1. Key
Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, P. R. China
2. School
of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, P. R. China
3. Production Technology Institute, Shengli Oilfield, Dongying, 257000, P. R. China
4. Department
of Chemistry, University of Houston, Houston, Texas 77204, United States