Tag: platinum

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    Synthesis and Characteristics of Platinum Black

    platinum black is an electrochemically synthesized form of platinum metal. It has many unique properties which make it a useful material for applications in catalysis and microelectronic fabrication.

    In contrast to bright platinum, the specific surface area of black platinum is much higher. This high surface area could be valuable for applications in catalysis such as the HER.

    Moreover, platinum black is able to adsorb gas and can be used in catalysis. It also possesses excellent chemical stability and a low oxidation potential.

    Synthesis of platinum black Using Aqueous Media

    To synthesize platinum black in aqueous media, we adapted a method of Kohlrausch, who pioneered the electrochemical preparation of platinum black on platinum electrodes in 1897. In this method, a mixture of 0.1 g PtCl4 and 0.002 g Pb(CH3COO)2 in 10 mL water was used as an electrolytic bath.

    Redox Stability of Black Platinum Threads

    To study the electrochemical stability of the platinum-black coated threads, a K3[Fe(CN)6] redox probe was used at different scan rates. Typical cyclic voltammograms are shown in Fig. 3. In the range of 0.02-0.1 V/s, the current peak (Ip) and square root of the scan rate (CV) were found to be a good predictor of the stability of the threads.

    The optimum loadings of ionomers for carbon-supported platinum catalyst and platinum black catalyst were 30 and 11 wt.%, respectively. The lower optimum binder loading for the platinum black catalyst was probably due to its higher density, compared to carbon-supported platinum catalyst.

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    How to Get Your Hands on a Platinum Ingot in World of Warcraft

    A platinum ingot is a refined material that can be made by processing platinum ore and other relevant materials. They are one of the higher-tier crafting ingredients in the game and can be a boon to players looking to craft the latest and greatest weapons and armor.

    platinum ingots aren't as easy to come by during the early game phases of the game as they are in later stages. Thankfully, there are a few spots that produce high quality platinum ingots in volume and it is relatively easy to get your hands on the stuff if you know where to look.

    Getting the right amount of platinum ingots isn't always a simple task but it's doable with the right combination of resources and a little hard work. The most obvious way to obtain this material is to go out and mine a few troves of platinum veins. This is the only way to guarantee a substantial yield and is often the best method of all.

    A platinum coin is another way to acquire this precious metal without breaking the bank. These are produced by recognized mints and refiners, but they're smaller in size than an actual platinum bar.

    It's a safe bet that many financial advisors will recommend that 5% to 9.5% of your investment portfolio be dedicated to "hard assets" such as gold, silver and platinum. These types of investments can be a valuable component of your total asset portfolio and help to mitigate risk.

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