Electron transfer in the redox reaction of cobalt tetraphenylporphyrin incorporated in a Nafion film

Zhao, Feng; Zhang, Jian; Kaneko, Masao

doi:10.1002/(sici)1099-1409(200003)4:2<158::aid-jpp156>3.0.co;2-n

Cited by 10 publications

(3 citation statements)

References 43 publications

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“…Polymer-coated electrodes have been extensively studied because of their potential applications in electrocatalysis [13,14], electrosynthesis and molecular electronics and as substrates for immobilization of enzymes [15]. The underlying motivation for electrode surface modifications stems from the desire for improved electrocatalysis and freedom from surface fouling effects [16].…”

Section: Introductionsupporting

confidence: 92%

Electrochemical and catalytic properties of chromium tetraaminophthalocyanine

Obirai

Nyokong

2004

Journal of Electroanalytical Chemistry

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Section: Introductionsupporting

confidence: 92%

Electrochemical and catalytic properties of chromium tetraaminophthalocyanine

Obirai

Nyokong

2004

Journal of Electroanalytical Chemistry

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“…Among these, Nf has been used as a functional material due to notable features that include its superior chemical and photothermal stabilities, filming properties, and, more importantly, its hydrophilic -SO 3 – ionic-cluster regions, hydrophobic fluorocarbon regions, and the interfacial regions that are formed between them that makes it more suitable than other polymers for sensing applications [ 30 ]. It has been reported that metalloporphyrins occupy the hydrophobic and interfacial regions of the Nf film due to their hydrophobic nature [ 31 ]. Moreover, the polyvalent ampholytic nature of the tetrakis(4-nitrophenyl)porphyrin (TNPP) inner core provides sensitivity toward bases and acids [ 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

A Functionalized Tetrakis(4-Nitrophenyl)Porphyrin Film Optical Waveguide Sensor for Detection of H2S and Ethanediamine Gases

Tuerdi

Kari

Yin

et al. 2017

Sensors

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The detection of hydrogen sulfide (H2S) and ethanediamine, toxic gases that are emitted from industrial processes, is important for health and safety. An optical sensor, based on the absorption spectrum of tetrakis(4-nitrophenyl)porphyrin (TNPP) immobilized in a Nafion membrane (Nf) and deposited onto an optical waveguide glass slide, has been developed for the detection of these gases. Responses to analytes were compared for sensors modified with TNPP and Nf-TNPP composites. Among them, Nf-TNPP exhibited significant responses to H2S and ethanediamine. The analytical performance characteristics of the Nf-TNPP-modified sensor were investigated and the response mechanism is discussed in detail. The sensor exhibited excellent reproducibilities, reversibilities, and selectivities, with detection limits for H2S and ethanediamine of 1 and 10 ppb, respectively, and it is a promising candidate for use in industrial sensing applications.

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“…The adsorption energy of NO and NH 3 in the presence of an electric field was higher than that in the absence of electric field, indicating that the amount of adsorption of NO and NH 3 were enhanced by the presence of tourmaline; at the same time, the performance of the catalyst was promoted. Electron transfer reaction is the basic step of redox reaction [21], it is also the principle behind how the catalyst works. The spontaneous electric field of tourmaline can speed up proton and electron transfer, increase the degree of electron activation, raise the collision probability between reaction gas and catalyst and then promote the adsorption of NO and NH 3 , ultimately speeding up the chemical reaction rate.…”

Section: Dft Studymentioning

confidence: 99%

The Effect of Tourmaline on SCR Denitrification Activity of MnOx/TiO2 at Low Temperature

Helian

Cui

2020

Catalysts

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Selective catalytic reduction (SCR) technology is the most widely used flue gas denitration technology at present. The stability of a catalyst is the main factor limiting the development of this technology. In this study, an environmentally friendly and highly efficient NH3-SCR catalyst was prepared by coprecipitation method from acidolysis residue of industrial waste and tourmaline. We found that the addition of tourmaline has an important impact on the denitration activity of the catalytic material. The NOx conversion exceeded 97% at 200 °C with the dosage of 10% tourmaline, which is about 7% higher than that without doping. The improvement of catalytic performance was mostly attributed to the permanent electrodes of tourmaline, which effectively promotes the dispersion of MnOx/TiO2 catalytic materials, increases the number of acidic sites and changes the valence distribution of manganese ions in products, which speeds up the diffusion of protons and ions, resulting in the acceleration of redox reaction. These as-developed tourmaline-modified MnOx/TiO2 materials have been demonstrated to be promising as a new type of highly efficient low-temperature NH3-SCR catalyst.

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Electron transfer in the redox reaction of cobalt tetraphenylporphyrin incorporated in a Nafion film

Cited by 10 publications

References 43 publications

Electrochemical and catalytic properties of chromium tetraaminophthalocyanine

Electrochemical and catalytic properties of chromium tetraaminophthalocyanine

A Functionalized Tetrakis(4-Nitrophenyl)Porphyrin Film Optical Waveguide Sensor for Detection of H2S and Ethanediamine Gases

The Effect of Tourmaline on SCR Denitrification Activity of MnOx/TiO2 at Low Temperature

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