{"id":126666,"date":"2023-03-31T10:40:51","date_gmt":"2023-03-31T02:40:51","guid":{"rendered":"https:\/\/www.alpapowder.com\/126666\/"},"modified":"2023-03-31T10:40:52","modified_gmt":"2023-03-31T02:40:52","slug":"cong-nghe-sua-doi-lop-phu-vo-co-va-huu-co-titanium-dioxide","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/126666\/","title":{"rendered":"C\u00f4ng ngh\u1ec7 s\u1eeda \u0111\u1ed5i l\u1edbp ph\u1ee7 v\u00f4 c\u01a1 v\u00e0 h\u1eefu c\u01a1 Titanium dioxide"},"content":{"rendered":"

\"\"<\/p>\n

Rutile titan dioxide l\u00e0 ch\u1ea5t b\u00e1n d\u1eabn c\u00f3 \u0111\u1ed9 r\u1ed9ng v\u00f9ng c\u1ea5m kho\u1ea3ng 3,0eV. N\u00f3 c\u00f3 ho\u1ea1t t\u00ednh quang x\u00fac t\u00e1c m\u1ea1nh m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t, do \u0111\u00f3 n\u00f3 c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c g\u1ed1c t\u1ef1 do oxy ho\u1ea1t t\u00ednh cao d\u01b0\u1edbi b\u1ee9c x\u1ea1 c\u1ee7a tia c\u1ef1c t\u00edm m\u1eb7t tr\u1eddi. , g\u1ed1c oxy t\u1ef1 do n\u00e0y c\u00f3 th\u1ec3 ph\u00e1t huy kh\u1ea3 n\u0103ng oxy h\u00f3a m\u1ea1nh, s\u1ebd l\u00e0m h\u1ecfng m\u00f4i tr\u01b0\u1eddng xung quanh titan dioxide v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd c\u1ee7a s\u1ea3n ph\u1ea9m. Do \u0111\u00f3, s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 c\u1ef1c k\u1ef3 quan tr\u1ecdng trong s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ebf bi\u1ebfn titan dioxide.<\/p>\n

S\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c ch\u1ea5t ph\u1ee5 gia s\u1eeda \u0111\u1ed5i \u0111\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi b\u1ec1 m\u1eb7t c\u1ee7a titan dioxide, do \u0111\u00f3 thay \u0111\u1ed5i c\u00e1c \u0111\u1eb7c t\u00ednh b\u1ec1 m\u1eb7t v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m. Hi\u1ec7n t\u1ea1i, vi\u1ec7c s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a titan dioxide \u0111\u01b0\u1ee3c chia th\u00e0nh hai ph\u01b0\u01a1ng ph\u00e1p: l\u1edbp ph\u1ee7 v\u00f4 c\u01a1 v\u00e0 l\u1edbp ph\u1ee7 h\u1eefu c\u01a1.<\/p>\n

1. L\u1edbp ph\u1ee7 v\u00f4 c\u01a1 titan dioxide<\/p>\n

L\u1edbp ph\u1ee7 v\u00f4 c\u01a1 l\u00e0 ph\u1ee7 b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t titan dioxide b\u1eb1ng m\u1ed9t l\u1edbp m\u00e0ng m\u1ecfng v\u00f4 c\u01a1 m\u1ed9t l\u1edbp ho\u1eb7c nhi\u1ec1u l\u1edbp b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ph\u1ea3n \u1ee9ng l\u1eafng \u0111\u1ecdng, t\u1ea1o th\u00e0nh m\u1ed9t r\u00e0o c\u1ea3n gi\u1eefa c\u00e1c h\u1ea1t v\u00e0 m\u00f4i tr\u01b0\u1eddng, \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a titan dioxide. Vi\u1ec7c s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t v\u00f4 c\u01a1 c\u1ee7a titan dioxide th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng l\u1edbp ph\u1ee7 nh\u00f4m, l\u1edbp ph\u1ee7 silicon<\/a>, l\u1edbp ph\u1ee7 zirconium v\u00e0 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p ph\u1ee7 h\u1ed7n h\u1ee3p.<\/p>\n

\u0110\u1ed1i v\u1edbi l\u1edbp ph\u1ee7 silicon<\/a>, m\u00e0ng \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh trong \u0111i\u1ec1u ki\u1ec7n trung t\u00ednh v\u00e0 h\u01a1i axit t\u01b0\u01a1ng \u0111\u1ed1i “m\u1ec1m”, trong khi m\u00e0ng \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh trong \u0111i\u1ec1u ki\u1ec7n ki\u1ec1m t\u01b0\u01a1ng \u0111\u1ed1i d\u00e0y \u0111\u1eb7c, th\u01b0\u1eddng th\u00f4ng qua qu\u00e1 tr\u00ecnh th\u1ee7y ph\u00e2n natri silicat \u0111\u1ec3 t\u1ea1o ra silicon. C\u00e1c mixen sau \u0111\u00f3 \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh tr\u00ean b\u1ec1 m\u1eb7t titan dioxit qua li\u00ean k\u1ebft Ti-O-Si, \u0111\u1ed3ng th\u1eddi, s\u1ef1 h\u00ecnh th\u00e0nh li\u00ean k\u1ebft Si-O-Si c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00e0ng li\u00ean t\u1ee5c v\u00e0 \u0111\u1ed3ng nh\u1ea5t.<\/p>\n

