During the course of my research I have become familiar with several analytical techniques including: X-ray diffraction (XRD); secondary ion mass spectrometry (SIMS); Raman spectroscopy; UV-vis spectroscopy; X-ray photoelectron spectroscopy (XPS); contact angle measurement; energy dispersive analysis of X-rays (EDAX); wavelength dispersive analysis of X-rays (WDAX); scanning electron microscopy (SEM); transmission electron microscopy (TEM) and atomic force microscopy (AFM). I also have a good working knowledge of the building modelling software Energy PlusTM.

I have taken part in several outreach programs helping to disseminate scientific research and ideas to a wider audience. This included performing practical demonstrations to a range of audiences, whether close-up (e.g. at the Wellcome Trust Elements events and at Bestival music festival) or in large auditoriums (e.g. at the Royal Institute Family Fun Day). I am also a member of the American Vacuum Society.

I am an inorganic materials chemist. My research focuses on the development of novel materials for photocatalytic water splitting for the production of hydrogen. I spent two years researching photoactive semiconductor materials at University of Padova, Italy focusing primarily on the synthesizing Fe2O3 nanostructures and analysing their potential for water splitting. My current research focuses on the production of biphasic Janus type nanocomposites for solar energy harvesting. These photocatalysts are uniquely built by sequentially depositing specific photocatalytic layers onto removable substrates and then dissolving the substrate away, fracturing the sheets into particles. The marriage of an oxygen catalyst (Fe2O3) and a hydrogen catalyst are hoped to form excellent water-splitting photocatalysts leading to highly efficient green hydrogen production direct from sunlight.

Areas of Expertise

  • Photocatalysis
  • Water Splitting
  • Materials Chemistry
  • Chemical Vapour Deposition
  • Hydrogen Production

Publications

  1. Chen, S., Wang, J., Zhang, Z., Briscoe, J., Warwick, M., Li, H., Hu, P. Aerosol assisted chemical vapour deposition of conformal ZnO compact layers for efficient electron transport in perovskite solar cells Materials Letters 217 251 254
  2. Carraro, G., Maccato, C., Gasparotto, A., Warwick, M., Sada, C., Turner, S., Bazzo, A., Andreu, T., Pliekhova, O., Korte, D., Lavrenčič Štangar, U., Van Tendeloo, G., Morante, J., Barreca, D. Hematite-based nanocomposites for light-activated applications: Synergistic role of TiO2 and Au introduction Solar Energy Materials and Solar Cells 159 456 466
  3. Warwick, M., Ridley, I., Binions, R., Warwick, M. Variation of Thermochromic Glazing Systems Transition Temperature, Hysteresis Gradient and Width Effect on Energy Efficiency Buildings 6 2 22
  4. Chen, S., Warwick, M., Binions, R. Effects of film thickness and thermal treatment on the structural and opto-electronic properties of Ga-doped ZnO films deposited by sol–gel method Solar Energy Materials and Solar Cells 137 202 209
  5. Warwick, M., Barreca, D., Bontempi, E., Carraro, G., Gasparotto, A., Maccato, C., Kaunisto, K., Ruoko, T., Lemmetyinen, H., Sada, C., Goenuellue, Y., Mathur, S., Warwick, M. Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state Phys. Chem. Chem. Phys. 17 19 12899 12907

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Career History

Start Date End Date Position Held Location
January 2017 Present MSCA Cofund Fellow Swansea Unversity
June 2016 January 2017 Research Fellow University of Salford
March 2016 July 2016 Visiting Researcher Queen Mary University of London
February 2014 February 2016 Postdoctoral Research Associate Padova University and INSTM
September 2009 February 2014 PhD Student in Inorganic Materials Chemistry University College London
September 2005 August 2009 Masters in Science UCL

Memberships

  • American Chemical Society (ACS)
  • Royal Society of Chemistry (RSC)
  • Society of Chemical Industry (SCI)
  • American Vacuum Society (AVS)

Current Research

Project: Solar Energy Harvesting and Hydrogen Production as Green Feedstock for “CO2 to Fuels”

My current research looks at the preparation of composite materials for solar energy harvesting and production of hydrogen. Using a novel sequential layer deposition method and employing soluble substrates allows for specialist photocatalysts consisting of nanoparticles that incorporate both a hydrogen and oxygen catalyst to be created i.e. a Janus like particle: a single particle with two different chemical properties on separate faces.

Research Warwick

Aims and Objectives

1. To synthesise a series of biphasic Janus-like materials each containing iron oxide and another phase.

2. To characterise and assess each set of particles for their water-splitting abilities in comparison with each other as well as with photocatalytic materials developed inside the sustainable hydrogen innovation and technology group and beyond.

3. To produce novel materials with exciting photocatalytic properties that efficiently split water into hydrogen and oxygen such that the hydrogen can be used for the creation of carbon-based fuels and the removal of CO2 from the atmosphere.