Table 1 Comparison of graphene reduction by different biological reducing agents.

From: Rapid synthesis and decoration of reduced graphene oxide with gold nanoparticles by thermostable peptides for memory device and photothermal applications

Bio-reducing Material

Reduction Condition

ID/IG ratio

Doping

Reference

Amino Acid

L-Glutathione

50 °C, 6 h

39

L-Cysteine

NaOH, RT, 72 h

1.17

Adsorbed

37

Glycine

95 °C, 36 h

1.09

N-doped

41

L-Lysine

95 °C, 9 h

1.11

N-doped

42

Microorganisms

Shewanella

Anaerobic, 72 h/Aerobic, 60 h

Adsorbed

41, 44

E. coli

37 °C, 48 h

0.97

21

Plant Extracts

Tea polyphenols

90 °C, 2.5 h

Adsorbed

45

R. damascena

95 °C, 5.5 h

1.09

Adsorbed

46

β carotene

95 °C, 24 h.

1.01

47

Proteins

Bovine serum albumin

NaOH, 55–90 °C, 3–24 h

Adsorbed

20

Hormone (Melatonin)

NH3, 80 °C, 3 h

Adsorbed

48

Thermostable Peptide (Nisin)

121 °C, 15 min

1.22

Adsorbed

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