Preparation and thermal stability of Al2O3-clay and Fe2O3-clay nanocomposites, with potential application as remediation of radioactive effluents

Hristodor, Claudia-Mihaela; Vrînceanu, Narcisa; Pode, Rodica; Copcia, Violeta Elena; Botezatu, Elena; Popovici, Eveline

doi:10.1007/s10973-012-2330-6

Cited by 12 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…composite materials, which could be also used for the environmental purposes as adsorbents of the organic and inorganic compounds and metal ions [22][23][24][25]. This paper deals with the structural and surface characterization of composite materials prepared by magnetic modification of the natural clay and their application as potential adsorbents of heavy metal cations.…”

Section: Introductionmentioning

confidence: 99%

BENTONITE/IRON OXIDE MAGNETIC COMPOSITES: CHARACTERIZATION AND APPLICATION AS Pb(II) ADSORBENTS

Danková¹,

Fedorová²,

Bekényiová³

2017

AFST

View full text Add to dashboard Cite

The natural clay bentonite (B) as adsorbent of lead cations was studied. To enhance its adsorption capacity, the coating by iron oxide particles, in two selected weight ratios: 2:1 (BM1) and 4:1(BM2), was used. The changes of the textural and surface parameters after the modification were studied by the low temperature nitrogen adsorption, XRD and SEM method, Mössbauer spectroscopy. The Pb(II) adsorption experiments were studied under the different conditions, such as pH of the model solutions, contact time and initial metal ion concentration. Higher adsorption rates of BM1 and BM2 samples were observed for lower initial metal ion concentrations.

show abstract

Section: Introductionmentioning

confidence: 99%

BENTONITE/IRON OXIDE MAGNETIC COMPOSITES: CHARACTERIZATION AND APPLICATION AS Pb(II) ADSORBENTS

Danková¹,

Fedorová²,

Bekényiová³

2017

AFST

View full text Add to dashboard Cite

show abstract

“…Clay solids are washed using deionized water until free of Cl ions (shown by negative test against AgNO 3 0.1M). The clay was dried at 110 o C for 12 hours followed by calcination at 400 o C for 4 hours (Hristodor et al, 2013). The calcinated montmorillonite then sifted using a 100-mesh sieve.…”

Section: Materials Synthesismentioning

confidence: 99%

SYNTHESIS AND CHARACTERIZATION OF PHOTOCATALYS Fe2O3 PILLARED MONTMORILLONITE DOPED TiO2 AND ITS APPLICATION FOR RHODAMINE B PHODODEGRADATION USING VISIBLE LIGHT IRRADIATION

Dewi

Simpen

Suarsa

2020

JCHEM

View full text Add to dashboard Cite

A montmorillonite clay modified with semiconductor metal can act as a photocatalyst material. Montmorillonite clays were chosen because of their natural characteristics which are easily to be modified and have high specific surface area. This research aims to modify montmorillonite clay into photocatalyst material. The montmorillonite clay was intercalated using Fe2O3 to produce Fe2O3-pillared montmorillonite clay, then doped with TiO2 to form a photocatalyst material Fe2O3-PILC / TiO2. Modifications were intended to increase the specific surface area and number of active photocatalyst sites and thus increase the ability of photodegradation. The characterization carried out included characterizing the pillar formation using X-ray Diffraction (XRD), specific surface area by the BET method (Bruneau, Emmet, and Teller), a the number of surface acid-base sites by the titration method. Photocatalyst with the best character was Fe2O3-PILC / TiO2 1: 3 with specific surface area, number of acid and base sites respectively 45,947 m2/g, 20,1736 x 1023 sites/gram and 19,0044 x 1023 sites/gram. The result of photodegradation at optimum condition with visible light at pH 3 using 400 mg photocatalyst was 99.84%. Keywords: photocatalyst, Fe2O3, montmorillonite clay, TiO2, rhodamine B

show abstract

“…Creating polyaniline nanocomposites by adding nano particles is a promising way to overcome its poor mechanical properties. In recent years, polymer-clay nanocomposites have received considerable research attention because of the remarkable improvement in physical, 25 and mechanical properties, 26,27 such as high modulus 28 increased strength and heat resistance. 29 Montmorillonite (MMT) is a clay mineral that consists of two fused silicate tetrahedral sheets sandwiching an edge shared octahedral sheet of either magnesium or aluminum hydroxide.…”

Section: Introductionmentioning

confidence: 99%

Investigation of physical and mechanical properties of polyaniline/MMT nanocomposites

Hamid¹,

Shakeri²,

Saadattalab³

2017

10.5267/j.ccl

View full text Add to dashboard Cite

Polyaniline (PANI) was synthesized chemically in an acidic medium in the presence of ammonium persulfate (APS) as an oxidizing agent. PANI/montmorillonite nano-composites were prepared in the presence of various amounts of modified clay (from 1 to 5 wt.%) by solution casting method. The free standing film of polyaniline and PANI/clay nano-composites was obtained by vaporization of solvent contain. Products were characterized by FT-IR spectra, SEM image, and XRD pattern. Thermal stability was also studied by TGA analysis, electrical conductivity was measured by four point probe technique and mechanical properties were studied by tensile strength. The PANI/clay nano-composites thermal and mechanical properties were observed to be remarkably improved. For example, polyaniline containing nano-clay has less weight loss compared to pure polyaniline. In addition Young's modulus and strength at break point was increased in the case of polyaniline containing nano-clay The importance of our work is to provide a narrow look on the thermal and physical properties of polyaniline by the incorporation of montmorillonite into its structure as well as investigation of the conductivity of PANI/MMT nanocomposites as a potential conductive polymer to be used in solar cells or have corrosion protection applications.

show abstract

Preparation and thermal stability of Al2O3-clay and Fe2O3-clay nanocomposites, with potential application as remediation of radioactive effluents

Cited by 12 publications

References 18 publications

BENTONITE/IRON OXIDE MAGNETIC COMPOSITES: CHARACTERIZATION AND APPLICATION AS Pb(II) ADSORBENTS

BENTONITE/IRON OXIDE MAGNETIC COMPOSITES: CHARACTERIZATION AND APPLICATION AS Pb(II) ADSORBENTS

SYNTHESIS AND CHARACTERIZATION OF PHOTOCATALYS Fe2O3 PILLARED MONTMORILLONITE DOPED TiO2 AND ITS APPLICATION FOR RHODAMINE B PHODODEGRADATION USING VISIBLE LIGHT IRRADIATION

Investigation of physical and mechanical properties of polyaniline/MMT nanocomposites

Contact Info

Product

Resources

About