1. Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong ProvinceSchool of Environmental Science and EngineeringQingdao University Qingdao 266071 P. R. China
2. Canadian Light Source Saskatoon S7N 0X4 Canada
3. State Key Laboratory of Coal ConversionInstitute of Coal ChemistryChinese Academy of Science Taiyuan 030001 P. R. China
4. College of Chemical and Environmental EngineeringShandong University of Science and Technology Qingdao 266590 P. R. China