{"id":87,"date":"2015-09-01T01:56:25","date_gmt":"2015-09-01T01:56:25","guid":{"rendered":"http:\/\/xaydungwebsite.org\/tanmy\/?p=87"},"modified":"2015-12-29T05:55:28","modified_gmt":"2015-12-29T05:55:28","slug":"dan-ha-noi-lo-lang-truoc-canh-bao-cat-nuoc","status":"publish","type":"post","link":"https:\/\/propsat.com\/dan-ha-noi-lo-lang-truoc-canh-bao-cat-nuoc\/","title":{"rendered":"M\u00e0ng nano bi\u1ebfn n\u01b0\u1edbc m\u1eb7n th\u00e0nh n\u01b0\u1edbc ng\u1ecdt si\u00eau hi\u1ec7u qu\u1ea3"},"content":{"rendered":"
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\n M\u00e0ng MoS2 l\u1ecdc n\u01b0\u1edbc. \u1ea2nh: Mohammad Heiranian\/University of Illinois<\/em><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n “Tr\u00e1i \u0110\u1ea5t l\u00e0 m\u1ed9t h\u00e0nh tinh \u0111\u1ea7y n\u01b0\u1edbc, nh\u01b0ng l\u1ea1i c\u00f3 r\u1ea5t \u00edt n\u01b0\u1edbc u\u1ed1ng \u0111\u01b0\u1ee3c”, gi\u00e1o s\u01b0 Narayana Aluru, chuy\u00ean ng\u00e0nh khoa h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed, \u0110\u1ea1i h\u1ecdc Illinois, tr\u01b0\u1edfng nh\u00f3m nghi\u00ean c\u1ee9u cho bi\u1ebft. “N\u1ebfu ch\u00fang ta c\u00f3 th\u1ec3 t\u00ecm ra m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p l\u1ecdc n\u01b0\u1edbc bi\u1ec3n v\u1edbi gi\u00e1 r\u1ebb, c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c cu\u1ed9c kh\u1ee7ng ho\u1ea3ng n\u01b0\u1edbc”.<\/p>\n Theo Sciencealert<\/em>, lo\u1ea1i v\u1eadt li\u1ec7u m\u1edbi cho c\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc \u0111i qua c\u00e1c l\u1ed7 c\u1ef1c nh\u1ecf, g\u1ecdi l\u00e0 “nanopores” v\u00e0 ch\u1eb7n l\u1ea1i mu\u1ed1i c\u00f9ng c\u00e1c ch\u1ea5t b\u1ea9n kh\u00e1c. \u0110\u00e2y l\u00e0 m\u1ed9t m\u00e0ng m\u1ecfng, \u0111\u1ed9 d\u00e0y c\u1ee1 nanomet, ch\u1ebf t\u1ea1o b\u1eb1ng v\u1eadt li\u1ec7u molybdenum disulphide (MoS2), v\u1edbi c\u00e1c l\u1ed7 nanopores. Molybdenum (Mo) l\u00e0 m\u1ed9t kim lo\u1ea1i chuy\u1ec3n ti\u1ebfp r\u1ea5t c\u1ee9ng v\u00e0 c\u00f3 m\u00e0u tr\u1eafng b\u1ea1c. M\u00e0ng n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng l\u1ecdc n\u01b0\u1edbc m\u1eb7n hi\u1ec7u qu\u1ea3 nh\u1ea5t trong s\u1ed1 c\u00e1c m\u00e0ng m\u1ecfng nano hi\u1ec7n nay, cao h\u01a1n m\u00e0ng graphene 70%.<\/p>\n MoS2 c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u tr\u00ean, c\u1ea3 v\u1ec1 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed v\u1eadn h\u00e0nh h\u1ec7 th\u1ed1ng kh\u1eed m\u1eb7n. Qu\u00e1 tr\u00ecnh kh\u1eed m\u1eb7n th\u00f4ng th\u01b0\u1eddng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd th\u1ea9m th\u1ea5u ng\u01b0\u1ee3c khi cho d\u00f2ng n\u01b0\u1edbc bi\u1ec3n \u0111i qua m\u1ed9t m\u00e0ng nh\u1ef1a m\u1ecfng. Tuy nhi\u00ean c\u00e1ch l\u00e0m n\u00e0y c\u00f3 m\u1ed9t s\u1ed1 nh\u01b0\u1ee3c \u0111i\u1ec3m.