Skip to content

Research at St Andrews

Microplasma-assisted electrochemical synthesis of Co3O4 nanoparticles in absolute ethanol for energy applications

Research output: Contribution to journalArticle

DOI

Open Access Status

  • Embargoed (until 27/03/19)

Author(s)

Chengsheng Ni, Darragh Carolan, Conor Rocks, Jianing Hui, Zeguo Fang, Dilli Babu Padmanaban, Jiu-Pai Ni, Deti Xie, Paul Maguire, John T. S. Irvine, Davide Mariotti

School/Research organisations

Abstract

Plasma at the gas/liquid interface can promote a complex mixture of reactions in solution and microplasma-assisted direct-current anodic oxidation is an efficient and green process in synthesising nanoscale materials for various applications. In this study, we demonstrated the direct synthesis of crystalline Co3O4 quantum dots, ca. 2-5 nm in size, by direct anodization of Co foil with charge balanced by the microplasma at the flowing-helium/pure-ethanol interface under ambient condition. The anodic oxidation of cobalt in ethanol was analysed after characterising the solution using nuclear magnetic resonance (NMR), light absorption, photoluminescence (PL), and the solid product using X-ray photoemission spectroscopy (XPS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Using the microplasma with high voltage under ambient condition, ethanol was oxidised to acetate as the charge carrier and the size of Co3O4 quantum dots can be controlled by the limiting current. The quantum dots from this method are well dispersed in ethanol and a dense coating for light absorption and a rectified diode can be processed directly from the suspension. These results reveals that microplasma-assisted anodisation in ethanol is an efficient and green route capable of manufacturing quantum dots at low-temperature and avoiding the use of extraneous ionic salts in electrolyte.
Close

Details

Original languageEnglish
Pages (from-to)2101-2109
Number of pages9
JournalGreen Chemistry
Volume20
Issue number9
Early online date27 Mar 2018
DOIs
StatePublished - 7 May 2018

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. A novel in situ diffusion strategy to fabricate high performance cathodes for low temperature proton-conducting solid oxide fuel cells

    Hou, J., Miao, L., Hui, J., Bi, L., Liu, W. & Irvine, J. T. S. 14 Jun 2018 In : Journal of Materials Chemistry A. 6, 22, p. 10411-10420 10 p.

    Research output: Contribution to journalArticle

  2. Mechanism of enhanced performance on a hybrid direct carbon fuel cell using sawdust biofuels

    Li, S., Jiang, C., Liu, J., Tao, H., Meng, X., Connor, P., Hui, J., Wang, S., Ma, J. & Irvine, J. T. S. 15 Apr 2018 In : Journal of Power Sources. 383, p. 10-16 7 p.

    Research output: Contribution to journalArticle

  3. Metal-oxide interactions for infiltrated Ni nanoparticles on A-site deficient LaxSr1 − 3x/2TiO3

    Hui, J., Neagu, D., Miller, D. N., Yue, X., Ni, C. & Irvine, J. T. S. Feb 2018 In : Solid State Ionics. 315, p. 126-130 5 p.

    Research output: Contribution to journalArticle

  4. Promoting photocatalytic H2 evolution by tuning cation deficiency in la and Cr co-doped SrTiO3

    Hui, J., Zhang, G., Ni, C. & Irvine, J. T. S. 16 Sep 2017 In : Chemical Communications. 53, 72, p. 10038-10041 4 p.

    Research output: Contribution to journalArticle

  5. Uniformly dispersed CdS/CdSe quantum dots co-sensitized TiO2 nanotube arrays with high photocatalytic property under visible light

    Liu, L., Hui, J., Su, L., Lv, J., Wu, Y. & Irvine, J. T. S. 1 Oct 2014 In : Materials Letters. 132, p. 231-235 5 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Evaluating polymer-supported isothiourea catalysis in industrially-preferable solvents for the acylative kinetic resolution of secondary and tertiary heterocyclic alcohols in batch and flow

    Guha, N., Neyya Ppadath, R. M., Greenhalgh, M., Chisholm, R., Smith, S., McEvoy, M., Rodríguez-Escrich, C., Young, C. M., Pericas, M. A., Hähner, G. & Smith, A. D. 24 Aug 2018 In : Green Chemistry. In press

    Research output: Contribution to journalArticle

  2. A new route to α,ω-diamines from hydrogenation of dicarboxylic acids and their derivatives in the presence of amines

    Shi, Y., Kamer, P. C. J. & Cole-Hamilton, D. J. 11 Oct 2017 In : Green Chemistry. 19, p. 5460-5466

    Research output: Contribution to journalArticle

  3. Phenolic acetals from lignins of varying compositions via iron(III) triflate catalysed depolymerisation

    Deuss, P. J., Lancefield, C. S., Narani, A., de Vries, J. G., Westwood, N. J. & Barta, K. 21 Jun 2017 In : Green Chemistry. 19, 12, p. 2774-2782

    Research output: Contribution to journalArticle

  4. Pre-treatment of lignocellulosic feedstocks using biorenewable alcohols: towards complete biomass valorisation

    Lancefield, C. S., Panovic, I., Deuss, P. J., Barta, K. & Westwood, N. J. 7 Jan 2017 In : Green Chemistry. 19, 1, p. 202-214 13 p.

    Research output: Contribution to journalArticle

ID: 252838241