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Borate Phosphor for Phototherapy Application
Published in S. K. Omanwar, R. P. Sonekar, N. S. Bajaj, Borate Phosphors, 2022
Lead compound is a relatively un-reactive post-transition metal. Its weak, metallic character is illustrated by its amphoteric nature. Compounds of lead are usually found in the 2+ oxidation state rather than the 4+ state common with lighter members of the carbon group.
Thin Films for Surface Protection
Published in Fredrick Madaraka Mwema, Tien-Chien Jen, Lin Zhu, Thin Film Coatings, 2022
Fredrick Madaraka Mwema, Tien-Chien Jen, Lin Zhu
Thin film coatings for wear protection can be classified into various groups, namely, transition metal group, post-transition metal group, reactive non-metal group, lanthanides group, and hybrid group [37].
Macrocyclic Receptors for Precious Metal Ions
Published in Satish Kumar, Priya Ranjan Sahoo, Violet Rajeshwari Macwan, Jaspreet Kaur, Mukesh, Rachana Sahney, Macrocyclic Receptors for Environmental and Biosensing Applications, 2022
Satish Kumar, Priya Ranjan Sahoo, Violet Rajeshwari Macwan, Jaspreet Kaur, Mukesh, Rachana Sahney
Vasilescu et al. designed and synthesized dibenzyl-N-substituted, 17-membered macrocyclic ring 12, which contained an S3N2-donor set with the desired N–S–N donor atom sequence. Bulk membrane transport studies (water/chloroform/water) in the presence of six transition and post-transition metal ions were performed. The ligand was found to be highly selective towards Ag+ ions over other metal ions. The stability constant for silver complex (1 : 1) was at least 105 times more stable than any other metal complexes examined. Thus, the ligand exhibited considerable discrimination for silver ovre the other six metal ions (Vasilescu et al. 2006).
Future of photovoltaic materials with emphasis on resource availability, economic geology, criticality, and market size/growth
Published in CIM Journal, 2023
G. J. Simandl, S. Paradis, L. Simandl
Indium is a soft, post-transition metal with atomic number 49 and atomic weight of 114.8; it is a member of group 13 on the periodic table (Figure 4c). Its properties are similar to those of its vertical neighbors, Ga and thallium. Indium tin oxide (ITO) accounts for most (probably 70% or more) global In consumption. ITO thin-film coatings are primarily used in flat panel displays (touch screens and flatscreen televisions). Solar panels containing CIGS, alloys, solders, compounds, electrical components, and semiconductors account for the rest of the In market (Schuyler Anderson, 2022a). This element has been reported in ocean seawater, air, soils near smelters, and rainwater (Fowler & Maples-Reynolds, 2015); however, more research is needed on its environmental behavior and increasing concentrations in natural environments (White & Shine, 2016). The potential impacts of In on the environment are considered by Jabłońska-Czapla and Grygoyć (2021), Nguyen et al. (2020), and Nkuissi, Konan, Hartiti, and Ndjaka (2020). Although In is generally considered relatively nontoxic, acute exposure through inhalation and the carcinogenic potential of In compounds are of concern (White & Shine, 2016).
Inverse coordination complexes. Carbon monoxide, carbon dioxide, carbonate, acyclic polyolato anions, neutral polyols and polyethers as centroligands. Topologies and systematization
Published in Journal of Coordination Chemistry, 2023
The tris(monodentate) coordination pattern mode is the most common triconnective topology. Simple triconnective [(μ3-CO3)M3] tris(moodentate) building units are present in a large number of transition and post transition metal complexes. A first series comprises rhenium inverse coordination complexes [(µ3-CO3){Re(CO)5}3]4+(134) [138], [(µ3-CO3){Re(CO)3(Me2bipy)}3]4+(135) [139], a ruthenium compound [(µ3-CO3){Ru(C6H6)L)3}] (136) [140], the nickel complex [(μ3-CO3){Ni(tren)}3] (137) [141] and the palladium compound [(µ3-CO3){Pd(C6H3)(C6H4CH2NM2)2}]3}]3+ (138) [142] (Scheme 43).
Adsorption of cadmium by a high-capacity adsorbent composed of silicate-titanate nanotubes embedded in hydrogel chitosan beads
Published in Environmental Technology, 2020
Roxana Quiroga-Flores, Asma Noshad, Reine Wallenberg, Linda Önnby
Figure 5(a)–(c) shows the fractions (1 − (C·Co−1)) of removed metals from the real leachate as a function of bed volumes. We divided the column run in phase I and II, based on the observations done for Cd2+ adsorption in Figure S5. Figure 5(a,b) shows metals that were removed during phase I. Figure 5(a) shows that alkali and alkali-earth metals such as Mg2+, Ca2+and K+ are removed up to 1 − (C·Co−1) < 0.5. Figure 5(b) shows that transition metal ions such as Zn2+, Co2+, Ni2+ and Cu2+ are removed up to 1 − (C·Co−1) > 0.5. During phase II, Figure 5(c) shows the removal of Cd2+ (transition metal) and Pb2+ (post-transition metal) and their respective removed fractions that were found in the range of 1 − (C·Co−1) > 0.5.