Study of adsorption of citrate on Pt by CV and EQCM

Peña, Omar Israel González; Chapman, Thomas W.; Vong, Yunny Meas; Antaño-López, R.

doi:10.1016/j.electacta.2008.02.104

Cited by 28 publications

(25 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Moreover, the adsorption of citrate on specific facets of Rh crystals, such as (111), could possibly (fully or partially) block the access of Rh(III) adions to these facets. Such a blocking effect has been previously observed in noble metal nanoparticles synthesized by using an additive agent in the solution [31,32]. As a result, coarse and attenuated Rh nanowires were formed (Figure 1B).…”

Section: Resultssupporting

confidence: 77%

Electrodeposition of Rhodium Nanowires Arrays and Their Morphology-Dependent Hydrogen Evolution Activity

et al. 2017

View full text Add to dashboard Cite

This work reports on the electrodeposition of rhodium (Rh) nanowires with a controlled surface morphology synthesized using an anodic aluminum oxide (AAO) template. Vertically aligned Rh nanowires with a smooth and coarse morphology were successfully deposited by adjusting the electrode potential and the concentration of precursor ions and by involving a complexing reagent in the electrolyte solution. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses were used to follow the morphological evolution of Rh nanowires. As a heterogeneous electrocatalyst for hydrogen evolution reactions (HER), the coarse Rh nanowire array exhibited an enhanced catalytic performance respect to smooth ones due to the larger surface area to mass ratio and the higher density of catalytically active defects, as evidenced by voltammetric measurements and TEM. Results suggest that the morphology of metallic nanomaterials could be readily engineered by electrodeposition. The controlled electrodeposition offers great potential for the development of an effective synthesis tool for heterogeneous catalysts with a superior performance for wide applications.

show abstract

Section: Resultssupporting

confidence: 77%

Electrodeposition of Rhodium Nanowires Arrays and Their Morphology-Dependent Hydrogen Evolution Activity

et al. 2017

View full text Add to dashboard Cite

show abstract

“…These desorptions were more easily detected when CV was combined with CM (negative M values in region I; see Table 2). In a previous study [12] we combined CV and CM measurements to estimate the amounts of compounds specifically adsorbed onto the Pt surface, as suggested by González-Peña et al [19]. We took into account the mass changes at the end of region I (near 0.35 V), along with the variety of situations depicted in Figs.…”

Section: Cyclic Massogram Study Of Hm and As Specifically Adsorbed On Ptmentioning

confidence: 99%

Specific adsorption of arsenic and humic acid on Pt and PtO films

Menezes¹

2010

Electrochimica Acta

View full text Add to dashboard Cite

“…1 and S2 were calculated as described in [11]. These charge densities were used to calculate the densities of active sites blocked by spontaneously adsorbed compounds in regions I and III, and at two point potentials (0.25 and 1.15 V), N AS,I bloc and N AS,III bloc , respectively, using the equations [22]:…”

Section: Eis Study Of Hm and Map Specifically Adsorbed Onto Ptmentioning

confidence: 99%

Use of electrochemical techniques to characterize methamidophos and humic acid specifically adsorbed onto Pt and PtO films

Silva

Carvalho

2011

Journal of Hazardous Materials

View full text Add to dashboard Cite

Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were employed to study methamidophos (MAP) and humic acid (HM) specifically adsorbed onto Pt and PtO films in pH-7.0 universal buffer. The approach was found to be sufficiently selective for use in studies involving adsorption of species in environmental systems (e.g., soil minerals), typically evaluated by batch experiments and high performance liquid chromatography (HPLC) or gas chromatography (GC). The proposed method allowed quantification of active hydrogen adsorption sites blocked by HM, both when this compound is adsorbed alone or co-adsorbed with MAP. At higher amounts of MAP in the adsorption solution, the compound was co-adsorbed more effectively than HM (kept at constant concentration). In the case of sequential specific adsorption, the first compound adsorbed typically predominates over the second. EIS was more effective for determining the number of blocked active sites on Pt than CV, which was superior for PtO films.

show abstract

Study of adsorption of citrate on Pt by CV and EQCM

Cited by 28 publications

References 22 publications

Electrodeposition of Rhodium Nanowires Arrays and Their Morphology-Dependent Hydrogen Evolution Activity

Electrodeposition of Rhodium Nanowires Arrays and Their Morphology-Dependent Hydrogen Evolution Activity

Specific adsorption of arsenic and humic acid on Pt and PtO films

Use of electrochemical techniques to characterize methamidophos and humic acid specifically adsorbed onto Pt and PtO films

Contact Info

Product

Resources

About