138
Au octahedra nanocrystals (NCs) were synthesized by a seeded approach (15) by
injecting 0.60 mL of ice-cold, freshly prepared NaBH 4 (10 mM) into a rapidly
stirred mixture of HAuCl 4 (0.01 M, 0.25 mL) and CTAB (0.1 M, 9.75 mL). A
growth solution was prepared by consecutively adding 0.5 mL of 10 mM HAuCl 4
and 0.07 mL of 100 mM AA to a 10 mL aqueous solution of 0.1 M CPC. The seed
solution was added to the growth solution under stirring and then left undisturbed at
room temperature until the reaction completed.
Carbon-supported Au nanoparticles (Au/C) were synthesized by wet impregnation of XC-72 carbon by HAuCl 4 , which was dried, and the mixture reduced using
NaBH 4 solution. Core-shell- structured PdAuM (M = Co, Fe, Ni) nanoparticles with
PdAu atoms on the shell and M atoms in the core were synthesized by a step-by-step
approach. The molar ratio of Pd:Au:M is 50:10:40, and more details in their synthesis and characterization can be found in our earlier work [16, 17]. Commercial Pt/C
and PtRu/C (with molar ratio Pt:Ru of 1:1) catalysts were obtained from ETEK.
Pt monolayer (ML) was deposited on the Au single-crystal and nanoparticle surfaces by galvanic displacement of a predeposited Cu underpotential deposition
(UPD) monolayer. To synthesize the Ru-modified Pt ML /Au/C catalyst, Ru nanocluFig. 8.26 In situ IRRAS spectra recorded during MOR on the Pt ML /Au(111) electrode in 0.1 M
HClO 4 + 0.5 M methanol. One hundred twenty-eight interferograms with a resolution of 8 cm
−1
were co-added to each spectrum [43]. Reproduced with permission of the American Chemical
Society
8 Catalytic Properties of Pt Monolayer Electrocatalysts
Au octahedra nanocrystals (NCs) were synthesized by a seeded approach (15) by
injecting 0.60 mL of ice-cold, freshly prepared NaBH 4 (10 mM) into a rapidly
stirred mixture of HAuCl 4 (0.01 M, 0.25 mL) and CTAB (0.1 M, 9.75 mL). A
growth solution was prepared by consecutively adding 0.5 mL of 10 mM HAuCl 4
and 0.07 mL of 100 mM AA to a 10 mL aqueous solution of 0.1 M CPC. The seed
solution was added to the growth solution under stirring and then left undisturbed at
room temperature until the reaction completed.
Carbon-supported Au nanoparticles (Au/C) were synthesized by wet impregnation of XC-72 carbon by HAuCl 4 , which was dried, and the mixture reduced using
NaBH 4 solution. Core-shell- structured PdAuM (M = Co, Fe, Ni) nanoparticles with
PdAu atoms on the shell and M atoms in the core were synthesized by a step-by-step
approach. The molar ratio of Pd:Au:M is 50:10:40, and more details in their synthesis and characterization can be found in our earlier work [16, 17]. Commercial Pt/C
and PtRu/C (with molar ratio Pt:Ru of 1:1) catalysts were obtained from ETEK.
Pt monolayer (ML) was deposited on the Au single-crystal and nanoparticle surfaces by galvanic displacement of a predeposited Cu underpotential deposition
(UPD) monolayer. To synthesize the Ru-modified Pt ML /Au/C catalyst, Ru nanocluFig. 8.26 In situ IRRAS spectra recorded during MOR on the Pt ML /Au(111) electrode in 0.1 M
HClO 4 + 0.5 M methanol. One hundred twenty-eight interferograms with a resolution of 8 cm
−1
were co-added to each spectrum [43]. Reproduced with permission of the American Chemical
Society
8 Catalytic Properties of Pt Monolayer Electrocatalysts