IC CS 2013For the year 2013, ICICS 2013 is hosted by Department of Chemistry, Faculty of Mathematics...
Transcript of IC CS 2013For the year 2013, ICICS 2013 is hosted by Department of Chemistry, Faculty of Mathematics...
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The 2" International Conference of the Indonesian Chemical Society 20I3
IC - C S 2013 Research in Chemistry for Better Quality of environmental Universitas Islam Indonesia,Yogyakarta, Indonesia October, 22 - 23* 2013 Abdul Kahar Muzakkir. Conference Hall Universitas Islam Indonesia (Ull),Yogyakarta. KampusTerpaduJI. Kaliurang KM 14,5 Sleman,Yogyakarta.
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TIM 2 IntafiKiUoiMl ConfMoncc of tho Indonosfon Chomicol Sodoty 2013 Octobor, 22-23*̂ 20I3
Preface The international conference is an annual conference of the Indonesian Chemical Society (Himpunan Kimia Indonesia, HKI). In the year 2013, the mandate of the organizing committee was given to the HKI Yogyakarta branch and also supported by Department of Chemistry of Universitas Negeri Yogyakarta (UNY), Department of Chemistry of Universitas Gadjah Mada (UGM), Department of Chemistry of Universitas Islam Negeri Sunan Kalijaga (UIN Suka), National Nuclear Energy Agency (BATAN Yogyakarta), and Volcano Investigation and Technological Development Center (BPPTK Yogyakarta). For the year 2013, ICICS 2013 is hosted by Department of Chemistry, Faculty of Mathematics and Natural Sciences, Islamic University of Indonesia, Yogyakarta from October 22 - 23, 2013. This conference was also prepared to celebrate 70th anniversary of Universitas Islam Indonesia.
The Sicentific Programme of ICICS2013 comprises the following:
2. Invited Speaker 11 papers A total 256 paper for parallels sessions
a. Organic Chemistry 32 papers b. Inorganic Chemistry 43 papers c. Physical Chemistry 37 papers d. Analytical Chemistry 68 papers e. Education Chemistry 23 papers f. Biochemistry 43 papers
The breakdown of the presentation is as follows: Session Oral Poster Total Invited Speaker 11 0 11 Organic Chemistry 25 7 32 Inorganic Chemistry 38 5 43 Physical Chemistry 31 6 37 Analytical Chemistry 61 7 68 Education Chemistry 22 1 23 Biochemistry 34 8 43 Total 222 34 256
YogyWcarta, 25* November 2013
l c j l . C S 2 0 1 3 Editors
ISBN: 978-979-96595-4-5 ii
http://lcjl.CS
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Th« 2"̂ Intemationcil CoirfarMice of tho Indonosian Chemical Sodoty 2013 October, 22-23*^2013
Welcoming Address by The Organizing Committee
Honorable Rector of Universitas Islam Indonesia The distinguished invited speakers, and All participants of the ICICS 2013
Assalamu'alaikum Wr. Wb»
Welcome you at the 2^*^ International Conference of the Indonesia Chemical Society 2013 (ICICS 2013] this morning here at the Auditorium Kahar Muzakkir Universitas Islam Indonesia, Yogyakarta. The international conference is an annual conference of the Indonesian Chemical Society (Himpunan Kimia Indonesia, HKI). In the year 2013, the mandate of the organizing committee was given to the HKI Yogyakarta branch and also supported by Department of Chemistry of Universitas Negeri Yogyakarta (UNY), Department of Chemistry of Universitas Gadjah Mada (UGM), Department of Chemistry of Universitas Islam Negeri Sunan Kalijaga (UIN Suka], National Nuclear Energy Agency (SATAN Yogyakarta], and Salai Penyelidikan dan Pengembangan Kegunungapian (BPPTK Yogyakarta]. For the year 2013, the honor of hosting ICICS 2013 has been given to the Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Yogyakarta. This conference was also prepared to celebrate 70th anniversary of Universitas Islam Indonesia. The conference comprises both oral and poster presentation in English and Indonesian with optional post conference publication of full papers in English in the Procedia Chemistry (Elsevier, ISSN: 1876-6196] and Proceeding Conference for Indonesian language. There are 211 papers presented orally and 34 papers presented by poster covering wide-variety subjects of chemistry. We invited 6 Indonesian invited speakers, 2 Japan invited speakers, 1 Australian invited speakers, 1 Saudi Arabia invited speakers, and 1 Malaysian Invited speakers. We hope you will enjoy a pleasant and valuable seminar at Universitas Islam Indonesia
Wassalamu'alaikum Wr. Wb.
