Highly oxygenated fullerene anions C60On− formed by corona discharge ionization in the gas phase

Direct observation of C60− nano-ion gas phase ozonation via ion mobility-mass spectrometry

Atmospheric pressure differential mobility analysis-mass spectrometry facilitates determination of nano-ion-neutral reaction rates approaching the collision controlled limit.

Structural and electron properties of the highest epoxygenated fullerene C60O30, a DFT study

Ab initio Hartree-Fock (HF) and density functional theory (DFT) calculations were carried out to determine the structural and electronic properties of the highest epoxygenated fullerenes C(60)O(30). For comparison, other fullerene oxides C(60)O(29), C(60)O(3), C(60)O(2) and C(60)O were also studied. The highly symmetrical I(h) structure of the parent C(60) is reserved in C(60)O(30) and C(60)O(30) was calculated to be a nonpolar molecule. It was demonstrated that C(60)O(30) should be more stable than other C(60) oxides such as C(60)O(29), C(60)O(3), C(60)O(2) and C(60)O. Compared with C(60), it is less possible for C(60)O(30) to accept or donate electrons from the reduced EAs and enhanced IPs. The IR active modes and harmonic vibrational frequencies of C(60)O(30) were also discussed.

Modeling of experimental treatment of acetaldehyde-laden air and phenol-containing water using corona discharge technique

Acetaldehyde-laden air and phenol-contaminated water were experimentally treated using corona discharge reactions and gas absorption in a single water-film column. Mathematical modeling of the combined treatment was developed in this work. Efficient removal of the gaseous acetaldehyde was achieved while the corona discharge reactions produced short-lived species such as O and O- as well as ozone. Direct contact of the radicals and ions with water was known to produce aqueous OH radical, which contributes to the decomposition of organic contaminants: phenol, absorbed acetaldehyde, and intermediate byproducts in the water. The influence of initial phenol concentration ranging from 15 to 50 mg L(-1) and that of influent acetaldehyde ranging from 0 to 200 ppm were experimentally investigated and used to build the math model. The maximum energetic efficiency of TOC, phenol, and acetaldehyde were obtained at 25.6 x 10(-9) mol carbon J(-1), 25.0 x 10(-9) mol phenol J(-1), and 2.0 x 10(-9) mol acetaldehyde J(-1), respectively. The predictions for the decomposition of acetaldehyde, phenol, and their intermediates were found to be in good agreement with the experimental results.