Adsorption of gold(III) on ionic imprinted amino-silica hybrid prepared from rice hull ash

Sakti, Satya Candra Wibawa; Siswanta, Dwi; Nuryono, Nuryono

doi:10.1351/pac-con-12-01-02

Cited by 23 publications

(20 citation statements)

References 42 publications

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“…While, SiO2 synthesized of petung bamboo ash with sol gel method. This method is adapted from [7]. The leaves of bamboo petung leaves are dissolved in 4 M NaOH in stop erlenmeyer.…”

Section: Experiments Proceduresmentioning

confidence: 99%

Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne)

Udaibah

Priyanto

2017

J. Nat. Scien. & Math. Res.

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<p style="text-align: justify;">The Research about Synthesis and Characterization of SiO2 have been worked. We have synthesized Silica from “petung”bamboo leaf ash as SiO2 source. This step used sol gel methode. SiO2 were characterized by Fourier Transform Infra Red (FTIR) to investigated the stucture andX-Ray Diffaction to know about structure and crystallinity. FTIR spectra show peak at 617,22 cm-1 area that spesific for Si-H bond, peak at 786,96 cm-1and 1095,57 cm-1 area specific for Si-O-Si bonds. Difractogram of SiO2 show that there are peak at 2θ 21,99; 31,67 and 38,88 were specific for SiO2 that calcinated at 800oC, while for SiO2 that calcinated at 400oC there were no peak at 2θ 31,67 dan 38,88. That peaks not shown may be because low crystallinity of SiO2 that calcinated at 400oC. Calcination temperature greatly affects the crystallinity of SiO2.©2017 JNSMR UIN Walisongo. All rights reserved.</p>

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“…While, SiO2 synthesized of petung bamboo ash with sol gel method. This method is adapted from [7]. The leaves of bamboo petung leaves are dissolved in 4 M NaOH in stop erlenmeyer.…”

Section: Experiments Proceduresmentioning

confidence: 99%

Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne)

Udaibah

Priyanto

2017

J. Nat. Scien. & Math. Res.

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“…The presence of propyl groups is indicated by bands at 1040-1050 cm -1 and 1400-1480 cm -1 assigned to stretching vibration of -C-C-chain, bending of CH 2 -, respectively. Additionally, C-H bonding in propyl groups results in absorbance at 1240 cm -1 and 2920-2940 cm -1 corresponding to bending and asymmetric vibration of C-H. 19) The presence of mercapto groups is identified by the appearance of bands at 694 cm -1 and 879 cm -1 that can be assigned to asymmetric stretching of C-S and bending vibration of S-H. Band at 2450-2600 cm -1 expected is not appeared in the IR spectra probable due very low content of mercapto groups and weak absorbance 24) .…”

Section: Functional Groupsmentioning

confidence: 99%

“…Sol-gel process for modification of silica with organo groups has been reported by several researchers. [17][18][19] Kim and Todino 18) used TEOS as the silica source and 3-mercaptopropyltriethoxysilane (MPTES) as the mercapto source to prepare mercapto modified silica. In the experiment, a mixture of MPTES and TEOS in molar to molar percentages of 20% (m/m) was added to the CTAB (cetyl trimethylammonium bromide) and ammonia solution slowly and under continuous agitation.…”

Section: Introductionmentioning

confidence: 99%

“…The adsorbent then was used to preconcentration of Au(III), Cu and Ag(I) in analysis with continuous systems coupled on-line to an atomic absorption spectrometry. Sakti et al 19) reported the use of sodium silicate solution and 3-aminopropyl-trimethoxysilane (APTMS) to prepare amino modified silica. In the preparation, HCl solution 3 M was added drop wise in a mixture of silicate solution produced from RHA and APTMS with constant stirring until pH reached 7.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of Au(III), Cu(II) and Ni(II) on Magnetite Coated with Mercapto Groups Modified Rice Hull Ash Silica

Nuryono¹,

Muliaty²,

Rusdiarso³

et al. 2014

J.I.E.

