Photochemical generation of superoxide radical anion in water

Hydrated electron (e aq − ) generation from p -benzoquinone/UV: Combined experimental and theoretical study

“…The reason for the dependence herein might be similar to that in the phenol/UV process reported in the previous study [34]. Since p-BQ is even much more sensitive than phenol for UV absorption at 253.7 nm [27], the increase of MCAA concentration may only affect the proportion of the involved competing reactions of eaq  [56] rather than the UV absorption for the generation of eaq  from p-BQ in the process. Moreover, the correlation between the amounts of p-BQ and MCAA degraded in the p-BQ/UV process was shown in Fig.…”

Deep oxidative desulfurization of liquid fuels

“…Using the aforementioned carriers, superoxide ion can be generated via sonolysis (Hart and Henglein 1985), pulse radiolysis (Sawyer et al 1983), photochemically (Draper and Crosby 1983), biochemically (Terada et al 1990), electrochemically (Maricle and Hodgson 1965, Divišek and Kastening 1975, AlNashef et al 2001, Wadhawan et al 2003) and chemically (Islam et al 2009, Silva et al 2010, Hayyan et al 2012a. It is commonly generated via electrochemical reduction of O 2 according to Reaction (R2).…”

SANGUINARINE, A PHOTOTOXIC H2O2‐PRODUCING ALKALOID

“…In aqueous solution and in the presence of SOD, sanguinarine chloride rapidly produced H202 when irradiated with NUV light. When compared to tryptophan, a well-known photoionizable compound (Draper and Crosby, 1981), the rate constant for HzOz formation from sanguinarine was three times greater (Fig. 1).…”