Stability of oxidized single-walled carbon nanotubes in the presence of simple electrolytes and humic acid
The attachment efficiency of O-SWCNT as a function of electrolyte concentration [(a) NaCl, (b) CaCl 2, and (c) AlCl 3] in the presence of humic acid (HA), indicating that NOM can prevent the aggregation of O-SWCNT in the presence of monovalent electrolyte but not multivalent ions [Display omitted] ►...
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| Veröffentlicht in: | Carbon (New York) 2010-12, Vol.48 (15), p.4527-4534 |
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| creator | Li, Minghua Huang, C.P. |
| description | The attachment efficiency of O-SWCNT as a function of electrolyte concentration [(a) NaCl, (b) CaCl
2, and (c) AlCl
3] in the presence of humic acid (HA), indicating that NOM can prevent the aggregation of O-SWCNT in the presence of monovalent electrolyte but not multivalent ions
[Display omitted]
► Surface oxidation significantly enhances the stability of carbon nanotubes. ► NOM prevents the aggregation of O-SWCNT induced by monovalent ions. ► NOM does not stabilize O-SWCNT when multivalent electrolytes are present. ► Surface modification and water chemistry are critical for CNT aggregation behavior. ► CNT should be readily removed by conventional wastewater treatment processes.
The stability of nanoparticles is closely related to the fate, transport, and bio-toxicity of nanomaterials in the aquatic environment. Surface treatments and the presence of natural organic matter (NOM) have significant impacts on the aggregation behavior of nanoparticles. The aggregation kinetics of oxidized single-walled carbon nanotubes (O-SWCNT) was investigated in the presence of humic acid (HA). Results indicated that O-SWCNT was relatively stable in water with a critical flocculation concentration (CFC) of 0.16, 4.2
×
10
−3 and 5.4
×
10
−5
M for NaCl, CaCl
2 and AlCl
3, respectively. The aggregation of O-SWCNT was not sensitive to pH over the range of 3–8. The presence of HA can enhanced the stability of O-SWCNT dependent on the type of electrolyte present. The CFC of NaCl increased from 0.16 in the absence of HA to 0.19, 0.23, and 0.25
M at HA concentration of 1, 5, and 20
ppm, respectively. However, the effect of HA on the aggregation of O-SWCNT was negligible in the presence of CaCl
2 and AlCl
3. The findings highlighted the importance of surface treatments, water chemistry, and the presence of NOM on the aggregation behavior of nanomaterials, which should be considered when dealing with the fate and environmental impacts of engineered nanomaterials. |
| doi_str_mv | 10.1016/j.carbon.2010.08.032 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_849472725</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0008622310006056</els_id><sourcerecordid>849472725</sourcerecordid><originalsourceid>FETCH-LOGICAL-c368t-69b25bd8bec02567c895e97626581b2de0651df42233b15f0bf861acc04228983</originalsourceid><addsrcrecordid>eNp9kE1rGzEQhkVpoK6Tf9CDLqWndfSxq9VeCsU0HxDIIclZ6GO2lpElV1q3cX99ZNb0mNMww_POzPsi9IWSFSVUXG9XVmeT4oqROiJyRTj7gBZU9rzhcqAf0YIQIhvBGP-EPpeyrW0rabtA26dJGx_8dMRpxOnVO_8PHC4-_grQ_NUh1G7ejqOOaToYKNhHPG0A7zMUiBZO0uJ3-wAYAtgpp3CcKqajw5vDzlusrXeX6GLUocDVuS7Ry83P5_Vd8_B4e7_-8dBYLuTUiMGwzjhpwBLWid7KoYOhF0x0khrmgIiOurGtXrih3UjMKAXV1pI6koPkS_Rt3rvP6fcByqR2vlgIQUdIh6JkO7Q961lXyXYmbU6lZBjVPvudzkdFiTolq7Zq9q5OySoiVU22yr6eD-hidRizjtaX_9r6F-Ftxyv3feaguv3jIati_Skv53NNSbnk3z_0BsktkUo</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>849472725</pqid></control><display><type>article</type><title>Stability of oxidized single-walled carbon nanotubes in the presence of simple electrolytes and humic acid</title><source>Elsevier ScienceDirect Journals</source><creator>Li, Minghua ; Huang, C.P.</creator><creatorcontrib>Li, Minghua ; Huang, C.P.</creatorcontrib><description>The attachment efficiency of O-SWCNT as a function of electrolyte concentration [(a) NaCl, (b) CaCl
2, and (c) AlCl
