A bismuth oxide nanoplate-based carbon dioxide gas sensor

Bhande, Sambhaji S.; Mane, Rajaram S.; Ghule, Anil V.; Han, Sung‐Hwan

doi:10.1016/j.scriptamat.2011.09.022

Cited by 90 publications

(40 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bismuth oxide (Bi 2 O 3 ) is an important semiconductor material because it possesses very attractive physical properties such as significant band-gaps that leads to excellent photocatalytic performance (2.85 and 2.58 eV for monoclinic α-Bi 2 O 3 and tetragonal β-Bi 2 O 3 phases, respectively) [4], high refractive index, dielectric permittivity, remarkable photoconductivity and photoluminescence [5,6],These properties have made it very suitable for the large-scale applications such as gas sensors [7], optical coatings [8,9], capacitors [10], catalysts [11], fuel cells [12], photovoltaic cells and microwave integrated circuits [13,14]. To date, many Bi 2 O 3 micro-and nanostructures have been successfully synthesized, including nanofibers [15], nanobelts [16], nanowires [17], nanoflakes [18], microrods [19], particles(plates, block) [20] and thin films [21].…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of rod-like Bi 2 O 3 nanoparticles as an electrode material for pseudocapacitors

Huang

Zhang

Tan

et al. 2016

Ceramics International

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Facile synthesis of rod-like Bi 2 O 3 nanoparticles as an electrode material for pseudocapacitors

Huang

Zhang

Tan

et al. 2016

Ceramics International

View full text Add to dashboard Cite

“…In particular, works related to bismuth oxide (Bi 2 O 3 ) have doubled in the last decade, thus reflecting the scientific, technological, and industrial importance of this compound. Its peculiar properties, including a large energy gap, a high refractive index and dielectric permittivity, and good photoconductivity [1][2][3][4][5][6], have made Bi 2 O 3 suitable for a large range of applications, such as optical coatings, photovoltaic cells, microwave integrated circuits, fuel cells, oxygen sensors, oxygen pumps, and catalytic activity [3,[7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

β−Bi2O3under compression: Optical and elastic properties and electron density topology analysis

et al. 2016

View full text Add to dashboard Cite

We report a joint experimental and theoretical study of the optical properties of tetragonal bismuth oxide (β-Bi 2 O 3 ) at high pressure by means of optical absorption measurements combined with ab initio electronic band structure calculations. Our results are consistent with previous results that show the presence of a second-order isostructural phase transition in Bi 2 O 3 (from β to β ) around 2 GPa and a phase transition above 15 GPa combined with a pressure-induced amorphization above 17-20 GPa. In order to further understand the pressure-induced phase transitions and amorphization occurring in β-Bi 2 O 3 , we theoretically studied the mechanical and dynamical stability of the tetragonal structures of β-and β -Bi 2 O 3 at high pressure through calculations of their elastic constants, elastic stiffness coefficients, and phonon dispersion curves. The pressure dependence of the elastic stiffness coefficients and phonon dispersion curves confirms that the isostructural phase transition near 2 GPa is of ferroelastic nature. Furthermore, a topological study of the electron density shows that the ferroelastic transition is not caused by a change in number of critical points (cusp catastrophe), but by the equalization of the electron densities of both independent O atoms in the unit cell due to a local rise in symmetry. Finally, from theoretical simulations, β -Bi 2 O 3 is found to be mechanically and dynamically stable at least up to 26.7 GPa under hydrostatic conditions; thus, the pressure-induced amorphization reported above 17-20 GPa in powder β -Bi 2 O 3 using methanol-ethanol-water as pressure-transmitting medium could be related to the frustration of a reconstructive phase transition at room temperature and the presence of mechanical or dynamical instabilities under nonhydrostatic conditions.

show abstract

“…Over the past few years, considerable interest has been focused on the synthesis of bismuth oxide (Bi 2 O 3 ) because it can be used in many fields such as gas sensors [1,2], optical coatings [3,4], solid oxide fuel cells [5], catalysts [6,7], and electrochemical supercapacitors [8,9]. Consequently, various methods including chemical bath deposition method [10], gel to crystal conversion route [11], electrodeposition route [9], MOCVD technique [12], template-based heat treatment method [13], etc.…”

Section: Introductionmentioning

confidence: 99%

Novel Bi2O3 nanoporous film fabricated by anodic oxidation and its photoelectrochemical performance

Zhao

Wang

et al. 2013

J Solid State Electrochem

View full text Add to dashboard Cite

Novel bismuth oxide (Bi 2 O 3 ) nanoporous films were fabricated through anodization of bismuth foil in electrolytes containing glycol, ammonium sulfate ((NH 4 ) 2 SO 4 ) and deionized (DI) water. Scanning electron microscopy analysis indicated that morphology of the anodized bismuth foil changed markedly along with the changing of oxidation time, water content, electrolyte concentration, temperature, and applied voltages. The optimized morphology was obtained when bismuth was anodized at 20 V, 40°C for 40 min in glycol solution containing 0.3 wt% (NH 4 ) 2 SO 4 and 5 wt% DI water. The composition and crystal structure of the samples formed in the optimized conditions were characterized by energy-dispersive spectroscopy and X-ray diffraction. Results showed that the as-prepared nanoporous structures were amorphous. β-Bi2O3 was obtained when the samples were annealed at 200°C. The photocurrent response experiments demonstrated that the Bi 2 O 3 nanoporous film can generate photocurrent as large as 2.893 and 6.980 μA/cm 2 under 0 and 0.5 V bias voltage versus saturated calomel electrode, respectively.

show abstract

A bismuth oxide nanoplate-based carbon dioxide gas sensor

Cited by 90 publications

References 18 publications

Facile synthesis of rod-like Bi 2 O 3 nanoparticles as an electrode material for pseudocapacitors

Facile synthesis of rod-like Bi 2 O 3 nanoparticles as an electrode material for pseudocapacitors

β−Bi2O3under compression: Optical and elastic properties and electron density topology analysis

Novel Bi2O3 nanoporous film fabricated by anodic oxidation and its photoelectrochemical performance

Contact Info

Product

Resources

About