{"id":1283,"date":"2026-06-16T10:32:27","date_gmt":"2026-06-16T02:32:27","guid":{"rendered":"https:\/\/www.daoanchemical.com\/?p=1283"},"modified":"2026-06-16T10:32:27","modified_gmt":"2026-06-16T02:32:27","slug":"adsorption-properties-of-nano-zinc-oxide","status":"publish","type":"post","link":"https:\/\/www.daoanchemical.com\/vi\/adsorption-properties-of-nano-zinc-oxide\/","title":{"rendered":"T\u00ednh ch\u1ea5t h\u1ea5p ph\u1ee5 c\u1ee7a K\u1ebdm Oxit Nano"},"content":{"rendered":"

V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng c\u1ee7a c\u00f4ng nghi\u1ec7p h\u00f3a, c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m nh\u01b0 kim lo\u1ea1i n\u1eb7ng, thu\u1ed1c nhu\u1ed9m h\u1eefu c\u01a1 v\u00e0 d\u01b0 l\u01b0\u1ee3ng thu\u1ed1c tr\u1eeb s\u00e2u trong n\u01b0\u1edbc v\u00e0 \u0111\u1ea5t ng\u00e0y c\u00e0ng tr\u1edf n\u00ean nghi\u00eam tr\u1ecdng. C\u00e1c ch\u1ea5t h\u1ea5p ph\u1ee5 truy\u1ec1n th\u1ed1ng (nh\u01b0 than ho\u1ea1t t\u00ednh v\u00e0 zeolit) g\u1eb7p ph\u1ea3i nh\u1eefng h\u1ea1n ch\u1ebf nh\u01b0 kh\u1ea3 n\u0103ng h\u1ea5p ph\u1ee5 th\u1ea5p, ch\u1ecdn l\u1ecdc k\u00e9m v\u00e0 kh\u00f3 t\u00e1i sinh. Do \u0111\u00f3, vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c ch\u1ea5t h\u1ea5p ph\u1ee5 m\u1edbi, hi\u1ec7u qu\u1ea3 cao, th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u00f3 th\u1ec3 t\u00e1i t\u1ea1o \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t ch\u1ee7 \u0111\u1ec1 n\u00f3ng trong nghi\u00ean c\u1ee9u m\u00f4i tr\u01b0\u1eddng.<\/p>\n

Oxit k\u1ebdm nano<\/a><\/span><\/strong> g\u1ed3m c\u00e1c tinh th\u1ec3 k\u1ebdm oxit c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t t\u1eeb 1 \u0111\u1ebfn 100 nm. N\u00f3 c\u00f3 c\u1ea5u tr\u00fac k\u1ebdm blende h\u00ecnh l\u1ee5c gi\u00e1c v\u00e0 mang l\u1ea1i nh\u1eefng \u01b0u \u0111i\u1ec3m nh\u01b0 hi\u1ec7u \u1ee9ng b\u1ec1 m\u1eb7t, hi\u1ec7u \u1ee9ng k\u00edch th\u01b0\u1edbc l\u01b0\u1ee3ng t\u1eed v\u00e0 t\u00ednh ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc cao. So v\u1edbi k\u1ebdm oxit th\u00f4ng th\u01b0\u1eddng, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang c\u1ee7a k\u1ebdm oxit nano c\u00f3 th\u1ec3 t\u0103ng g\u1ea5p h\u00e0ng ch\u1ee5c l\u1ea7n. B\u1ec1 m\u1eb7t c\u1ee7a n\u00f3 gi\u00e0u c\u00e1c nh\u00f3m ho\u1ea1t \u0111\u1ed9ng nh\u01b0 nh\u00f3m hydroxyl (\u2013OH), v\u00e0 \u0111i\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng pH, cho ph\u00e9p h\u1ea5p ph\u1ee5 hi\u1ec7u qu\u1ea3 nhi\u1ec1u lo\u1ea1i ch\u1ea5t \u00f4 nhi\u1ec5m kh\u00e1c nhau. Ngo\u00e0i ra, t\u00ednh b\u00e1n d\u1eabn c\u1ee7a n\u00f3 c\u00f2n mang l\u1ea1i kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y quang x\u00fac t\u00e1c, cho ph\u00e9p th\u1ef1c hi\u1ec7n qu\u00e1 tr\u00ecnh \u201ch\u1ea5p ph\u1ee5 \u2013 ph\u00e2n h\u1ee7y\u201d t\u00edch h\u1ee3p, c\u00f3 gi\u00e1 tr\u1ecb \u1ee9ng d\u1ee5ng kh\u00f4ng th\u1ec3 thay th\u1ebf trong x\u1eed l\u00fd m\u00f4i tr\u01b0\u1eddng.<\/p>\n