<\/p>\n K\u00edch th\u01b0\u1edbc micro c\u1ee7a c\u00e1c m\u00e0ng v\u1eabn l\u00e0 qu\u00e1 l\u1edbn n\u1ebfu so v\u1edbi nano (g\u1ea5p 1.000 l\u1ea7n), ngh\u0129a l\u00e0 c\u1ea7n \u0111\u1ea9y d\u00f2ng n\u01b0\u1edbc bi\u1ec3n v\u1edbi m\u1ed9t \u00e1p su\u1ea5t l\u1edbn h\u01a1n, c\u1ea7n nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng. Ch\u00fang c\u0169ng d\u1ec5 b\u1ecb t\u1eafc ngh\u1ebdn, l\u00e0m t\u0103ng chi ph\u00ed b\u1ea3o tr\u00ec.<\/p>\n V\u1edbi m\u00e0ng nano MoS2, n\u01b0\u1edbc bi\u1ec3n c\u00f3 th\u1ec3 \u0111i qua d\u1ec5 d\u00e0ng h\u01a1n, l\u00e0m gi\u1ea3m ho\u1eb7c m\u1ea5t h\u1eb3n c\u00e1c nh\u01b0\u1ee3c \u0111i\u1ec3m tr\u00ean. Ngo\u00e0i ra, theo c\u1ea5u t\u1ea1o ph\u00e2n t\u1eed MoS2, nguy\u00ean t\u1eed Mo n\u1eb1m \u1edf trung t\u00e2m s\u1ebd h\u00fat n\u01b0\u1edbc, trong khi l\u01b0u hu\u1ef3nh (S) th\u00ec \u0111\u1ea9y theo c\u00f9ng h\u01b0\u1edbng, l\u00e0m cho t\u1ed1c \u0111\u1ed9 n\u01b0\u1edbc \u0111i qua nanopore t\u0103ng.<\/p>\n “N\u00f3 k\u1ebft h\u1ee3p c\u1ea3 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ee7a MoS2 v\u00e0 d\u1ea1ng h\u00ecnh h\u1ecdc c\u1ee7a nanopore. Nh\u1edd \u0111\u00f3, ch\u00fang ta kh\u00f4ng c\u1ea7n ph\u1ea3i ch\u1ee9c n\u0103ng h\u00f3a c\u00e1c l\u1ed7 nanopore, qu\u00e1 tr\u00ecnh c\u1ef1c k\u1ef3 ph\u1ee9c t\u1ea1p v\u1edbi m\u00e0ng graphene”, Mohammad Heiranian, t\u00e1c gi\u1ea3 ch\u00ednh c\u1ee7a nghi\u00ean c\u1ee9u cho bi\u1ebft.<\/p>\n C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u s\u1ebd b\u1eaft tay v\u1edbi c\u00e1c h\u00e3ng s\u1ea3n xu\u1ea5t \u0111\u1ec3 \u0111\u01b0a c\u00f4ng ngh\u1ec7 n\u00e0y v\u00e0o cu\u1ed9c s\u1ed1ng. H\u1ecd t\u1ef1 tin c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t \u1edf quy m\u00f4 c\u00f4ng nghi\u1ec7p. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed Nature Communications h\u00f4m 14\/10.<\/p>\n C\u1ea5u tr\u00fac tinh th\u1ec3 MoS2. \u1ea2nh: The American Mineralogist Crystal Structure Database<\/em><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Nguy\u1ec5n Th\u00e0nh Minh<\/strong><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":" C\u00e1c k\u1ef9 s\u01b0 M\u1ef9 ph\u00e1t minh ra m\u1ed9t c\u00e1ch l\u1ecdc n\u01b0\u1edbc bi\u1ec3n m\u1edbi, c\u00f3 t\u00e1c d\u1ee5ng l\u1ecdc n\u01b0\u1edbc m\u1eb7n cao h\u01a1n m\u00e0ng graphene t\u1edbi 70%, c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft cu\u1ed9c kh\u1ee7ng ho\u1ea3ng n\u01b0\u1edbc ng\u1ecdt trong l\u00e2u d\u00e0i. Kh\u1eed m\u1eb7n n\u01b0\u1edbc bi\u1ec3n b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng gi\u00f3 v\u00e0 M\u1eb7t Tr\u1eddi M\u00e0ng MoS2 l\u1ecdc n\u01b0\u1edbc. \u1ea2nh: Mohammad Heiranian\/University of Illinois “Tr\u00e1i \u0110\u1ea5t l\u00e0 Continue Reading<\/a><\/p>\n","protected":false},"author":1,"featured_media":573,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77,75,79,71,15,93],"tags":[],"yoast_head":"\n |