[1] North Univ China, Sch Chem Engn & Technol, Taiyuan 030051, Shanxi, Peoples R China
[2] Xizang Minzu Univ, Sch Management, Xianyang 712082, Peoples R China
[3] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Fujian, Peoples R China