Iron(III) ion-supported electrosynthesis of urchin-like gold arrays

Zhou, Di; Wang, Ruizhi; Zhang, Ming; Weng, Xuexiang; Chen, Jianrong; Wang, Ai‐Jun; Feng, Jiu‐Ju

doi:10.1016/j.electacta.2013.06.129

Cited by 19 publications

(6 citation statements)

References 52 publications

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“…The Au(111), Au(100) and Au(110) surfaces are all reportedly GEOR‐active, [95,96] among which Au(111) has the lowest surface energy and highest catalytic activity [97,98] . However, a study comparing the onset potential of OH(ads) formation on (111), (100) and (110) facets of Au showed that Au(110) is the most active one for OH(ads) formation as it has the lowest onset potential of GEOR, followed by (100) and lastly (111) [99]…”

Section: Summary Of Observed Glycerol Oxidation Results and Reported mentioning

confidence: 99%

An Overview of Glycerol Electrooxidation Mechanisms on Pt, Pd and Au

2021

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lower pH reduces the amount of carboxylates and favors the CÀ C bond scission. A reaction mechanism is proposed in this review, in which the generation of side products are directly from glycerol ("competition" between each side product) rather than from the further oxidation of C2/C3 products. Additionally, GEOR results and associated interpretations for Ni electrodes are presented, as well as a brief review on the performances of multi-metallic electrocatalysts (most of which are nanocatalysts) as an introduction to these future research hotpots.

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Section: Summary Of Observed Glycerol Oxidation Results and Reported mentioning

confidence: 99%

An Overview of Glycerol Electrooxidation Mechanisms on Pt, Pd and Au

2021

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“…S4). In the presence of Fe(III), the reduction of HAuCl 4 at the carbon electrode is an overpotential process and overlaps the reduction current of Fe(III) [26]. Beginning with the second scan, Au(III) and Fe(III) reduced on the gold surface generated during the first scan and exhibited two reduction peaks during the CV measurement.…”

Section: Resultsmentioning

confidence: 99%

Selective detection and recovery of gold at tannin-immobilized non-conducting electrode

Banu

Shimura

Sadeghi

2015

Analytica Chimica Acta

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A tannin-immobilized glassy carbon electrode (TIGC) was prepared via electrochemical oxidation of the naturally occurring polyphenolic mimosa tannin, which generated a non-conducting polymeric film (NCPF) on the electrode surface. The fouling of the electrode surface by the electropolymerized film was evaluated by monitoring the electrode response of ferricyanide ions as a redox marker. The NCPF was permselective to HAuCl4, and the electrochemical reduction of HAuCl4 to metallic gold at the TIGC electrode was evaluated by recording the reduction current during cyclic voltammetry measurement. In the mixed electrolyte containing HAuCl4 along with FeCl3 and/or CuCl2, the NCPF remained selective toward the electrochemical reduction of HAuCl4 into the metallic state. The chemical reduction of HAuCl4 into metallic gold was also observed when the NCPF was inserted into an acidic gold solution overnight. The adsorption capacity of Au(III) on tannin-immobilized carbon fiber was 29 ± 1.45 mg g−1 at 60 °C. In the presence of excess Cu(II) and Fe(III), tannin-immobilized NCPF proved to be an excellent candidate for the selective detection and recovery of gold through both electrochemical and chemical processes.

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“…However, direct electrodeposition method is convenient one, since shape tailoring of Au nanostructure and integration on the solid supports can be achieved simultaneously in a single step without using any sophisticated equipment, noxious reducing, stabilizing and immobilizing agents. As for example, a wide variety of Au nanostructures such as flower [23,24], nanocube [25], nanorod [26], branched [27], nanothorns [28], pinecones [29], porous sheets [30], quasi rods [31], urchins [32] etc. have been synthesized on different conducting supports.…”

Section: Introductionmentioning

confidence: 99%