College of Chemistry and Chemical Engineering;
State Key Laboratory of Bio-fibers and Eco-textiles;
Qingdao University;
Qingdao 266071;
China;
Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals;
Institute of Analysis;
Guangdong Academy of Sciences;
Guangzhou 510070;
China;
Electrochemical oxidation; HMF; FDCA; Co_(3)O_(4); Nitrogen doping;