Structural, optical and morphological characterization of Cu-doped α-Fe 2 O 3 nanoparticles synthesized through co-precipitation technique

Lassoued, Abdelmajid; Lassoued, Mohamed Saber; Dkhil, Brahim; Gadri, Abdellatif; Ammar, Salah

doi:10.1016/j.molstruc.2017.07.051

Cited by 85 publications

(31 citation statements)

References 42 publications

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“…he α-Fe 2 O 3 particles were found in the range of 10 -40 nm as shown in Table 2. The particle size was significantly varied due to the precipitating temperature and an amount of NaOH precipitating agenta similar discussion has been observed in various other studies 25,26,28 .…”

Section: Th (1)supporting

confidence: 85%

“…It could be contributed to the removal of water absorbed on the surface of the -Fe 2 O 3 particles. The second step revealed a minor weight loss (< 0.5 wt.%) occurring at the range of 450-550C, which is in accordance with the transition phase of the synthesized compound 25,26,28 . The third weight loss was detected at a temperature above 700C.…”

Section: Feooh (S)  Fe 2 O 3 (S) + H 2 O (G) (2)supporting

confidence: 77%

“…In order to prepare the hematite nanoparticle, several synthesis methods were studied i.e. sol-gel method 21,22 , hydrothermal 23,24 , precipitation [25][26][27][28] , nonthermal/thermal plasma 29,30 , etc. The selection of such different methods was dependent upon their applications.…”

Section: Introductionmentioning

confidence: 99%

“…A number of morphology characteristics have been reported i.e. sphere 25,26,28 , snowflake-like 29 , or rods 31 with a particle size of a few to several hundred nanometers.…”

Section: Introductionmentioning

confidence: 99%

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Activated carbon-doped with iron oxide nanoparticles (a-Fe2O3 NPs) preparation: particle size, shape, and impurity

Upasen¹

2018

IJCTR

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Inspired by the development of an adsorbent material with a high capacity for chlorinated gas treatment, an -Fe 2 O 3 nanoparticle deposited activated carbon adsorbent was successfully synthesized. The -Fe 2 O 3 NPs synthesis was done by a facile chemical precipitation method using sodium hydroxide (NaOH) as a precipitant agent. The variation of the molar ratio of the reactant and precipitant (i.e. 1:1, 1:1.5, 1:2 by mole) and of the precipitating temperature (i.e. 50, 70, 90C) were explored. The physical and chemical characteristics of the synthesized samples were examined using various techniques; Transmission Electron Microscope (TEM), Brunauer-Emmett-Teller analysis (BET), Thermogravimetry analysis (TGA), Fourier Transform Infra-Red (FT-IR) and Ultraviolet-Visible spectrophotometer. The result shows that two synthesized conditions-1:1 by mole (FeCl 3 :NaOH) at 70C and 1:1.5 by mole (FeCl 3 :NaOH) at 90C-were allowed to produce the smallest size of -Fe 2 O 3 NPs approximately 10 nm. Consequently, it gave the highest specific surface area of 110 m 2 /g. With a higher FeCl 3 : NaOH molar ratio and a higher precipitating temperature, the synthesized Fe 2 O 3 NPs formed a more oval shape with a finer surface. Due to the insufficient purification, unfortunately, an impurity caused by sodium salt was detected in the amount of 5-10 wt.%. The minimum amount of 75 wt.% -Fe 2 O 3 NPs coated on the activated carbon was observed. The production yield of the synthesized -Fe 2 O 3 and -Fe 2 O 3 /GAC samples was also reported.

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Section: Th (1)supporting

confidence: 85%

Section: Feooh (S)  Fe 2 O 3 (S) + H 2 O (G) (2)supporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

“…A number of morphology characteristics have been reported i.e. sphere 25,26,28 , snowflake-like 29 , or rods 31 with a particle size of a few to several hundred nanometers.…”

Section: Introductionmentioning

confidence: 99%

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Activated carbon-doped with iron oxide nanoparticles (a-Fe2O3 NPs) preparation: particle size, shape, and impurity

