{"id":5913,"date":"2017-05-29T18:49:54","date_gmt":"2017-05-29T11:49:54","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=5913"},"modified":"2017-10-03T11:07:19","modified_gmt":"2017-10-03T04:07:19","slug":"chat-xuc-tac-moi-phan-tach-nuoc-hieu-qua-hon","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/chat-xuc-tac-moi-phan-tach-nuoc-hieu-qua-hon\/","title":{"rendered":"Ch\u1ea5t x\u00fac t\u00e1c m\u1edbi ph\u00e2n t\u00e1ch n\u01b0\u1edbc hi\u1ec7u qu\u1ea3 h\u01a1n"},"content":{"rendered":"

C\u00e1c nh\u00e0 v\u1eadt l\u00ed thu\u1ed9c \u0110\u1ea1i h\u1ecdc Houston \u0111\u00e3 ph\u00e1t hi\u1ec7n ra ch\u1ea5t x\u00fac t\u00e1c c\u00f3 th\u1ec3 ph\u00e2n t\u00e1ch n\u01b0\u1edbc th\u00e0nh hydro v\u00e0 oxy, bao g\u1ed3m c\u00e1c nguy\u00ean li\u1ec7u s\u1eb5n c\u00f3, gi\u00e1 r\u1ebb v\u00e0 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c ch\u1ea5t x\u00fac t\u00e1c tr\u01b0\u1edbc \u0111\u00f3.<\/strong><\/p>\n

\"\"<\/p>\n

\u0110i\u1ec1u n\u00e0y s\u1ebd gi\u1ea3i quy\u1ebft m\u1ed9t trong nh\u1eefng r\u00e0o c\u1ea3n ch\u1ee7 y\u1ebfu trong vi\u1ec7c s\u1eed d\u1ee5ng n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o ra hydro, m\u1ed9t trong nh\u1eefng ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng s\u1ea1ch h\u1ee9a h\u1eb9n nh\u1ea5t. “Hydro l\u00e0 ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng s\u01a1 c\u1ea5p s\u1ea1ch nh\u1ea5t m\u00e0 ch\u00fang ta c\u00f3 tr\u00ean Tr\u00e1i \u0111\u1ea5t”, Paul C. W. Chu, Ch\u1ee7 t\u1ecbch khoa h\u1ecdc c\u1ee7a TLL Temple, Gi\u00e1m \u0111\u1ed1c s\u00e1ng l\u1eadp v\u00e0 nh\u00e0 khoa h\u1ecdc c\u1ee7a Trung t\u00e2m Si\u00eau d\u1eabn Texas \u1edf \u0110\u1ea1i h\u1ecdc Houston, cho bi\u1ebft. “N\u01b0\u1edbc c\u00f3 th\u1ec3 l\u00e0 ngu\u1ed3n hydro ph\u1ed5 bi\u1ebfn nh\u1ea5t n\u1ebfu ch\u00fang ta c\u00f3 th\u1ec3 t\u00e1ch hydro ra kh\u1ecfi li\u00ean k\u1ebft m\u1ea1nh c\u1ee7a n\u00f3 v\u1edbi oxy trong n\u01b0\u1edbc b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ch\u1ea5t x\u00fac t\u00e1c”.<\/p>\n

Ch\u1ea5t x\u00fac t\u00e1c, bao g\u1ed3m metaphosphate s\u1eaft \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n tr\u00ean n\u1ec1n b\u1ecdt x\u1ed1p niken d\u1eabn \u0111i\u1ec7n, hi\u1ec7u qu\u1ea3 h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi c\u00e1c ch\u1ea5t x\u00fac t\u00e1c tr\u01b0\u1edbc \u0111\u00e2y, c\u0169ng nh\u01b0 \u00edt t\u1ed1n k\u00e9m h\u01a1n \u0111\u1ec3 s\u1ea3n xu\u1ea5t.
\n“Chi ph\u00ed r\u1ebb, th\u1ea5p h\u01a1n nhi\u1ec1u v\u00e0 hi\u1ec7u qu\u1ea3 t\u1ed1t h\u01a1n nhi\u1ec1u”, Zhifeng Ren, M.D. Anderson gi\u00e1o s\u01b0 v\u1eadt l\u00fd v\u00e0 t\u00e1c gi\u1ea3 ch\u00ednh b\u00e0i b\u00e1o cho bi\u1ebft. Ch\u1ea5t x\u00fac t\u00e1c c\u0169ng b\u1ec1n, ho\u1ea1t \u0111\u1ed9ng h\u01a1n 20 gi\u1edd v\u00e0 10.000 chu k\u1ef3 trong th\u1eed nghi\u1ec7m. “M\u1ed9t s\u1ed1 ch\u1ea5t x\u00fac t\u00e1c c\u0169ng xu\u1ea5t s\u1eafc nh\u01b0ng ch\u1ec9 \u1ed5n \u0111\u1ecbnh trong m\u1ed9t ho\u1eb7c hai gi\u1edd. Nh\u01b0 v\u1eady ch\u1eb3ng c\u00f3 \u00edch g\u00ec”, Ren n\u00f3i.<\/p>\n

