1. Institute of Materials Research and Engineering; A*STAR; 2 Fusionopolis Way, Innovis Singapore 138634 Singapore
2. School of Chemical Engineering and Technology; Xi'an Jiaotong University; Xi'an Shaanxi 710049 China
3. School of Energy and Chemical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
4. Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
5. International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province; Shenzhen University; Shenzhen 518060 China
6. Singapore Synchrotron Light Source; National University of Singapore; Singapore 117603 Singapore
7. Department of Chemical and Biomolecular Engineering; National University of Singapore; 10 Kent Ridge Crescent Singapore 119260 Singapore