Plasma enhanced-CVD of undoped and fluorine-doped Co3O4 nanosystems for novel gas sensors

Barreca, Davide; Bekermann, Daniela; Comini, Elisabetta; Devi, Anjana; Fischer, Roland A.; Gasparotto, Alberto; Gavagnin, Marco; Maccato, Chiara; Sada, Cinzia; Tondello, Eugenio

doi:10.1016/j.snb.2011.07.016

Cited by 56 publications

(90 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main one, located at 284.8 eV (45.6% of the total C content), is assigned to adventitious contamination (Refs. [15][16][17][18], whereas the one located at 286.3 eV (24.0% of the total C content) can be attributed to the presence of adsorbed carbonates arising from air exposure (Refs. [16][17][18].…”

Section: Recommended Energy Scale Shift: Nonementioning

confidence: 99%

“…[15][16][17][18], whereas the one located at 286.3 eV (24.0% of the total C content) can be attributed to the presence of adsorbed carbonates arising from air exposure (Refs. [16][17][18]. The two bands at 289.0 and 292.6 eV (17.3% and 13.1% of the total C amount, respectively) can be ascribed to CF and CF 2 species (Refs.…”

Section: Recommended Energy Scale Shift: Nonementioning

confidence: 99%

“…The main one, located at 684.5 eV (53.8% of the total F content), is related to lattice fluorine species (Refs. 2, 10, [16][17][18]20) whereas the second one at BE = 688.3 eV can be attributed to C-F x moieties (Refs. 2, [16][17][18], in line with data pertaining to the C 1s peak (see Accession #1248-02).…”

Section: Spectral Featuresmentioning

confidence: 99%

See 2 more Smart Citations

Fluorine-Doped Iron Oxide Nanomaterials by Plasma Enhanced-CVD: An XPS Study

Carraro

Gasparotto

Maccato

et al. 2013

Surface Science Spectra

Self Cite

View full text Add to dashboard Cite

In this work, we report on a single-step Plasma Enhanced-Chemical Vapor Deposition (PE-CVD) process for the synthesis of iron(III) oxide based nanomaterials. A key feature of the adopted fabrication strategy is the use of a fluorinated Fe(II) b-diketonate diamine precursor, enabling a homogeneous Fe2O3 in-situ doping and resulting in a tunable fluorine content as a function of deposition temperature. To this regard, a detailed study of the nature and amount of fluorinecontaining moieties is strongly required in view of the process optimization. Specifically, X-ray Photoelectron Spectroscopy (XPS) analysis represents a strategic tool to evaluate the system chemical composition, and also to evidence the presence of fluorine in different chemical states, such as lattice fluorine (F-Fe) and traces of precursor residuals (CFx) at the system surface. In the present study, spectroscopic data are presented and discussed in detail for a representative Fe2O3 specimen

show abstract

Section: Recommended Energy Scale Shift: Nonementioning

confidence: 99%

Section: Recommended Energy Scale Shift: Nonementioning

confidence: 99%

See 1 more Smart Citation

Fluorine-Doped Iron Oxide Nanomaterials by Plasma Enhanced-CVD: An XPS Study

Carraro

Gasparotto

Maccato

et al. 2013

Surface Science Spectra

Self Cite

View full text Add to dashboard Cite

show abstract

“…CVD has been used to improve the sensor performance by homogenous doping with fluorine, with F-doped Co 3 O 4 successfully grown at temperatures between 200 and 400˝C by plasma enhanced-chemical vapour deposition using single-source precursors, Co(dbm) 2 (where dbm = 1,3-Diphenyl-1,3-propanedione) and Co(hfa) 2 TMEDA (where hfa = 1,1,1,5,5,5-hexafluoro-2,4-pentanedionate and TMEDA = N,N,N',N'-tetramethylethylenediamine) respectively [90]. Sensors were tested against 100 ppm of acetone at different operating temperatures and whilst undoped films exhibited a higher sensitivity when the operating temperature was 300 or 400˝C, F-doped Co 3 O 4 operating at 200˝C showed the best response of all the tested sensors ( Table 4).…”

Section: Complex Oxidesmentioning

confidence: 99%

Chemical Vapour Deposition of Gas Sensitive Metal Oxides

et al. 2016

View full text Add to dashboard Cite

This article presents a review of recent research efforts and developments for the fabrication of metal-oxide gas sensors using chemical vapour deposition (CVD), presenting its potential advantages as a materials synthesis technique for gas sensors along with a discussion of their sensing performance. Thin films typically have poorer gas sensing performance compared to traditional screen printed equivalents, attributed to reduced porosity, but the ability to integrate materials directly with the sensor platform provides important process benefits compared to competing synthetic techniques. We conclude that these advantages are likely to drive increased interest in the use of CVD for gas sensor materials over the next decade, whilst the ability to manipulate deposition conditions to alter microstructure can help mitigate the potentially reduced performance in thin films, hence the current prospects for use of CVD in this field look excellent.

show abstract

“…Meanwhile, ZnO possesses certain properties similar to that of TiO 2 such as low-cost, high-purity, clear morphological crystals, and environment benign, possessed by ZnO makes them an active semiconductor photocatalyst [7][8][9]. ZnO is an accomplished n-type semiconductor having useful application in many fields such as gas sensors, as a photocatalyst, optoelectronic devices, and solar cells [10][11][12][13]. ZnO nanostructures have also been extensively used as sensors, actuators, nanoelectronics, optoelectronics, nanogenerators, cancer therapy, and detection, dye-sensitized solar cell (DSSCs), making these nanostructures as one of the most important multifunctional nanomaterials having a broad range of applications [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Template-Free Processing of Ag-Anchored ZnO Polyscale Sheets and Their Application in the Photocatalytic Degradation of Organics Present in Pharmaceutical Waste

Sajan

Naik²,

Girish

et al. 2017

Water Conserv Sci Eng

View full text Add to dashboard Cite

Template-free processing of Ag-anchored ZnO polyscale sheets was successfully synthesized using the onepot hydrothermal technique. The characterization of the synthesized samples was done using powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, UV-vis spectroscopy, and X-ray photoelectron spectroscopy. The photocatalytic degradation of organics present in pharmaceutical waste on exposure to sunlight and UV light confirms the photocatalytic degradation efficiency of the synthesized samples. The effectiveness of the degradation was measured based on the chemical oxygen demand and percent decomposition of the organics present in the pharmaceutical waste. Our studies revealed that the photodegradation efficiency of the samples varies with added amounts of Ag content. The maximum photocatalytic degradation efficiency was obtained using 2% Ag-deposited ZnO polyscale sheets (2AZ), where the rates of decomposition were 77.8% under sunlight and 76% under UV light.

show abstract

Plasma enhanced-CVD of undoped and fluorine-doped Co3O4 nanosystems for novel gas sensors

Cited by 56 publications

References 43 publications

Fluorine-Doped Iron Oxide Nanomaterials by Plasma Enhanced-CVD: An XPS Study

Fluorine-Doped Iron Oxide Nanomaterials by Plasma Enhanced-CVD: An XPS Study

Chemical Vapour Deposition of Gas Sensitive Metal Oxides

Template-Free Processing of Ag-Anchored ZnO Polyscale Sheets and Their Application in the Photocatalytic Degradation of Organics Present in Pharmaceutical Waste

Contact Info

Product

Resources

About