{"id":28320,"date":"2019-04-24T15:29:00","date_gmt":"2019-04-24T08:29:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=28320"},"modified":"2021-10-03T00:30:47","modified_gmt":"2021-10-02T17:30:47","slug":"phat-hien-cac-chat-xuc-tac-tiet-kiem-nang-luong-hoat-dong-o-nhiet-do-phong","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/phat-hien-cac-chat-xuc-tac-tiet-kiem-nang-luong-hoat-dong-o-nhiet-do-phong\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n c\u00e1c ch\u1ea5t x\u00fac t\u00e1c ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng"},"content":{"rendered":"\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i Vi\u1ec7n Ti\u00eau chu\u1ea9n v\u00e0 K\u1ef9 thu\u1eadt qu\u1ed1c gia (NIST), Hoa K\u1ef3 \u0111\u00e3 kh\u00e1m ph\u00e1 ra lo\u1ea1i ch\u1ea5t x\u00fac t\u00e1c m\u1edbi cho ph\u00e9p th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc, th\u01b0\u1eddng c\u1ea7n nhi\u1ec7t \u0111\u1ed9 cao, c\u00f3 th\u1ec3 di\u1ec5n ra \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. C\u00e1c ch\u1ea5t x\u00fac t\u00e1c ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng s\u1eed d\u1ee5ng \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi ho\u1eb7c m\u1ed9t ngu\u1ed3n s\u00e1ng kh\u00e1c \u0111\u1ec3 k\u00edch th\u00edch c\u00e1c plasmon b\u1ec1 m\u1eb7t c\u1ee5c b\u1ed9 (LSP) – c\u00e1c dao \u0111\u1ed9ng c\u1ee7a nh\u1eefng nh\u00f3m \u0111i\u1ec7n t\u1eed tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t nano kim lo\u1ea1i nh\u1ea5t \u0111\u1ecbnh nh\u01b0 v\u00e0ng, b\u1ea1c v\u00e0 nh\u00f4m. N\u0103ng l\u01b0\u1ee3ng thu \u0111\u01b0\u1ee3c t\u1eeb c\u00e1c dao \u0111\u1ed9ng LSP th\u00fac \u0111\u1ea9y ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc gi\u1eefa c\u00e1c ph\u00e2n t\u1eed b\u00e1m v\u00e0o c\u00e1c h\u1ea1t nano.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Tr\u01b0\u1edbc \u0111\u00e2y, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng hydro c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1ch th\u00e0nh c\u00e1c nguy\u00ean t\u1eed ri\u00eang l\u1ebb b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi nh\u1eefng dao \u0111\u1ed9ng LSP. Nh\u00f3m nghi\u00ean c\u1ee9u t\u1ea1i NIST hi\u1ec7n \u0111\u00e3 ph\u00e1t hi\u1ec7n ra ph\u1ea3n \u1ee9ng th\u1ee9 hai qua trung gian LSP di\u1ec5n ra \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. Trong ph\u1ea3n \u1ee9ng n\u00e0y, c\u00e1c LSP b\u1ecb k\u00edch th\u00edch trong c\u00e1c h\u1ea1t nano v\u00e0ng, bi\u1ebfn \u0111\u1ed5i hai ph\u00e2n t\u1eed CO th\u00e0nh cacbon v\u00e0 CO2. Ph\u1ea3n \u1ee9ng, th\u00f4ng th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi nhi\u1ec7t \u0111\u1ed9 t\u1ed1i thi\u1ec3u 400 \u0111\u1ed9 C, \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i CO th\u00e0nh c\u00e1c v\u1eadt li\u1ec7u t\u1eeb cacbon ph\u1ed5 bi\u1ebfn nh\u01b0 \u1ed1ng nano cacbon v\u00e0 than ch\u00ec.<\/p>\n\n\n\n

Nghi\u00ean c\u1ee9u c\u00e1c h\u1ea1t nano b\u1eb1ng ch\u00f9m \u0111i\u1ec7n t\u1eed v\u00e0 k\u1ebft h\u1ee3p d\u1eef li\u1ec7u v\u1edbi m\u00f4 ph\u1ecfng, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c nh\u1eefng v\u1ecb tr\u00ed tr\u00ean c\u00e1c h\u1ea1t nano v\u00e0ng n\u01a1i ph\u1ea3n \u1ee9ng x\u1ea3y ra. Ngo\u00e0i ra, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a c\u00e1c LSP v\u00e0 l\u1eadp b\u1ea3n \u0111\u1ed3 v\u1ec1 c\u00e1ch n\u0103ng l\u01b0\u1ee3ng li\u00ean quan \u0111\u1ebfn c\u00e1c dao \u0111\u1ed9ng thay \u0111\u1ed5i t\u1eeb nh\u1eefng v\u1ecb tr\u00ed kh\u00e1c nhau b\u00ean trong c\u00e1c h\u1ea1t nano. C\u00e1c s\u1ed1 \u0111o thu \u0111\u01b0\u1ee3c l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u vai tr\u00f2 c\u1ee7a LSP \u0111\u1ed1i v\u1edbi vi\u1ec7c b\u1eaft \u0111\u1ea7u c\u00e1c ph\u1ea3n \u1ee9ng \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, gi\u1ea3m nhu c\u1ea7u l\u00e0m n\u00f3ng m\u1eabu.<\/p>\n\n\n\n

