Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/2528
Title: Room temperature conversion of metal oxides (MO, M = Zn, Cd and Mg) to peroxides: insight into a novel, scalable and recyclable synthesis leading to their lowest decomposition temperatures
Authors: Lingampalli, S. R.
Gautam, Ujjal K.
Keywords: Chemistry
Crystallography
Carboxylated Nitrile Rubber
Thermal-Decomposition
Zinc Peroxide
Hydrogen-Peroxide
Hydrothermal Synthesis
Calcium Peroxide
Singlet Oxygen
Thin-Films
Nanoparticles
Stability
Issue Date: 2014
Publisher: Royal Society of Chemistry
Citation: Lingampalli, SR; Gautam, UK, Room temperature conversion of metal oxides (MO, M = Zn, Cd and Mg) to peroxides: insight into a novel, scalable and recyclable synthesis leading to their lowest decomposition temperatures. Crystengcomm 2014, 16 (6) 1050-1055, http://dx.doi.org/10.1039/c3ce42276c
Crystengcomm
16
6
Abstract: Metal peroxides (MO2) have long been used as preferred reagents in organic and inorganic reactions as well as in plastic processing and concrete industries due to the characteristic O-O peroxo linkage that is easily cleaved at moderate temperatures to produce activated oxygen and metal oxide. While these compounds are usually obtained by reacting metal ions with H2O2 under basic conditions at elevated temperatures, we demonstrate that the nanoparticles of MgO2, ZnO2 and CdO2 can be accomplished by reacting the corresponding metal oxides with H2O2 under ambient conditions. These peroxide nanocrystals exhibit the lowest decomposition temperatures (T-d), 25-80 degrees C lower than the reported values, making them suitable for solution based reactions. It is found that the lowering of T-d can be controlled by tailoring the metal-oxide defects induced by the synthesis procedure. Based on a similar reaction mechanism, we now demonstrate that ZnS as well as Zn can also be converted to ZnO2 nanocrystals under ambient conditions. The possibility of converting metal oxides to metal peroxides and vice versa makes it a recyclable process and the lower T-d is expected to expand their usage in solution processes.
Description: Restricted Access
URI: http://hdl.handle.net/10572/2528
ISSN: 1466-8033
Appears in Collections:Research Papers (Ujjal K. Gautam)

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