Inbuilt self-cascade catalysis of the bimetal-confined structural nanozyme CoNi@CNTs-N/GO for increased bienzymatic activity and H2O2-free smartphone-based visual assay of total antioxidant capacity in foods

Hailong Gong, Xiaofeng Hou, Binrong Li, Siyu Shen, Chen Wang, Qinqin Ma, Tingting Liu, Xuedong Wang