Nickel oxide/cobalt phthalocyanine nanocomposite for potential electronics applications

Sheena, P. A.; Adikay, Sreedevi; Viji, C; Varghese, Thomas

doi:10.1140/epjb/e2018-90280-8

Cited by 16 publications

(4 citation statements)

References 20 publications

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“…It is generally acknowledged that the basicity content will improve with an increase in Co loading. [37][38][39] This is due to the synergistic effect between Co and La on the activated carbon surface. [40][41][42][43] However, excess Co dopant covers the active sites of La, and thus provides lower basicity.…”

Section: Characterization Of Co 3 O 4(x) -La 2 O 3(y) /Ac Nano Catalystsmentioning

confidence: 99%

Efficient deoxygenation of waste cooking oil over Co₃O₄–La₂O₃-doped activated carbon for the production of diesel-like fuel

et al. 2020

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Section: Characterization Of Co 3 O 4(x) -La 2 O 3(y) /Ac Nano Catalystsmentioning

confidence: 99%

Efficient deoxygenation of waste cooking oil over Co₃O₄–La₂O₃-doped activated carbon for the production of diesel-like fuel

et al. 2020

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“…Porphyrins and phthalocyanines have been used as electrodes and have been reported for a wide range of reactions such as the ORR [32,[37][38][39][40], reduction of CO 2 [41][42][43][44][45], and the oxidation of H 2 O 2 and hydrazine [46,47] organic [48][49][50][51][52], biological [53,54] and inorganic compounds [55][56][57][58][59][60][61][62], as well as other forms of bio-mimicking [63,64]. They are also interesting since they may be readily bound to the surface of electrode materials such as carbon nanomaterials [23,28,34,48,49,[65][66][67][68][69][70][71][72][73] and inorganic materials [74][75][76] or polymerized [44,70,…”

mentioning

confidence: 99%

Penta-coordinated transition metal macrocycles as electrocatalysts for the oxygen reduction reaction

Govan

Orellana

Zagal

et al. 2020

J Solid State Electrochem

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The oxygen reduction reaction (ORR) is a highly important reaction in electrochemistry. The following short review details recent advances in novel non-precious metal catalysts containing transition metal macrocycles for use in the ORR. Unbound, many of these electrodes were found to generate high levels of side products such as O 2 − and H 2 O 2 via 2-electron processes, and for this reason, it is aimed to create systems which would favor a 4-electron process which would completely convert oxygen to H 2 O. The 4electron reduction of O 2 releases the most energy in a fuel cell. Novel catalytic materials containing metal macrocycles were created mimicking the structure of enzyme metal centers, the metal in the macrocycle bound to a fifth axial ligand. These structures were observed to exhibit improved catalytic activity, and in the case of cobalt, phthalocyanine systems were observed to move away from the inefficient 2-electron process towards the more complete 4-electron process in alkaline media. Both experimental results (XPS, EPR, cyclic voltammetry and polarization curves) and theoretical models were gathered for various pentacoordinate systems and various electronic effects of the axial ligand on metal center were proposed. Penta-coordinate macrocycles are an important tool for further manipulating and tuning the electronic behavior of transition metal centers for catalysis of the ORR.

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“…In addition to the diffraction peaks of In 2 O 3 , the features at 2θ = 37.82, 43.85, and 63.79° (Figure b) are associated with the (111), (200), and (220) crystal planes of the NiO phase (JCPDS No. 73-1519), respectively . This indicates that TiO 2 /ITO and NiO/ITO layers have been formed on both surfaces of the device.…”

Section: Results and Discussionmentioning

confidence: 99%

Preparation of an Inorganic All-Solid-State Electrochromic Device with Excellent Open-Circuit Memory

Ren,

Liu,

Nishii

et al. 2024

ACS Appl. Mater. Interfaces

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Due to the spontaneous transport of small-sized cations and redox reactions under open circuit conditions, the currently reported coloring electrochromic devices (ECDs) may self-bleach easily. The resulting ECDs exhibit poor open-circuit memory, which limits their applications in static display advertisement. By constructing energy barriers to effectively control small-sized cation transport, the redox reaction could be suppressed, thereby inhibiting the self-bleaching of ECDs. In this study, phosphate glass is used as an electrolyte to construct high-energy barriers. Sodium ions in phosphate glass absorb external heat to cross energy barriers and become conductive charge carriers. In this case, the electrochromism of ECDs is allowed. On the contrary, after the absorbed heat energy is released, sodium ions are immediately trapped by oxygen ions in the PO4 unit, becoming frozen ions. At this point, the electrochromization of ECDs is prohibited. Based on the ionic conductive feature of phosphate glass, ECDs absorb heat and are colored by applying an electric field first. Then, ECDs release the thermal energy and the sodium ions transport in the electrolyte is blocked to cut off the self-bleaching pathway. The prepared inorganic all-solid-state ECDs maintained the colored state for several months using the method mentioned above, which solved the problem of the poor open-circuit memory of ECDs.

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Nickel oxide/cobalt phthalocyanine nanocomposite for potential electronics applications

Cited by 16 publications

References 20 publications

Efficient deoxygenation of waste cooking oil over Co₃O₄–La₂O₃-doped activated carbon for the production of diesel-like fuel

Efficient deoxygenation of waste cooking oil over Co₃O₄–La₂O₃-doped activated carbon for the production of diesel-like fuel

Penta-coordinated transition metal macrocycles as electrocatalysts for the oxygen reduction reaction

Preparation of an Inorganic All-Solid-State Electrochromic Device with Excellent Open-Circuit Memory

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Nickel oxide/cobalt phthalocyanine nanocomposite for potential electronics applications

Cited by 16 publications

References 20 publications

Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel

Efficient deoxygenation of waste cooking oil over Co3O4–La2O3-doped activated carbon for the production of diesel-like fuel

Penta-coordinated transition metal macrocycles as electrocatalysts for the oxygen reduction reaction

Preparation of an Inorganic All-Solid-State Electrochromic Device with Excellent Open-Circuit Memory

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Efficient deoxygenation of waste cooking oil over Co₃O₄–La₂O₃-doped activated carbon for the production of diesel-like fuel

Efficient deoxygenation of waste cooking oil over Co₃O₄–La₂O₃-doped activated carbon for the production of diesel-like fuel