Rate constants for atmospheric trace organics scavenging SO4− in the Fe-catalysed autoxidation of S(IV)

Ziajka, J.; Pasiuk-Bronikowska, W.

doi:10.1016/j.atmosenv.2004.11.024

Cited by 76 publications

(26 citation statements)

References 18 publications

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“…The removal efficiency of Orange II was decreased obviously, indicating that Orange II decomposition was strongly inhibited by TBA, and • OH had a significant contribution on the dye decomposition. This result was also supported by inhibition of another scavenger, phenol, which exhibited strong quenching effect of SO 4 •− and • OH radicals ( k SO4 •− /phenol =8.8 × 10 9 M −1 ⋅s −1 , k •OH/phenol =6.6×10 9 M −1 ⋅s −1 ) ,. MeOH and TBA can react with SO 4 •− and • OH in liquid phase, although they are hydrophilic compounds, whereas phenol can readily approach the solid–liquid interface because of the weak polarity and high rate constants with free radicals .…”

Section: Resultsmentioning

confidence: 69%

Bimetallic Fe/Ti‐Based Metal–Organic Framework for Persulfate‐Assisted Visible Light Photocatalytic Degradation of Orange II

et al. 2018

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Amine‐functionalized bimetallic Fe/Ti‐based metal–organic frameworks (Fe/Ti‐MOF‐NH2) were synthesized via the solvothermal method and used as photocatalysts and activators for persulfate (PS)‐assisted visible light photocatalytic degradation of Orange II. Nearly 100% of Orange II was removed within 10 min in the Fe/Ti‐MOF‐NH2(3:1)/PS/Vis process, while only 10.7% and 70.9% of Orange II were removed in Fe/Ti‐MOF‐NH2(3:1)/Vis and Fe/Ti‐MOF‐NH2(3:1)/PS processes within 10 min, respectively. Therefore, the synergistic effect of PS activation and visible light photocatalysis was demonstrated by the Fe/Ti‐MOF‐NH2(3:1) composite. The enhanced photocatalytic activity of the photocatalyst can be attributed to the efficient electrons transfer by Fe3+/Fe2+ and Ti4+/Ti3+ redox cycles, activation of PS by photogenerated electrons to produce sulfate radicals (SO4•−), and increased formation of hydroxyl radicals (•OH). Concurrently, the Fe/Ti‐MOF‐NH2(3:1) photocatalyst also exhibited good reusability and stability in the photocatalytic reaction system.

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Section: Resultsmentioning

confidence: 69%

Bimetallic Fe/Ti‐Based Metal–Organic Framework for Persulfate‐Assisted Visible Light Photocatalytic Degradation of Orange II

et al. 2018

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“…However, phenol, another strong quencher of SO 4 −• and HO • radicals (k SO 4 − • /phenol = 8.8 × 10 9 M −1 s −1 , k HO • /phenol = 6.6 × 10 9 M −1 s −1 ) [54,55], exerts a strong inhibiting effect in the GAC/PS systems (as shown in Fig. 8(a)).…”

Section: Radical Mechanismmentioning

confidence: 96%

Activated carbon catalyzed persulfate oxidation of Azo dye acid orange 7 at ambient temperature

Yang

Shao

et al. 2011

Journal of Hazardous Materials

426

104

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“…Deviations between available measurements do only exist for the reaction with a-pinene (Table 18). It may be speculated that a loss of the volatile a-pinene from the reactor in the determination of Zjajka and Pasiuk-Bronikowska [99] occurred. Possible error sources have been discussed by these authors.…”

Section: So 4 à Kineticsmentioning

confidence: 98%

Tropospheric Aqueous‐Phase Free‐Radical Chemistry: Radical Sources, Spectra, Reaction Kinetics and Prediction Tools

et al. 2010

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The most important radicals which need to be considered for the description of chemical conversion processes in tropospheric aqueous systems are the hydroxyl radical (OH), the nitrate radical (NO(3)) and sulphur-containing radicals such as the sulphate radical (SO(4)(-)). For each of the three radicals their generation and their properties are discussed first in the corresponding sections. The main focus herein is to summarize newly published aqueous-phase kinetic data on OH, NO(3) and SO(4)(-) radical reactions relevant for the description of multiphase tropospheric chemistry. The data compilation builds up on earlier datasets published in the literature. Since the last review in 2003 (H. Herrmann, Chem. Rev. 2003, 103, 4691-4716) more than hundred new rate constants are available from literature. In case of larger discrepancies between novel and already published rate constants the available kinetic data for these reactions are discussed and recommendations are provided when possible. As many OH kinetic data are obtained by means of the thiocyanate (SCN(-)) system in competition kinetic measurements of OH radical reactions this system is reviewed in a subchapter of this review. Available rate constants for the reaction sequence following the reaction of OH+SCN(-) are summarized. Newly published data since 2003 have been considered and averaged rate constants are calculated. Applying competition kinetics measurements usually the formation of the radical anion (SCN)(2)(-) is monitored directly by absorption measurements. Within this subchapter available absorption spectra of the (SCN)(2)(-) radical anion from the last five decades are presented. Based on these spectra an averaged (SCN)(2)(-) spectrum was calculated. In the last years different estimation methods for aqueous phase kinetic data of radical reactions have been developed and published. Such methods are often essential to estimate kinetic data which are not accessible from the literature. Approaches for rate constant prediction include empirical correlations as well as structure activity relationships (SAR) either with or without the usage of quantum chemical descriptors. Recently published estimation methods for OH, NO(3) and SO(4)(-) radical reactions in aqueous solution are finally summarized, compared and discussed.

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Rate constants for atmospheric trace organics scavenging SO4− in the Fe-catalysed autoxidation of S(IV)

Cited by 76 publications

References 18 publications

Bimetallic Fe/Ti‐Based Metal–Organic Framework for Persulfate‐Assisted Visible Light Photocatalytic Degradation of Orange II

Bimetallic Fe/Ti‐Based Metal–Organic Framework for Persulfate‐Assisted Visible Light Photocatalytic Degradation of Orange II

Activated carbon catalyzed persulfate oxidation of Azo dye acid orange 7 at ambient temperature

Tropospheric Aqueous‐Phase Free‐Radical Chemistry: Radical Sources, Spectra, Reaction Kinetics and Prediction Tools

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