1. School of Chemical Engineering, Northwest Minzu UniversityKey Laboratory for Utility of Environment‐Friendly Composite Materials and Biomass in University of Gansu Province Lanzhou P. R. China
2. School of Materials Science and EngineeringLanzhou Jiaotong University Lanzhou P. R. China
3. Institute of Soil, Fertilizer and Water‐saving AgricultureGansu Academy of Agricultural Sciences Lanzhou P. R. China
4. CAS Key Laboratory of Bio‐based Materials, Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences Qingdao P. R. China