Table 1 A comparison between Au-Nu with other reported QCM sensors for Hg0 vapor detection at 35 °C.

From: Ordered Monolayer Gold Nano-urchin Structures and Their Size Induced Control for High Gas Sensing Performance

Sensing material

LOD (μg/m3)

Sensing Temp. (°C)

Au film64

537

NR

Au film65

80

NR

palladium (II) chloride and tetra-hydroxyethyl-ethylene-diamine (THEED)66

1790

NR

Au coated nano templates of molybdenum oxide (MoO3)67

4390

36

Ag film58

1020

40

Polypyrrole (PPy) nanofibers loaded with PPy/Pd(O2CCH3)2)/(PPy/Pd(NO3)2)68

1020

30

Au nanoprisms61

21

30

Ni/Au galvanically replaced thin films63

103

90

Pd/Au galvanically replaced thin films69

34.2

28

Au nanospikes42

22

28

Au nanosphere monolayers20

27

30

Au/Ag galvanically replaced nanowire monolayers70

39

30

53

75

Au-Nu monolayer (This work)

16

30

32

75

  1. NR: Not reported.