Antibacterial, magnetic, optical and humidity sensor studies of β-CoMoO 4 - Co 3 O 4 nanocomposites and its synthesis and characterization

Amanulla, A. Mobeen; Shahina, Sk. Jasmine; Sundaram, R.; Magdalane, C. Maria; Kaviyarasu, K.; Letsholathebe, Douglas; Mohamed, S. Beer; Kennedy, J.; Mâaza, M.

doi:10.1016/j.jphotobiol.2018.04.034

Cited by 165 publications

(14 citation statements)

References 44 publications

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“…For Cu 0.4 Co 0.6 MoO 4 /g-C 3 N 4 , the bands in the range of 1240-1640 cm −1 correspond to the bonds of pure g-C 3 N 4 . In contrast, the bands at 937, 615, and 475 cm −1 are assigned to the stretching vibrations of the t-MoO 4 group, Mo=O stretching, and Mo-O-Mo bending vibrations [24][25][26]. This result further confirms that Cu 0.4 Co 0.6 MoO 4 nanorods were successfully loaded onto g-C 3 N 4 .…”

Section: Resultssupporting

confidence: 55%

Cu0.4Co0.6MoO4 Nanorods Supported on Graphitic Carbon Nitride as a Highly Active Catalyst for the Hydrolytic Dehydrogenation of Ammonia Borane

Liao

et al. 2019

Catalysts

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As a typical chemical hydride, ammonia borane (AB) has received extensive attention because of its safety and high hydrogen storage capacity. The aim of this work was to develop a cost-efficient and highly reactive catalyst for hydrolyzing AB. Herein, we synthesized a series of CuxCo1–xMoO4 dispersed on graphitic carbon nitride (g-C3N4) to dehydrogenate AB. Among those CuxCo1–xMoO4/g-C3N4 catalysts, Cu0.4Co0.6MoO4/g-C3N4 exhibited the highest site time yield (STY) value of 75.7 m o l H 2 m o l c a t − 1 m i n − 1 with a low activation energy of 14.46 kJ mol−1. The STY value for Cu0.4Co0.6MoO4/g-C3N4 was about 4.3 times as high as that for the unsupported Cu0.4Co0.6MoO4, indicating that the g-C3N4 support plays a crucial role in improving the catalytic activity. Considering its low cost and high catalytic activity, our Cu0.4Co0.6MoO4/g-C3N4 catalyst is a strong candidate for AB hydrolysis for hydrogen production in practical applications.

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Section: Resultssupporting

confidence: 55%

Cu0.4Co0.6MoO4 Nanorods Supported on Graphitic Carbon Nitride as a Highly Active Catalyst for the Hydrolytic Dehydrogenation of Ammonia Borane

Liao

et al. 2019

Catalysts

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“…4). Infrared spectra show the presence of the Mo-O-Mo stretching vibration bands observed at 950 and 911 cm −1 [19,20].The band located at 856 cm −1 is associated with the vibration mode of the Mo-O band [21]. Thus, the bands observed at 744 and 710 cm −1 are associated with the vibration of the Mg-O band [22], the band at 495 cm −1 is specific to the vibrations of the Co-O-Mo band [23].…”

Section: Infrared Spectroscopy (Ft-ir)mentioning

confidence: 99%

Structural, morphological and optical properties of cobalt-substituted MgMoO4 ceramics prepared by pyrolysis of citric acid precursors

Lakhlifi

Jabbar

Ouatib

et al. 2020

Surfaces and Interfaces

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Magnesium-cobalt molybdate composites (Mg 1-x Co x MoO 4 : x = 0, 0.3, 0.4, 0.6, 0.8 and 1) were successfully synthesized through a facile sol-gel synthesis at low temperature, and characterized by thermogravimetric and differential thermal analysis (TG-DTA), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscopy (SEM), UV-Vis spectroscopy and colorimetric measurements using the CIE L*a*b* colour system. The surface specific area was calculated using the Brunauer-Emmett-Teller analysis in the adsorption/desorption isotherm. The examination of the X-ray diffractograms of the unground milled solid solutions of Mg 1-x Co x MoO 4 (0 ≤ x ≤ 1) presented a single continuous system related to monoclinic β-MgMoO 4 . The absorbance spectra of the Mg 1-x Co x MoO 4 pigments confirmed the insertion of cobalt in the β-MgMoO 4 matrix. The CIE-L*a*b* colour coordinates indicated that the intense purple colour was obtained for x = 0.6.

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“…Several methods have been attempted to prepare NiO NPs [8][9][10][11][12], but many come with disadvantages because the process is complicated and consumes large amounts of energy to induce a large amount of carbon. Although some methods have been reported as synthesizing them while decreasing consumption energy [8], there are still issues, including the limitation of manufacturing capacity for use in production lines, etc.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Nickel Oxide Nanoparticles Synthesized under Low Temperature

et al. 2021

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In this study, ultrafine nickel oxide nanoparticles (NiO NPs) were well synthesized using a simple wet chemical method under low temperature, 300 °C. An Ni(OH)2 precursor was well precipitated by dropping NH4OH into an Ni(Ac)2 solution. TG-DTA showed that the weight of the precipitate decreases until 300 °C; therefore, the precursor was heat-treated at 300 °C. X-ray diffraction (XRD) patterns indicated that hexagonal-structured NiO NPs with (200) preferred orientation was synthesized. In addition, BET specific surface area (SSA) and HRTEM analyses revealed that spherical NiO NPs were formed with SSA and particle size of 60.14 m2/g and ca. 5–15 nm by using the low temperature method. FT-IR spectra of the NiO NPs showed only a sharp vibrating absorption peak at around 550 cm−1 owing to the Ni-O bond. Additionally, in UV-vis absorption spectra, the wavelength for absorption edge and energy band gap of the ultrafine NiO NPs was 290 nm and 3.44 eV.

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Antibacterial, magnetic, optical and humidity sensor studies of β-CoMoO 4 - Co 3 O 4 nanocomposites and its synthesis and characterization

Cited by 165 publications

References 44 publications

Cu0.4Co0.6MoO4 Nanorods Supported on Graphitic Carbon Nitride as a Highly Active Catalyst for the Hydrolytic Dehydrogenation of Ammonia Borane

Cu0.4Co0.6MoO4 Nanorods Supported on Graphitic Carbon Nitride as a Highly Active Catalyst for the Hydrolytic Dehydrogenation of Ammonia Borane

Structural, morphological and optical properties of cobalt-substituted MgMoO4 ceramics prepared by pyrolysis of citric acid precursors

Characterization of Nickel Oxide Nanoparticles Synthesized under Low Temperature

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