Comparing catalytic activities to the 4-NP reduction by catalysts.

Catalysts	Catalyst (mg)	k a (s−1)	k/Mb (s−1 g−1)
p(AMPS)-Co46	50	2 × 10−3	0.04
p(AMPS)-Ni47	50	9.38 × 10−4	0.019
TAC-Ag-1.0 (ref. 48)	4.0	5.19 × 10−3	1.3
Ag/C spheres49	1.0	1.69 × 10−3	1.69
Fe3O4@SiO2–Ag50	1.0	7.67 × 10−3	7.67
p(AMPS)-Cu51	10	1.72 × 10−3	0.172
CoMn2O4/APTPOSS@FPS	1.0	1.83 × 10−2	18.3

^aThe reaction rate constant.

^bThe reaction rate constant per total weight of catalyst used.