Physical Sciences and Mathematics Commons^™

Conversion Of Iodide To Hypoiodous Acid And Iodine In Aqueous Microdroplets Exposed To Ozone, Elizabeth A. Pillar, Marcelo I. Guzman, Jose M. Rodriguez

Chemistry Faculty Publications

Halides are incorporated into aerosol sea spray, where they start the catalytic destruction of ozone (O₃) over the oceans and affect the global troposphere. Two intriguing environmental problems undergoing continuous research are (1) to understand how reactive gas phase molecular halogens are directly produced from inorganic halides exposed to O₃ and (2) to constrain the environmental factors that control this interfacial process. This paper presents a laboratory study of the reaction of O₃ at variable iodide (I^–) concentration (0.010–100 μM) for solutions aerosolized at 25 °C, which reveal remarkable differences in the reaction intermediates …

Hydrogenation And Hydrogenolysis Of Furan Derivatives Using Bipyridine-Based Electrophilic Ruthenium(Ii) Catalysts, Anitha Shankaralinge Gowda

Theses and Dissertations--Chemistry

The catalytic activity of ruthenium(II) bis(diimine) complexes cis-[Ru(6,6′-Cl₂bpy)₂(OH₂)₂](Z)₂ (2, Z = CF₃SO₃; 3, Z = (3,5-(CF₃)₂C₆H₃)₄B ,i.e. BArF), cis-[Ru(4,4′-Cl₂bpy)₂(OH₂)₂](Z)₂ (4, Z = CF₃SO₃; 5, Z = BArF) and cis-[Ru(bpy)₂(PR₃)(OH₂)](CF₃SO₃)₂ (7, bpy = 2,2’-bipyridine, PR₃ = P(C₆H₄F)_{3 …}

Preparation, Characterization And Applications Of Functionalized Carbon Nano-Onions, Mahendra K. Sreeramoju

Theses and Dissertations--Chemistry

Carbon nano-onions (CNOs) discovered by Ugarte in 1992 are multi-layered fullerenes that are spherical analogs of multi-walled carbon nanotubes with diameters varying from 6 nm to 30 nm. Among the various methods of synthesis, CNOs prepared by graphitization of nanodiamonds (N-CNOs) and underwater electric arc of graphite rods (A-CNOs) are the subject of our research. N-CNOs are considered as more reactive than A-CNOs due to their smaller size, high curvature and surface defects.

This dissertation focuses on structural analysis and surface functionalization of N- CNOs with diameters ranging from 6—10 nm. Synthetic approaches such as oleum- assisted oxidation, Freidel-Crafts acylation …

Physicochemical Modifications And Applications Of Carbon Nano-Onions For Electrochemical Energy Storage, Rituraj Borgohain

Theses and Dissertations--Chemistry

Carbon nano-onions (CNOs), concentrically multilayered fullerenes, are prepared by several different methods. We are studying the properties of two specific CNOs: A-CNOs and N-CNOs. A-CNOs are synthesized by underwater arc discharge, and N-CNOs are synthesized by high-temperature graphitization of commercial nanodiamond. In this study the synthesis of A-CNOs are optimized by designing an arc discharge aparatus to control the arc plasma. Moreover other synthesis parameters such as arc power, duty cycles, temperature, graphitic and metal impurities are controlled for optimum production of A-CNOs. Also, a very efficient purification method is developed to screen out A-CNOs from carboneseous and metal impurities. …