Physical Sciences and Mathematics Commons^™

Separation Of Nitrito- And Nitropentamminecobalt (Iii) Chloride By High Performance Liquid Chromatography, Tisha Hutchinson

Seton Hall University Dissertations and Theses (ETDs)

Reversed phase high performance liquid chromatography, chosen because of its ability to collect many data points over a long period of time with minimal involvement, was used to separate pentaamminenitritocobalt(III) chloride and pentaamminenitrocobalt(III) chloride. Pentaamminenitritocobalt(III) chloride was prepared, made into a concentrated solution, divided into aliquots and allowed to isomerize to pentaamminenitrocobalt(III) chloride over a period of twelve to eighteen hours. An injection was made approximately every forty-five minutes. The samples were analyzed at three wavelengths, 254 nm, 460 nm and 490 nm. The absorbance was collected and was used to determine the kinetics of the reaction.

The isomerization from …

Epoxy Siloxane Self-Cleaning Coating Using F64pczn/Tio2 Photocatalyst Composite, James F. Sullivan

Seton Hall University Dissertations and Theses (ETDs)

A new photocatalytic composite powder incorporated into a siloxane epoxy polymer has been shown to yield a highly efficient self-cleaning coating. The composite, which makes greater use of light in the visible/near-infrared (NIR) region, was prepared by coating a nano-particle photocatalytic TiO₂ with 3% w/w of F₆₄PcZn photosensitizer resulting in a dark green powder. The F₆₄PcZn/P25 TiO₂ composite exhibited a greater photo-induced degradation of methyl red, a model surface contaminant, compared to traditional nano-particle photocatalytic TiO₂. Singlet oxygen (¹Δ_g ¹O₂), generated form the F₆₄PcZn, …