. Ahmad Mahardika, Melbi Mai Efdi Mai Efdi Maria Erna Maria Erna Maria Erna Kustyawati Matlal Fajri Alif Melbi Mahardika Mirzah Mirzah Mochamad Asrofi Mohd Hafizi Ahmad Mohd Jain Noordin Muhammad Rizki Mulyati Sukma Naldi, Nofri Nancy Willian Nengsih, Zarnida Widia Neswati Neswati Nofri Naldi Novesar Jamarun Novesar Jamarun Novizar Nazir Oktavani, Herlin Olly Norita Tetra Putri Perdana Roza Radiatun Mardiah Rahadian Zainul Rahayu Rahayu Reni Desmiarti Reni Desmiarti Restina Bemis Restina Bemis, Restina Rianda - Rianda Rizal Rini Ramadhani Risma Sari Rosadi, Maulana Yusup Roza, Putri Perdana Rudy Fernandez Safni Safni Selfa Dewati Samah Sestry Misfadhila Shaleh, Baharuddin Sry Wahyuni Suarnikan Hulu Suci Auliya Rahmi Elsya Sumaryati Syukur Suryati Suryati Syukri Syukri Syukri Takashi Sugiura Theresia Sita Kusuma Upita Septiani Upita Septiani Usna, Sri Rahayu Alfitri Widya Yuliani Fatiha Yeni Stiadi Yessi Rahmayani Yestria Rilda Yetria Rilda Yetti Marlida Yulfitrin - Yulidar Laila Safitri Yulizar Yusuf Yurniwati Yurniwati Zilfa Zilfa Zulhadjri Zulhadjri