\"Nano-Zinc
Oxit k\u1ebdm nano<\/figcaption><\/figure>\n

\u0110\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac v\u00e0 c\u01a1 ch\u1ebf h\u1ea5p ph\u1ee5 c\u1ee7a k\u1ebdm oxit nano<\/b><\/strong><\/h2>\n

(I) \u0110\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac<\/b><\/strong><\/h3>\n

Nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ed1t l\u00f5i c\u1ee7a k\u1ebdm oxit nano xu\u1ea5t ph\u00e1t t\u1eeb c\u00e1c hi\u1ec7u \u1ee9ng \u1edf quy m\u00f4 nano:<\/p>\n

Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang l\u1edbn: K\u00edch th\u01b0\u1edbc h\u1ea1t c\u00e0ng nh\u1ecf th\u00ec di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang c\u00e0ng l\u1edbn. V\u00ed d\u1ee5, ZnO NPs c\u00f3 k\u00edch th\u01b0\u1edbc 30\u201350 nm c\u00f3 th\u1ec3 \u0111\u1ea1t di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang t\u1eeb 12\u201350 m\u00b2\/g, cung c\u1ea5p nhi\u1ec1u v\u1ecb tr\u00ed ho\u1ea1t \u0111\u1ed9ng cho h\u1ea5p ph\u1ee5;<\/p>\n

Nhi\u1ec1u v\u1ecb tr\u00ed ho\u1ea1t \u0111\u1ed9ng tr\u00ean b\u1ec1 m\u1eb7t: C\u00e1c nguy\u00ean t\u1eed b\u1ec1 m\u1eb7t ch\u01b0a b\u00e3o h\u00f2a v\u1ec1 ph\u1ed1i tr\u00ed, v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c khuy\u1ebft t\u1eadt oxy, khuy\u1ebft t\u1eadt k\u1ebdm v\u00e0 nh\u00f3m hydroxyl (\u2013Zn\u2013OH), c\u00f3 th\u1ec3 t\u1ea1o li\u00ean k\u1ebft h\u00f3a h\u1ecdc ho\u1eb7c li\u00ean k\u1ebft hydro v\u1edbi c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m;<\/p>\n

\u0110i\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh: \u0110i\u1ec3m trung h\u00f2a \u0111i\u1ec7n t\u00edch (PZC) v\u00e0o kho\u1ea3ng 9\u201310. Khi pH PZC, b\u1ec1 m\u1eb7t mang \u0111i\u1ec7n t\u00edch \u00e2m (\u2013Zn\u2013O\u207b), h\u1ea5p ph\u1ee5 c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m d\u01b0\u01a1ng;<\/p>\n

T\u00ednh hi\u1ec7p \u0111\u1ed3ng quang x\u00fac t\u00e1c: D\u01b0\u1edbi \u00e1nh s\u00e1ng UV, c\u1eb7p electron \u2013 l\u1ed7 tr\u1ed1ng \u0111\u01b0\u1ee3c t\u1ea1o ra, s\u1ea3n sinh c\u00e1c g\u1ed1c c\u00f3 t\u00ednh oxy h\u00f3a m\u1ea1nh nh\u01b0 g\u1ed1c hydroxyl (\u30fbOH), c\u00f3 th\u1ec3 ph\u00e2n h\u1ee7y c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m h\u1eefu c\u01a1 h\u1ea5p ph\u1ee5 th\u00e0nh CO\u2082 v\u00e0 H\u2082O, nh\u1edd \u0111\u00f3 t\u00e1i t\u1ea1o c\u00e1c v\u1ecb tr\u00ed h\u1ea5p ph\u1ee5.<\/p>\n

(II) C\u01a1 ch\u1ebf h\u1ea5p ph\u1ee5<\/b><\/strong><\/h3>\n

S\u1ef1 h\u1ea5p ph\u1ee5 c\u1ee7a c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m b\u1edfi k\u1ebdm oxit nano l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh hi\u1ec7p \u0111\u1ed3ng bao g\u1ed3m h\u1ea5p ph\u1ee5 v\u1eadt l\u00fd, h\u1ea5p ph\u1ee5 h\u00f3a h\u1ecdc, ph\u1ee9c h\u1ee3p b\u1ec1 m\u1eb7t, t\u01b0\u01a1ng t\u00e1c t\u0129nh \u0111i\u1ec7n v\u00e0 k\u1ebft h\u1ee3p quang x\u00fac t\u00e1c:<\/p>\n

H\u1ea5p ph\u1ee5 v\u1eadt l\u00fd: Ph\u1ee5 thu\u1ed9c v\u00e0o l\u1ef1c van der Waals; c\u00e1c ph\u00e2n t\u1eed ch\u1ea5t \u00f4 nhi\u1ec5m t\u00edch t\u1ee5 th\u00e0nh m\u1ed9t ho\u1eb7c nhi\u1ec1u l\u1edbp tr\u00ean b\u1ec1 m\u1eb7t ZnO NP; c\u00f3 t\u00ednh thu\u1eadn ngh\u1ecbch cao v\u00e0 chi\u1ebfm \u01b0u th\u1ebf \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p;<\/p>\n

