Spectral investigation of interaction of copper phthalocyanine with nitrogen dioxide

Basova, Tamara V.; Kol’tsov, E.; Игуменов, И. К.

doi:10.1016/j.snb.2004.06.007

Cited by 21 publications

(14 citation statements)

References 28 publications

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“…The amounts of transferred electrons ( n ) of the Zn‐S‐Gc catalyst were calculated using the Koutecky‐Levich (K‐L) equations:

J^{- 1} = J_{L}^{- 1} + J_{K}^{- 1} = \frac{1}{B ω^{0.5}} + \frac{1}{J_{K}}

B = ((), 0.201) \cdot n \cdot F \cdot C_{O_{2}} \cdot \sqrt[3]{D_{O_{2}}^{2}} \cdot \frac{1}{\sqrt[6]{ν}}

where J is the measured current density, J k is the kinetic current density, and ω is the rotation rate of the electrode ( F = 96,485 C/mol,

C_{O_{2}}

= 1.2 × 10 −6 moL/mL,

D_{O_{2}}

= 1.9 × 10 −5 cm 2 /s, and υ = 0.01 cm 2 /s). The K‐L plots of the synthesized sample for the ORR are obtained as shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

Accelerating the oxygen reduction reaction via a bioinspired carbon‐supported zinc electrocatalyst

Nahavandi

Seyyedi

2019

J Chinese Chemical Soc

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Oxygen utilization in electrochemical energy generation systems requires to overcome the slow kinetics of oxygen reduction reaction (ORR). Herein, we have outstretched an efficient strategy in order for developing a bioinspired Zn (N 4 )/sulfur/graphitic carbon composite (Zn-S-Gc) with an effective performance for the ORR at low temperature. The catalyst composite was created by attaching the Zn (N 4 ) centers in the form of zinc phthalocyanine on the sulfur-linked graphitic carbon surface. The most positive ORR onset potential of about 1.00 V versus a reversible hydrogen electrode (RHE) was obtained due to the unique structure of a new catalyst in KOH solution (pH = 13) at low temperature (T = 298 K). The catalyst was evaluated using the rotating-disk electrode method in the potential range of −0.02-1.18 V versus RHE. The number of transferred electrons as one of the most important parameters (n > 3.70) is almost constant in a wide range of low overpotentials (0.1-0.6 V), which indicates a more efficient four-electron pathway from O 2 to H 2 O on the catalyst surface. The estimated Tafel slope in an appropriate range is about ≈ −133.3 mV/dec at a low current density and E 1/2 of the electrocatalyst displays a negative shift of only 11 mV after 10,000 cycles. The mean size of the catalyst centers is on the nanoscale (<50 nm). K E Y W O R D Selectrocatalyst, fuel cell, nanomaterials, nonprecious metal catalysts, oxygen reduction reaction, zinc phthalocyanine

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“…The amounts of transferred electrons ( n ) of the Zn‐S‐Gc catalyst were calculated using the Koutecky‐Levich (K‐L) equations:

J^{- 1} = J_{L}^{- 1} + J_{K}^{- 1} = \frac{1}{B ω^{0.5}} + \frac{1}{J_{K}}

B = ((), 0.201) \cdot n \cdot F \cdot C_{O_{2}} \cdot \sqrt[3]{D_{O_{2}}^{2}} \cdot \frac{1}{\sqrt[6]{ν}}

where J is the measured current density, J k is the kinetic current density, and ω is the rotation rate of the electrode ( F = 96,485 C/mol,

C_{O_{2}}

= 1.2 × 10 −6 moL/mL,

D_{O_{2}}

= 1.9 × 10 −5 cm 2 /s, and υ = 0.01 cm 2 /s). The K‐L plots of the synthesized sample for the ORR are obtained as shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

Accelerating the oxygen reduction reaction via a bioinspired carbon‐supported zinc electrocatalyst

Nahavandi

Seyyedi

2019

J Chinese Chemical Soc

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“…oxygen, nitrogen dioxide or ozone) with the π electron network of CuPc molecules. This interaction causes the electron transfer from CuPc to the gas molecules with the formation of the free holes as [33,34],…”

Section: Resultsmentioning

confidence: 99%

Impact of Self-Aligned Metal Capping Method on Submicron Copper Interconnections

Saito¹,

Noguchi²,

Kubo³

et al. 2004

Jpn. J. Appl. Phys.

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The change of the field effect mobility of copper (II) phthalocyanine (CuPc) ultra-thin films with the change of dielectric surface and deposition temperature has been systematically investigated. CuPc films are prepared on bare and modified SiO 2 substrates at different deposition temperatures. The crystalline structure and morphology of the films have been characterized by x-ray diffraction and atomic force microscopy. The observed device parameters show that the dielectric surface modification reduces the off-state mobile charge carrier density and interfacial trap density. Dielectric surfaces with lower or comparable surface energy to that of CuPc are found to produce devices with higher mobility. The dependence of mobility on deposition temperature shows a strong correlation with the behaviour of the dielectric layers at various temperatures and the diffusion of CuPc molecules.

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“…These tags are computer chips embedded in package which can be activated by the radio sensors that are electronically scanned and stamped. Food, drug and cosmetic act enhances the development of standards for the identification, validation, authentication, tracking of prescription oriented drugs [22][23][24][25] .…”

Section: Radio Frequency Identification Technology (Rfid)mentioning

confidence: 99%

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IJPSR

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Spectral investigation of interaction of copper phthalocyanine with nitrogen dioxide

Cited by 21 publications

References 28 publications

Accelerating the oxygen reduction reaction via a bioinspired carbon‐supported zinc electrocatalyst

Accelerating the oxygen reduction reaction via a bioinspired carbon‐supported zinc electrocatalyst

Impact of Self-Aligned Metal Capping Method on Submicron Copper Interconnections

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