"US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "[1D6C04F4D39B]" . . "RIV/61989100:27640/06:00014372!RIV07-GA0-27640___" . . . . . . . "494249" . "Preparation of Mg-vermiculite nanoparticles using potassium persulfate" . "8" . . "Krato\u0161ov\u00E1, Gabriela" . "Val\u00E1\u0161kov\u00E1, Marta" . "\u0160upov\u00E1, Monika" . . . "Preparation of Mg-vermiculite nanoparticles using potassium persulfate"@en . "RIV/61989100:27640/06:00014372" . "Preparation of Mg-vermiculite nanoparticles using potassium persulfate" . "4"^^ . "1533-4880" . "Preparation of Mg-vermiculite nanoparticles using potassium persulfate"@cs . "4"^^ . . "2484-2488" . "Mg-vermiculite; exfoliation; potassium persulfate; hydrogen peroxide; X-ray diffraction; atomic force microscopy"@en . . . "27640" . . "Delamination/exfoliation process of the Mg-vermiculite (Letovice, CZE), particles with size less than 5 μm, was studied after potassium persulfate treatment and compared with known method of hydrogen peroxide treatment. X-ray powder diffraction patterns showed that treatment of Mg-vermiculite with different molar concentration of persulfate at the temperature 60 \u00B0C for 2 h. caused reduction of relative intensity of the basal 001 diffraction to the 15 %, 9 % and 4 %, respectively, compared to intensity of 001 diffraction of untreated Mg-vermiculite (100 %). On the other hand Irel. of the 001 diffraction of Mg-vermiculite after treatment with 30 % and 50 % hydrogen peroxide decreased only to Irel. = 36 % and 32 %, respectively. Atomic Force Microscopy and Scanning Electron Microscopy verified effect of the treatment on structure degradation connected with higher degree of delamination/exfoliation of the particles and their cracking into nano-sized particles." . . "4"^^ . "Mat\u011Bjka, Vlastimil" . "Preparation of Mg-vermiculite nanoparticles using potassium persulfate"@en . "6" . . "Byl studov\u00E1n proces delaminace/exfoliace Mg-vermikulitu (Letovice, \u010CR), s \u010D\u00E1sticemi pod 5 μm, po \u00FAprav\u011B peroxodis\u00EDranem draseln\u00FDm a provedeno srovn\u00E1n\u00ED s pou\u017E\u00EDvanou metodou \u00FApravy peroxidem vod\u00EDku. Z\u00E1znamy rtg pr\u00E1\u0161kov\u00E9 difrakce ukazuj\u00ED, \u017Ee \u00FAprava Mg-vermikulitu roztoky peroxodis\u00EDranu o r\u016Fzn\u00E9 mol\u00E1rn\u00ED koncentraci p\u0159i teplot\u011B 60 \u00B0C po dobu 2 h zp\u016Fsobily sn\u00ED\u017Een\u00ED relativn\u00ED intenzity baz\u00E1ln\u00ED 001 difrakce na 15 %, 9 % a 4 %, ve srovn\u00E1n\u00ED s intenzitou 001 diffrakce p\u016Fvodn\u00EDho Mg-vermikulitu (100 %). Oproti tomu, Irel. 001 difrakce Mg-vermikulitu po \u00FAprav\u011B 30 % a 50 % roztokem peroxidu vod\u00EDku se sn\u00ED\u017Eila pouze na Irel. = 36 % a 32 %. Mikroskopie atom\u00E1rn\u00EDch sil a skenovac\u00ED elektronov\u00E1 mikroskopie potvrdily vliv peroxodis\u00EDranu na strukturn\u00ED degradaci souvisej\u00EDc\u00ED s vy\u0161\u0161\u00EDm stupn\u011Bm delaminace/exfoliace \u010D\u00E1stic a jejich rozpad na nano\u010D\u00E1stice."@cs . "Delamination/exfoliation process of the Mg-vermiculite (Letovice, CZE), particles with size less than 5 μm, was studied after potassium persulfate treatment and compared with known method of hydrogen peroxide treatment. X-ray powder diffraction patterns showed that treatment of Mg-vermiculite with different molar concentration of persulfate at the temperature 60 \u00B0C for 2 h. caused reduction of relative intensity of the basal 001 diffraction to the 15 %, 9 % and 4 %, respectively, compared to intensity of 001 diffraction of untreated Mg-vermiculite (100 %). On the other hand Irel. of the 001 diffraction of Mg-vermiculite after treatment with 30 % and 50 % hydrogen peroxide decreased only to Irel. = 36 % and 32 %, respectively. Atomic Force Microscopy and Scanning Electron Microscopy verified effect of the treatment on structure degradation connected with higher degree of delamination/exfoliation of the particles and their cracking into nano-sized particles."@en . . . "P(GA205/05/2548), Z(MSM6198910016)" . "Journal of Nanoscience and Nanotechnology" . "Preparation of Mg-vermiculite nanoparticles using potassium persulfate"@cs . . . . . .