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Adsorption of Au(III) in multi-metal systems Au/Cu/Ni on mercapto modified silica coated on magnetite (Fe 3 O 4 /SiO 2 -SH) has been studied. Fe 3 O 4 /SiO 2 -SH was synthesized via sol-gel process by using magnetite obtained through co-precipitation of Fe 2+ /Fe 3+ salt mixture with NH 4 OH as the precipitating solution, sodium silicate solution extracted from rice hull ash and 3-mercaptopropyltrimethoxysilane (MPTMS) as the mercapto group source. Fe 3 O 4 /SiO 2 -SH was characterized with Fourier transform infrared (FTIR) spectrophotometer, X-ray diffraction (XRD) and ion chromatography for sulfur analysis. Optimization of Au(III) adsorption in a batch system was carried out as function of pH, contact time and ion concentration. Adsorption kinetics was evaluated with pseudo-first order and pseudo-second order models based on the data of contact time variation, while the adsorption isotherm was studied based on Langmuir and Freundlich models. The adsorbed metal ions Au(III), Cu(II) and Ni(II) quantitatively were calculated based on the difference of metal concentrations before and after adsorption analyzed with flame atomic absorbance spectrophotometer (FAAS). Results of characterization showed that Fe 3 O 4 /SiO 2 -SH has been successfully synthesized. Adsorption of Au(III) on Fe 3 O 4 /SiO 2 -SH slightly decreased with increasing the pH in a range of 2.0-6.0 and fits to pseudo-second order model with the rate constant of 1.37x10 -3 g mg -1 min -1 . Fe 3 O 4 /SiO 2 -SH shows a linear plot of Langmuir isotherm model with adsorption the capacity for Au(III) of 125 mg/g. Adsorption on multimetal systems shows that capacity of Au(III) on Fe 3 O 4 /SiO 2 -SH is higher than that of Cu(II) and Ni(II), and high selectivity for Au(III) toward Cu(II) and Ni(II) ions.

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“…Modification of silica is typically accomplished through silanization reaction, yet requires long and tedious procedure through heating process. To overcome this problem, several studies with a simple technique of sol-gel process for modification of silica with functional groups have been reported [19,[27][28][29].…”

Section: +mentioning

confidence: 99%

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

Fahmiati¹,

Nuryono²,

Suyanta³

2018

Asian J. Chem.

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Diethylenetriamine (DETA) functionalized silica coated on magnetic material of iron sand (MM@SiO2-DETA) has been synthesized by sol-gel method. Synthesis was carried out by coating magnetic material of iron sand as the core with diethylenetriamine-modified silica using sodium silicate solution and N 1 -(3-trimethoxysylilpropyl)diethylenetriamine (TMPSDETA) as silica and diethylenetriamine group sources, respectively. Several variations of mole ratio of silica to DETA at a constant weight of magnetic material were examined to evaluate the effect of the coating agent amount on the properties of MM@SiO2-DETA. MM@SiO2-DETA was characterized with Fourier transform infrared spectrophotometer, X-ray diffraction, scanning electron microscope with energy dispersive spectroscope (SEM-EDX), vibrating sample magnetometer and thermal gravimetric analysis. Stability test of product toward acidic solution and the effect of mole ratio of SiO2 and DETA on adsorption of Au(III) also evaluated. The characterization results indicated that SiO2 and DETA groups were successfully attached to the surface of magnetic material to form MM@SiO2-DETA. Characteristic bands of the vibration of propyl and amino groups derived from DETA; indicating that DETA was successfully reacted with MM@SiO2. Coating of magnetic material with SiO2 exhibits the decrease in Ms up to 38.2 emu/g and 23.5 emu/g after coating with SiO2-DETA. Thermalgravimetric analysis indicate thermal stability of the resulted product of MM@SiO2-DETA (1:1) up to 350 °C. Dissolution by acid solution can be diminished by coating magnetic material with silica. Gold(III) adsorption capacity of MM@SiO2-DETA (1:0.5), MM@SiO2-DETA (1:1) and MM@SiO2-DETA (1:2) are found to be higher than 92 %.

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Adsorption of gold(III) on ionic imprinted amino-silica hybrid prepared from rice hull ash

Cited by 23 publications

References 42 publications

Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne)

Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne)

Adsorption of Au(III), Cu(II) and Ni(II) on Magnetite Coated with Mercapto Groups Modified Rice Hull Ash Silica

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

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