Functionalization of Fe&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;/SiO&lt;sub&gt;2&lt;/sub&gt; with N-(2-Aminoethyl)-3-aminopropyl for Sorption of [AuCl&lt;sub&gt;4&lt;/sub&gt;]&lt;sup&gt;-&lt;/sup&gt;

Nuryono, Nuryono; Syukur, Mighfar; Kuncaka, Agus; Sakti, Satya Candra Wibawa

doi:10.22146/ijc.21155

Cited by 4 publications

(3 citation statements)

References 20 publications

(26 reference statements)

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“…3. The observation of X-ray diffraction pattern for four samples seems characteristic peaks of magnetite confirmed by JCPDS 19-0629 with the index field (220), (311), (400), (511) and (440) 36 , and hence it denote that the cubic crystal phase of magnetite is stand after coating with L-arginine-modified silica 37 . The presence of SiO 2 amorphous phase is showed by specific 2q at 22 degrees 38 (Fig.…”

Section: Crystalline Structuresupporting

confidence: 55%

“…The result of calculation is presented in Table 6, showing that the adsorption kinetics model of pseudo-second order is more suitable with the higher linear coefficient (R 2 ) value (0.999) than pseudo-first-order one. This shows that the adsorption system involves the exchange of electrons between the magnetic adsorbent and Au(III) ion in aqueous solution 37,53 .…”

Section: Adsorption Kineticsmentioning

confidence: 92%

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Preparation of L-Arginine-Modified Silica-Coated Magnetite Nanoparticles for Au(III) Adsorption

Amaria¹,

Nuryono²,

Suyanta³

2017

Orient. J. Chem

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L-arginine-modified silica-coated magnetite nanoparticles (Fe 3 O 4 /SiO 2 -GPTMS-Arg) have been synthesized by sol-gel process for adsorption of Au(III) ion in aqueous solution. Modification of L-arginine on silica coated magnetite through a coupling agent of 3-glycidoxypropyl-trimethoxysilane (GPTMS) was performed in a various mole ratio of GPTMS:Arg 1:0; 1:1; 1:2 and 1:3. The products of Fe 3 O 4 /SiO 2 -GPTMS-Arg were characterized with XRD, FTIR, EDX, TGA, and Kjeldahl methods. The results showed that based on characterization data Fe 3 O 4 /SiO 2 -GPTMS-Arg has been successfully synthesized with the optimum mole ratio of 1:2. The optimum adsorption of Au(III) occurs at pH 3 and contact time of 60 min. The adsorption capacity followed Langmuir isotherm model was found 0.638 mmol.g -1 for the Fe 3 O 4 /SiO 2 -GPTMS-Arg 1:2. Fe 3 O 4 /SiO 2 -GPTMS-Arg nanoparticles show a potential adsorbent for an effective Au(III) ion removal.

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Section: Crystalline Structuresupporting

confidence: 55%

Section: Adsorption Kineticsmentioning

confidence: 92%

Preparation of L-Arginine-Modified Silica-Coated Magnetite Nanoparticles for Au(III) Adsorption

Amaria¹,

Nuryono²,

Suyanta³

2017

Orient. J. Chem

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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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Magnetic hollow buoyant alginate beads achieving rapid remediation of oil contamination on water

Sakti

Wijaya

Indrasari

et al. 2021

Journal of Environmental Chemical Engineering

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Functionalization of Fe<sub>3</sub>O<sub>4</sub>/SiO<sub>2</sub> with N-(2-Aminoethyl)-3-aminopropyl for Sorption of [AuCl<sub>4</sub>]<sup>-</sup>

Cited by 4 publications

References 20 publications

Preparation of L-Arginine-Modified Silica-Coated Magnetite Nanoparticles for Au(III) Adsorption

Preparation of L-Arginine-Modified Silica-Coated Magnetite Nanoparticles for Au(III) Adsorption

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

Magnetic hollow buoyant alginate beads achieving rapid remediation of oil contamination on water

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