Calorimetric measurement of interface enthalpy of nanocrystalline silver (I) oxide (Ag2O)

Khansaa Al-Essa; A V Radha; Alex; ra Navrotsky

doi:10.21767/2471-9838-C6-025

Calorimetric measurement of interface enthalpy of nanocrystalline silver (I) oxide (Ag2O)

EuroSciCon Conference on Nanotechnology & Smart Materials
October 04 -06 ,2018 Amsterdam , Netherlands

Khansaa Al-Essa, A V Radha and Alexandra Navrotsky

Peter A Rock Thermochemistry Laboratory and NEAT ORU (Nanomaterials in the Environment, Agriculture, and Technology Organized Research Unit), University of California at Davis, USA Jerash University, Jordan

Posters & Accepted Abstracts: Nano Res Appl

DOI: 10.21767/2471-9838-C6-025

Abstract

The interface enthalpy of nanocrystalline silver (I) oxide (Ag2O.nH2O) was measured. Ag2O.nH2O nanocrystalline samples of varying surface areas and degrees of agglomeration were synthesized by wet chemical technique. Interface areas were estimated by comparing the surface areas measured by N2 adsorption to the crystallite sizes refined from X-ray diffraction data. The interface enthalpy was verified by utilizing thermodynamic cycle, using enthalpy of solution measurements in 25% HNO3 at room temperature solution calorimetry. The interface enthalpy of the nanocrystalline Ag2O.nH2O is (0.842±0.508 J/m2). This work provides the first calorimetric measurement of the interface enthalpy of nanocrystalline silver (I) oxide (Ag2O.nH2O).