1. Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong
2. School of Materials Science and Engineering, Yeungnam University, Gyeongsan 712749, South Korea
3. School of Chemical Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
4. School of Science and Technology, University of New England, Armidale, NSW 2351, Australia
5. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
6. Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
7. Institute of Nanomaterials Research and Innovation for Energy (IN-RIE), NANOTEC-KKU RNN on Nanomaterials Research and Innovation for Energy, Khon Kaen University, Khon Kaen 40002, Thailand