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Pham-Truong TN, Ranjan C, Randriamahazaka H, Ghilane J. Nitrogen doped carbon dots embedded in poly(ionic liquid) as high efficient metal-free electrocatalyst for oxygen reduction reaction. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.12.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Jalilov AS, Zhang C, Samuel EG, Sikkema WKA, Wu G, Berka V, Kent TA, Tsai AL, Tour JM. Mechanistic Study of the Conversion of Superoxide to Oxygen and Hydrogen Peroxide in Carbon Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2016; 8:15086-92. [PMID: 27245481 PMCID: PMC4920082 DOI: 10.1021/acsami.6b03502] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Hydrophilic carbon clusters (HCCs) are oxidized carbon nanoparticles with a high affinity for electrons. The electron accepting strength of HCCs, employing the efficient conversion of superoxide (O2(•-)) to molecular oxygen (O2) via single-electron oxidation, was monitored using cyclic voltammetry and electron paramagnetic resonance spectroscopy. We found that HCCs possess O2 reduction reaction (ORR) capabilities through a two-electron process with the formation of H2O2. By comparing results from aprotic solvents to those obtained from ORR activity in aqueous media, we propose a mechanism for the origin of the antioxidant and superoxide dismutase mimetic properties of poly(ethylene glycolated) hydrophilic carbon clusters (PEG-HCCs).
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Affiliation(s)
- Almaz S. Jalilov
- Department of Chemistry, The NanoCarbon Center, and Department of
Materials Science and NanoEngineering, Rice
University, 6100 Main
Street, Houston, Texas 77005, United States
| | - Chenhao Zhang
- Department of Chemistry, The NanoCarbon Center, and Department of
Materials Science and NanoEngineering, Rice
University, 6100 Main
Street, Houston, Texas 77005, United States
| | - Errol
L. G. Samuel
- Department of Chemistry, The NanoCarbon Center, and Department of
Materials Science and NanoEngineering, Rice
University, 6100 Main
Street, Houston, Texas 77005, United States
| | - William K. A. Sikkema
- Department of Chemistry, The NanoCarbon Center, and Department of
Materials Science and NanoEngineering, Rice
University, 6100 Main
Street, Houston, Texas 77005, United States
| | - Gang Wu
- Hematology, Department
of Internal Medicine, University of Texas
Houston Medical School, Houston, Texas 77030, United States
| | - Vladimir Berka
- Hematology, Department
of Internal Medicine, University of Texas
Houston Medical School, Houston, Texas 77030, United States
| | - Thomas A. Kent
- Center for Translational Research on Inflammatory Diseases,
Michael E. DeBakey VA Medical Center, and Department of Neurology, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Ah-Lim Tsai
- Hematology, Department
of Internal Medicine, University of Texas
Houston Medical School, Houston, Texas 77030, United States
- E-mail:
| | - James M. Tour
- Department of Chemistry, The NanoCarbon Center, and Department of
Materials Science and NanoEngineering, Rice
University, 6100 Main
Street, Houston, Texas 77005, United States
- E-mail:
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Schulz T, Ahrens S, Meyer D, Allolio C, Peritz A, Strassner T. Electronic Effects of para-Substitution on the Melting Points of TAAILs. Chem Asian J 2011; 6:863-7. [DOI: 10.1002/asia.201000744] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Indexed: 11/11/2022]
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Electrochemical polymerization of nano-micro sheaf/wire conducting polymer poly[Ni(salen)] for electrochemical energy storage system. CHINESE JOURNAL OF POLYMER SCIENCE 2010. [DOI: 10.1007/s10118-010-0083-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ding K. Preparation and characterization of MnO2/MWCNTs-modified graphite electrode and its catalysis for oxygen reduction reaction (ORR). RUSS J ELECTROCHEM+ 2010. [DOI: 10.1134/s1023193510040117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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