Gamma-radiation induced formation of chromium oxide nanoparticles from dissolved dichromate
The formation of chromium oxide nanoparticles by gamma radiolysis of Cr VI (CrO 4 2− or Cr 2 O 7 2− ) solutions was investigated as a function of pH and initial Cr VI concentration by measuring [Cr VI ], the particle concentration ([Cr III (col)]) and [H 2 ], and by characterizing the particles usin...
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| Veröffentlicht in: | Physical chemistry chemical physics : PCCP 2013-01, Vol.15 (1), p.98-17 |
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| creator | Alrehaily, L. M Joseph, J. M Musa, A. Y Guzonas, D. A Wren, J. C |
| description | The formation of chromium oxide nanoparticles by gamma radiolysis of Cr
VI
(CrO
4
2−
or Cr
2
O
7
2−
) solutions was investigated as a function of pH and initial Cr
VI
concentration by measuring [Cr
VI
], the particle concentration ([Cr
III
(col)]) and [H
2
], and by characterizing the particles using TEM, Raman, FTIR and XPS. The results show that Cr
VI
is easily reduced to Cr
III
by a homogeneous aqueous reaction with &z.rad;e
aq
−
, but, due to the stability of Cr
III
colloids, the growth of the Cr(OH)
3
particles is very slow. As the particles grow the interior of the particle dehydrates to form Cr
2
O
3
while the outer layer remains hydrated. When most of the Cr
VI
that is initially present in the solution is converted to Cr(OH)
3
further redox reactions of chromium species occur on the particle surfaces. The redox system reaches a pseudo-equilibrium state due to cyclic reactions of Cr
III
with &z.rad;OH and H
2
O
2
, and reactions of Cr
VI
with &z.rad;e
aq
−
and H
2
O
2
. The size distribution of the particles that are formed is controlled by these solution-solid interface reactions.
The kinetics of chromium oxide formation by γ-radiolysis of initially dissolved Cr
VI
were investigated. The results show that Cr
VI
is easily reduced to Cr
III
by homogeneous aqueous reaction with &z.rad;e
aq
−
, but the growth of the Cr(OH)
3
particles is very slow. As the particles grow the interior of the particle dehydrates to form Cr
2
O
3
while the outer layer remains hydrated. |
| doi_str_mv | 10.1039/c2cp43150e |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pasca</sourceid><recordid>TN_cdi_pascalfrancis_primary_27158458</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1283715948</sourcerecordid><originalsourceid>FETCH-LOGICAL-c365t-8a7c0aa45e767b1dddeb73ba702bb4002bff1e21c7e31754961d8de9c4d113e63</originalsourceid><addsrcrecordid>eNp90TFP3TAQB3ALFQGlLOygMCBVSKG-2ImTET29UiSkdqBTh-hin1VXSZzaSQXfHsN7fWwstuX7-Sz_zdgp8GvgovmiCz1JASWnPXYEshJ5w2v5YbdW1SH7GOMfzjmUIA7YYSFAKgXlEft1i8OAeUDjcHZ-zNxoFk0msz4Mmx1vM_07-MEtQ-YfnaFsxNFPGGane4qZTbXMuBh9_y8dNO5V40yf2L7FPtLJdj5mP7-uH1bf8vvvt3erm_tci6qc8xqV5oiyJFWpDowx1CnRoeJF10meRmuBCtCKBKhSNhWY2lCjpQEQVIlj9nnTdwr-70JxbgcXNfU9juSX2EJRi_TYRtaJXm2oDj7GQLadghswPLXA25cw21Wx-vEa5jrh823fpRvI7Oj_9BK43AKMGnsbcNQuvrlkalm-3HqxcSHqXfXt19rJ2GTO3jPiGbKNku4</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1283715948</pqid></control><display><type>article</type><title>Gamma-radiation induced formation of chromium oxide nanoparticles from dissolved dichromate</title><source>Royal Society Of Chemistry Journals</source><source>Alma/SFX Local Collection</source><creator>Alrehaily, L. M ; Joseph, J. M ; Musa, A. Y ; Guzonas, D. A ; Wren, J. C</creator><creatorcontrib>Alrehaily, L. M ; Joseph, J. M ; Musa, A. Y ; Guzonas, D. A ; Wren, J. C</creatorcontrib><description>The formation of chromium oxide nanoparticles by gamma radiolysis of Cr
VI
(CrO
4
2−
or Cr
2
O
7
2−
) solutions was investigated as a function of pH and initial Cr
VI
concentration by measuring [Cr
VI
], the particle concentration ([Cr
III
(col)]) and [H
2
], and by characterizing the particles using TEM, Raman, FTIR and XPS. The results show that Cr
VI
is easily reduced to Cr
III
by a homogeneous aqueous reaction with &z.rad;e
aq
−
, but, due to the stability of Cr
III
colloids, the growth of the Cr(OH)
3
particles is very slow. As the particles grow the interior of the particle dehydrates to form Cr
2
O
3
while the outer layer remains hydrated. When most of the Cr
VI
that is initially present in the solution is converted to Cr(OH)
3
further redox reactions of chromium species occur on the particle surfaces. The redox system reaches a pseudo-equilibrium state due to cyclic reactions of Cr
III
with &z.rad;OH and H
2
O
2
, and reactions of Cr
VI
with &z.rad;e
aq
−
and H
2
O
2
. The size distribution of the particles that are formed is controlled by these solution-solid interface reactions.
