Photoelectron spectroscopy (XPS) studies on some palladium catalysts

Mathew, Joice P.; Srinivasan, M.

doi:10.1016/0014-3057(95)00027-5

Cited by 59 publications

(45 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak corresponding to the Pd 3d 5/2 state resulting from the spin-orbital splitting is positioned at 335.7 eV, which indicates the presence of Pd 0 , [40] whereas the peak at approximately 337.75 eV can be assigned to the Pd 2 + state. [41] The experimentally obtained characteristic peaks corresponding to Pd 3d 5/2 and Pd 3d 3/2 states from the spin-orbital splitting are shown in Figure 5. Herein, we used only the binding energy value of the Pd 3d 5/2 line to determine the oxidation state of palladium.…”

mentioning

confidence: 97%

“…As mentioned earlier, the peak at 337.37 eV is due to the presence of unreacted Pd 2 + whereas the new peak that appeared at 336.47 eV is due to the presence of Pd + in the sample. [41,42] We found that not all Pd 2 + was converted to Pd + and unreacted Pd 2 + species could coordinate with chain 'N' of the polymer. [43] XPS analysis indicates that 1.64 wt % of palladium was present on the surface of the polymer matrix.…”

mentioning

confidence: 97%

See 1 more Smart Citation

Palladium–Poly(3‐aminoquinoline) Hollow‐Sphere Composite: Application in Sonogashira Coupling Reactions

et al. 2013

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 97%

mentioning

confidence: 97%

Palladium–Poly(3‐aminoquinoline) Hollow‐Sphere Composite: Application in Sonogashira Coupling Reactions

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Binding energy / eV peak at about 399 eV is assigned to the free nitrogen of the amino groups and of the imidazole group while that at about 401 eV is due to nitrogen involved in interaction with acid groups on the matrix surface (30,31).…”

Section: N1smentioning

confidence: 99%

Determination of the Constants of Affinity of FeCl3, CuCl2, and ZnCl2 for a Nitrogen-Containing Organosilane Bonded on Al2O3–Cellulose Acetate Hybrid Material Surface from Ethanol Solution

Lazarin¹,

Landers

Kholin

et al. 2002

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…The results indicate that the P4VP shells were successfully immobilized onto the PVBCS nanosphere surfaces. Poly(vinylpyridine) is the most used polymer for nanoparticle stabilization because it fulfils ligand requirements [41]. In this work, the PVBCS-1 nanospheres were activated in the PdCl 2 solution, and then hydrazine hydrate was used as the reducing agent for the PdCl 2 -activated nanospheres.…”

Section: Characterizationsmentioning

confidence: 99%

Synthesis and property of polymer nanospheres with Pd/P4VP shells via surface RAFT polymerization

Shi¹,

Zhang²,

Zhu³

et al. 2009

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract.A reversible addition-fragmentation chain transfer (RAFT) agent with carbazole as Z-group was immobilized on the surfaces of the cross-linked poly (4-vinylbenzyl chloride-co-styrene) (PVBCS) nanospheres with a diameter of about 70 nm by the reaction of benzyl chloride groups in the PVBCS between carbazole and carbon sulfide. Then surface RAFT polymerization of 4-vinylpyridine (4VP) was used to modify the nanospheres to produce a well-defined and covalently tethered P4VP shell. By surface activation in a PdCl2 solution and then reduction by hydrazine hydrate (N2H4·H2O), the P4VP composite shells were obtained containing densely palladium metal nanoparticles. The chemical composition of the nanosphere surfaces at various stages of the surface modification was characterized by X-ray photoelectron spectroscopy (XPS). Transmission electron microscopy (TEM) was used to characterize the morphology of the hybrid nanospheres. The Pd/P4VP shell nanospheres were also applied to the catalytic reaction and proved to be efficient and reusable for the Heck reaction.

show abstract

Photoelectron spectroscopy (XPS) studies on some palladium catalysts

Cited by 59 publications

References 10 publications

Palladium–Poly(3‐aminoquinoline) Hollow‐Sphere Composite: Application in Sonogashira Coupling Reactions

Palladium–Poly(3‐aminoquinoline) Hollow‐Sphere Composite: Application in Sonogashira Coupling Reactions

Determination of the Constants of Affinity of FeCl3, CuCl2, and ZnCl2 for a Nitrogen-Containing Organosilane Bonded on Al2O3–Cellulose Acetate Hybrid Material Surface from Ethanol Solution

Synthesis and property of polymer nanospheres with Pd/P4VP shells via surface RAFT polymerization

Contact Info

Product

Resources

About