H\u1ea5p ph\u1ee5 h\u00f3a h\u1ecdc (chi\u1ebfm \u01b0u th\u1ebf): C\u00e1c nh\u00f3m hydroxyl b\u1ec1 m\u1eb7t t\u1ea1o li\u00ean k\u1ebft h\u00f3a h\u1ecdc v\u1edbi ch\u1ea5t \u00f4 nhi\u1ec5m; v\u00ed d\u1ee5, c\u00e1c ion kim lo\u1ea1i n\u1eb7ng (Cu\u00b2\u207a, Pb\u00b2\u207a) t\u1ea1o ph\u1ee9c b\u1ec1 m\u1eb7t (\u2013Zn\u2013O\u2013M) v\u1edbi nh\u00f3m \u2013OH, trong khi thu\u1ed1c nhu\u1ed9m h\u1eefu c\u01a1 li\u00ean k\u1ebft qua t\u01b0\u01a1ng t\u00e1c \u03c0-\u03c0 ho\u1eb7c li\u00ean k\u1ebft hydro, ph\u00f9 h\u1ee3p v\u1edbi m\u00f4 h\u00ecnh \u0111\u1ed9ng h\u1ecdc g\u1ea7n b\u1eadc hai;<\/p>\n

H\u1ea5p ph\u1ee5 t\u0129nh \u0111i\u1ec7n: \u0110i\u1ec7n t\u00edch b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1edfi pH, thu h\u00fat v\u00e0 h\u1ea5p ph\u1ee5 c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m d\u1ea1ng ion th\u00f4ng qua \u0111i\u1ec7n t\u00edch tr\u00e1i d\u1ea5u; v\u00ed d\u1ee5, Cr\u2082O\u2087\u00b2\u207b \u0111\u01b0\u1ee3c h\u1ea5p ph\u1ee5 trong \u0111i\u1ec1u ki\u1ec7n axit, trong khi Ni\u00b2\u207a \u0111\u01b0\u1ee3c h\u1ea5p ph\u1ee5 trong \u0111i\u1ec1u ki\u1ec7n ki\u1ec1m;<\/p>\n

H\u1ea5p ph\u1ee5 k\u1ebft h\u1ee3p quang x\u00fac t\u00e1c: C\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m h\u1eefu c\u01a1 h\u1ea5p ph\u1ee5 \u0111\u01b0\u1ee3c quang x\u00fac t\u00e1c ph\u00e2n h\u1ee7y, cho ph\u00e9p c\u00e1c v\u1ecb tr\u00ed h\u1ea5p ph\u1ee5 li\u00ean t\u1ee5c t\u00e1i t\u1ea1o, t\u1eeb \u0111\u00f3 n\u00e2ng cao kh\u1ea3 n\u0103ng h\u1ea5p ph\u1ee5 v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh chu k\u1ef3.<\/p>\n

K\u1ebdm oxit nano c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 h\u1ea5p ph\u1ee5 c\u00e1c ion kim lo\u1ea1i n\u1eb7ng. C\u00e1c kim lo\u1ea1i n\u1eb7ng nh\u01b0 Pb\u00b2\u207a, Cu\u00b2\u207a, Ni\u00b2\u207a v\u00e0 Cr\u2076\u207a trong n\u01b0\u1edbc th\u1ea3i c\u00f4ng nghi\u1ec7p (t\u1eeb xi m\u1ea1, luy\u1ec7n kim v\u00e0 \u0111i\u1ec7n t\u1eed) r\u1ea5t \u0111\u1ed9c h\u1ea1i v\u00e0 kh\u00f3 ph\u00e2n h\u1ee7y; ZnO NPs lo\u1ea1i b\u1ecf ch\u00fang hi\u1ec7u qu\u1ea3 th\u00f4ng qua ph\u1ee9c h\u1ee3p b\u1ec1 m\u1eb7t, h\u1ea5p ph\u1ee5 t\u0129nh \u0111i\u1ec7n v\u00e0 trao \u0111\u1ed5i ion. K\u1ebdm oxit nano c\u0169ng c\u00f3 th\u1ec3 \u1ee9ng d\u1ee5ng \u0111\u1ec3 h\u1ea5p ph\u1ee5 thu\u1ed1c nhu\u1ed9m h\u1eefu c\u01a1. N\u01b0\u1edbc th\u1ea3i d\u1ec7t may v\u00e0 nhu\u1ed9m ch\u1ee9a l\u01b0\u1ee3ng l\u1edbn c\u00e1c thu\u1ed1c nhu\u1ed9m azo nh\u01b0 \u0111\u1ecf Congo, xanh methylen v\u00e0 t\u00edm tinh th\u1ec3, v\u1ed1n r\u1ea5t \u0111\u1ed9c h\u1ea1i, c\u00f3 \u0111\u1ed9 m\u00e0u cao v\u00e0 kh\u00f3 ph\u00e2n h\u1ee7y sinh h\u1ecdc. ZnO NPs h\u1ea5p ph\u1ee5 c\u00e1c thu\u1ed1c nhu\u1ed9m n\u00e0y th\u00f4ng qua t\u01b0\u01a1ng t\u00e1c \u03c0-\u03c0, li\u00ean k\u1ebft hydro v\u00e0 t\u01b0\u01a1ng t\u00e1c t\u0129nh \u0111i\u1ec7n, k\u1ebft h\u1ee3p v\u1edbi ph\u00e2n h\u1ee7y quang x\u00fac t\u00e1c.<\/p>\n

