“…[1][2][3][4][5] The larger surface areas and high electric conductivity render them as ideal supporting materials for metal nanoparticle catalysts such as Ag, Au, Pt, and Pd nanoparticles, which have shown great promise in catalysis, [6] surface-enhanced Raman scattering (SERS), [7] and electrochemical and fuel cells. [8][9][10][11][12] CNTs are also templates for attaching metal nanoparticles and nanoparticle-fused metal nanowires for hydrogen storage and for chemical and biological sensing applications; [13][14][15] Single walled carbon nanotubes (SWNTs) decorated with more than eighteen metals for the detection of several gases such as H 2 , CH 4 , CO, and H 2 S have been reported. [16] Several approaches have been attempted to prepare CNT-metal nanoparticle composites that include spontaneous reduction, [2,17] electrochemical reduction, [18,19] citrate reduction [20] galvanic displacement reaction, [21] nanoparticle decoration on chemically oxidized CNT side walls, [22,23] and MW-assisted functionalization.…”