Zinc

Abstract: We describe the successful synthesis of Polypyrrole-Gold nanocomposites (PPy-Au NCs) by the chemical oxidative polymerization of pyrrole with ferric chloride as an oxidizing agent, in the presence of a colloidal suspension of gold nanoparticles. Gold nanoparticles (Au NPs) were synthesized by standard citrate reduction method. Au NPs and PPy-Au NCs were characterized by Transmission Electron Microscopy (TEM), Atomic Forced Microscopy (AFM), Scanning Electron Microscopy (SEM), Fourier…

Copper is one of the oldest metals known to man. Copper dating back to ancient time was discovered in Iraq. According to webelements.com, origin of name is from the Latin word "Cuprum" meaning the island of "Cyprus". Copper symbol is Cu. Copper atomic number is 29 and atomic mass of 63.546 amu. Copper is located in the 11th group on the periodic table. Copper is a transition metal, meaning metals that can be stretched into thin forms, such as wire (this characteristic is called "ductility"), and…

Locate your Jumper Cables. Locate your battery under the hood and find the battery’s positive and negative terminals. The positive terminal should have a red cover or can be signified by a + sign. Making sure none of the clamps touch one another, attach the red clamp to the dead battery’s positive terminal. Do not attach the black clamp to the battery’s negative terminal as it could cause hazardous sparks. Attach the other red clamp to the charged battery’s positive terminal, and then attach…

One of the earliest metals to be discovered, lead has a long history with mankind. It was first discovered around 7000 BC as a byproduct of silver smelting. Lead is metal known for its resistance against corrosion, malleability, and low melting point. Mined all across the world, lead was one of the most important metals in ancient times. Although lead was toxic, it was used widely, particularly in the Roman Empire. Through its uses and toxicity, lead affected the classical era in a drastic way.…

Oxidation is a very interesting topic in today 's society. Infact it is a hot topic in many debates about budgets and even safety. This is because of oxidations most common form, rust. Most people are very familiar with rust as it affect our infrastructures, such as bridges, beams, ladders, pipes, and railings. Another big big effect that rust creates is in vehicles as almost everybody uses them in their day to day life. For some the rusting these objects can be dangerous if the right…

naturalist and naturalist philosopher. During this period there were 86 known metals.The first discovery of metals were Gold (Au) and Copper (Cu). Then four other metals were discovered. They were called Arsenic (As), Antimony( Sb),Bismuth (Bi) and Zinc (Zn).While the metals where discovered naturalists…

You think summer is hot, think again. Although copper is a common metal known to man, there may be a few interesting details that you did not know about the element. Such as how hot you must heat copper before it melts into liquid form, or how the smallest dose of copper could make a major impact on your health. The uses of this metal could open up new opportunities and inspire new innovations that may have not been thought of before. Copper dates back almost ten thousand years and has been a…

Nanosilver Impregnation A 400 ppm aqueous dispersion of silver nanoparticles was produced and applied to the specimens using electrochemical technique. The size range of silver nanoparticles was 30-80 nm. The pH of the suspension was 6-7; two kinds of surfactants (anionic and cationic) were used in the suspension as stabilizer; the concentration of the surfactants was three times the nano-silver particles. Empty-cell impregnation process (Rueping method) was carried out in pressure vessel under…

A. Significance Copper is one of the most abundant transition metals in the human body and its redox characteristics make copper an important cofactor in many enzymes. Copper containing enzymes are important for tissue generation, synthesis of neurotransmitters, and catalysis of the electron transfer reactions.1 Because of its diverse functions, copper homeostasis deficiency is linked to many diseases. A prominent example is Wilson’s disease with a prevalence of approximately 1 case in 30,000…

Background: Lead is a neurotoxin that is exceedingly harmful to human health. The government attempted to ban lead in products such as paint and gasoline. However, lead can still found in soil. Most recreational parks where children play have soil that contain lead. Exposure to lead may cause similar health conditions to anemia. Uncontaminated soil contains lead concentrations less than 50 parts per million (ppm). Yet soil lead levels in many areas exceed 200 ppm. The research will highlight…