L\u00e0 m\u1ed9t ch\u1ea5t h\u1ea5p ph\u1ee5 m\u1edbi v\u00e0 hi\u1ec7u qu\u1ea3 cao, k\u1ebdm oxit nano th\u1ec3 hi\u1ec7n hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i trong x\u1eed l\u00fd c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m nh\u01b0 kim lo\u1ea1i n\u1eb7ng, thu\u1ed1c nhu\u1ed9m h\u1eefu c\u01a1 v\u00e0 VOCs, nh\u1edd di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang l\u1edbn, nhi\u1ec1u v\u1ecb tr\u00ed ho\u1ea1t \u0111\u1ed9ng, \u0111i\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh v\u00e0 c\u00e1c \u01b0u \u0111i\u1ec3m hi\u1ec7p \u0111\u1ed3ng gi\u1eefa h\u1ea5p ph\u1ee5 v\u00e0 quang x\u00fac t\u00e1c. M\u1eb7c d\u00f9 v\u1eabn c\u00f2n nh\u1eefng th\u00e1ch th\u1ee9c nh\u01b0 an to\u00e0n sinh th\u00e1i v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh chu k\u1ef3, nh\u01b0ng th\u00f4ng qua t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh, bi\u1ebfn \u0111\u1ed5i h\u1ed7n h\u1ee3p v\u00e0 thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt, k\u1ebdm oxit nano \u0111\u01b0\u1ee3c k\u1ef3 v\u1ecdng s\u1ebd tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u h\u1ea5p ph\u1ee5 c\u1ed1t l\u00f5i trong l\u0129nh v\u1ef1c x\u1eed l\u00fd m\u00f4i tr\u01b0\u1eddng, cung c\u1ea5p h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt cho ki\u1ec3m so\u00e1t \u00f4 nhi\u1ec5m n\u01b0\u1edbc v\u00e0 b\u1ea3o t\u1ed3n sinh th\u00e1i.<\/p>","protected":false},"excerpt":{"rendered":"

[QWEN_MT_ITEM_1]V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng c\u1ee7a c\u00f4ng nghi\u1ec7p h\u00f3a, c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m nh\u01b0 kim lo\u1ea1i n\u1eb7ng, thu\u1ed1c nhu\u1ed9m h\u1eefu c\u01a1 v\u00e0 d\u01b0 l\u01b0\u1ee3ng thu\u1ed1c tr\u1eeb s\u00e2u trong n\u01b0\u1edbc v\u00e0 \u0111\u1ea5t ng\u00e0y c\u00e0ng tr\u1edf n\u00ean nghi\u00eam tr\u1ecdng h\u01a1n. C\u00e1c ch\u1ea5t h\u1ea5p ph\u1ee5 truy\u1ec1n th\u1ed1ng (nh\u01b0 than ho\u1ea1t t\u00ednh v\u00e0 zeolit) g\u1eb7p ph\u1ea3i nh\u1eefng v\u1ea5n \u0111\u1ec1 nh\u01b0 kh\u1ea3 n\u0103ng h\u1ea5p ph\u1ee5 th\u1ea5p, ch\u1ecdn l\u1ecdc k\u00e9m v\u00e0 kh\u00f3 t\u00e1i sinh. Do \u0111\u00f3, vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c ch\u1ea5t h\u1ea5p ph\u1ee5 m\u1edbi, hi\u1ec7u qu\u1ea3 cao, th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng, [\u2026]<\/p>","protected":false},"author":1,"featured_media":1284,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1283","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-overview"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts\/1283","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/comments?post=1283"}],"version-history":[{"count":0,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts\/1283\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/media\/1284"}],"wp:attachment":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/media?parent=1283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/categories?post=1283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/tags?post=1283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}