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INDONESIA
IJCR (Indonesian Journal of Chemical Research)
Published by Universitas Islam Indonesia
ISSN : 23549610     EISSN : 26145081     DOI : 10.20885
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology
IJCR is intended to be the journal for publishing articles reporting the results of research on Chemistry field with related topics, as well as with their development through interdisciplinary and multidisciplinary approach. The types of articles published in this journal include research articles, review articles and short communication. This journal covers some topics include: Inorganic Chemistry Physical Chemistry Computational Chemistry Biochemistry Analytical Chemistry Organic Chemistry Food and Medicinal Chemistry Environmental Chemistry Material Chemistry
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 7 Documents
 1 
Search results for , issue "VOLUME 2, ISSUE 1-2, 2017" : 7 Documents clear
Modifikasi Zeolit Dengan Tembaga (Cu) Dan Uji Sifat Katalitiknya Pada Reaksi Esterifikasi Orien Claudia Handayani Arjek; Is Fatimah
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) VOLUME 2, ISSUE 1-2, 2017
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.799 KB) | DOI: 10.20885/ijcr.vol2.iss1.art3

Abstract

Zeolite modification with Cu has been conducted. Material modification is done by impregnating Cu through a zeolite powder reflux process with CuSO4.5H2O solution so that theoretical Cu concentration is 5% followed by oxidation and reduction of solids. Material characterization was performed by x-ray diffraction analysis (XRD), Fourier Transform Infra-Red (FTIR) and acidity testing of Cu/Zeolite catalyst.The results showed that the crystallinity level of Cu/Zeolite did not change significantly when compared with natural zeolite. Changes occur at the intensity of the resulting peak, as at the peak of 2θ 27.826 º which is the mordenite phase in Cu-zeolite has a peak intensity of 1360, while at zeolite with peak of 2θ 27,760 º with the same phase meliki the smaller intensity of 1048. Testing the acidity of the catalyst was carried out by adsorbing pyridine into the catalyst, then calculating the adsorbed pyridine level, in the zeolite samples of pyridine adsorbed by 0.003 g / g while in the Cu-zeolite sample of 1.0574 g / g. The result of analysis with FTIR to show acidity level is seen in the range of wave number between 1450-1495 cm-1, from zeolite catalyst with wave number 1491,17 cm-1 peak intensity (% T) equal to 6,53, while at Cu-zeolite with wave number 1468.05 cm-1 peak intensity (% T) of 10.99. Testing of catalytic properties of Cu-zeolite catalyst on esterification reaction was done by taking acetic acid with concentration of 0.05 mol and methanol with concentration of 0.1 mol, then added 0.2 gram of catalyst, then reflux process for 1 hour. The results of reflux in the form of methyl esters were then analyzed by gas chromatography to see the retention time and the area of the resulting area. The use of Cu-zeolite catalysts yielding ester is indicated by the appearance of the ester peak.
Molecular Modeling of An Analog Of Curcumin Compounds Pentagamavunon-0 (PGV-0) And Pentagamavunon-1 (PGV-1) Through Computational Chemistry Methods Ab-Initio HF/4-31G Nurcahyo Iman Prakoso; Lukman Hakim; Nuri Hidayati
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) VOLUME 2, ISSUE 1-2, 2017
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1474.984 KB) | DOI: 10.20885/ijcr.vol2.iss1.art4

Abstract

Breast cancer is the second largest number of cancer cases in Indonesia, after cervical cancer. The growth of these cancer cells can be prevented with compounds Pentagamavunon-0 (PGV-0) and Pentagamavunon-1 (PGV-1). This compound is an analog of curcumin compounds that have anti breast cancer activity. Modeling the structure of compound PGV-0 and PGV-1 through computational chemistry methods Ab-initio HF/4-31G could be used to predict the geometry and structure elucidation spectra associated with pharmacological activity such as anticancer compounds theoretically.This research involves modeling the structures and spectra prediction calculation compounds PGV-0 and PGV-1 by computational chemistry methods Ab-initio HF/4-31G, using Gaussian03W. The result using Ab-initio HF/4-31G method then compared with data from experimental geometry and the results of calculations with AM1.The results showed that computational chemistry methods Ab-initio HF/4-31G calculations give better results for modeling the structure compared semiempirik method AM1.
Analisis Penurunan Kadar Cr, Cd DAN Pb Limbah Laboratorium Dasar PPSDM Migas Cepu Dengan Adsorpsi Serbuk Eceng Gondok (Eichornia crassipes) Rivaldo Herianto; M.Arsyik Kurniawan
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) VOLUME 2, ISSUE 1-2, 2017
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (221.929 KB) | DOI: 10.20885/ijcr.vol2.art1.art5

