Studies of Double-Layer Effects at Single Crystal Gold Electrodes II. The Reduction Kinetics of Hexaaquairon(III) Ion in Aqueous Solutions

2001 ◽  
Vol 105 (1) ◽  
pp. 104-111 ◽  
Author(s):  
Magdalena Hromadová ◽  
W. Ronald Fawcett
Keyword(s):  
Aqueous Solutions ◽  
Single Crystal ◽  
Double Layer ◽  
Gold Electrodes ◽  
Reduction Kinetics ◽  
Kinetics Of

Study of potential oscillations during reaction of an aluminium single crystal with an aqueous KOH solution

1990 ◽  
Vol 55 (2) ◽  
pp. 345-353 ◽  
Author(s):  
Ivan Halaša ◽  
Milica Miadoková
Keyword(s):  
Aqueous Solutions ◽  
Single Crystal ◽  
Single Crystals ◽  
Periodic Potential ◽  
Optimum Conditions ◽  
Potential Oscillations ◽  
Dilute Aqueous Solutions ◽  
Experimental Findings ◽  
Kinetics Of

The authors investigated periodic potential changes measured on oriented sections of Al single crystals during spontaneous dissolution in dilute aqueous solutions of KOH, with the aim to find optimum conditions for the formation of potential oscillations. It was found that this phenomenon is related with the kinetics of the reaction investigated, whose rate also changed periodically. The mechanism of the oscillations is discussed in view of the experimental findings.

Reduction Kinetics of Thermally Reduced Graphene Oxide Thin Films

2015 ◽  
Vol 827 ◽  
pp. 317-320 ◽  
Author(s):  
Fitrilawati ◽  
Norman Syakir ◽  
Annisa Aprilia ◽  
Zhou Yang Liu ◽  
Xin Liang Feng ◽  
...  
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Reduced Graphene Oxide ◽  
Absorption Spectra ◽  
Thermal Reduction ◽  
Reduction Kinetics ◽  
Glass Substrates ◽  
Reduced Graphene ◽  
Kinetics Of

We report an experimentalstudy of thermal reduction of graphene oxide (GO) under nitrogen flow.Ultrathin films of GO were prepared on quartz glass substrates by spin-coatingfrom 3 mg/ml aqueous solutions of GO. These films were annealed at 50 °C under vacuum overnight before thermal reduction.The films were exposed to temperatures of 100 °C, 150 °C, 200 °C, 300 °C, 400 °C, 500 °C and 800 °C under nitrogen flowing. We used UV-Vis absorption spectroscopy tomonitor the change of absorption spectra caused by thermal reduction. We observed a significant change ofabsorption spectra due to formation of reduced graphene oxide (RGO). We found that thermal reduction startedalready at 100 °C, but proceeded significantly faster at heating temperatures higherthan 200 °C.

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