Abstract Layered double hydroxides (LDHs) of various compositions, i.e. Mg–Al, Mg–Mn–Al, are applied as the precursors metal oxides for preparation N-doped carbon materials via chemical vapour deposition (CVD) with acetonitrile (as and nitrogen source) at 600 700 °C. The use Mn-containing LDHs is a novelty. impact transition species, Mn x O y , in blend derived from on amount deposit its compos...

this radionuclide is almost exclusively produced from the decay of its parent 99mo. 99mtc is themost available and important nuclide used as a diagnostic agent in nuclear medicine. to develop anewly practical 99mtc generator using ( n,y ) 99mo, an inorganic polymer adsorbent has beendeveloped framed with oxygen-zirconium-chlorine bonds with a high adsorption of mo, thepolyzirconium adsorbent wa...