\u0110\u1ed1i v\u1edbi l\u1edbp ph\u1ee7 nh\u00f4m, li\u00ean k\u1ebft Ti-O-Al \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh th\u00f4ng qua ph\u1ea3n \u1ee9ng c\u1ee7a OH-Al v\u00e0 nh\u00f3m -OH tr\u00ean b\u1ec1 m\u1eb7t titan dioxit. S\u1ef1 gia t\u0103ng s\u1ed1 l\u01b0\u1ee3ng c\u00e1c c\u1ee5m t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho l\u1edbp ph\u1ee7. \u0110\u1ed3ng th\u1eddi, trong \u0111i\u1ec1u ki\u1ec7n pH cao, t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng c\u00f3 h\u01b0\u1edbng c\u1ee7a OH-Al chi\u1ebfm \u01b0u th\u1ebf so v\u1edbi t\u1ed1c \u0111\u1ed9 l\u1eafng khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng l\u00ean v\u00e0 h\u00ecnh th\u00e1i m\u00e0ng thay \u0111\u1ed5i t\u1eeb c\u00e1c l\u1edbp gi\u1ed1ng nh\u01b0 t\u1ea5m \u0111\u1ed3ng nh\u1ea5t v\u00e0 li\u00ean t\u1ee5c th\u00e0nh c\u00e1c b\u00f4ng t\u01b0\u01a1ng \u0111\u1ed1i l\u1ecfng l\u1ebbo. .<\/p>\n

L\u1edbp ph\u1ee7 v\u00f4 c\u01a1 \u0111\u01b0\u1ee3c chia c\u1ee5 th\u1ec3 th\u00e0nh hai ph\u01b0\u01a1ng ph\u00e1p: l\u1edbp ph\u1ee7 kh\u00f4 v\u00e0 l\u1edbp ph\u1ee7 \u01b0\u1edbt theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd kh\u00e1c nhau.<\/p>\n

(1) L\u1edbp ph\u1ee7 kh\u00f4 titan dioxit<\/p>\n

Trong l\u1edbp ph\u1ee7 kh\u00f4, c\u00e1c halogen kim lo\u1ea1i th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1eafn v\u00e0o b\u1ec1 m\u1eb7t titan dioxide b\u1eb1ng c\u00e1ch phun kh\u00f4ng kh\u00ed, v\u00e0 sau khi nung v\u00e0 oxy h\u00f3a, h\u01a1i n\u01b0\u1edbc n\u00f3ng \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o \u0111\u1ec3 th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh th\u1ee7y ph\u00e2n c\u1ee7a n\u00f3 \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp m\u00e0ng m\u1ecfng tr\u00ean b\u1ec1 m\u1eb7t h\u1ea1t.<\/p>\n

(2) L\u1edbp ph\u1ee7 \u01b0\u1edbt titan dioxit<\/p>\n

L\u1edbp ph\u1ee7 \u01b0\u1edbt ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc, c\u0169ng \u0111\u01b0\u1ee3c chia th\u00e0nh ba lo\u1ea1i: ph\u01b0\u01a1ng ph\u00e1p \u0111un s\u00f4i, ph\u01b0\u01a1ng ph\u00e1p trung h\u00f2a v\u00e0 ph\u01b0\u01a1ng ph\u00e1p cacbon h\u00f3a.<\/p>\n

2. L\u1edbp ph\u1ee7 h\u1eefu c\u01a1 titan dioxide<\/p>\n

L\u1ecbch s\u1eed ph\u00e1t tri\u1ec3n c\u1ee7a l\u1edbp ph\u1ee7 h\u1eefu c\u01a1 ng\u1eafn h\u01a1n so v\u1edbi l\u1edbp ph\u1ee7 v\u00f4 c\u01a1, nh\u01b0ng n\u00f3 ph\u00e1t tri\u1ec3n r\u1ea5t nhanh do \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a li\u1ec1u l\u01b0\u1ee3ng nh\u1ecf (th\u01b0\u1eddng ch\u1ec9 t\u1eeb 0,1% \u0111\u1ebfn 1% tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a ch\u1ea5t m\u00e0u) v\u00e0 hi\u1ec7u qu\u1ea3 l\u1edbn. C\u00f3 ba ph\u01b0\u01a1ng ph\u00e1p ph\u1ee7 h\u1eefu c\u01a1 ch\u00ednh trong ph\u00f2ng th\u00ed nghi\u1ec7m, \u0111\u00f3 l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u01b0\u1edbt ph\u00e2n t\u00e1n t\u1ed1c \u0111\u1ed9 cao, ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00e1n rung v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n b\u1ed9t b\u1eb1ng m\u00e1y kh\u00ed. Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m h\u00e0ng ng\u00e0y, ch\u00fang t\u00f4i ch\u1ee7 y\u1ebfu \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u01b0\u1edbt ph\u00e2n t\u00e1n t\u1ed1c \u0111\u1ed9 cao \u0111\u1ec3 x\u1eed l\u00fd.<\/p>\n

