1. Energy Safety Research Institute, Swansea University, Bay Campus, Swansea, SA1 8EN, UK
2. CGG, Tyn-y-Coed, Pentywyn Road, Llandudno, LL30 1SA, UK
3. School of Management, Swansea University, Bay Campus, Swansea, SA1 8EN, UK
4. Department of Chemistry and Department of Materials Science and Nanoengineering, Rice University, Houston, TX 77005, USA
5. Faculty of Engineering, Universiti Teknologi Brunei, Brunei Darussalam