3] in the presence of humic acid (HA), indicating that NOM can prevent the aggregation of O-SWCNT in the presence of monovalent electrolyte but not multivalent ions
[Display omitted]
► Surface oxidation significantly enhances the stability of carbon nanotubes. ► NOM prevents the aggregation of O-SWCNT induced by monovalent ions. ► NOM does not stabilize O-SWCNT when multivalent electrolytes are present. ► Surface modification and water chemistry are critical for CNT aggregation behavior. ► CNT should be readily removed by conventional wastewater treatment processes.
The stability of nanoparticles is closely related to the fate, transport, and bio-toxicity of nanomaterials in the aquatic environment. Surface treatments and the presence of natural organic matter (NOM) have significant impacts on the aggregation behavior of nanoparticles. The aggregation kinetics of oxidized single-walled carbon nanotubes (O-SWCNT) was investigated in the presence of humic acid (HA). Results indicated that O-SWCNT was relatively stable in water with a critical flocculation concentration (CFC) of 0.16, 4.2
×
10
−3 and 5.4
×
10
−5
M for NaCl, CaCl
2 and AlCl
3, respectively. The aggregation of O-SWCNT was not sensitive to pH over the range of 3–8. The presence of HA can enhanced the stability of O-SWCNT dependent on the type of electrolyte present. The CFC of NaCl increased from 0.16 in the absence of HA to 0.19, 0.23, and 0.25
M at HA concentration of 1, 5, and 20
ppm, respectively. However, the effect of HA on the aggregation of O-SWCNT was negligible in the presence of CaCl
2 and AlCl
3. The findings highlighted the importance of surface treatments, water chemistry, and the presence of NOM on the aggregation behavior of nanomaterials, which should be considered when dealing with the fate and environmental impacts of engineered nanomaterials.</description><identifier>ISSN: 0008-6223</identifier><identifier>EISSN: 1873-3891</identifier><identifier>DOI: 10.1016/j.carbon.2010.08.032</identifier><identifier>CODEN: CRBNAH</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Agglomeration ; Chemistry ; Chlorofluorocarbons ; Colloidal state and disperse state ; Cross-disciplinary physics: materials science; rheology ; Electrolytes ; Exact sciences and technology ; Fullerenes and related materials; diamonds, graphite ; General and physical chemistry ; Hydroxyapatite ; Materials science ; Nanomaterials ; Nanoparticles ; Physical and chemical studies. Granulometry. Electrokinetic phenomena ; Physics ; Single wall carbon nanotubes ; Specific materials ; Stability</subject><ispartof>Carbon (New York), 2010-12, Vol.48 (15), p.4527-4534</ispartof><rights>2010 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c368t-69b25bd8bec02567c895e97626581b2de0651df42233b15f0bf861acc04228983</citedby><cites>FETCH-LOGICAL-c368t-69b25bd8bec02567c895e97626581b2de0651df42233b15f0bf861acc04228983</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0008622310006056$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23303453$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Minghua</creatorcontrib><creatorcontrib>Huang, C.P.</creatorcontrib><title>Stability of oxidized single-walled carbon nanotubes in the presence of simple electrolytes and humic acid</title><title>Carbon (New York)</title><description>The attachment efficiency of O-SWCNT as a function of electrolyte concentration [(a) NaCl, (b) CaCl
2, and (c) AlCl
3] in the presence of humic acid (HA), indicating that NOM can prevent the aggregation of O-SWCNT in the presence of monovalent electrolyte but not multivalent ions
[Display omitted]
► Surface oxidation significantly enhances the stability of carbon nanotubes. ► NOM prevents the aggregation of O-SWCNT induced by monovalent ions. ► NOM does not stabilize O-SWCNT when multivalent electrolytes are present. ► Surface modification and water chemistry are critical for CNT aggregation behavior. ► CNT should be readily removed by conventional wastewater treatment processes.