Upasen¹

2018

IJCTR

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“…Hematite iron oxide (α‐Fe 2 O 3 ) is an important n‐type semiconductor material with narrow band gap (2.2 eV), which has the advantages of good stability, nontoxic, low cost, and ease of synthesis . At present, various approaches for synthesizing iron oxides have been developed, such as chemical co‐precipitation method, hydrothermal method, microemulsion method, sol–gel method, and high‐energy ball milling methods . Various α‐Fe 2 O 3 nanostructures have been successfully synthesized, such as nanoparticles, nanoplates, nanosheets, grass‐like nanostructures, and nanotubes .…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic‐Assisted Hydrolysis Precipitation Rapid Synthesis of Rod‐Like α‐Fe₂O₃ Nanostructures and Its Interfacial Electron Transfer Properties

Qin

et al. 2018

Crystal Research and Technology

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Uniform 3D rod-like α-Fe 2 O 3 nanostructures are prepared by a simple ultrasonic-assisted hydrolysis precipitation method. The obtained α-Fe 2 O 3 samples are characterized by X-ray diffraction (XRD), Fourier transform infrared spectrum (FTIR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and electrochemical workstation. These rod-like α-Fe 2 O 3 nanostructures, with a mean diameter of about 38 nm, their ratios of length to diameter are about 5-8. The interfacial electron transfer properties of rod-like α-Fe 2 O 3 nanostructures are verified. The current synthetic strategy provides a convenient, low-cost, and nontoxic route to prepare 3D architectures of other semiconductors, and it is important for exploring oxide-based nanostructures.

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Influence of Ammonia and Different Promoters on the Iron‐Based Fischer‐Tropsch Synthesis

Einemann,

Neumann,

Roessner

2024

ChemCatChem

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The material properties of precipitated iron promoted with either K, Mn, Pt, Ru, Zn, respectively, and their catalytic performance in the Fischer‐Tropsch synthesis were evaluated. A special attention was paid to the influence of ammonia on the reaction. Different spectroscopic methods e. g. XPS and XANES revealed the structure of both iron and the corresponding promoter. Conclusions were also drawn for the activated (reduced) catalysts. Applying temperature programmed reduction and XRD, the presence of iron nitrides through ammonia treatment was discovered. In the presence of ammonia under the Fischer‐Tropsch reaction conditions the formation of amines was detected. The highest yield of amines was observed for the manganese promoted catalyst. The investigation of hydrogen activating and not activating promoters in combination with iron, made it possible to hypothesise about the mechanism of the incorporation of ammonia into hydrocarbons under Fischer‐Tropsch reaction conditions.

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Structural, optical and morphological characterization of Cu-doped α-Fe 2 O 3 nanoparticles synthesized through co-precipitation technique

Cited by 85 publications

References 42 publications

Activated carbon-doped with iron oxide nanoparticles (a-Fe2O3 NPs) preparation: particle size, shape, and impurity

Activated carbon-doped with iron oxide nanoparticles (a-Fe2O3 NPs) preparation: particle size, shape, and impurity

Ultrasonic‐Assisted Hydrolysis Precipitation Rapid Synthesis of Rod‐Like α‐Fe₂O₃ Nanostructures and Its Interfacial Electron Transfer Properties

Influence of Ammonia and Different Promoters on the Iron‐Based Fischer‐Tropsch Synthesis

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Structural, optical and morphological characterization of Cu-doped α-Fe 2 O 3 nanoparticles synthesized through co-precipitation technique

Cited by 85 publications

References 42 publications

Activated carbon-doped with iron oxide nanoparticles (a-Fe2O3 NPs) preparation: particle size, shape, and impurity

Activated carbon-doped with iron oxide nanoparticles (a-Fe2O3 NPs) preparation: particle size, shape, and impurity

Ultrasonic‐Assisted Hydrolysis Precipitation Rapid Synthesis of Rod‐Like α‐Fe2O3 Nanostructures and Its Interfacial Electron Transfer Properties

Influence of Ammonia and Different Promoters on the Iron‐Based Fischer‐Tropsch Synthesis

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Product

Resources

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Ultrasonic‐Assisted Hydrolysis Precipitation Rapid Synthesis of Rod‐Like α‐Fe₂O₃ Nanostructures and Its Interfacial Electron Transfer Properties