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Farinmade A, Ajumobi O, Yu L, Su Y, Zhang Y, Lou Y, Valla JA, John VT. Tubular Clay Nano-Straws in Ordered Mesoporous Particles Create Hierarchical Porosities Leading to Improved CO2 Uptake. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Azeem Farinmade
- Department of Chemical & Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States
| | - Oluwole Ajumobi
- Department of Chemical & Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States
| | - Lei Yu
- Department of Chemical & Biomolecular Engineering, University of Connecticut, 191 Auditorium Road, Unit 3222, Storrs, Connecticut 06269, United States
| | - Yang Su
- Department of Chemical & Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States
| | - Yueheng Zhang
- Department of Chemical & Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States
| | - Yueyun Lou
- Department of Chemical & Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States
| | - Julia A. Valla
- Department of Chemical & Biomolecular Engineering, University of Connecticut, 191 Auditorium Road, Unit 3222, Storrs, Connecticut 06269, United States
| | - Vijay T. John
- Department of Chemical & Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States
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Miller PJ, Shantz DF. Covalently functionalized uniform amino-silica nanoparticles. Synthesis and validation of amine group accessibility and stability. NANOSCALE ADVANCES 2020; 2:860-868. [PMID: 36133245 PMCID: PMC9417799 DOI: 10.1039/c9na00772e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 01/15/2020] [Indexed: 06/16/2023]
Abstract
This paper describes the synthesis and characterization of colloidally stable, 18 nm silica nanoparticles that are functionalized with amine groups. Electron microscopy, small-angle X-ray scattering (SAXS), and dynamic light scattering show the amine grafting does not impact particle size. SAXS and DLS confirm the particles do not aggregate at 10 mg mL-1 and pH 2 for 30 days. Ninhydrin analysis, fluorescamine binding, and NMR studies of carboxylic acid binding show that the amines are present on the surface and accessible with maximum loading calculated to be 0.14 mmol g-1. These materials should find a range of use in nanotechnology applications.
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Affiliation(s)
- Peter J Miller
- Department of Chemical and Biomolecular Engineering, Tulane University 6823 St. Charles Avenue New Orleans LA 70118 USA
| | - Daniel F Shantz
- Department of Chemical and Biomolecular Engineering, Tulane University 6823 St. Charles Avenue New Orleans LA 70118 USA
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Lou Y, Shantz DF. Palladium-Containing and Metal-Free Supported Dendrons As Catalysts in Multistep Conversion of Oxygenates to Fuels. ChemCatChem 2019. [DOI: 10.1002/cctc.201801584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yueyun Lou
- Department of Chemical and Biomolecular Engineering; Tulane University; 6823 St. Charles Avenue New Orleans LA-70118 USA
| | - Daniel F. Shantz
- Department of Chemical and Biomolecular Engineering; Tulane University; 6823 St. Charles Avenue New Orleans LA-70118 USA
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