1. Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK
2. Department of Mechanical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, UK
3. Department of Architecture & Civil Engineering, University of Bath, Claverton Down, Bath BA2 7AY, UK
4. EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, Scotland EH9 3JF, UK
5. Department of Chemistry, Swansea University, College of Science, Grove Building, Singleton Park, Swansea SA2 8PP, UK
6. University of Bath, Materials & Chemical Characterisation Facility, MC2, UK
7. HarwellXPS, Research Complex at Harwell, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, OX11 0FA, UK
8. Stephenson Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Liverpool L69 7ZF, UK
9. The Faraday Institution, Harwell Campus, Didcot, OX11 0RA, UK
10. Schlumberger Cambridge Research, High Cross, Madingley Road, Cambridge CB3 0EL, UK
11. Central Laser Facility, Research Complex at Harwell, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 OQX, UK