Electrochemistry

The purpose of this project was to discover how the pH level affects corrosion rate. The hypothesis was if the pH level affects the corrosion rate, then the lower the pH level is quicker the corrosion rate would be. This will happen because liquids below the pH level of 7 possess stronger acidic attributes. The effect of pH level on corrosion rate was determined by depositing a copper penny in each of three plastic cups, and then three different liquids by their pH levels, were assigned to be displaced

TUltrahigh power lithium ion capacitor using lithiated silicon oxycarbide and snake fruit rinds activated carbon† *a,b In this study, we report reports an approach to form an exceptionally high-power lithium-ion capacitor (LIC) using environmentally friendly lithiated silicone oxycarbide (SiOC) material derived from phenyl-rich silicone oil as the anode and activated carbon via KOH activation of snake fruit rinds (SKOH) as the cathode. A battery-type SiOC anode exhibited an incredibly high rate capability

Due to the industrial restrictions in place across some the main areas of the world under health and safety regulations, finding an alternative plating process to the current hexavalent chromium process has become a real necessity. Trivalent chromium has proved to be a suitable replacement due to being less toxic, both health-wise and environmentally, whilst also demonstrating almost identical metal finishes to those of the hexavalent chromium deposits. However, the trivalent chromium chemical process

Chapter 1 Introduction 1.1 Background Nanotechnology is a field of applied science, focused on the design, synthesis, characterization and application of materials and devices at the nanoscale. This is an emerging field which plays a major role in the development of innovative methods to produce new products. Because of its greater role in enhancing the performance of several existing technologies, it is gaining high attention. Properties of materials often change dramatically when size reduces

Introduction: An electrical circuit is defined by the ability to allow the flow of electrons in a complete loop between two points of potential difference. This potential difference (that being two terminals of high and low electric potential) is provided by a battery. Metals of varying electrode potentials can be used in conjunction with an intermediary such as a potato to provide a circuit with an electrochemical cell. The difference in potentials between zinc and copper electrodes (for example)

http://www.brsquared.org/wine/Articles/SO2/SO2.htm research question What is the role of sulphur dioxide in white wine? background theory Wine has been a popular beverage for many years amongst different societies. The process of winemaking is one of the most complex and detailed processes, where every step is meticulous towards ensuring the best quality wine is produced. However, different phenomena are able to affect the wine even after it is bottled and stored. Oxidation is the chemical process

Group 14 of the periodic table contains a mixture of non-metals (carbon and silicon), a metalloid (germanium), and two metals ( tin and lead). Tin is able to form dihalides and tetrahalides such as SnI2 and SnI4. However, lead will not form tetrahalides as readily as tin3. The tetrahalides of lead will decompose into dihalides due to their instability 3. The stability of the compounds is based on their respective oxidation states. Periodic trends suggest that group 14 oxidation states are normally

In this section, a scale up study done by Fei Zhang et al in 2014 was reviewed. The system consists of microbial desalination cell system with post aerobic process as shown in figure 1. The volume of anolyte: sea water: catholyte is 60 L, 15 L and 30 L respectively (totaling up to 105 L). This is by far one of the biggest (if not the biggest) known scale up to date. Although it is still one order of magnitude away from typical pilot studies, it provides some insights in issues that cannot be seen

Study of the oxidation of 3,5-di-tert-butylcatechol with molecular oxygen catalyzed by of 5, 10, 15, 20-tetraphenylporphyrinatocobalt(II). M. Hassanein, S. El-Khalafy*, S. Shendy Tanta University, Faculty of Science, Department of Chemistry, Tanta 31527, Egypt. Abstract 5, 10, 15, 20-tetraphenylporphyrinatocobalt(II) showed good catalytic activity towards oxidation of 3,5-di-tert-butylcatechol to 3,5-di-tert-butyl-benzoquinone by dioxygen in dimethylformamide. The oxidation reaction was followed

From the surface morphology, it was estimated that the unique hierarchical ZnSnO2@G nanocomposite offers a high surface area which makes it a potential candidate for the SC’s application. The N2 adsorption–desorption curves of the composites are presented in Figure 5(a). Clearly, the presence of a hysteresis loop within relative pressure (P/P0 =1) confirms the capillary condensation of N2 gas within the as-prepared nanocomposite, thus demonstrating the porous characteristic of the electrode material