ISBN: 978-979-96595-4-5 iii
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[PI?®(§@@co]9D=Q© V I «nd u I # • < K aJ TIM 2 Intmnotionol Confarcnctt of tho Indonosloii Choinkal Sodoty 2 0 1 3 Octobor, 22-23*^ 2 0 1 3
C O N T E N T
Content Paste
i 1 Preface Ii
Welcoming addres by The Organizing Committee ill
Opening Speech from the Rector of Universitas Islam Indonesia iv
Remarks by the Chairman of the Indonesian Chemical Society (Himpunan Kimia Indonesia, HKI)
V
Cpmmltte vi
Reviewers and Editors vl
Content Ik Invited Speaker
Shaohin Wang, Stacey indrawlrawan, Yunjin Yao, Hongqi Sun
Graphene Supported Oxide Systems for Catalytic Oxidation of Organic Compounds In Aqueous Solution for Water Treatment xii
TatsufumI Okino Chemistry and biology of bromlnated compounds from marine algae Laurencia spp. XV
Heriyanto, Leenawaty Umantara Chlorophyll and Carotenold Prospects on Food, Health and Energy xvlll
Katsumi Kaneko Molecular Functions of 1 nm-Scale Pore Spaces and their Application Potential to Sustainable Technologies xxvlll
Fethi Kooll
Ali3 Intercalated and Pillared Montmorlllontes from Unusual Antipersplrant Aqueous Solutions: Precursors for Porous Clay Heterostructures and Heptane Hydro-lsomerlzatlon Catalytic Activities
xxxi
Allwar, Ahmad Md. Noor, Mohd Asri bin Mohd Nawi
Characterizing MIcroporous Structures using Nitrogen Adsorptlon-Desorptlon Isotherm for Activated Carbon Prepared with Different Zinc Chloride Concentrations
XXXV
Papers of Inorganic Chemistry
Ahmad BudI Junaidi, Helda RahmawatI dan Utami irawati
Study of Carboxymethyl Chltosan Synthesis : Effect of NaOH Concentration and Rtio Chltosan/Monochloro Acetic Acid Toword On The Substitution Degree and Solubility In Water
1-5
Ahmad Suseno, Priyono, Kama WiJaya,Wega Trisunaryanti
Study of Structure and Morphology of Surfactant-Modified Al-plllared Natural Bentonlte 6-14
Aman Sentosa Panggahean, Suhur P. Pasarihu, Dadan Hamdani, Nadira^
Synthesis of A Chelating Resin Chltosan-l,5-Dlphenyl Carbazlde and Characterization of Retention toward Cr(VI) Ions 15-25
Anti K. Prodjosantese Preparation and Characterisation of Chloride-Free Palladium Catalysts
26-32
ISBN: 978-979-96595-4-5 ix
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;p^[?®(S®@C2]BDT]g) TIM 2"' Intematienai Conforenca of tho indoiMSkin Chomkal Sodoty 2 0 1 3 Odobor, 22-23*^ 2 0 1 3
Dwi Rasy MuJiyantI, Totok Wiantoi, M. Fahmi Arif
Synthesis and Characterization of Nanosilica from Rice Husk Ash by Sol-Gel Process
33-38
Endang Susiipwati, Triypnp, Sri Juari Santosa, Indriana Kartini
Synthesis of Silver-Chltosan Nanocomppsltes by Glucose As Reducing Agent and Their Antibacterial Activity
39-47
Febriyana Rizky Hapsari, Ersalina Nidianti, Warsito, Edi Priyo Utomo
Analysis In SIIIco on Stucture-Odor Relationship (SOR) Of t j r g a n u i c p i i t 1 caicu wornpounub
48-SS
Indah Uswatun Hasanah, Ria Armunamo, DaniDang aenaaji
The Oretlcal Study Properties of Semiconductor Metalloporphyrin complexes caicuiaieo uensriy runciionai i neory ivieinoo \ur i j
S6-66
Jannatin 'Ardhuha Characterization of The FePd/NITI Shape Memory Alloy Film for Sensor Applications
67-76
Ua Destiaitl. Nellv wanvuni. Ahmad YanI
^yninesis or zeoiiie a rrom Lapxaia ivaoiin oy varying Mass or Alumunlum Oxide: XRD spectrum and CEC number of products
77-82
Mauia EKa snyania, Aang Hanafiah W.S.
