The role of surface functionalization in the solar light-induced production of reactive oxygen species by single-walled carbon nanotubes in water

Equilibrium concentration of singlet oxygen in photoreaction of reaction center/carbon nanotube bionanocomposites

“…For example, it was found that reactive oxygen species, also 1 O 2 , were generated by a carboxylated SWCNT (SWCNT-COOH) under a long-time irradiation by natural sunlight [6,16] or UV light [17]. The production of 1 O 2 in the study of the photochemical transformations of MWCNT-COOH was also detected [18].…”

“…Due to efficient energy transfer these are known 1 aqueous solution within the solar spectrum (l ¼ 300-410 nm) irradiation [6].…”

Anion exchange capacity of biochar

“…Singlet oxygen has three resonance structures as illustrated in Figure 3.4. The zwitterion structures of singlet oxygen are highly reactive and are a strong nucleophile which reacts with olephenic (Clennan and Mehrsheikh-Mohammadi 1983) and aromatic C (Chen and Jafvert 2011;Goeringer et al 2001) as depicted by the scheme of oxidation for naphthalene in Figure 3.5. Mao et al 2012).…”

A Review of the Properties and Processes Determining the Fate of Engineered Nanomaterials in the Aquatic Environment

“…For instance, sunlight can catalyze some redox reactions (photooxidation and photoreduction) of photoactive NMs (e.g., TiO 2 , CNTs, fullerenes) and produces reactive oxygen species when exposed to sunlight (Chen and Jafvert, 2011). Others may be oxidized or reduced by sunlight, changing their redox state, charge, and therefore aggregation state and toxicity (Hou and Jafvert, 2008;Lee et al, 2009).…”