Lanthanum

You might ask yourself, “How does lanthanum play a role within my everyday life”? Rare-earth elements like lanthanum play an abundant part in our daily lives. In particular, lanthanum is used in many ways such as improving our water supply, technology and health. This paper will define these uses and also elaborate on its history and properties. To begin, the discovery of ceria was made in 1803 by Jons J. Berzelius in 1803 from the mineral cerite. His apprentice, Carl G. Mosander, took this

ABSTRACT: Rare earth elements or rare earth metals are a group of seventeen elements in the Periodic Table including Scandium, Yttrium and 15 Lanthanides with Z ranging continuously from 57 to 71. These elements encompass nearly all electronic, clean energy, and military technologies due to their unique physical and chemical properties. Despite world-wide usage of these elements, presently China bears a monopoly in rare earth market owing to its huge rare earth deposits. The ever increasing demand

way for increasing photocatalytic activity. Zinc oxide and Lanthanum doped Zinc oxide nanoparticles were synthesized by modifying the gel-combustion method. It was found that La can greatly enhance the cytotoxicity and photocatalytic activity of ZnO nanoparticles towards various cell lines and paracetamol drug. These nanoparticles were characterized by various spectroscopic and other techniques which clearly revealed the presence of lanthanum ions. The absorption edge shifts towards the visible region

fact, many people have never even heard of them. Lanthanum is one of these unsung elements. Although, quite often, one may live his entire life without ever hearing of this element, lanthanum is practically everywhere. Far from being a “rare earth” metal, as its name implies, it can be found in many places, from the bones that make up the human form, to the vegetables that make their meals. (1)(4) This poster will tell the fascinating history of lanthanum, some of the physical properties that

Addition of rare earth metals, especially Lanthanum (La), to ceria supports has been widely investigated. Rare earth metals are well known for their catalytic effects, and when added to ceria catalyst, provide improved thermal stability and increased activity [Wang et al., 2010]. Wang et al. (2011) studied a ceria/zirconium catalyst doped with rare earth metals La, Nd, Pr, Sm, and Y and reported that all of the metals exhibited increased activity and selectivity with La, Nd, and Pr performing the

Photocatalytic degradation of the Paracetamol drug using Lanthanum doped ZnO nanoparticles and their in-vitro Cytotoxicity assay. M.Shakira*, M.Faraza, Asif Sherwanib and Saud I. Al-Resayesc a. Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India. b. Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India c. Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia. *To whom correspondence should be addressed

(Co, Fe) doped (La, Ca) based chromites - (La0.8Ca0.2)(Cr0.9-xCo0.1Fex)O3 The transition metal doped perovskite compound, (La0.8Ca0.2) (Cr0.9-xCo0.1Fex) O3 (x=0.03, 0.06, 0.09, 0.12) was synthesized by mixing the powders of lanthanum oxide (La2O3, 99.99%), chromium oxide (Cr2O3, 99.99%), cobalt oxide (Co3O4, 99.99%), ferric oxide (Fe2O3, 99.99%) and calcium carbonate (CaCO¬3, 99.99%) in stoichiometric ratio according to the following equation. 0.4La2O3 + 0.2CaCO3 + ((0.9-x))/2Cr2O3 + 0.1/3Co3O4 +

which a large trivalent ion is needed, they may be the best. Rare earth (RE) ions play a vital role in modern industries and optical technologies as the essential constituents in preparing many essential novel materials. The lanthanides include Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb) and Lutetium (Lu). All the lanthanides show

Lanthanides and Actinides The lanthanides and the actinides make up the f block of the periodic table. The lanthanides are the elements produced as the 4f sub level is filled with electrons and the actinides are formed while filling the 5f sub level Some significant similarities and differences between lanthanides and actinides are observed. The two rows that are generally placed underneath the main periodic table are called the lanthanides series and the actinides series. These two rows are produced

corrosion in dry air, but not in moist air. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. Lutetium is sometimes considered the first element of the 6th-period transition metals, although lanthanum is more often considered as such. Lutetium was independently discovered in 1907 by French scientist Georges Urbain, Austrian mineralogist Baron Carl Auer von Welsbach, and American chemist Charles James. All of these researchers found lutetium as