C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 d\u1ef1a v\u00e0o vi\u1ec7c l\u1eafng \u0111\u1ecdng cacbon r\u1eafn, m\u1ed9t trong nh\u1eefng s\u1ea3n ph\u1ea9m c\u1ee7a ph\u1ea3n \u1ee9ng CO m\u00e0 h\u1ecd \u0111\u00e3 nghi\u00ean c\u1ee9u nh\u01b0 l\u00e0 c\u00e1c d\u1ea5u hi\u1ec7u v\u1ec1 nh\u1eefng v\u1ecb tr\u00ed ch\u00ednh x\u00e1c tr\u00ean c\u00e1c h\u1ea1t nano v\u00e0ng n\u01a1i di\u1ec5n ra ph\u1ea3n \u1ee9ng. Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 nh\u1eadn th\u1ea5y r\u1eb1ng ph\u1ea3n \u1ee9ng t\u1eadp trung t\u1ea1i giao di\u1ec7n n\u01a1i c\u00e1c ph\u00e2n t\u1eed kh\u00ed CO b\u00e1m v\u00e0o c\u00e1c h\u1ea1t nano v\u00e0ng v\u00e0 n\u01a1i bi\u00ean \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n tr\u01b0\u1eddng li\u00ean k\u1ebft v\u1edbi LSP l\u00e0 cao nh\u1ea5t. D\u00f9 nhi\u1ec1u LSP c\u00f3 th\u1ec3 b\u1ecb k\u00edch th\u00edch b\u1edfi \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi, nh\u01b0ng nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 ch\u1ecdn m\u1ed9t ch\u00f9m \u0111i\u1ec7n t\u1eed \u0111\u1ec3 k\u00edch ho\u1ea1t c\u00e1c dao \u0111\u1ed9ng v\u00e0 nghi\u00ean c\u1ee9u ph\u1ea3n \u1ee9ng CO trong k\u00ednh hi\u1ec3n vi \u0111i\u1ec7n t\u1eed truy\u1ec1n qua qu\u00e9t c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng.<\/p>\n\n\n\n

Nh\u1eefng ph\u00e1t hi\u1ec7n nghi\u00ean c\u1ee9u \u0111\u1eb7t n\u1ec1n t\u1ea3ng cho vi\u1ec7c t\u00ecm ki\u1ebfm c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c tr\u1ef1c ti\u1ebfp khai th\u00e1c \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi \u0111\u1ec3 t\u1ea1o ra LSP trong c\u00e1c h\u1ea1t nano nh\u1eb1m \u0111i\u1ec1u khi\u1ec3n c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. B\u1eb1ng c\u00e1ch gi\u1ea3m ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng, c\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y c\u00f3 th\u1ec3 c\u00f3 t\u00e1c \u0111\u1ed9ng r\u1ea5t l\u1edbn \u0111\u1ebfn ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u00e0 m\u00f4i tr\u01b0\u1eddng.<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i Vi\u1ec7n Ti\u00eau chu\u1ea9n v\u00e0 K\u1ef9 thu\u1eadt qu\u1ed1c gia (NIST), Hoa K\u1ef3 \u0111\u00e3 kh\u00e1m ph\u00e1 ra lo\u1ea1i ch\u1ea5t x\u00fac t\u00e1c m\u1edbi cho ph\u00e9p th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc, th\u01b0\u1eddng c\u1ea7n nhi\u1ec7t \u0111\u1ed9 cao, c\u00f3 th\u1ec3 di\u1ec5n ra \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. C\u00e1c ch\u1ea5t x\u00fac t\u00e1c ti\u1ebft ki\u1ec7m n\u0103ng […]<\/p>\n","protected":false},"author":25,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-28320","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=28320"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28320\/revisions"}],"predecessor-version":[{"id":28321,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28320\/revisions\/28321"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=28320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=28320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=28320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}