Abstract

Beragam bahan kimia berbahaya digunakan dalam kegiatan di laboratorium. limbah laboratorium memiliki kekhususan sebab biasanya jumlah limbah tidak banyak namun memiliki keragaman yang sangat tinggi. Jenis bahan yang digunakan dapat berubah dari waktu ke waktu bergantung aktivitas dalam laboratorium tersebut. Telah dilakukan penelitian tentang pengolahan penurunan kadar limbah laboratorium dasar PPSDM CEPU dengan menggunakan serbuk eceng gondok. Penelitian ini bertujuan untuk mendapatkan dosis dengan variasi dosis serbuk eceng gondok (Eichornia crassipes) yang tepat dalam proses pengolahan penurunan kadar limbah lab. Parameter uji yang diamati adalah Cd, Cr dan Pb dengan menggunakan metode analisis AAS. Hasil penelitian menunjukkan bahwa efektifitas penurunan kadar konsentrasi limbah labolatorium dasar PPSDM CEPU  pada dosis serbuk 0,45 gram.
Adsorption Isotherm Studies of Rhodamine B on Citrus sinesis Peel Gani Purwiandono; Puji Lestari; Wahyu Widodo; Marlina Marlina; Nadia Aprilia
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) VOLUME 2, ISSUE 1-2, 2017
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (203.184 KB) | DOI: 10.20885/ijcr.vol2.iss1.art6

Abstract

Adsorption of Rhodamine B on Citrus sinesis peel biosorbent has been conducted. The adsorption process was carried out in neutral pH for 90 min. The active surface of the Citrus sinesis peel biosorbent was 15 m2/g and the density was 0.52 g/cm3. The adsorption mechanism of Rhodamine B on Citrus sinesis peel biosorbent was studied using 4 adsorption model; Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich. The adsorption fitted the Freundlich model with the regression value of 0.906. This indicates that the adsorption of Rhodamine B on the surface of Citrus sinesis peel biosorbent was a multilayer interaction.
Preparation of TiO2¬ Bamboo Leaves Ash Composite as Photocatalyst for Dye Photodegradation Prihatiningsih Prihatiningsih; Lita Dewi Pertiwi; Is Fatimah
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) VOLUME 2, ISSUE 1-2, 2017
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.482 KB) | DOI: 10.20885/ijcr.vol2.iss1.art1

Abstract

Textile waste containing dye can generate environmental problems especially for human. Therefore some techniques are developed to overcome the impact of toxic contaminant from dyes residue, one of these is the photocatalysis technique. The photocatalysis mechanism TiO2 is a popular photocatalyst and in order to improve its activity the composite formation with a some solid support are attempted. The development of TiO2 composite with a sustainable support source; bamboo leaves was conducted. The composite was prepared by dispersing titanium isopropoxide into bamboo leaves ash (BLA) followed by calcination process. Hysicochemical characterization of the photocatalyst was performed by using XRD, gas sorption analyzer and SEM-EDX analysis. By the characterization it is found that BLA contains silica in highest percentage and furthermore TiO2 in the mixed anatase and rutile phases were formed the composite.
Metal Oxide and Metal Complex Immobilization Modified Smectite Clay For Green Catalysis and Photo-Catalysis Applications: A Mini Review Is Fatimah
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) VOLUME 2, ISSUE 1-2, 2017
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.556 KB) | DOI: 10.20885/ijcr.vol2.iss1.art7

Abstract

Clay minerals are promising modifiable material for catalysis application. Fit to green chemistry issue, green catalysis based on clay minerals modification has been designed in our research group. Metal oxide and metal complexes modification onto natural and synthetic smectite clay via pillarization and intercalation processes and its application as green catalyst have been investigated.  This paper presents the study on preparation of Ni, Zr and Pt  insertion on smectite clay structure for green conversion of citronellal to menthol via catalytic hydrogen transfer mechanism and Ru-complex modified smectite clay as novel photocatalysis application.  Effect of clay structure modification was also studied in order to investigate the  relationship between physicochemical characteristic change of material modifications and its catalytic/photo-catalytic activity. Some interesting phenomena related to the interaction of metal-clay support for their performance toward reaction kinetics and mechanism are reviewed, with emphasis on the evolution of surface properties and some factors affecting catalytic/photo-catalytic activity
Biochemical Test and Isolation of Antimicrobial Activity From Seeds Starfruit Extract (Averrhoa carambola.L) Habibi Hidayat Hidayat
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) VOLUME 2, ISSUE 1-2, 2017
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.981 KB) | DOI: 10.20885/ijcr.vol2.iss1.art2

Abstract

Telah dilakukan penelitian tentang uji biokimia dan aktivitas antimikroba dari isolasi ekstrak biji buah belimbing (Averrhoa  carambola.L). Penelitian ini bertujuan untuk mengetahui bagaimana uji biokimia dan aktivitas antimikroba, serta proses isolasi dari ekstrak biji buah Belimbing (Averrhoa  carambola.L).Dari hasil penelitian yang telah dilakukan diperoleh hasil untuk sampel ekstrak biji buah Belimbing (Averrhoa  carambola.L) yaitu BB 36 dan BB 48 memiliki jumlah koloni yaitu 110. 107 cfu/ml dan 126. 107 cfu/ml. Sehingga dapat digunakan sebagai bahan pangan untuk probiotik. Sampel BB 36 dan BB 48 memiliki bentuk morfologi seperti basil (batang) dan merupakan jenis bakteri Gram positif. sampel BB 36 dan BB 48 memiliki resistensi terhadap asam yang cukup baik karena dapat hidup pada pH 2.0 - 6.0. untuk uji aktivitas antimikroba dari sampel BB 36 memiliki zona bening yang lebih luas yaitu pada hari pertama sampai ketiga terus meningkat yaitu sebesar 12 mm, 14 mm dan 16 mm. Sedangkan sampel BB 48 memiliki zona bening yang cukup baik jika dibandingkan dengan antibiotik ampisilin yaitu sebesar 10 mm, 12 mm dan 14 mm.

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