Kinetics and Mechanism of Methylene Blue Adsorption by a TiO2/Diatomite Nanocomposite and Its Components
A study was made of the kinetics of the adsorption of the methylene blue dye from an aqueous solution on the photocatalyst DDT (nanosized titanium dioxide in the anatase phase, deposited on diatomite) and its components: diatomite D and anatase TiO 2 . The effect of the initial concentration and pH...
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| Veröffentlicht in: | Surface engineering and applied electrochemistry 2023-12, Vol.59 (6), p.772-779 |
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| creator | Datsko, T. Ya Zelentsov, V. I. |
| description | A study was made of the kinetics of the adsorption of the methylene blue dye from an aqueous solution on the photocatalyst DDT (nanosized titanium dioxide in the anatase phase, deposited on diatomite) and its components: diatomite D and anatase TiO
2
. The effect of the initial concentration and pH of the methylene blue solution on the rate of the adsorption process was investigated. The kinetic data of adsorption were processed using two simplified kinetic models, one of the pseudo-first-order and the other of pseudo-second-order. To investigate the adsorption mechanism, a model of intraparticle diffusion kinetics was employed. The adsorption kinetics of methylene blue on the surfaces of D, TiO
2
, and DDT was found to be best described by the pseudo-second-order model. It was shown that the adsorption of methylene blue on the D and DDT adsorbents is a multistep process involving adsorption on the external surface and inside particles, with the limiting step being a chemical reaction. For the adsorption on TiO
2
, the limiting step is the external diffusion. |
| doi_str_mv | 10.3103/S1068375523060078 |
| format | Article |
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2
. The effect of the initial concentration and pH of the methylene blue solution on the rate of the adsorption process was investigated. The kinetic data of adsorption were processed using two simplified kinetic models, one of the pseudo-first-order and the other of pseudo-second-order. To investigate the adsorption mechanism, a model of intraparticle diffusion kinetics was employed. The adsorption kinetics of methylene blue on the surfaces of D, TiO
2
, and DDT was found to be best described by the pseudo-second-order model. It was shown that the adsorption of methylene blue on the D and DDT adsorbents is a multistep process involving adsorption on the external surface and inside particles, with the limiting step being a chemical reaction. For the adsorption on TiO
2
, the limiting step is the external diffusion.</description><identifier>ISSN: 1068-3755</identifier><identifier>EISSN: 1934-8002</identifier><identifier>DOI: 10.3103/S1068375523060078</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Adsorption ; Anatase ; Aqueous solutions ; Chemical reactions ; Constraining ; Diatomaceous earth ; Diffusion ; Engineering ; Kinetics ; Machines ; Manufacturing ; Methylene blue ; Nanocomposites ; Processes ; Surface chemistry ; Titanium dioxide</subject><ispartof>Surface engineering and applied electrochemistry, 2023-12, Vol.59 (6), p.772-779</ispartof><rights>Allerton Press, Inc. 2023. ISSN 1068-3755, Surface Engineering and Applied Electrochemistry, 2023, Vol. 59, No. 6, pp. 772–779. © Allerton Press, Inc., 2023. Russian Text © The Author(s), 2023, published in Elektronnaya Obrabotka Materialov, 2023, No. 3, pp. 46–54.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c268t-e394481bb6054a01a25adcce32205639197a6dba463859cf10066f0b08aadf5e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.3103/S1068375523060078$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.3103/S1068375523060078$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Datsko, T. Ya</creatorcontrib><creatorcontrib>Zelentsov, V. I.</creatorcontrib><title>Kinetics and Mechanism of Methylene Blue Adsorption by a TiO2/Diatomite Nanocomposite and Its Components</title><title>Surface engineering and applied electrochemistry</title><addtitle>Surf. Engin. Appl.Electrochem</addtitle><description>A study was made of the kinetics of the adsorption of the methylene blue dye from an aqueous solution on the photocatalyst DDT (nanosized titanium dioxide in the anatase phase, deposited on diatomite) and its components: diatomite D and anatase TiO
2
. The effect of the initial concentration and pH of the methylene blue solution on the rate of the adsorption process was investigated. The kinetic data of adsorption were processed using two simplified kinetic models, one of the pseudo-first-order and the other of pseudo-second-order. To investigate the adsorption mechanism, a model of intraparticle diffusion kinetics was employed. The adsorption kinetics of methylene blue on the surfaces of D, TiO
