f

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.

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

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

[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

;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

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

[^[?(£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: triastuti.s@gmail.com

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:triastuti.s@gmail.com

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

[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

;̂ t?®

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

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

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.

ISBN: 978-979-96595-4-5 159

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.

ISBN: 978-979-96595-4-5 160