A short route of micrometric magnetite synthesis via Fe-EDTA thermal decomposition

Chirita, Marius; Bănică, Radu; Sfîrloagă, Paula; Ieta, Adrian; Grozescu, Ioan

doi:10.1109/smicnd.2010.5650629

Cited by 9 publications

(17 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In photocatalysis, a photon is absorbed to generate electron-hole pairs and active intermediates, important for oxidation reactions. Basic fundamental aspects have been summarized in previous review articles [1,2]. The more recent aspects of solar energy conversion and the technical barriers in semi-conductor-based catalysis have been very recently reviewed [3,4].…”

Section: Introductionmentioning

confidence: 99%

Quantum-dots containing Fe/SBA-15 silica as “green” catalysts for the selective photocatalytic oxidation of alcohol (methanol, under visible light)

Tabaja¹,

Casale²,

Brouri³

et al. 2015

Comptes Rendus. Chimie

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Quantum-dots containing Fe/SBA-15 silica as “green” catalysts for the selective photocatalytic oxidation of alcohol (methanol, under visible light)

Tabaja¹,

Casale²,

Brouri³

et al. 2015

Comptes Rendus. Chimie

View full text Add to dashboard Cite

“…This method was originally proposed by Mozetič et al [35] to synthesize high-density niobium oxide nanowires. For more general and recent details on the properties of iron oxides, we refer the readers to a recent review by Chirita and Grozescu [15] that covers the different polymorphs of the iron oxides as well as their electrochemical properties in the context of photoelectrochemistry.…”

Section: Introductionmentioning

confidence: 99%

Reversible Carrier‐Type Transitions in Gas‐Sensing Oxides and Nanostructures

et al. 2010

View full text Add to dashboard Cite

Despite many important applications of α-Fe(2)O(3) and Fe doped SnO(2) in semiconductors, catalysis, sensors, clinical diagnosis and treatments, one fundamental issue that is crucial to these applications remains theoretically equivocal--the reversible carrier-type transition between n- and p-type conductivities during gas-sensing operations. Herein, we present an unambiguous and rigorous theoretical analysis in order to explain why and how the oxygen vacancies affect the n-type semiconductors α-Fe(2)O(3) and Fe-doped SnO(2), in which they are both electronically and chemically transformed into a p-type semiconductor. Furthermore, this reversible transition also occurs on the oxide surfaces during gas-sensing operation due to physisorbed gas molecules (without any chemical reaction). We make use of the ionization energy theory and its renormalized ionic displacement polarizability functional to reclassify, generalize and explain the concept of carrier-type transition in solids, and during gas-sensing operation. The origin of such a transition is associated with the change in ionic polarizability and the valence states of cations in the presence of oxygen vacancies and physisorped gas molecules.

show abstract

“…An aqueous solution of Potassium ferrocyanide, K 4 [Fe(CN) 6 ] · 3H 2 O, (0.1 molar) was prepared in 100 ml water. An aqueous solution of anhydrous ferric chloride, FeCl 3 , (0.2 molar) was prepared in 100 ml water.…”

Section: Preparation Of Thin Filmsmentioning

confidence: 99%

“…Many chemical and physical methods such as adsorption, precipitation, air stripping, reverse osmosis, ultrafiltration and flocculation are used for removal of these contaminants in wastewaters. Heterogeneous photocatalysis is a promising technique for photodegradation of various toxic chemicals that are encountered in waste waters [6]. Heterogeneous photocatalytic oxidation is an effective method to remove low concentrations of organic contaminants [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Direct Violet 4-Azodye in Aqueous Solution Using Α-Fe2o3thin Films

Aboubaraka¹,

El-Moselhy²,

Zaher³

et al. 2013

Al-Azhar Bulletin of Science- Basic Science Sector

View full text Add to dashboard Cite

This study involves the preparation of α-Fe 2 O 3 thin films coated on microscopic glass slides by thermal spray followed by thermally-induced decomposition of Prussian Blue(PB), Fe 4 [Fe(CN) 6 ] 3 , in air at 250°C. XRD and SEM were used to characterize the synthesized thin films for surface morphology texturing. Photocatalytic activity of α-Fe 2 O 3 thin films was investigated using direct violet 4-azodye, employing heterogeneous photocatalytic process. Two different types of light have been used in this study, one using UV light and the other using visible light using a 100-watt tungsten lamp. α-Fe 2 O 3 thin film does not give any significant effect upon using UV light while visible light caused more than 69.5% degradation of direct violet 4-azodye in the presence of 90.66 mg/L of H 2 O 2 . We studied the effect of different parameters on photocatalytic degradation process including changes in H 2 O 2 concentration and pH of the medium, were studied.

show abstract

A short route of micrometric magnetite synthesis via Fe-EDTA thermal decomposition

Cited by 9 publications

References 11 publications

Quantum-dots containing Fe/SBA-15 silica as “green” catalysts for the selective photocatalytic oxidation of alcohol (methanol, under visible light)

Quantum-dots containing Fe/SBA-15 silica as “green” catalysts for the selective photocatalytic oxidation of alcohol (methanol, under visible light)

Reversible Carrier‐Type Transitions in Gas‐Sensing Oxides and Nanostructures

Photocatalytic Degradation of Direct Violet 4-Azodye in Aqueous Solution Using Α-Fe2o3thin Films

Contact Info

Product

Resources

About