in this work, we report synthesis and characterization of bi2o3 nanoparticles loaded on mesoporous mcm-41 nanoparticles by a simple solid-state dispersion (ssd) method. monoclinic bismuth oxide nanoparticles were prepared by polyacrylamide gel method and used as loading materials on the prepared mesoporous mcm-41 as a supporting material. fourier transform infrared spectroscopy (ft-ir), x-ray p...

OBJECTIVE The present study evaluated the subcutaneous connective tissue reactions and the radiopacity of MTA, Portland cement (PC), and Portland cement plus bismuth oxide (BO). STUDY DESIGN Forty rats were divided into 5 groups (n = 8 per group): A1: Control (empty capsule); A2: Pro-Root MTA; A3: PC; A4: PC + BO 1:1; and A5: PC + BO 2:1. Polyethylene tubes were filled with the test materials...

We use time-of-flight neutron powder diffraction to examine static displacive disorder in three different pyrochlore A2B2O6O 0 compounds with Bi on the A site. The compounds (Bi1.5Zn0.5)(Nb1.5Zn0.5)O6O 0 (BZN), (Bi1.5Zn0.5)(Ta1.5Zn0.5)O6O 0 (BZT), and (Bi1.5Zn0.5)(Sb1.5Zn0.5)O6O 0 (BZS), are of interest – particularly BZN – for their high dielectric constants in the absence of any phase transit...