The kinetics of chromium oxide formation by γ-radiolysis of initially dissolved Cr
VI
were investigated. The results show that Cr
VI
is easily reduced to Cr
III
by homogeneous aqueous reaction with &z.rad;e
aq
−
, but the growth of the Cr(OH)
3
particles is very slow. As the particles grow the interior of the particle dehydrates to form Cr
2
O
3
while the outer layer remains hydrated.</description><identifier>ISSN: 1463-9076</identifier><identifier>EISSN: 1463-9084</identifier><identifier>DOI: 10.1039/c2cp43150e</identifier><identifier>PMID: 23147715</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Chemistry ; Chromium ; Chromium oxides ; Colloidal state and disperse state ; Exact sciences and technology ; General and physical chemistry ; Interface reactions ; Nanoparticles ; Particle size distribution ; Physical and chemical studies. Granulometry. Electrokinetic phenomena ; Physical chemistry of induced reactions (with radiations, particles and ultrasonics) ; Radiation chemistry ; Radiolysis ; Transmission electron microscopy ; X-ray photoelectron spectroscopy</subject><ispartof>Physical chemistry chemical physics : PCCP, 2013-01, Vol.15 (1), p.98-17</ispartof><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c365t-8a7c0aa45e767b1dddeb73ba702bb4002bff1e21c7e31754961d8de9c4d113e63</citedby><cites>FETCH-LOGICAL-c365t-8a7c0aa45e767b1dddeb73ba702bb4002bff1e21c7e31754961d8de9c4d113e63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27158458$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23147715$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Alrehaily, L. M</creatorcontrib><creatorcontrib>Joseph, J. M</creatorcontrib><creatorcontrib>Musa, A. Y</creatorcontrib><creatorcontrib>Guzonas, D. A</creatorcontrib><creatorcontrib>Wren, J. C</creatorcontrib><title>Gamma-radiation induced formation of chromium oxide nanoparticles from dissolved dichromate</title><title>Physical chemistry chemical physics : PCCP</title><addtitle>Phys Chem Chem Phys</addtitle><description>The formation of chromium oxide nanoparticles by gamma radiolysis of Cr
VI
(CrO
4
2−
or Cr
2
O
7
2−
) solutions was investigated as a function of pH and initial Cr
VI
concentration by measuring [Cr
VI
], the particle concentration ([Cr
III
(col)]) and [H
2
], and by characterizing the particles using TEM, Raman, FTIR and XPS. The results show that Cr
VI
is easily reduced to Cr
III
by a homogeneous aqueous reaction with &z.rad;e
aq
−
, but, due to the stability of Cr
III
colloids, the growth of the Cr(OH)
3
particles is very slow. As the particles grow the interior of the particle dehydrates to form Cr
2
O
3
while the outer layer remains hydrated. When most of the Cr
VI
that is initially present in the solution is converted to Cr(OH)
3
further redox reactions of chromium species occur on the particle surfaces. The redox system reaches a pseudo-equilibrium state due to cyclic reactions of Cr
III
with &z.rad;OH and H
2
O
2
, and reactions of Cr
VI
with &z.rad;e
aq
−
and H
2
O
2
. The size distribution of the particles that are formed is controlled by these solution-solid interface reactions.
