Hydrogen peroxide decomposition on manganese oxide (pyrolusite): Kinetics, intermediates, and mechanism

Do, Si-Hyun; Batchelor, Bill; Lee, Hongkyun; Kong, Sung-Ho

doi:10.1016/j.chemosphere.2008.11.075

Cited by 178 publications

(101 citation statements)

References 16 publications

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“…Kinetic analysis of H 2 O 2 decomposition data suggests that the reaction behavior follows a pseudo-first-order rate with respect to H 2 O 2 concentration at the beginning of the reaction which is consistent with the observation of other researchers [2,11,15,18,19]. The rate values of the hydrogen peroxide decomposition are displayed in Table 1.…”

Section: Catalytic Testssupporting

confidence: 82%

Effect of Hydrogen Treatment on the Catalytic Activity of Iron Oxide Based Materials Dispersed Over Activated Carbon: Investigations Toward Hydrogen Peroxide Decomposition

2009

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The effect of hydrogen treatment (400°C/1 h) on the catalytic properties toward H 2 O 2 decomposition of iron oxide based materials dispersed over activated carbon were investigated. Two different supports were evaluated: a commercial activated carbon (ACM) and an activated carbon produced from spent coffee grounds (ACR). The catalysts were characterized using XRD, SEM, N 2 -sorption, XPS and TPR analysis. The main results suggest the formation of composites with high surface area ([800 m 2 g -1 ) and the hydrogen treatment resulted in a great increase in the catalytic activity, probably as a function of the reduced iron species (Fe 2? and Fe 0 ) formed with the treatment. Moreover, the catalyst prepared with ACR showed to be more active than that prepared from ACM.

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Section: Catalytic Testssupporting

confidence: 82%

Effect of Hydrogen Treatment on the Catalytic Activity of Iron Oxide Based Materials Dispersed Over Activated Carbon: Investigations Toward Hydrogen Peroxide Decomposition

2009

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“…Hydrogen peroxide (1 to 1,000 M) was added to the enzyme assay, and there was no stimulatory effect on activity. In fact, high levels of hydrogen peroxide (Ͼ50 M) decreased activity, likely due to reducing the oxidized Mn formed in the reaction (29). Catalase is likely present in the E. coli cell extract (30), but it may not be highly active, since addition of hydrogen peroxide decreased Mn oxidation.…”

Section: Resultsmentioning

confidence: 99%

Heterologous Expression and Characterization of the Manganese-Oxidizing Protein from Erythrobacter sp. Strain SD21

Nakama

Medina

Lien

et al. 2014

Appl Environ Microbiol

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The manganese (Mn)-oxidizing protein (MopA) from Erythrobacter sp. strain SD21 is part of a unique enzymatic family that is capable of oxidizing soluble Mn(II). This enzyme contains two domains, an animal heme peroxidase domain, which contains the catalytic site, followed by a C-terminal calcium binding domain. Different from the bacterial Mn-oxidizing multicopper oxidase enzymes, little is known about MopA. To gain a better understanding of MopA and its role in Mn(II) oxidation, the 238-kDa fulllength protein and a 105-kDa truncated protein containing only the animal heme peroxidase domain were cloned and heterologously expressed in Escherichia coli. Despite having sequence similarity to a peroxidase, hydrogen peroxide did not stimulate activity, nor was activity significantly decreased in the presence of catalase. Both pyrroloquinoline quinone (PQQ) and hemin increased Mn-oxidizing activity, and calcium was required. The K m for Mn(II) of the full-length protein in cell extract was similar to that of the natively expressed protein, but the K m value for the truncated protein in cell extract was approximately 6-fold higher than that of the full-length protein, suggesting that the calcium binding domain may aid in binding Mn(II). Characterization of the heterologously expressed MopA has provided additional insight into the mechanism of bacterial Mn(II) oxidation, which will aid in understanding the role of MopA and Mn oxidation in bioremediation and biogeochemical cycling.

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“…More recently, OL-1 materials have been used in the electrocatalytic oxidation of styrene under voltage, O 2 and H 2 O 2 [25]. Moreover, it has been reported that the active radicals are generated in manganese oxide-H 2 O 2 systems [26][27][28][29] system [29]. Therefore, OL-1 material should be a forceful candidate as Fenton catalyst for the effective removal of organics present in water.…”

Section: Introductionmentioning

confidence: 99%

Decolorization of methylene blue in layered manganese oxide suspension with H2O2

Zhang

Nie

et al. 2011

Journal of Hazardous Materials

123

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a b s t r a c tLayered birnessite-type manganese oxides (Na-OL-1) were prepared via a redox reaction involving MnO 4 − and Mn 2+ under markedly alkaline conditions. According to the XRD analysis, the resulting material exhibited a well-crystallized octahedral layer (OL) structure with several different phases, including ␤-MnOOH, ␣-MnOOH and ␥-Mn 3 O 4 . The catalyst was highly effective for the decolorization and degradation of methylene blue (MB) in the presence of H 2 O 2 at neutral pH. The tested MB was completely decolorized in Na-OL-1 suspension by the fraction dosing of H 2 O 2 (556.5 mM at the beginning and then 183.8 mM at 40 min). Based on the studies of electron spin resonance and the effect of radical scavengers, the 1 O 2 and O 2 •− were the main reactive oxygen species (ROS) in the reaction. It was found that both oxygen and ROS were generated from the decomposition of H 2 O 2 in Na-OL-1 suspension, wherein the decomposition pathways were proposed. The generation of H 2 O 2 in Na-OL-1 suspension at air atmosphere indicated that the existence of multivalent manganese oxides greatly enhanced the interfacial electron transfer, leading to the high activity of Na-OL-1.

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Hydrogen peroxide decomposition on manganese oxide (pyrolusite): Kinetics, intermediates, and mechanism

Cited by 178 publications

References 16 publications

Effect of Hydrogen Treatment on the Catalytic Activity of Iron Oxide Based Materials Dispersed Over Activated Carbon: Investigations Toward Hydrogen Peroxide Decomposition

Effect of Hydrogen Treatment on the Catalytic Activity of Iron Oxide Based Materials Dispersed Over Activated Carbon: Investigations Toward Hydrogen Peroxide Decomposition

Heterologous Expression and Characterization of the Manganese-Oxidizing Protein from Erythrobacter sp. Strain SD21

Decolorization of methylene blue in layered manganese oxide suspension with H2O2

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