Nanomaterials

chromatography

electrochemical sensing

porous materials

sol-gel chemistry

Education

• Postdoctoral, Analytical Chemistry, University of North Carolina, Chapel Hill, 1992-1994
• Ph.D., Analytical Chemistry, North Carolina State University, 1992
• B.S., Chemistry, University of Central Florida, 1987
• B.S., Forensic Science, University of Central Florida, 1987

Research Interests

Research in the Collinson group spans the traditional disciplines of analytical, inorganic and materials chemistry and incorporates various aspects of nanoscience and nanotechnology. During the past few years, our research has been directed toward the design, fabrication and characterization of two classes of materials:

• High surface area nanoporous materials for electrochemical analysis and biomedical applications; such materials include metal-silica alloys and binary and ternary metal alloys
• Stationary phase gradients for chromatography; such gradient materials include those formed on TLC plates and packed LC columns.

We fabricate these materials using different techniques including:

• Sol-gel chemistry
• Templating (imprinting)
• Electrodeposition
• Hierarchical nanostructuring
• Dealloying
• Silane chemistry

Common instrumental methods routinely used in our work include:

• Atomic force microscopy (AFM)
• Scanning electron microscopy (SEM)
• FTIR microspectroscopy
• Raman microscopy
• X-ray photoelectron microscopy (XPS)
• Fluorescence spectroscopy
• Electrochemistry (potentiometry, cyclic voltammetry)
• Thermogravimetric analysis
• Ellipsometry
• Surface profilometry

Select Publications

Preparation and characterization of stationary phase gradients on C8 liquid chromatography columns, Thomas Cecil, Judith Bautista, Maryanne M. Collinson, Sarah C. Rutan, Journal of Chromatography A, Volume 1727, 2024, 464974, doi.org/10.1016/j.chroma.2024.464974.

Recent Advances in Bimetallic Nanoporous Gold Electrodes for Electrochemical Sensing. Md. Islam, S. Banik, M.M Collinson, Nanomaterials 2023, 13(18), 2515; 37 pages. https://doi.org/10.3390/nano13182515

Improved Sensitivity and Selectivity for the Redox Potentiometric Measurement of Biological Redox Molecules Using Nafion-Coated Platinum Decorated Nanoporous Gold Electrodes. Md. Shafiul Islam and Maryanne. M. Collinson, Journal of the Electrochemical Society, 2022, 169 (5), 057503.

Nanoporous Pt(Au) Alloys for the Enhanced, Non‐enzymatic Detection of Hydrogen Peroxide under Biofouling Conditions. Rezaul K. Khan, Tiago A. Silva, Orlando Fatibello‐Filho, Maryanne M. Collinson, Ahmed A. Farghaly, Electroanalysis, 2022, DOI: 10.1002/elan.202100568

Stationary Phase Gradients in Liquid Chromatography. Shelby L. Weatherbee and Maryanne M. Collinson. Book Chapter for Advances in Chromatography; Nelu Grinberg and Peter W Carr, editors, CRC Press, 2021, p. 75-120.

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Affiliations

• Society for Electroanalytical Chemistry

Awards

• University Distinguished Scholarship Award, VCU, 2020
• Distinguished Research Award of the Virginia Section of the American Chemical Society, 2017
• College of Humanities and Sciences (VCU) Distinguished Scholar Award, 2010
• NSF CAREER Award recipient, 1996