The stability of nanoparticles is closely related to the fate, transport, and bio-toxicity of nanomaterials in the aquatic environment. Surface treatments and the presence of natural organic matter (NOM) have significant impacts on the aggregation behavior of nanoparticles. The aggregation kinetics of oxidized single-walled carbon nanotubes (O-SWCNT) was investigated in the presence of humic acid (HA). Results indicated that O-SWCNT was relatively stable in water with a critical flocculation concentration (CFC) of 0.16, 4.2
×
10
−3 and 5.4
×
10
−5
M for NaCl, CaCl
2 and AlCl
3, respectively. The aggregation of O-SWCNT was not sensitive to pH over the range of 3–8. The presence of HA can enhanced the stability of O-SWCNT dependent on the type of electrolyte present. The CFC of NaCl increased from 0.16 in the absence of HA to 0.19, 0.23, and 0.25
M at HA concentration of 1, 5, and 20
ppm, respectively. However, the effect of HA on the aggregation of O-SWCNT was negligible in the presence of CaCl
2 and AlCl
3. The findings highlighted the importance of surface treatments, water chemistry, and the presence of NOM on the aggregation behavior of nanomaterials, which should be considered when dealing with the fate and environmental impacts of engineered nanomaterials.</description><subject>Agglomeration</subject><subject>Chemistry</subject><subject>Chlorofluorocarbons</subject><subject>Colloidal state and disperse state</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Electrolytes</subject><subject>Exact sciences and technology</subject><subject>Fullerenes and related materials; diamonds, graphite</subject><subject>General and physical chemistry</subject><subject>Hydroxyapatite</subject><subject>Materials science</subject><subject>Nanomaterials</subject><subject>Nanoparticles</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>Physics</subject><subject>Single wall carbon nanotubes</subject><subject>Specific materials</subject><subject>Stability</subject><issn>0008-6223</issn><issn>1873-3891</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kE1rGzEQhkVpoK6Tf9CDLqWndfSxq9VeCsU0HxDIIclZ6GO2lpElV1q3cX99ZNb0mNMww_POzPsi9IWSFSVUXG9XVmeT4oqROiJyRTj7gBZU9rzhcqAf0YIQIhvBGP-EPpeyrW0rabtA26dJGx_8dMRpxOnVO_8PHC4-_grQ_NUh1G7ejqOOaToYKNhHPG0A7zMUiBZO0uJ3-wAYAtgpp3CcKqajw5vDzlusrXeX6GLUocDVuS7Ry83P5_Vd8_B4e7_-8dBYLuTUiMGwzjhpwBLWid7KoYOhF0x0khrmgIiOurGtXrih3UjMKAXV1pI6koPkS_Rt3rvP6fcByqR2vlgIQUdIh6JkO7Q961lXyXYmbU6lZBjVPvudzkdFiTolq7Zq9q5OySoiVU22yr6eD-hidRizjtaX_9r6F-Ftxyv3feaguv3jIati_Skv53NNSbnk3z_0BsktkUo</recordid><startdate>20101201</startdate><enddate>20101201</enddate><creator>Li, Minghua</creator><creator>Huang, C.P.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20101201</creationdate><title>Stability of oxidized single-walled carbon nanotubes in the presence of simple electrolytes and humic acid</title><author>Li, Minghua ; Huang, C.P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c368t-69b25bd8bec02567c895e97626581b2de0651df42233b15f0bf861acc04228983</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Agglomeration</topic><topic>Chemistry</topic><topic>Chlorofluorocarbons</topic><topic>Colloidal state and disperse state</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Electrolytes</topic><topic>Exact sciences and technology</topic><topic>Fullerenes and related materials; diamonds, graphite</topic><topic>General and physical chemistry</topic><topic>Hydroxyapatite</topic><topic>Materials science</topic><topic>Nanomaterials</topic><topic>Nanoparticles</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>Physics</topic><topic>Single wall carbon nanotubes</topic><topic>Specific materials</topic><topic>Stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Minghua</creatorcontrib><creatorcontrib>Huang, C.P.