Table 1 Comparison of the catalytic reduction of MO, CV and K3[Fe(CN)6] by using Gl-Cs/CuO-NiO hydrogel in the presence of NaBH4 with other reported catalysts.

From: Metal nanocomposite supported on gelatin chitosan hydrogel as a catalyst for the removal of toxins

Pollutant

Catalyst

Time (s)

Rate constant (s−1)

Reference

MO

Gl-Cs/CuO-NiO hydrogel

180

1.16 × 10−2

This study

MO

Ni/Cs@CMC/CuO-Co2O3

120

1.06 × 10−2

24

MO

Cu/CSA

600

2.7 × 10−2

34

MO

Ag@rGO

120

1.81 × 10−3

35

MO

Ag-NiO2@PVA

1200

1.0 × 10−2

36

CV

Gl-Cs/CuO-NiO hydrogel

28

3.36 × 10−1

This study

CV

g-CN decorated with AgNPs

480

9.62 × 10−3

37

CV

FeNPs

600

-

33

K3[Fe(CN)6]

Gl-Cs/CuO-NiO hydrogel

30

3.4 × 10−2

This study

K3[Fe(CN)6]

SA/Na-CMC/GA

40

3.8 × 10−2

38

K3[Fe(CN)6]

SnLa2O5/CMC-Alg

240

1.24 × 10−2

39

K3[Fe(CN)6]

CA-CMC/Fe2O3-NiO

30

4.82 × 10−2

40