Physlcochemical Characteristics of ^"Tc-dtpa-ketoconazole as A Radiopharmaceutical for Deep Seated Fungal Detection
83-89
AA.«kABMA.J D « » S * C A W V I A M
Munamad nasit raiMian, Aminudin Sulaeman, Muhayatun Santoso
rreiiminary atuay or wompanson or tUAnr ana iwr-Ata lecnniques for the Measurement of Elements In Fine Particulate Matter (PM2.S) : Accuracy and Precision of XRF Technique
90-94
Muhdarina, Nurhayati, Flora Sijabat
Characterization of Phosphated Palas Clay 95-100
Nugrahanlng Wuri Hakiki, Maria Oiristina P., Isti Daruwati
Ppnandaan M415-NH.1 dpnsan Radionuklida Tpknpslum-qqm ' Perbandingan Metode Langsung dengan Metode TIdak Langsung Halam Aniikaci RaHincinnvpktomi uaiaiii f̂ |jiif\a«ii nauiwdiiiwvwivwiiii
101-111
Nurul HidayatI Fithriyah, Erdawati
Preservation of Paper Samples Coated With Chltosan Nanopartlcle 112-120
rUTu oUKmaDuana, roppy inxan TJahaja, and Anton Winarko
A Cim,AllAn/.A A A TTltiiiin D A / H A A I I / * I S / I A In Ciirf9/*A C A I I A ^ TkA T D I ^ A
A ourveiience on i riiium rvaoionuciioe in durrace ^oii or i ne i k i u a 2000 Reactor Site, Bandung
121-128
Ria Armunanto*, Kama Wljaya, Radlte Yogaswara
Study of CO Adsorption on Nln*'(n=3-S; q=0,1, -1) Clusters using DFT Method
17a 17Q
Rp$tMk?rtlkoWM!,Arief Budhyantoro, Emma Savitri
Reaction Study of Phenol Hydroxylatlon on Al/Fe Pillared and HDTMA Intercalated Bentonlte Catalyst
140-146
Sinffffih Hartanto Achmadin nai Mili&w, I I I •will
Luthfi, Sri Handayani
Characterizatian of Membrane P\/A/Sllica and PV/A/Zeollte for Purification Bloethanol by The Vapor Permeation Process.
147-152
Triastuti Sullstyanlngsih, Sri Juari Santosa, Dwi SIswanta, Bambang Rusdiarso
Hydrothermal Efek on Magnetlte-Mg/AI-NOa-HT Composite Synthesis
153-160
Tutik Setianingsih, Indriana Kartini, Yateman Arryanto
Synthesis of Mesoporous Carbon from Fructose by using Activator of Zinc Boroslllcate at Low Temperature
161-172
Unda Dwitasari. Tutik Dwi Wahyunlngsih, Indriana Kartlnl
HOMO and LUMO Determination of Chlorophyllln and Xanthophyll Dyes using Cyclic Voltammetry
173-178
Emi Astuti. Yateman Arrvanto. Indriana Kartini
Facile Hydrothermal Synthesis of Various Nanostructured TItanIa 179-184
ISBN: 978-979-96595-4-5 X
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TIM 2"^ International Conforonco of Iho indonosian Chomical Sodoty 2 0 I 3 Octobor, 22-23*^ 2 0 1 3
Arief Rahmatulloh, Lukman Atmaja, Nurul Widiastuti
Korelasi Konsentrasi Silane dan Suhu Operas! Terhadap Konduktivitas Membran Komposit KItosan - Fly Ash untuk Aplikasi Proton Exchange Membrane Fuel Cell
18S-19S
Paulina Taba, Marthinus Pongsendana, Eldayanti Ruru
Thiol-Functionalized Mesoporous Silica, MCM-48 as Adsorbent Ag(l) and Cd(ll) Ions
196-201
F. WidhI Mahatmanti. Nurvono. Narsito
Synthesis of Chltosan-SIIIca Film using Sodium Silicate Solution from Rice Hull Ash
202-206
Maria Dewi Astuti, Dwi Rasy MuJIyanti, Dahlena Ariyani, Mustika Rahmadlnl
Perbandingan SIfat Karakterlstik Slllka Gel SIntesIs darl Abu Sekam Pad! Daerah Gambut dan Komerslal
207-212
Husna Amalya Melati Corrosion Protection Efficiency of Hybrid Polymers Coatings based TMSPMA Monomers on Carbon Steel In Saline Environment Evaluated by EieetFoehemlEai Measurements
213-219
ISBN: 978-979-96595-4-5 xi
