Corrosion Behavior of Coarse- and Fine-Grain Ni Coatings Incorporating NaH2PO4.H2O Inhibitor Treated Substrates

Ul‐Hamid, Anwar; Quddus, Abdul; Saricimen, H.; Dafalla, Hatim

doi:10.1590/1516-1439.253114

Cited by 15 publications

(9 citation statements)

References 21 publications

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“…It is noticed that the broad background band centred at 2θ =26 o might be owing to the successful incorporated nitrogen defects in the graphitic structure [36]. Aside from the graphitic carbon peak, three pronounced peaks can be observed at 2θ = 44.5, 51.9 and 76.4 o , corresponding to the (111), in comparison with CNT and N-CNT, (200) and (311) reflections of Ni nanoparticles, respectively and confirming the incorporation of Ni nanoparticles in the CNT catalysts [37]. A less conspicuous peak appearing at 41 o indicated the existence of nickel carbide (Ni3C) in the CNTs.…”

Section: Characterization Of Carbon Nanotubes Materialsmentioning

confidence: 66%

Nitrogen-doped bamboo-like carbon nanotubes with Ni encapsulation for persulfate activation to remove emerging contaminants with excellent catalytic stability

Kang

Duan

Wang

et al. 2018

Chemical Engineering Journal

211

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Nitrogen-doped bamboo-like carbon nanotubes encapsulated with nickel nanoparticles (Ni@NCNTs) were feasibly fabricated by a one-pot pyrolysis route. The characterization techniques revealed the surface morphology, structure and chemical composition of the as-prepared catalysts synthesized in different conditions. Ni@NCNTs were employed as both adsorbents and catalysts for activating persulfate to remove an emerging pollutant, antibiotic sulfachloropyridazine. The nitrogen modification enhanced both adsorption capacity and catalytic ability of Ni@NCNTs and proved to be a promising alternative to metal oxides and other carbon catalysts. Moreover, Ni@NCNTs showed an excellent stability because of nitrogen heteroatom doping and Ni nanoparticle encapsulation.Electron paramagnetic resonance (EPR) and classical radical quenching tests discovered a simultaneous radical/non-radical mechanism in Ni@NCNTs/persulfate system. The results indicated that the novel nano-architectured catalyst materials can show emerging functionalities for environmental remediation processes.

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Section: Characterization Of Carbon Nanotubes Materialsmentioning

confidence: 66%

Nitrogen-doped bamboo-like carbon nanotubes with Ni encapsulation for persulfate activation to remove emerging contaminants with excellent catalytic stability

Kang

Duan

Wang

et al. 2018

Chemical Engineering Journal

211

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“…2,3 In the case of the industrial Ni electroplating process, the most traditional plating solution is based on the use of the aqueous Watt's bath. 1,2,4,5 However, electrodeposition of metals and alloys from aqueous solution is strongly influenced by hydrogen evolution reaction. For instance, the parallel production of hydrogen decreases the electrodeposition efficiency, causing deleterious effects to the corrosion resistance of the electrodeposited coatings, such as the hydrogen embrittlement.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition Study of Ni Coatings on Copper from Choline Chloride-Based Deep Eutectic Solvents

Urcezino

Santos

Casciano

et al. 2016

J. Braz. Chem. Soc.

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Nickel was electrodeposited from choline chloride (ChCl)-based deep eutectic solvents (DESs) containing ethylene glycol (EG) and urea (U) on Cu substrate. The influence of the temperature and of DESs nature was evaluated. The diffusion coefficients of nickel varied from 2.2 × 10 −9 to 3.7 × 10 −8 cm 2 s −1 for ChCl:2U and from 1.3 × 10 −8 to 5.8 × 10 −8 cm 2 s −1 for ChCl:2EG with increasing temperature. The nucleation process of Ni on Cu at 70 °C was determined as instantaneous in ChCl:2EG and progressive in ChCl:2U using Scharifker and Hills model. The SEM characterization showed that with increasing temperature, more compact coatings were obtained. Linear polarization and electrochemical impedance spectroscopy were used to evaluate the corrosion performance of the obtained deposits in 3.5% NaCl. The coatings were more protective as higher the temperature of deposition, with polarization resistance (R p) values from 3.53 to 19.11 kΩ cm 2 .

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“…The peaks at 38.5° and 78.1° correspond to the alumina sample holder ( Dongsong RONG and Dongsong RONG, 2015 ). The nickel mesh ( Figure 1B ) showed peaks at 44.5°, 51.9° and 76.4° which correspond to the (111), (200) and (220) planes of the nickel ( Ul-Hamid et al, 2015 ). Copper foil ( Figure 1C ) presents three peaks at 43.3°, 50.4° and 74.7° which are attributed to the (111), (200) and (220) planes of copper ( Mardiansyah et al, 2018 ).…”

Section: Resultsmentioning

confidence: 99%

Electrochemical valorization of waste activated sludge for short-chain fatty acids production

Jafari

Botte

2022

Front. Chem.

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A tremendous amount of waste activated sludge (WAS) ends up in landfilling even after a substantial retention time during anaerobic digestion. This leftover activated sludge is an organic-rich material with the high potential to produce value-added chemicals such as short chain fatty acids (SCFAs). In the present study, a novel electrochemical conversion of activated sludge (E-WAS) was carried out on the surface of non-precious electrodes (nickel, stainless-steel and copper) in alkaline media at low applied potential and temperature. Cyclic voltammetry showed that Cu (II)/Cu (III) and Ni (II)/Ni(III) redox couple catalyzed the WAS oxidation reaction to produce SCFAs and hydrogen. The results revealed that Cu(II)/Cu(III) has higher catalytic oxidation capability towards SCFAs. Yields of 48.7, 21.4, and 14.6 mg SCFAs per g of volatile solids were achieved by using copper, nickel and stainless-steel as working electrodes, respectively. Post analysis characterization techniques indicate that copper oxide films lead to WAS oxidation. Total volatile solid removal of 30% was obtained at 35°C and 1.65 V in 0.2 M NaOH after 2 h of operation in an electrochemical digestor with copper electrodes which is more efficient than a conventional alkaline treatment (24 h, 55%, 1M NaOH). Ammonia was produced as the by-product of E-WAS oxidation. The highest amount of ammonia (250 mg L−1) was obtained by using nickel as the working electrode after 2 h operation at 35°C and 1.35 V applied potential. The change in WAS morphology revealed that the copper oxide film is an effective electrocatalyst for WAS disinfection.

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Corrosion Behavior of Coarse- and Fine-Grain Ni Coatings Incorporating NaH2PO4.H2O Inhibitor Treated Substrates

Cited by 15 publications

References 21 publications

Nitrogen-doped bamboo-like carbon nanotubes with Ni encapsulation for persulfate activation to remove emerging contaminants with excellent catalytic stability

Nitrogen-doped bamboo-like carbon nanotubes with Ni encapsulation for persulfate activation to remove emerging contaminants with excellent catalytic stability

Electrodeposition Study of Ni Coatings on Copper from Choline Chloride-Based Deep Eutectic Solvents

Electrochemical valorization of waste activated sludge for short-chain fatty acids production

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