1. School of Chemical Engineering Key Laboratory of Green Chemistry and Technology of Ministry of Education and State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P. R. China
2. Australian Carbon Materials Centre (A‐CMC) School of Chemical Engineering University of New South Wales Sydney NSW 2052 Australia
3. Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction Hong Kong University of Science and Technology Clear Water Bay Kowloon 999077 Hong Kong
4. National Synchrotron Light Source II Brookhaven National Lab Suffolk Upton NY 11973 USA