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Carbon (New York)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Minghua</au><au>Huang, C.P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Stability of oxidized single-walled carbon nanotubes in the presence of simple electrolytes and humic acid</atitle><jtitle>Carbon (New York)</jtitle><date>2010-12-01</date><risdate>2010</risdate><volume>48</volume><issue>15</issue><spage>4527</spage><epage>4534</epage><pages>4527-4534</pages><issn>0008-6223</issn><eissn>1873-3891</eissn><coden>CRBNAH</coden><abstract>The attachment efficiency of O-SWCNT as a function of electrolyte concentration [(a) NaCl, (b) CaCl
2, and (c) AlCl
3] in the presence of humic acid (HA), indicating that NOM can prevent the aggregation of O-SWCNT in the presence of monovalent electrolyte but not multivalent ions
[Display omitted]
► Surface oxidation significantly enhances the stability of carbon nanotubes. ► NOM prevents the aggregation of O-SWCNT induced by monovalent ions. ► NOM does not stabilize O-SWCNT when multivalent electrolytes are present. ► Surface modification and water chemistry are critical for CNT aggregation behavior. ► CNT should be readily removed by conventional wastewater treatment processes.
The stability of nanoparticles is closely related to the fate, transport, and bio-toxicity of nanomaterials in the aquatic environment. Surface treatments and the presence of natural organic matter (NOM) have significant impacts on the aggregation behavior of nanoparticles. The aggregation kinetics of oxidized single-walled carbon nanotubes (O-SWCNT) was investigated in the presence of humic acid (HA). Results indicated that O-SWCNT was relatively stable in water with a critical flocculation concentration (CFC) of 0.16, 4.2
×
10
−3 and 5.4
×
10
−5
M for NaCl, CaCl
2 and AlCl
3, respectively. The aggregation of O-SWCNT was not sensitive to pH over the range of 3–8. The presence of HA can enhanced the stability of O-SWCNT dependent on the type of electrolyte present. The CFC of NaCl increased from 0.16 in the absence of HA to 0.19, 0.23, and 0.25
M at HA concentration of 1, 5, and 20
ppm, respectively. However, the effect of HA on the aggregation of O-SWCNT was negligible in the presence of CaCl
2 and AlCl
3. The findings highlighted the importance of surface treatments, water chemistry, and the presence of NOM on the aggregation behavior of nanomaterials, which should be considered when dealing with the fate and environmental impacts of engineered nanomaterials.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.carbon.2010.08.032</doi><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Carbon (New York), 2010-12, Vol.48 (15), p.4527-4534 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Agglomeration Chemistry Chlorofluorocarbons Colloidal state and disperse state Cross-disciplinary physics: materials science rheology Electrolytes Exact sciences and technology Fullerenes and related materials diamonds, graphite General and physical chemistry Hydroxyapatite Materials science Nanomaterials Nanoparticles Physical and chemical studies. Granulometry. Electrokinetic phenomena Physics Single wall carbon nanotubes Specific materials Stability |
| title | Stability of oxidized single-walled carbon nanotubes in the presence of simple electrolytes and humic acid |
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