Controlled continuous hydrothermal synthesis of cobalt oxide (Co3O4) nanoparticles

Lester, Edward; Aksomaityte, Gabriele; Li, Jun; Gómez, Sara; Gonzalez-Gonzalez, Jose; Poliakoff, Martyn

doi:10.1016/j.pcrysgrow.2011.10.008

Cited by 81 publications

(52 citation statements)

References 33 publications

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“…8) Further, it is reported that nano ower-shaped Co 3 O 4 particles show highly reversible lithium storage capability by Chen et al The nano ower was synthesized by way of thermal treatment of the ower-shaped precursor obtained by a solvothermal method. 21) Co 3 O 4 nanocubes, [29][30][31] nanosheets, [32][33][34] nanorings, 35) nanowires, 8,36) nanospheres, 37) and nanoparticles [38][39][40] 43) However, all the approaches have been carried out at low concentrations so that to prevent the aggregation between the particles among the growth process (0.001 0.1 mol/L). For the practical usage of Co 3 O 4 -based nanomaterials, development of a liquid-phase direct synthetic process of Co 3 O 4 nanoparticles under a highly concentrated condition to obtain the desired particles in large quantity.…”

Section: Introductionmentioning

confidence: 99%

Direct Hydrothermal Synthesis of Size-Controlled Co3O4 Nanocubes under Highly Condensed Conditions

2017

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Cobalt oxide (Co 3 O 4 ) nanocubes with high crystallinity and a narrow size distribution have been synthesized in one pot process under highly condensed hydrothermal reactions using cobalt(II) nitrate (Co(NO 3 ) 2 ) and sodium hydroxide or tetramethylammonium hydroxide. The particle morphology was controlled to a cubic shape by change in the initial pH. The particle mean diameter was also gradually controlled by the change in the initial pH in the range from 18 nm to 66 nm. Co(OH) 2 hexagonal thin platelet particles were obtained as the predominant product when CoSO 4 , CoCl 2 , and Co(CH 3 COO) 2 were used as the Co-source. The result indicated that oxidation ability of nitrate anions played an important role to obtain the Co 3 O 4 nanocubes in the one pot process.

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Section: Introductionmentioning

confidence: 99%

Direct Hydrothermal Synthesis of Size-Controlled Co3O4 Nanocubes under Highly Condensed Conditions

2017

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“…It is characterized by excellent reproducibility and microstructure control (Lester et al, 2012;Wang, Tang, Lester, & O'Hare, 2013;Yoshimura & Byrappa, 2008). Nanoparticle surface properties can be altered from hydrophilic to hydrophobic and vice versa by the proper selection of surface-coating agents in hydrothermal synthesis (Yoshimura & Byrappa, 2008).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and surface modification of nanophosphorous-based flame retardant agent by continuous flow hydrothermal synthesis

Elbasuney¹,

Mostafa²

2015

Particuology

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“…18 Lestera et al synthesised surfactant-free cobalt oxide nanoparticles on large scale using continuous-flow hydrothermal reactor. 19 We were thus intrigued to read of a salt-mediated synthesis for the preparation of cobalt oxide nanocubes 20 in the size range of 10 nm to 25 nm, but in our hands the yields were unsatisfactorily low. We now report on a modification of this method which allows the preparation of cobalt oxide nanoparticles in high yields.…”

Section: Introductionmentioning

confidence: 97%

Synthesis of Well-Defined, Surfactant-Free Co3O4 Nanoparticles: The Impact of Size and Manganese Promotion on Co3O4 Reduction and Water Oxidation Activity

et al. 2017

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A surfactant-free synthetic route has been developed to produce size-controlled, cubelike cobalt oxide nanoparticles of 3 different sizes in high yields. It was found that by using sodium nitrite as salt-mediating agent, near-quantitative yields could be obtained. The size of the nanoparticles could be altered from 11 nm to 22 nm by changing the cobalt concentration and reaction time. These surfactant-free nanoparticles form ideal substrates for facile deposition of further elements such as manganese. The effect of size of the cobalt oxide nanoparticles and the presence of manganese on the reducibility of cobalt oxide to metallic cobalt was investigated.Similarly, the effect of these parameters was investigated with a visible light promoted water oxidation system with cobalt oxide as catalyst, together with [Ru(bpy)3] 2+ light harvester dye and an electron acceptor.

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Controlled continuous hydrothermal synthesis of cobalt oxide (Co3O4) nanoparticles

Cited by 81 publications

References 33 publications

Direct Hydrothermal Synthesis of Size-Controlled Co<sub>3</sub>O<sub>4</sub> Nanocubes under Highly Condensed Conditions

Direct Hydrothermal Synthesis of Size-Controlled Co<sub>3</sub>O<sub>4</sub> Nanocubes under Highly Condensed Conditions

Synthesis and surface modification of nanophosphorous-based flame retardant agent by continuous flow hydrothermal synthesis

Synthesis of Well-Defined, Surfactant-Free Co3O4 Nanoparticles: The Impact of Size and Manganese Promotion on Co3O4 Reduction and Water Oxidation Activity

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