M\u1eb7c d\u00f9 v\u1ec1 l\u00fd thuy\u1ebft l\u00e0 \u0111\u01a1n gi\u1ea3n, vi\u1ec7c ph\u00e2n t\u00e1ch n\u01b0\u1edbc th\u00e0nh hydro v\u00e0 oxy l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi hai ph\u1ea3n \u1ee9ng ri\u00eang bi\u1ec7t – ph\u1ea3n \u1ee9ng ti\u1ebfn h\u00f3a c\u1ee7a hydro v\u00e0 ph\u1ea3n \u1ee9ng ti\u1ebfn ho\u00e1 c\u1ee7a oxy, m\u1ed7i ph\u1ea3n \u1ee9ng y\u00eau c\u1ea7u \u0111i\u1ec7n c\u1ef1c ri\u00eang bi\u1ec7t. Trong khi hydro l\u00e0 th\u00e0nh ph\u1ea7n c\u00f3 gi\u00e1 tr\u1ecb h\u01a1n, n\u00f3 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ra m\u00e0 kh\u00f4ng t\u1ea1o ra oxy. V\u00e0 m\u1eb7c d\u00f9 c\u00e1c ch\u1ea5t x\u00fac t\u00e1c hydrogen hi\u1ec7u qu\u1ea3 c\u00f3 s\u1eb5n, tuy nhi\u00ean vi\u1ec7c thi\u1ebfu ch\u1ea5t x\u00fac t\u00e1c oxy r\u1ebb v\u00e0 hi\u1ec7u qu\u1ea3 \u0111\u00e3 t\u1ea1o ra b\u1ebf t\u1eafc trong l\u0129nh v\u1ef1c n\u00e0y.
\nTheo c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u, hydro c\u00f3 m\u1ed9t s\u1ed1 l\u1ee3i th\u1ebf, \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb ph\u00e2n t\u00e1ch n\u01b0\u1edbc b\u1eb1ng qu\u00e1 tr\u00ecnh \u0111i\u1ec7n h\u00f3a, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111i\u1ec7n ph\u00e2n n\u01b0\u1edbc, cho \u0111\u1ebfn nay \u0111\u01b0\u1ee3c coi l\u00e0 ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng s\u1ea1ch v\u00e0 b\u1ec1n v\u1eefng \u0111\u1ec3 thay th\u1ebf nhi\u00ean li\u1ec7u h\u00f3a th\u1ea1ch v\u00e0 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u n\u0103ng l\u01b0\u1ee3ng to\u00e0n c\u1ea7u \u0111ang gia t\u0103ng v\u00ec n\u01b0\u1edbc l\u00e0 v\u1eadt li\u1ec7u ban \u0111\u1ea7u duy nh\u1ea5t v\u00e0 s\u1ea3n ph\u1ea9m ph\u1ee5 khi n\u0103ng l\u01b0\u1ee3ng s\u1ea1ch \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch chuy\u1ec3n h\u00f3a hydro l\u1ea1i th\u00e0nh n\u01b0\u1edbc.<\/p>\n

Hydro c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef. Hi\u1ec7n nay, h\u1ea7u h\u1ebft kh\u00ed hydro \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng quy tr\u00ecnh h\u00f3a nhi\u1ec7t m\u00eatan v\u1edbi h\u01a1i n\u01b0\u1edbc v\u00e0 kh\u00ed h\u00f3a than, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0m t\u0103ng l\u01b0\u1ee3ng kh\u00ed th\u1ea3i cacbon c\u1ee7a nhi\u00ean li\u1ec7u m\u1eb7c d\u00f9 th\u1ef1c t\u1ebf n\u00f3 ch\u00e1y ho\u00e0n to\u00e0n.<\/p>\n

