Evaluation of the Oxidation of Organic Compounds by Aqueous Suspensions of Photosensitized Hydroxylated-C60 Fullerene Aggregates
Ultraviolet (UV) irradiated polyhydroxylated fullerene (fullerol) nanomaterials are examined for their potential to degrade organic compounds via reactive oxygen species (ROS) mediated by a photosensitization process. Organic compounds were selected for their sensitivity to individual species of rea...
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| Veröffentlicht in: | Environmental science & technology 2009-08, Vol.43 (16), p.6208-6213 |
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| creator | Chae, So-Ryong Hotze, Ernest M Wiesner, Mark R |
| description | Ultraviolet (UV) irradiated polyhydroxylated fullerene (fullerol) nanomaterials are examined for their potential to degrade organic compounds via reactive oxygen species (ROS) mediated by a photosensitization process. Organic compounds were selected for their sensitivity to individual species of reactive oxygen (hydroxyl radical (·OH−) for degradation of salicylic acid (SA); singlet oxygen (1O2) for degradation of 2-chlorophenol (2CP), and superoxide (O2 ·−) for oxidation of ethanol) and were monitored over time in aqueous suspensions of fullerol aggregates. Only the 2CP showed significant degradation underscoring the specificity of the fullerol in producing singlet oxygen in these conditions. Monitoring these processes via high performance liquid chromatography (HPLC) confirmed that organic compounds degraded primarily by ROS over a range of fullerol concentrations, pH values, and temperatures. |
| doi_str_mv | 10.1021/es901165q |
| format | Article |
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Sci. Technol</addtitle><description>Ultraviolet (UV) irradiated polyhydroxylated fullerene (fullerol) nanomaterials are examined for their potential to degrade organic compounds via reactive oxygen species (ROS) mediated by a photosensitization process. Organic compounds were selected for their sensitivity to individual species of reactive oxygen (hydroxyl radical (·OH−) for degradation of salicylic acid (SA); singlet oxygen (1O2) for degradation of 2-chlorophenol (2CP), and superoxide (O2 ·−) for oxidation of ethanol) and were monitored over time in aqueous suspensions of fullerol aggregates. Only the 2CP showed significant degradation underscoring the specificity of the fullerol in producing singlet oxygen in these conditions. Monitoring these processes via high performance liquid chromatography (HPLC) confirmed that organic compounds degraded primarily by ROS over a range of fullerol concentrations, pH values, and temperatures.</description><subject>Applied sciences</subject><subject>Buffers</subject><subject>Chlorophenols - chemistry</subject><subject>Diffusion - radiation effects</subject><subject>Environmental Processes</subject><subject>Exact sciences and technology</subject><subject>Fullerenes - chemistry</subject><subject>Hydrogen-Ion Concentration - radiation effects</subject><subject>Ions</subject><subject>Kinetics</subject><subject>Molecular Weight</subject><subject>Nanoparticles - chemistry</subject><subject>Organic Chemicals - chemistry</subject><subject>Oxidation-Reduction - radiation effects</subject><subject>Photosensitizing Agents - chemistry</subject><subject>Pollution</subject><subject>Solutions</subject><subject>Suspensions</subject><subject>Temperature</subject><subject>Ultraviolet Rays</subject><subject>Water - chemistry</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpF0VFr2zAQB3AxVta028O-wNDL9ub2zops-TGEdh0EUmgLezNn65y4OFYq2aXpUz96FZalTwd3P4Tuf0J8R7hASPGSQwGImX76JCaoU0i00fhZTABQJYXK_p6KsxAeASBVYL6IUyzyaZajnoi3q2fqRhpa10vXyGHNcvnS2mNj6VfUt7Wcu83Wjb0NstrJ2dPIbgzybgxb7kOkYW9v125wYd8Y2le28mZnvXvZdTSwTeYZyOux69hzz3K2WnlexUH4Kk4a6gJ_O9Rz8XB9dT-_SRbL33_ms0VCqYYhQQu6yEytG6qA6umUwRiDKiOqbGUspsWUtbFNagxhQ6iU0QzKRFsx1upc_Pr37ta7-P0wlJs21Nx11O93KbM8i5HkGOGPAxyrDdty69sN-V35P7MIfh4AhZq6xlNft-Ho0hTymHPx4agO5aMbfR_3KxHK_c3K483UO5WuiGc</recordid><startdate>20090815</startdate><enddate>20090815</enddate><creator>Chae, So-Ryong</creator><creator>Hotze, Ernest M</creator><creator>Wiesner, Mark R</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>20090815</creationdate><title>Evaluation of the Oxidation of Organic Compounds by Aqueous Suspensions of Photosensitized Hydroxylated-C60 Fullerene Aggregates</title><author>Chae, So-Ryong ; Hotze, Ernest M ; Wiesner, Mark R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a250t-1d05968c5fab0ac44e0888136aabdb8d1294e58df288a1fa13385e038ac4be1c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Applied sciences</topic><topic>Buffers</topic><topic>Chlorophenols - chemistry</topic><topic>Diffusion - radiation effects</topic><topic>Environmental Processes</topic><topic>Exact sciences and technology</topic><topic>Fullerenes - chemistry</topic><topic>Hydrogen-Ion Concentration - radiation effects</topic><topic>Ions</topic><topic>Kinetics</topic><topic>Molecular Weight</topic><topic>Nanoparticles - chemistry</topic><topic>Organic Chemicals - chemistry</topic><topic>Oxidation-Reduction - radiation effects</topic><topic>Photosensitizing Agents - chemistry</topic><topic>Pollution</topic><topic>Solutions</topic><topic>Suspensions</topic><topic>Temperature</topic><topic>Ultraviolet Rays</topic><topic>Water - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chae, So-Ryong</creatorcontrib><creatorcontrib>Hotze, Ernest M</creatorcontrib><creatorcontrib>Wiesner, Mark R</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chae, So-Ryong</au><au>Hotze, Ernest M</au><au>Wiesner, Mark R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evaluation of the Oxidation of Organic Compounds by Aqueous Suspensions of Photosensitized Hydroxylated-C60 Fullerene Aggregates</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2009-08-15</date><risdate>2009</risdate><volume>43</volume><issue>16</issue><spage>6208</spage><epage>6213</epage><pages>6208-6213</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>Ultraviolet (UV) irradiated polyhydroxylated fullerene (fullerol) nanomaterials are examined for their potential to degrade organic compounds via reactive oxygen species (ROS) mediated by a photosensitization process. Organic compounds were selected for their sensitivity to individual species of reactive oxygen (hydroxyl radical (·OH−) for degradation of salicylic acid (SA); singlet oxygen (1O2) for degradation of 2-chlorophenol (2CP), and superoxide (O2 ·−) for oxidation of ethanol) and were monitored over time in aqueous suspensions of fullerol aggregates. Only the 2CP showed significant degradation underscoring the specificity of the fullerol in producing singlet oxygen in these conditions. 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| source | MEDLINE; American Chemical Society Journals |
| subjects | Applied sciences Buffers Chlorophenols - chemistry Diffusion - radiation effects Environmental Processes Exact sciences and technology Fullerenes - chemistry Hydrogen-Ion Concentration - radiation effects Ions Kinetics Molecular Weight Nanoparticles - chemistry Organic Chemicals - chemistry Oxidation-Reduction - radiation effects Photosensitizing Agents - chemistry Pollution Solutions Suspensions Temperature Ultraviolet Rays Water - chemistry |
| title | Evaluation of the Oxidation of Organic Compounds by Aqueous Suspensions of Photosensitized Hydroxylated-C60 Fullerene Aggregates |
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