"I-nitrogen emnyama" enemibono yegraphene eyenziwe kwilabhoratri

Namhlanje sibona indlela izazinzulu ezizama ngayo ukusebenzisa iimpawu ezimangalisayo zegraphene yezinto ezisandul' ukwenziwa. Kusandul’ ukuthenjiswa amathemba afanayo idityanisiwe kwilabhoratri, i-nitrogen-based material egama layo libonisa ukuba kunokwenzeka ukuhanjiswa okuphezulu okanye ukugcinwa kwamandla aphezulu.

Ukufunyaniswa kwenziwe liqela lamazwe ngamazwe lezazinzulu kwiYunivesithi yaseBayreuth eJamani. Ngokwemithetho yekhemistri kunye nefiziksi, enye ikhemikhali inokubakho ngohlobo lwezinto ezininzi ezahlukeneyo ezilula. Ngokomzekelo, i-oxygen (O2) inokuguqulwa ibe yi-ozone (O3), kunye nekhabhoni ibe yigraphite okanye idayimane. Iintlobo ezinjalo zobukho bento enye zibizwa iiallotropes. Ingxaki nge-nitrogen yayikukuba kukho ii-allotropes zayo ezimbalwa - malunga ne-15, kwaye zintathu kuphela kuzo zokuguqulwa kwepolymer. Kodwa ngoku enye i-polymer allotrope yale nto ifunyenwe, ebizwa ngokuba yi "nitrogen emnyama".

“I-Nitrogen emnyama” yaveliswa kusetyenziswa i-anvil yedayimane kuxinzelelo lwe-atmosphere ye-1,4 yezigidi kubushushu obungama-4000 °C. Phantsi kweemeko ezinjalo, i-nitrogen yafumana ubume obungazange bubonwe ukuza kuthi ga ngoku - i-crystal lattice yaqala ukufana ne-crystal lattice ye-phosphorus emnyama, eyabangela ukuba kubizwe isiphumo soko "nitrogen emnyama." Kule meko, i-nitrogen ine-dimensional-dimensional, nangona i-zigzag, isakhiwo. I-two-dimensionality icebisa ukuba ukuqhutywa kwenitrogen kweli lizwe kusenokuphinda-phinda iipropathi zegraphene, ezinokuba luncedo xa usebenzisa into kwizinto zombane.

Ukongeza, kwimeko entsha, i-athomu ye-nitrogen idityaniswe ngamabhondi omnye, abuthathaka ngokuphindwe kathandathu kune-triple bond, njengoko kunjalo nge-nitrogen ye-atmospheric (N2). Oku kuthetha ukuba ukubuya "kwe-nitrogen emnyama" kwimeko yayo yesiqhelo kuya kuhamba kunye nokukhululwa kwamandla abalulekileyo, kwaye le yindlela eya kumafutha okanye iiseli zamafutha. Kodwa konke oku kungaphambili, kwaye ukuza kuthi ga ngoku akukho nyathelo lithathiweyo kule ndlela, kodwa nje - bajonga kumngxuma wesitshixo babona into.

umthombo: 3dnews.ru