Chen cho bi\u1ebft, c\u00e1c ph\u1ea3n \u1ee9ng ti\u1ebfn ho\u00e1 oxy th\u01b0\u1eddng ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ea5t x\u00fac t\u00e1c \u0111i\u1ec7n h\u00f3a s\u1eed d\u1ee5ng m\u1ed9t kim lo\u1ea1i qu\u00fd nh\u01b0 iridi, b\u1ea1ch kim ho\u1eb7c ruteni. Nh\u01b0ng c\u00e1c ch\u1ea5t n\u00e0y \u0111\u1eaft ti\u1ec1n v\u00e0 kh\u00f4ng c\u00f3 s\u1eb5n.
\nRen n\u00f3i: “Trong nghi\u00ean c\u1ee9u n\u00e0y, ch\u00fang t\u00f4i ph\u00e1t hi\u1ec7n ra m\u1ed9t ch\u1ea5t x\u00fac t\u00e1c \u0111i\u1ec7n h\u00f3a ho\u1ea1t \u0111\u1ed9ng c\u00f3 \u0111\u1ed9 ho\u1ea1t h\u00f3a cao v\u00e0 r\u1ea5t \u1ed5n \u0111\u1ecbnh tr\u00ean c\u01a1 s\u1edf c\u00e1c nguy\u00ean t\u1ed1 d\u1ed3i d\u00e0o c\u1ee7a tr\u00e1i \u0111\u1ea5t, th\u1eadm ch\u00ed c\u00f2n t\u1ed1t h\u01a1n c\u00e1c kim lo\u1ea1i qu\u00fd. Ph\u00e1t hi\u1ec7n c\u1ee7a ch\u00fang t\u00f4i c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn kinh t\u1ebf h\u01a1n \u0111\u1ec3 s\u1ea3n xu\u1ea5t hydro b\u1eb1ng \u0111i\u1ec7n ph\u00e2n n\u01b0\u1edbc.”<\/p>\n

S\u1ef1 ph\u00e2n t\u00e1ch n\u01b0\u1edbc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1eb1ng d\u00f2ng \u0111i\u1ec7n ho\u1eb7c th\u00f4ng qua qu\u00e1 tr\u00ecnh quang x\u00fac t\u00e1c, s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi. Vi\u1ec7c ph\u00e2n t\u00e1ch n\u01b0\u1edbc tr\u1ef1c ti\u1ebfp b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi l\u00e0 r\u1ea5t kh\u00f4ng hi\u1ec7u qu\u1ea3, v\u00ec n\u01b0\u1edbc ch\u1ec9 c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 m\u1ed9t ph\u1ea7n nh\u1ecf c\u1ee7a ph\u1ed5 \u00e1nh s\u00e1ng. L\u00fd t\u01b0\u1edfng l\u00e0, Ren cho bi\u1ebft, n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra \u0111i\u1ec7n n\u0103ng d\u00f9ng cho ph\u00e2n t\u00e1ch n\u01b0\u1edbc.<\/p>\n

N.M.P (Science Daily, 5\/2017)<\/em><\/p>\n

Ngu\u1ed3n Vista<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c nh\u00e0 v\u1eadt l\u00ed thu\u1ed9c \u0110\u1ea1i h\u1ecdc Houston \u0111\u00e3 ph\u00e1t hi\u1ec7n ra ch\u1ea5t x\u00fac t\u00e1c c\u00f3 th\u1ec3 ph\u00e2n t\u00e1ch n\u01b0\u1edbc th\u00e0nh hydro v\u00e0 oxy, bao g\u1ed3m c\u00e1c nguy\u00ean li\u1ec7u s\u1eb5n c\u00f3, gi\u00e1 r\u1ebb v\u00e0 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c ch\u1ea5t x\u00fac t\u00e1c tr\u01b0\u1edbc \u0111\u00f3. \u0110i\u1ec1u n\u00e0y s\u1ebd gi\u1ea3i quy\u1ebft m\u1ed9t trong […]<\/p>\n","protected":false},"author":17,"featured_media":6541,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-5913","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5913","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\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=5913"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5913\/revisions"}],"predecessor-version":[{"id":6542,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5913\/revisions\/6542"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/6541"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=5913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=5913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=5913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}