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[^[?(£X§@©(o]0D\]© Tha 2*̂ IntemoUonol Conffnct of the Indonosian Chomkal Sodoty 2013 Octebor, 22-23**' 2013
Hydrothermal Effects on Magnetite-Mg/Al-NOj-HT Composite Synthesis Triastuti Sulistyaningsih', Sri Juari Santosa^, Ehvi Siswanta^, Bambang Rusdiarso^
'Doctoral Pro-am, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia.
^ Department of Chemistry, Facvdty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia,
e-mail: [email protected]
Abstract Magnetite-Mg/Al-NOs-HT composite has been successfully synthesized using co-precipitation
method with hydrothermal treatment. The synthesized composite was characterized by the Fourier Transform Infrared Spectroscopy (FTIR), the X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), and Vibrating Sample Magnetometer (VSM). Crystallinity, the specific surface area and saturation magnetization of the composites increased with hydrothermal treatment. Key words: Magnetite-Mg/Al-NOj-HT, composite, hydrothermal, crystallinity Introductioii
Mg/Al hydrotalcite (Mg/Al HT) also known as the Mg/Al Layered Double hydroxides (Mg/Al LDHs) [l]-[3] is one of the attractive and prospective mineral rarely can be found in nature, but can be easily synthesized through co-precipitation method [2]. Both natural and synthetic, a similar compound hydrotalcite (hydrotalcite-like) have general formula [M^^i. M^iOH)!^^ [A°*x/n.mH20]''", where M^^ is a divalent metal such as Mg, Ni, Zn, Cu and M^^ is a trivalent metal such as Al, Ga, Cr, Fe and A^ is an anion of n valence (CQs^", OH', c r , S04^ ) and x value between 0.17 to 0.33 [4]. These Mg/Al HTLc compounds are useful in various applications as well as a potential material for cleanup and environmental remediation [5].
Iron oxide nanoparticles can be modified with functional groups or inorganic compounds to obtain magnetic adsorbent, which is promising as an adsorbent to remove pollutants in the environmental targets through their special affinity for the target pollutants [6]. Therefore, an inorganic magnetic composite consist of iron oxide nanoparticles and hydrotalcite has been synthesized. The most common method applied to preparation of magnetic hydrotalcite composite is coprecipitation. In many cases, an optimization of experimental conditions does not produce to a great crystallized composite phase. An improvement of the crystallinity may be achieved by hydrothermal treatment in the presence of water vapour at temperatures which do not exceed the decomposition temperature of the hydrotalcite-like compound. The hydrothermal crystallization is usually carried out at temperatures up to 200 °C under
ISBN: 978-979-96595-4-5 153
mailto:[email protected]
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Pl?@(g@©(°]Q[jD@ TIM 2"' liilwiiotlonol Conforam of tiM IndoiMSloii ChMnlcol Sodoty 20I3 Octobor, 22-23*** 2013
pressure for a time rangmg from hours to days [7]. Therefore, in this research an inorganic magnetic composite consist of magnetite and Mg/Al-NOa-HT has been synthesized through a chemical co>precipitation method with both hydrothermal and without hydrothermal treatment and its characteristic is reported. Materials and Methods Reagents