The kinetics of chromium oxide formation by γ-radiolysis of initially dissolved Cr
VI
were investigated. The results show that Cr
VI
is easily reduced to Cr
III
by homogeneous aqueous reaction with &z.rad;e
aq
−
, but the growth of the Cr(OH)
3
particles is very slow. As the particles grow the interior of the particle dehydrates to form Cr
2
O
3
while the outer layer remains hydrated.</description><subject>Chemistry</subject><subject>Chromium</subject><subject>Chromium oxides</subject><subject>Colloidal state and disperse state</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Interface reactions</subject><subject>Nanoparticles</subject><subject>Particle size distribution</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</subject><subject>Radiation chemistry</subject><subject>Radiolysis</subject><subject>Transmission electron microscopy</subject><subject>X-ray photoelectron spectroscopy</subject><issn>1463-9076</issn><issn>1463-9084</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNp90TFP3TAQB3ALFQGlLOygMCBVSKG-2ImTET29UiSkdqBTh-hin1VXSZzaSQXfHsN7fWwstuX7-Sz_zdgp8GvgovmiCz1JASWnPXYEshJ5w2v5YbdW1SH7GOMfzjmUIA7YYSFAKgXlEft1i8OAeUDjcHZ-zNxoFk0msz4Mmx1vM_07-MEtQ-YfnaFsxNFPGGane4qZTbXMuBh9_y8dNO5V40yf2L7FPtLJdj5mP7-uH1bf8vvvt3erm_tci6qc8xqV5oiyJFWpDowx1CnRoeJF10meRmuBCtCKBKhSNhWY2lCjpQEQVIlj9nnTdwr-70JxbgcXNfU9juSX2EJRi_TYRtaJXm2oDj7GQLadghswPLXA25cw21Wx-vEa5jrh823fpRvI7Oj_9BK43AKMGnsbcNQuvrlkalm-3HqxcSHqXfXt19rJ2GTO3jPiGbKNku4</recordid><startdate>20130107</startdate><enddate>20130107</enddate><creator>Alrehaily, L. M</creator><creator>Joseph, J. M</creator><creator>Musa, A. Y</creator><creator>Guzonas, D. A</creator><creator>Wren, J. C</creator><general>Royal Society of Chemistry</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20130107</creationdate><title>Gamma-radiation induced formation of chromium oxide nanoparticles from dissolved dichromate</title><author>Alrehaily, L. M ; Joseph, J. M ; Musa, A. Y ; Guzonas, D. A ; Wren, J. C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c365t-8a7c0aa45e767b1dddeb73ba702bb4002bff1e21c7e31754961d8de9c4d113e63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Chemistry</topic><topic>Chromium</topic><topic>Chromium oxides</topic><topic>Colloidal state and disperse state</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Interface reactions</topic><topic>Nanoparticles</topic><topic>Particle size distribution</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</topic><topic>Radiation chemistry</topic><topic>Radiolysis</topic><topic>Transmission electron microscopy</topic><topic>X-ray photoelectron spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Alrehaily, L. M</creatorcontrib><creatorcontrib>Joseph, J. M</creatorcontrib><creatorcontrib>Musa, A. Y</creatorcontrib><creatorcontrib>Guzonas, D. A</creatorcontrib><creatorcontrib>Wren, J. C</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical chemistry chemical physics : PCCP</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Alrehaily, L. M</au><au>Joseph, J. M</au><au>Musa, A. Y</au><au>Guzonas, D. A</au><au>Wren, J. C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Gamma-radiation induced formation of chromium oxide nanoparticles from dissolved dichromate</atitle><jtitle>Physical chemistry chemical physics : PCCP</jtitle><addtitle>Phys Chem Chem Phys</addtitle><date>2013-01-07</date><risdate>2013</risdate><volume>15</volume><issue>1</issue><spage>98</spage><epage>17</epage><pages>98-17</pages><issn>1463-9076</issn><eissn>1463-9084</eissn><abstract>The formation of chromium oxide nanoparticles by gamma radiolysis of Cr
VI
(CrO
4
2−
or Cr
2
O
7
2−
) solutions was investigated as a function of pH and initial Cr
VI
concentration by measuring [Cr
VI
], the particle concentration ([Cr
III
(col)]) and [H
2
], and by characterizing the particles using TEM, Raman, FTIR and XPS. The results show that Cr
VI
is easily reduced to Cr
III
by a homogeneous aqueous reaction with &z.rad;e
aq
−
, but, due to the stability of Cr
III
colloids, the growth of the Cr(OH)
3
particles is very slow. As the particles grow the interior of the particle dehydrates to form Cr
2
O
3
while the outer layer remains hydrated. When most of the Cr
VI
that is initially present in the solution is converted to Cr(OH)
3
further redox reactions of chromium species occur on the particle surfaces. The redox system reaches a pseudo-equilibrium state due to cyclic reactions of Cr
III
with &z.rad;OH and H
2
O
2
, and reactions of Cr
VI
with &z.rad;e
aq
−
and H
2
O
2
. The size distribution of the particles that are formed is controlled by these solution-solid interface reactions.
The kinetics of chromium oxide formation by γ-radiolysis of initially dissolved Cr
VI
were investigated. The results show that Cr
VI
is easily reduced to Cr
III
by homogeneous aqueous reaction with &z.rad;e
aq
−
, but the growth of the Cr(OH)
3
particles is very slow. As the particles grow the interior of the particle dehydrates to form Cr
2
O
3
while the outer layer remains hydrated.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><pmid>23147715</pmid><doi>10.1039/c2cp43150e</doi><tpages>1</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1463-9076 |
| ispartof | Physical chemistry chemical physics : PCCP, 2013-01, Vol.15 (1), p.98-17 |
| issn | 1463-9076 1463-9084 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_27158458 |
| source | Royal Society Of Chemistry Journals; Alma/SFX Local Collection |
| subjects | Chemistry Chromium Chromium oxides Colloidal state and disperse state Exact sciences and technology General and physical chemistry Interface reactions Nanoparticles Particle size distribution Physical and chemical studies. Granulometry. Electrokinetic phenomena Physical chemistry of induced reactions (with radiations, particles and ultrasonics) Radiation chemistry Radiolysis Transmission electron microscopy X-ray photoelectron spectroscopy |
| title | Gamma-radiation induced formation of chromium oxide nanoparticles from dissolved dichromate |
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