1. College of Chemistry and Materials Engineering, Institute of New Materials and Industrial Technologies Wenzhou University Wenzhou Zhejiang 325035 China
2. Department of Chemical Engineering University of Waterloo Waterloo Ontario Canada
3. Centre for Functional Nanomaterials Brookhaven National Laboratory Upton NY USA
4. X-Ray Science Division Argonne National Laboratory Lemont IL 60439 USA
5. Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 P. R. China
6. Chemical Sciences and Engineering Division Argonne National Laboratory Lemont IL 60439 USA