Analytical grade FeS04-7H20, FeClrbHzO, Mg(N03)2-6H20, A1(N03)3-9H20, NH3 H2O (25%, w/w), NaOH, and HCl were purchased from Merck (Germany). Deionized decarbonated water was used for preparation of the solution and for rinsing the product. Synthesized of magnetite, Fe304
FeCl3-6H20 and FeS04'7H20 (molar ratio Fe^^:Fe^^ = 1.5:1) were dissolved in 25 ml distilled water. A NH4OH (3,5 M) solution was added dropwise into the mixed Fe^^/Fe2^ solution at 50°C under stirring to increase pH until 11. After 3 h aging, the products were collected by external magnet, washed with distilled water to neutral pH and then dried at 60 °C to obtain magnetite nanoparticles. Synthesis ofmagnetite-Mg/Al-NOs-HT
The Fe304 powder (0.65 g) was redispersed in distilled water (50 mL). Mg(N03)2-6H20 (12.8 g, 0.05 mol) and A1(N03)3-9H20 (9.4 g, 0.025 mol) with Mg^VAl^^ molar ratio of 2.0 was dissolved in 100 mL distilled water, and NaOH (6.6 g, 0.165 mol) were dissolved in 100 mL distilled water. The two solutions were added dropwise into the Fe304 dispersion at 55 °C for 1 h under atmospheric nitrogen. After 12 h for aging, the products was hydrothermally treated at 120 for 5 h (nonhydrothermal magnetic Mg/Al-NOa-HT not going through this process) and then separated, washed with carbonate-free distilled water, until to neutral pH and then dried to obtain hydrothermal magnetite-Mg/Al-NOa-HT (MHT-H) and nonhydrothermal magnetite-Mg/Al-N03-HT (MHT-NH). Characterization of Materials
FTIR spectra were recorded using a Shimadzu FTIR-820 IPC in the transmission mode in spectroscopic grade KBr pellets for all the powders. XRD patterns of samples were recorded using a Shimadzu XRD-6000 diffractometer with Ni-filtered Cu Ka radiation (X= 0.15406 nm) at voltage 40 kV and current 30 mA. The sample was scanned in steps of 0.02*' (26) in the range from 0 to 70° with a count time of 4 s per step. The morphology of samples was viewed by scanning electron microscopy (SEM) using a JSM-6360 instrument.
ISBN: 978-979-96595-4-5 154
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[p[?®(3©©(o]B[7D© TIM 2** Intemottonal Conftrcnct of tlM IndoiMfkm CiMmlcal Sodoty 2 0 1 3 Octobor, 22-23*** 2 0 B
Brunauer-Emmett-Teller (BET) surface area was determined by nitrogen adsorption/desorption, by using a Quantachrome Instruments version 11.0. The magnetic properties of the as-synthesized nanopowder were analyzed by Vibrating Sample Magnetometer (VSM) tipe OXFORD VSM 1.2H.
Result and Discussion Characterization of Magnetite
The result of magnetite particles eharaeterization is shown in Fig. 1. FTIR analysis for magnetite is used to identify the functional groups and purity of magnetite. The magnetite was synthesized with molar ratio Fe^^:Fe^^^ 1:1.5. According to FTIR result, the characteristic absorption band at 586.36 cm'^ which indicates stretching vibration of Fe-O bond (Fig. lA). Additionally, peaks at 1627.92 and 3402.43 cm"^ can be attributed to the stretching vibration of the hydroxyl groups on the surface of the magnetite nanoparticles [8]. It can be indicated that Fe(OH)2, Fe(OH)3 and FeOOH formed resulting from hydroxylation on the surface of magnetite [9]. Since the absorption peak at wave number region 3402.43 cm'^ is weak indicates that the crystallization of magnetite completed [10].