2
, and DDT was found to be best described by the pseudo-second-order model. It was shown that the adsorption of methylene blue on the D and DDT adsorbents is a multistep process involving adsorption on the external surface and inside particles, with the limiting step being a chemical reaction. For the adsorption on TiO
2
, the limiting step is the external diffusion.</description><subject>Adsorption</subject><subject>Anatase</subject><subject>Aqueous solutions</subject><subject>Chemical reactions</subject><subject>Constraining</subject><subject>Diatomaceous earth</subject><subject>Diffusion</subject><subject>Engineering</subject><subject>Kinetics</subject><subject>Machines</subject><subject>Manufacturing</subject><subject>Methylene blue</subject><subject>Nanocomposites</subject><subject>Processes</subject><subject>Surface chemistry</subject><subject>Titanium dioxide</subject><issn>1068-3755</issn><issn>1934-8002</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp1ULtOwzAUtRBIlMIHsFliDr22E9cZS3lVFDpQ5shxHOqqsYPtDv17HBWJATHdx3ncq4PQNYFbRoBN3glwwaZFQRlwgKk4QSNSsjwTAPQ09QnOBvwcXYSwBSg4LegIbV6M1dGogKVt8KtWG2lN6LBr0xA3h522Gt_t9hrPmuB8H42zuD5giddmRSf3RkbXmajxm7ROua53YZgGs0UMeD5srLYxXKKzVu6CvvqpY_Tx-LCeP2fL1dNiPltminIRM83KPBekrjkUuQQiaSEbpTSjNL3MSlJOJW9qmXMmilK1BIDzFmoQUjZtodkY3Rx9e---9jrEauv23qaTFS0hRcJywRKLHFnKuxC8bqvem076Q0WgGgKt_gSaNPSoCYlrP7X_df5f9A1m_Hbn</recordid><startdate>20231201</startdate><enddate>20231201</enddate><creator>Datsko, T. Ya</creator><creator>Zelentsov, V. I.</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20231201</creationdate><title>Kinetics and Mechanism of Methylene Blue Adsorption by a TiO2/Diatomite Nanocomposite and Its Components</title><author>Datsko, T. Ya ; Zelentsov, V. I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c268t-e394481bb6054a01a25adcce32205639197a6dba463859cf10066f0b08aadf5e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Adsorption</topic><topic>Anatase</topic><topic>Aqueous solutions</topic><topic>Chemical reactions</topic><topic>Constraining</topic><topic>Diatomaceous earth</topic><topic>Diffusion</topic><topic>Engineering</topic><topic>Kinetics</topic><topic>Machines</topic><topic>Manufacturing</topic><topic>Methylene blue</topic><topic>Nanocomposites</topic><topic>Processes</topic><topic>Surface chemistry</topic><topic>Titanium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Datsko, T. Ya</creatorcontrib><creatorcontrib>Zelentsov, V. I.</creatorcontrib><collection>CrossRef</collection><jtitle>Surface engineering and applied electrochemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Datsko, T. Ya</au><au>Zelentsov, V. I.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Kinetics and Mechanism of Methylene Blue Adsorption by a TiO2/Diatomite Nanocomposite and Its Components</atitle><jtitle>Surface engineering and applied electrochemistry</jtitle><stitle>Surf. Engin. Appl.Electrochem</stitle><date>2023-12-01</date><risdate>2023</risdate><volume>59</volume><issue>6</issue><spage>772</spage><epage>779</epage><pages>772-779</pages><issn>1068-3755</issn><eissn>1934-8002</eissn><abstract>A study was made of the kinetics of the adsorption of the methylene blue dye from an aqueous solution on the photocatalyst DDT (nanosized titanium dioxide in the anatase phase, deposited on diatomite) and its components: diatomite D and anatase TiO
2
. The effect of the initial concentration and pH of the methylene blue solution on the rate of the adsorption process was investigated. The kinetic data of adsorption were processed using two simplified kinetic models, one of the pseudo-first-order and the other of pseudo-second-order. To investigate the adsorption mechanism, a model of intraparticle diffusion kinetics was employed. The adsorption kinetics of methylene blue on the surfaces of D, TiO
2
, and DDT was found to be best described by the pseudo-second-order model. It was shown that the adsorption of methylene blue on the D and DDT adsorbents is a multistep process involving adsorption on the external surface and inside particles, with the limiting step being a chemical reaction. For the adsorption on TiO
2
, the limiting step is the external diffusion.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.3103/S1068375523060078</doi><tpages>8</tpages></addata></record> |
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| subjects | Adsorption Anatase Aqueous solutions Chemical reactions Constraining Diatomaceous earth Diffusion Engineering Kinetics Machines Manufacturing Methylene blue Nanocomposites Processes Surface chemistry Titanium dioxide |
| title | Kinetics and Mechanism of Methylene Blue Adsorption by a TiO2/Diatomite Nanocomposite and Its Components |
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