Advances in transition metal oxide catalysts for carbon monoxide oxidation: a review

Dey, Subhashish; Dhal, Ganesh Chandra; Mohan, Devendra; Прасад, Рам

doi:10.1007/s42114-019-00126-3

Cited by 69 publications

(37 citation statements)

References 133 publications

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“…According to Sato et al, carbon-supported metal-oxide composites show excellent electrocatalytic performance owing to the tuned electronic states of catalysts [50]. Therefore, combining carbon materials and metal oxides can enhance the catalytic process [51][52][53]. The synergistic effects of metal oxides and large-SSA carbon-based materials on electrocatalytic activities have been reported in many studies [54,55].…”

Section: Electrocatalytic Activitymentioning

confidence: 99%

Electrocatalytic Properties of a BaTiO3/MWCNT Composite for Citric Acid Detection

et al. 2022

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Although barium titanate (BaTiO3) shows prominent dielectric properties for fabricating electronic devices, its utilization in electrochemical applications is limited. Thus, this study examined the potential of a BaTiO3-based composite in the detection of a food additive, i.e., citric acid. First, a submicron-scale BaTiO3 powder was synthesized using the solution combustion method. Then, a BaTiO3/multiwalled carbon nanotube (MWCNT) composite was hydrothermally synthesized at BaTiO3:MWCNT mass ratios of 1:1 and 2:1. This composite was used as a working electrode in a nonenzymatic sensor to evaluate its electrocatalytic activity. Cyclic voltammetric measurements revealed that the BaTiO3/MWCNT composite (2:1) exhibited the highest electrocatalytic activity. Reduction reactions were observed at applied voltages of approximately 0.02 and −0.67 V, whereas oxidation reactions were detected at −0.65 and 0.47 V. With acceptable sensitivity, decent selectivity, and fair stability, the BaTiO3/MWCNT composite (2:1) showed good potential for citric acid detection.

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Section: Electrocatalytic Activitymentioning

confidence: 99%

Electrocatalytic Properties of a BaTiO3/MWCNT Composite for Citric Acid Detection

et al. 2022

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“…This work also found transitions to two lowlying electronic states of NiO2 with term energies of 0.40(2) and 0.77(3) eV. Subsequent anion PES work performed by Ramond et al 11 reexamined the ground state spectrum of NiO2 with improved resolution, yielding a refined EA of 3.043 (5) eV as well as the v1 symmetric stretch frequency of 745(30) cm -1 from a progression in this mode.…”

Section: Introductionmentioning

confidence: 81%

“…Nickel oxides are an important class of catalytic materials with a wide range of industrial applications including the formation of syngas, 1, 2 oxidative dehydrogenation of alkanes, 3,4 and carbon monoxide oxidation. 5 Therefore, understanding their properties is of both technological and fundamental importance. While much of the emphasis of nickel oxide catalysis involves condensed phase experiments, the gas phase study of isolated mass-selected metal oxide clusters provides a complementary molecular-level understanding of the structure and reactivity of these species.…”

Section: Introductionmentioning

confidence: 99%

Photoelectron spectroscopy of cryogenically cooled NiO2¯ via slow photoelectron velocity-map imaging

Babin

DeWitt

Lau

et al. 2022

Preprint

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High-resolution anion photoelectron spectra of cryogenically cooled NiO2¯ anions, obtained using slow photoelectron velocity-map imaging (cryo-SEVI), are presented in tandem with coupled cluster electronic structure calculations including relativistic effects. The experimental spectra encompass the , , and photodetachment transitions of linear ONiO0/-, revealing previously unobserved vibrational structure in all three electronic bands. The high-resolution afforded by cryo-SEVI allows for the extraction of vibrational frequencies for each state, congruent with those previously measured in the ground state and in good agreement with scalar-relativistic coupled-cluster calculations. Previously unobserved vibrational structure is observed in the and states and is tentatively assigned. Further, a refined electron affinity of 3.0464(7) eV for NiO2 is obtained as well as precise term energies for the and states of NiO2 of 0.3982(7) and 0.7422(10) eV, respectively. Numerous Franck-Condon forbidden transitions involving the doubly degenerate v2 bending mode are observed and ascribed to Herzberg-Teller coupling to an excited electronic state.

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“…Some of the sensors demonstrate high sensitivity towards 10-30% RH, below 30%RH, above 60%RH and elevated temperatures [6]. Ferrite-based sensors are efficient, non-toxic and economical candidates for humidity sensing applications and also used for broad scope of technological development [7][8][9][10][11][12][13][14][15][16][17]. Nickel ferrite, with inverse spinel structure, demonstrates a better electrical resistivity [18].…”

Section: Introductionmentioning

confidence: 99%

Ultra-sensitive behaviour of ruthenium-doped nickel ferrite thin film humidity sensor

Manikandan¹,

Sikarwar

Yadav

et al. 2021

Journal of Experimental Nanoscience

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Chemical sensors of homogenous particles, act as active centres, are envisaged for adsorption/desorption of water molecules. The adsorption/desorption of water molecules are lined up with surface of the sensor device. The sensor material was prepared via efficient chemical co-precipitation method. The ruthenium-doped nickel ferrite sensor endows ultra-sensitivity for humidity i.e. 4.04 and 4.37 4.04 MX/% relative humidity at low-and mid-range, respectively with rapid response/recovery time of 35/148 s.

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Advances in transition metal oxide catalysts for carbon monoxide oxidation: a review

Cited by 69 publications

References 133 publications

Electrocatalytic Properties of a BaTiO3/MWCNT Composite for Citric Acid Detection

Electrocatalytic Properties of a BaTiO3/MWCNT Composite for Citric Acid Detection

Photoelectron spectroscopy of cryogenically cooled NiO2¯ via slow photoelectron velocity-map imaging

Ultra-sensitive behaviour of ruthenium-doped nickel ferrite thin film humidity sensor

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