10 a » 40 50 eo 70 2Ma(deg)
10QQQ
Applied Field (Oe)
Fig. 1(A) FTIR Spectra, (B) XRD patterns, (C) SEM image, and (D) Hysteresis curve of magnetite
ISBN: 978-979-96595-4-5 155
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Fig. 2 (A) FTIR Spectra of MHT-H and MHT-NH, (B) XRD patterns of MHT-H and MHT-NH, SEM image of (C) MHT-H and (D) MHT-NH
Based on the results of XRD pattern (Fig. 2B) for MHT-H and MHT-NH composite the peaks appear at 2theta: 11.17°, 22.62°, 35.39°, and 62.67°. The characteristic peaks of both MHT-H and MHT-NH composites indicate that both of them have a layered structure with basal spacing 7.91 A and 8.03 A which indicated NO3' anion in interlayer [18]. The peak of Mg/Al^NOa^HT which correspond to the basal spacing (009) is divided into two sub^ peaks. Basal spacing (d) value can be seen on Table 1. The first one at a smaller diffraction angle shows the peak for hydrotalcite, whereas the second one at a slightly greater diffraction angle come from the magnetite particle core, on the surface of which the hydrotalcite are deposited [6]. The peaks of MHT-H sharper than MHT-NH which indicated MHT with hydrothermal treatment has better crystallinity than without hydrothermal.
Sample d(003) (A) d(006) (A) d(009) (A)
MHT-NH 8,03 3,93 2,58 and 2,52 MHT-H 7.91 3.94 2.60 and 2.53
The SEM images of MHT-H and MHT-NH composites reveals the differences between them (Fig. 2C and Fig. 2D). On MHT-H, the surface of hydrotalcite were covered by
ISBN: 978-979-96595-4-5 157
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TIM 2 Intemcrtlonal Confcrancc off tho Indonoilon Choiiilccri Sodo^ 2013 Octobor, 22-23* 2013
magnetite particles and appears dispersed evenly, while on MHT-NH, no obvious naagnetite particles on the surface hydrotalcite.
MHT-H composite has a BET specific surface area of 67.734 mVg, larger than MHT-NH composite (1.397 mVg). This suggests that the hydrothermal treatment can greatly expand the surface area of the material. Furthermore, the hydrothermal treatment also has significantly affects to the pore volume (Vp) and pore diameter (Dp) (see Table 2). It is presumption which with hydrothermal treatment could open the hydrotalcite pores and magnetite particles dispersed evenly on the surface hydrotalcite. While without hydrothermal treatment, is predicted that the magnetite particles enter to MHT-NH composite pores and covers it. Consequenly the pores diameter decreased. The pore size distribution of both MHT-H and MHT-NH show that large mesopores (2-30 nm) formed (Fig. 3).
Table 2: Textural Properties of Material Determined of BET „ , SBET , 7 . 3/ X Dp (nm) BJH S^P^^ (m^/g) ^ P < ^ ^ g > Method
MHT-NH MHT-H
1.397 67.734
0.007 0.340
14.25 21.73
MHT-H
80 20 .,40 ,60 , pore diameter (nm) ^redialtl^er(nfiQ Fig. 3 Pore size distribution of MHT-H and MHT-NH
80
10000
ApplMFNMlOa) AM««41Md(0»i
Fig. 4 Hysteresis loop of (A) MHT-H; and (B) MHT-NH
ISBN: 978-979-96595-4-5 158
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The 2**' IntefiratioiMl Conference off the Indonesion CheniicQl Society 2 0 1 3 October, 2 2 - 2 3 * 2 0 I 3
Fig. 4 shows the hysteresis loops of MHT-H and MHT-NH composites at room temperature. It is clear from the figure that no hysteresis. The saturation magnetization (M,) of the MHT-H and MHT-NH are 13.47 and 4.88 emu/g, respectively. Those value were smaller than magnetite particles, however, hydrothermal treatment on MHT enhance greatly the saturation magnetization (Af,),
Conclusion Co-precipitation method can be used to generate magnetite with high crystallinity and
superparamagnetic properties. In addition, hydrothermal treatment for magnetite-MgAl/-NO3-HT composite synthesis enhances greatly the crystallinity, specific surface area and saturation magnetization value.
Acknowledgment The authors would like to thank Directorate General of Higher Education (DGHE),
Department of National Education Republic Indonesia for to support.
References [1]. Cavani, P., Trifiro, P., Vaccari, A.," Hydrotalcite-type anionic clays: preparation,
properties and applications", Catal. Today, 11, pp. 173-301, 1991, [2]. Zhu, M.X., Li, Y.P., Xie, M. and H.Z. Xin. "Sorption of an anionic dye by uncalcined
and layered double hydroxides: a case study". J. Hazard. Mater., 120, ppl63-171,2005. (3]. He, J., Wei, M., Li, B., Kang, Y., Evans, D.G. and X. Duan., "Preparation of layered
double hydroxides", Struct. Bond., 119, pp. 89-119,2006. [4]. Kloprogge, J.T., FrostJl.L. and Hickey, L. "FT-Raman and FT-IR spectroscopic study of
the local structure of synthetic Mg/Zn/Al-hydrotalcites". J Raman Spectrosc. 35, pp. 967-974,2004.
