Lub koom haum tshawb fawb Lavxias tau tsim ib txoj hauv kev rau Encapsulating Nuclear khib nyiab siv nanodiamonds.

Cov kws tshawb fawb ntawm lub koom haum ntawm Geochemistry thiab Analytical Chemistry ntawm Lavxias Academy ntawm Sciences (GEOHI RAN) tsis ntev los no tau tshaj tawm tias lawv muaj thawj zaug tau thov siv nanodiamonds synthesized los ntawm txoj kev tawg los txhim kho kev ua tau zoo ntawm cov ntxhia -xws li magnesium-potassium-phosphate khib nyiab. Los ntawm kev ntxiv nanodiamonds rau MKF composites, cov kws tshawb fawb tau ua tiav txo cov khoom porosity thaum tib lub sijhawm txhim kho nws cov khoom siv zog, thermal conductivity, thiab tsis kam mus rau radionuclide leaching. Cov txiaj ntsig kev tshawb fawb cuam tshuam tau luam tawm hauv phau ntawv xov xwm thoob ntiaj teb * Phau ntawv Journal of Composites Science *.

 

Nuclear pov tseg yuav tsum tau hloov mus rau hauv cov tshuaj lom neeg thiab cov khoom siv hluav taws xob ruaj khov ua ntej kev pov tseg zaum kawg los tiv thaiv radionuclide to hauv ib puag ncig. MKF composites yog cov khoom cog lus rau solidifying nuclear pov tseg thiab yav tas los validated nyob rau hauv lub GEOHI RAN kuaj.

 

Nyob rau hauv txoj kev tshawb no, cov kws tshawb fawb tau npaj qhia cov nanodiamonds rau hauv MKF cov khoom siv los txhim kho lawv cov kev ua tau zoo. Nanodiamonds, nrog rau lawv thaj chaw loj thiab hluav taws xob - tiv taus thiab siab - kub- tiv taus cov khoom, yog cov adsorbents zoo heev rau cov xov tooj cua nuclides. Pab neeg tshawb fawb thawj zaug siv nanodiamonds ua ntej -adsorb actinides (xws li plutonium-239 thiab uranium-238) thiab lub ntiaj teb tsis tshua muaj (xws li, europium) los ntawm simulated radioactive pov tseg, thiab tom qab ntawd immobilized lawv hauv MKF matrix.

 

Svetlana Fimina, tus kws tshawb fawb laus thiab PhD hauv chemistry ntawm GEOKI RAN Radiochemistry Laboratory, tau hais tias: "Qhov kev tshawb fawb no, tau txais nyiaj los ntawm Lavxias Science Foundation (Project No. 24-13-00430), siv nanodiamonds ua ntej-adsorb actinides thiab fission cov khoom ua ntej solidifying lawv rau hauv MKF txoj kev ruaj ntseg. geological pov tseg ntawm nuclear pov tseg Cov txiaj ntsig tau qhia txog kev cuam tshuam zoo ntawm cov nanodiamonds tawg ntawm cov khoom siv hluav taws xob ntawm MKF cov ntaub ntawv sib xyaw. " Cov khoom siv sib xyaw no ua rau muaj txiaj ntsig zoo rau kev tawm tsam ntawm radionuclides, txo cov leaching ntawm plutonium-239, uranium-238, thiab europium los ntawm 3 mus rau 8 npaug piv rau cov khoom qub MKF. Qhov kev txhim kho no feem ntau yog los ntawm pre-adsorption ntawm radionuclides los ntawm nanodiamonds thiab lawv ruaj khov nyob rau hauv cov khoom.

 

Nws tau nkag siab tias qhov kev nyab xeeb pov tseg ntawm cov pov tseg uas muaj -nyob radionuclides ntev yog ib qho ntawm cov teeb meem tseem ceeb hauv kev siv hluav taws xob nuclear. Magnesium-potassium- cov ntaub ntawv phosphate, vim lawv cov khoom muaj zog zoo heev, tau nquag kawm txog kev ua kom muaj zog thiab cov peev txheej rov qab los ntawm cov pov tseg nuclear, tshwj xeeb tshaj yog rau encapsulating radioactive cov ntsiab lus nyob rau hauv ib tug ruaj khov magnesium-potassium phosphate matrix kom txo tau lawv cov kev tsiv teb tsaws thiab kev sib kis. Piv txwv li, magnesium-potassium phosphate cement tuaj yeem siv los ua kom cov dej khib nyiab pov tseg los yog cov khoom seem, ua tiav cov ntim pov tseg thiab ruaj khov. Txawm li cas los xij, cov txheej txheem nws tus kheej cuam tshuam nrog cov tshuaj lom neeg tsis sib haum xeeb thiab kev kho hluav taws xob, yuav tsum tau siv cov cuab yeej siv pov tseg kom zoo.