Initial Stages of Pd Deposition onto Au(111) Electrodes from PdSO_4 Solution

Authors

Jing TANG, 1.Department of chemistry, Xiamen 361005,China,2.Department of Electrochemistry, University of Ulm, 89069 Ulm, Germany);
Petri M., 1.Department of chemistry, Xiamen 361005,China,2.Department of Electrochemistry, University of Ulm, 89069 Ulm, Germany);
Kibler L.A., 1.Department of chemistry, Xiamen 361005,China,2.Department of Electrochemistry, University of Ulm, 89069 Ulm, Germany);
Kolb D.M., 1.Department of chemistry, Xiamen 361005,China,2.Department of Electrochemistry, University of Ulm, 89069 Ulm, Germany);

Corresponding Author

Jing TANG(jingtang@fzu.edu.cn);
Kolb D.M.

Abstract

Metal thin films have attracted considerable interest in relation to catalysis, energy, material, corrosion and environmental protection. Pd thin film is capable of proton reduction and strong hydrogen absorption, which has shown electrocatalytic activity to the oxidation of small organic molecules. In this paper, in_situ STM measurements are performed to study the deposition process and the influence of the surface structure and anion adsorption. When Pd is deposited from PdSO4 solution on Au(111) in the UPD range, a monolayer of Pd with pseudomorphic (1×1) structure was formed on the substrate with induced (3×7) R19° SO2-4 adsorption. With decreasing potential the OPD range, the second pseudomorphic monolayer is formed with induced SO2-4 adsorption similar to that on the first monolayer. When the Pd reaches more than two monolayers, the deposition process changes to follow three_dimensional growth model with increased defects. Pd deposition from PdSO4 on Au (111) (1×1) follows the epitaxial way to form two complete monolayers of Pd film, in which induced anion adsorption on Pd film could play an important role.

DOI Link

https://doi.org/10.61558/2993-074X.1495

Publication Date

2003-05-28

Online Available Date

2003-05-28

Revised Date

2003-05-28

Received Date

2003-05-28

Recommended Citation

Jing TANG, Petri M., Kibler L.A., Kolb D.M.. Initial Stages of Pd Deposition onto Au(111) Electrodes from PdSO_4 Solution[J]. Journal of Electrochemistry, 2003 , 9(2): 126-132.
DOI: 10.61558/2993-074X.1495
Available at: https://jelectrochem.xmu.edu.cn/journal/vol9/iss2/2

References

[1]　BaldaufM,KolbDM.FormicacidoxidationandultrathinPdfilmsonAu(hkl)andPt(hkl)electrodes[J].J.Phys.Chem.,1996,100:11375～11381.

[2]　KiblerLA,KleinertM,RandlerR,etal.InitialstagesofPddepositiononAu(hkl)PartI:PdonAu(111)[J].Surf.Sci.1999,443:19～30.

[3]　NaoharaH,YeS,UosakiK.ElectrochemicallayerbylayergrowthofpalladiumonanAu(111)electrodesurfaceevidenceforimportantroleofadsorbedPdcomplex[J].J.Phys.Chem.B1998,102:4366～4373.

[4]　EdensGJ,GaoX,WeaverMJ.TheadsorptionofsulfateonAu(111)inacidaqueousmedia:adlayerstructuralinferencesfrominfraredspectroscopyandSTM[J].Electroanal.Chem.,1994,375:357～366.