a
College of Chemistry and Environmental Science, Key Laboratory of Green Chemical Media and Reactions of Ministry of Education, Henan Normal University, Xinxiang 453007, China
E-mail: quguir@sina.com
;
Fax: +86 373 3329276
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Tel: +86 373 3329255
b
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China