N\u00f3i chung, trong qu\u00e1 tr\u00ecnh ph\u1ee7 h\u1eefu c\u01a1, m\u1ed9t ph\u1ea7n c\u1ee7a ch\u1ea5t x\u1eed l\u00fd h\u1eefu c\u01a1 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi b\u1ec1 m\u1eb7t c\u1ee7a titan dioxide b\u1eb1ng c\u00e1ch h\u1ea5p ph\u1ee5 v\u1eadt l\u00fd, v\u00e0 ph\u1ea7n c\u00f2n l\u1ea1i ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c nh\u00f3m hydroxyl tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t v\u00e0 sau \u0111\u00f3 k\u1ebft h\u1ee3p ch\u1eb7t ch\u1ebd v\u1edbi b\u1ec1 m\u1eb7t titan dioxit. Ch\u1ea5t ph\u00e2n t\u00e1n, ch\u1ea5t li\u00ean k\u1ebft, ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t, vv \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n

3. Ph\u1ee7 composite v\u1edbi titanium dioxide<\/p>\n

V\u00ec l\u1edbp ph\u1ee7 v\u00f4 c\u01a1 v\u00e0 l\u1edbp ph\u1ee7 h\u1eefu c\u01a1 c\u00f3 \u0111i\u1ec3m nh\u1ea5n ri\u00eang. N\u00f3i chung, m\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a l\u1edbp ph\u1ee7 v\u00f4 c\u01a1 l\u00e0 gi\u1ea3m ho\u1ea1t t\u00ednh quang x\u00fac t\u00e1c c\u1ee7a titan \u0111ioxit, c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft, do \u0111\u00f3 t\u0103ng tu\u1ed5i th\u1ecd c\u1ee7a s\u1ea3n ph\u1ea9m, trong khi m\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a l\u1edbp ph\u1ee7 h\u1eefu c\u01a1 l\u00e0 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n c\u1ee7a s\u1ea3n ph\u1ea9m trong ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng kh\u00e1c nhau v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh ph\u00e2n t\u00e1n.<\/p>\n

Hai ph\u01b0\u01a1ng ph\u00e1p kh\u00f4ng th\u1ec3 thay th\u1ebf l\u1eabn nhau, do \u0111\u00f3, trong c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a l\u1edbp ph\u1ee7 v\u00f4 c\u01a1 \u0111\u1ea7u ti\u00ean v\u00e0 sau \u0111\u00f3 l\u00e0 s\u1eeda \u0111\u1ed5i h\u1eefu c\u01a1 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t titan dioxide \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c \u0111\u00edch, \u0111\u00f3 l\u00e0 s\u1eed d\u1ee5ng silicon<\/a>, Ch\u1ea5t v\u00f4 c\u01a1 h\u00f2a tan c\u00e1c ngu\u1ed3n nh\u01b0 nh\u00f4m v\u00e0 zirconi (nh\u01b0 silicon dioxide, nh\u00f4m oxit, v.v.) ho\u00e0n th\u00e0nh m\u1ed9t ho\u1eb7c th\u1eadm ch\u00ed nhi\u1ec1u l\u1edbp l\u1edbp ph\u1ee7 v\u00f4 c\u01a1 trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 v\u00e0 pH th\u00edch h\u1ee3p t\u01b0\u01a1ng \u1ee9ng \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft. Sau \u0111\u00f3, ch\u1ecdn m\u1ed9t c\u1ea5u tr\u00fac c\u1ea7u n\u1ed1i ph\u00f9 h\u1ee3p \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c nh\u00f3m axit b\u00e9o ho\u1eb7c axit th\u01a1m c\u00f3 t\u00ednh \u01b0a n\u01b0\u1edbc m\u1ea1nh \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n trong n\u01b0\u1edbc v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh ph\u00e2n t\u00e1n c\u1ee7a n\u00f3.<\/p>\n","protected":false},"excerpt":{"rendered":"

S\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c ch\u1ea5t ph\u1ee5 gia s\u1eeda \u0111\u1ed5i \u0111\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi b\u1ec1 m\u1eb7t c\u1ee7a titan dioxide, do \u0111\u00f3 thay \u0111\u1ed5i c\u00e1c \u0111\u1eb7c t\u00ednh b\u1ec1 m\u1eb7t v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m.<\/p>\n","protected":false},"author":7,"featured_media":126613,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-126666","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghiep-tin-tuc-vi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/126666","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=126666"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/126666\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/126613"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=126666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=126666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=126666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}