[5]. Crepaldi, E, L., Tronto, J., Cardoso, L. P. and J.B. Valim, "Sorption of terephthalate anions by calcined and imcalcined hydrotalcite-like compounds". Colloid and Surface A, 211, pp. 103-114,2002.
[6]. Chang Q., Zhu L., Luo Z., Lei M., Zhang S., Tang H., "Sono-assisted preparation of magnetic magneshim-aluminum layered double hydroxides and their application for removing fiuoride", Ultrason. Sonochem., 18, pp. 553-561,2011.
[7]. Kovanda, F., Kolou^ek, D., Cilovd, Z., Hulinsky, V., "Crystallization of synthetic hydrotalcite under hydrothermal conditions", Appl. Clay Set, 28. 101-109. 2005.
[8]. Petcharoen K., Sirivat A., "Synthesis and characterization of magnetite nanoparticles via the chemical co-precipitation method". Mater. Sci. Eng. B, 177, pp. 4 2 1 - 427,2012.
[9]. Lu W., Shen Y., Xie A., Zhang W., "Green synthesis and characterization of superparamagnetic Fe304 nanoparticles", J. Magn. Magn. Mater., 322, pp. 1828-1833, 2010.
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The 2"^ IntMnoUonol Conffmnct off tho Indonosian Chomkal Sodoty 2 0 1 3 Odobor, 2 2 - 2 3 * 2 0 I 3
[10]. Meng J., Yang G., Yan L., Wang X., " Synthesis and characterization of magnetic nanometer pigment Fe304", Dyes and Pigments, 66, pp. 109-113, 2005.
[11]. Wu, S., Sun, A., Zhai, F., Wang J., Xu, W., Zhang, Q. Volinsky, A. A., "Fe304 magnetic nanoparticles synthesis from tailings by ultrasonic chemical co-precipitation". Mater. Lett. 65: pp. 1882-1884. 2011.
[12]. Miyata S., "TTie syntheses of hydrotalcite-like compounds and their structure and physico-chemical properties. The systems Mg^'^-Al^-NOs", Mg^^-Al^-Cl", Mg^^-Al^-C104', NP-Al^^-Cr and Zn^^-Al^^-Cl ", Clays Clay Miner. 23, pp. 369-375,1975.
[13]. Pagano, M.A., Forano, C , Besse J.P., "Synthesis of Al-rich hydrotalcite-like compounds by using the urea hydrolysis reaction-control of size and morphology", J. Mater. CAem., 23, pp. 1988-1993,2003.
[14]. Kloprogge J.T., Hickey L., Frost R,L., "The effect of synthesis pH and hydrothermal treatment on formation of zinc aluminium hydrotalcites", J. Solid State Chem., 177, pp. 4047. 2004.
[15]. Ay A.N., Ziunreoglu-Karan B., Temel A., "Boron removal by hydrotalcite-like, carbonate-free Mg-Al-NOs-LDH and a rationale on the mechanism", Microp. Mesop. Mater., 98, pp. 1-5, 2007.
[16]. Frost R.L., Spratt H.J., Palmer S.J., "Infiured and near-infrared spectroscopic study of synthetic hydrotalcites with variable divalent/trivalent cationic ratios", Spectrochim. Acta A: Mol. Biomol. Spectrosc, 72, pp. 984-988, 2009.
[17]. Xiao L., Ma W., Han M., Cheng Z., "The influence of ferric iron in calcined nano-Mg/Al hydrotalcite on adsorption of Cr (VI) from aqueous solution", J. Hazard. Mater., 186, pp. 690-698,2010.
[18]. Kloprogge J.T., Wharton D., Hickey L., Frost R.L., "Infrared and Raman study of interlayer anions C03^~, NOa", S04^~ and C104~ in Mg/Al-hydrotalcite", Am. Mineral., 87, pp. 623-629,2002.
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