XPS study on the correlation between chemical state and oxygen-sensing properties of an iron oxide thin film

Aronniemi, Mikko; Sainio, Jani; Lahtinen, Jouko

doi:10.1016/j.apsusc.2007.06.007

Cited by 63 publications

(28 citation statements)

References 22 publications

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“…The sharp nature of the O1s peak (532 eV) also suggests that the oxygen is in one oxidation state. The O1s peak is very close to the 530 eV reported to be the lattice oxygen of Fe 2 O 3 and Fe 3 O 4 [20,21] . The dominant oxide of Fe on our electrode from this result can be taken as Fe 2 O 3 since species of Fe 3 O 4 are not apparent.…”

Section: Characterisation With Fesem Afm Edx and Xpsmentioning

confidence: 54%

Electrocatalytic detection of dopamine at single-walled carbon nanotubes–iron (III) oxide nanoparticles platform

Adekunle

Agboola

Pillay

et al. 2010

Sensors and Actuators B: Chemical

156

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Section: Characterisation With Fesem Afm Edx and Xpsmentioning

confidence: 54%

Electrocatalytic detection of dopamine at single-walled carbon nanotubes–iron (III) oxide nanoparticles platform

Adekunle

Agboola

Pillay

et al. 2010

Sensors and Actuators B: Chemical

156

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“…The O 1s profile contains two shoulders at 530.4 eV and 531.6 eV, in addition to 532.8 eV. These features can be attributed, respectively, to O in the iron oxide lattice [23], O in structural OH − [24], and O in physisorbed water [25]. The C 1s profile shows a duplet at 285.2 eV and 286.4 eV.…”

Section: Characterization Of Gt-fe Npsmentioning

confidence: 93%

Green synthesis of iron nanoparticles and their application as a Fenton-like catalyst for the degradation of aqueous cationic and anionic dyes

Shahwan¹,

Sirriah²,

Nairat³

et al. 2011

Chemical Engineering Journal

733

344

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a b s t r a c tIron nanoparticles were produced using extracts of green tea leaves (GT-Fe NPs). The materials were characterized using TEM, SEM/EDX, XPS, XRD, and FTIR techniques and were shown to contain mainly iron oxide and iron oxohydroxide. The obtained nanoparticles were then utilized as a Fenton-like catalyst for decolorization of aqueous solutions containing methylene blue (MB) and methyl orange (MO) dyes. The related experiments investigated the removal kinetics and the effect of concentration for both MB and MO. The concentrations of dyes in aqueous solution were monitored using ultraviolet-visible (UV-vis) spectroscopy. The results indicated fast removal of the dyes with the kinetic data of MB following a second order removal rate, while those of MO were closer to a first order removal rate. The loading experiments indicated almost complete removal of both dyes from water over a wide range of concentration, 10-200 mg L −1 . Compared with iron nanoparticles produced by borohydride reduction, GT-Fe nanoparticles demonstrated more effective capability as a Fenton-like catalyst, both in terms of kinetics and percentage removal.

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“…ions. In terms of higher-binding-energy O b peak, some reports 32,33 believe that the peak around 532 eV is related to near-surface oxygen, such as oxygen atoms in carbonate ions, surface hydroxylation, adsorbed oxygen arisen from contact with the outer atmosphere, while other reports [34][35][36] prove that this peak can develop with increasing loss of oxygen and can be associated with O 2À ions in oxygen-deficient regions (oxygen vacancies). In our study, this peak is most probably assigned to V O .…”

Section: Resultsmentioning

confidence: 95%

Strong correlation between oxygen vacancy and ferromagnetism in Yb-doped ZnO thin films

Liu

Zhou

et al. 2014

Journal of Applied Physics

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Zn1−xYbxO (0 ≤ x ≤ 0.02) thin films have been prepared by inductively coupled plasma enhanced physical vapor deposition method. All the Yb-doped ZnO thin films show room-temperature ferromagnetism. The correlation between oxygen vacancy and magnetism in Yb-doped ZnO thin films is studied. It is found that Yb irons initially substitute for Zn sites when x ≤ 0.01 and then enter the interstitial sites of ZnO with increasing Yb concentration of x > 0.01. The ferromagnetism is induced by the coexistence of oxygen vacancy and Yb point defects. A strong correlation between oxygen vacancy and saturation magnetization is observed.

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XPS study on the correlation between chemical state and oxygen-sensing properties of an iron oxide thin film

Cited by 63 publications

References 22 publications

Electrocatalytic detection of dopamine at single-walled carbon nanotubes–iron (III) oxide nanoparticles platform

Electrocatalytic detection of dopamine at single-walled carbon nanotubes–iron (III) oxide nanoparticles platform

Green synthesis of iron nanoparticles and their application as a Fenton-like catalyst for the degradation of aqueous cationic and anionic dyes

Strong correlation between oxygen vacancy and ferromagnetism in Yb-doped ZnO thin films

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