3.3 Surface Finish Coatings

Sahoo, Prasanta; Das, Suman Kalyan; Davim, J. Paulo

doi:10.1016/b978-0-12-803581-8.09167-0

Cited by 15 publications

(8 citation statements)

References 27 publications

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“…Among various articles published on the in situ preparation of numerous different nanocomposites in the application of electrochemical sensors, electrodeposition is among the most commonly used method for surface modification. Electrodeposition uses electrical currents to reduce metallic ions from the electrolyte solution of a specific material and coat the material as a thin film onto a conductive substrate surface (electrode) [ 126 , 127 , 128 ]. Overall, the electrodepositing process may either be: (i) an anodic process in which a metal anode in the solution is electrochemically oxidized, reacts together, and then deposits on the anode; or (ii) a cathodic process in which components (ions, clusters or NPs) are deposited from solution precursors onto the cathode [ 128 ].…”

Section: Functionalization Of Mos 2 Nanosheets Wit...mentioning

confidence: 99%

Functionalization of 2D MoS2 Nanosheets with Various Metal and Metal Oxide Nanostructures: Their Properties and Application in Electrochemical Sensors

2022

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Two-dimensional transition metal dichalcogenides (2D TMDs) have gained considerable attention due to their distinctive properties and broad range of possible applications. One of the most widely studied transition metal dichalcogenides is molybdenum disulfide (MoS2). The 2D MoS2 nanosheets have unique and complementary properties to those of graphene, rendering them ideal electrode materials that could potentially lead to significant benefits in many electrochemical applications. These properties include tunable bandgaps, large surface areas, relatively high electron mobilities, and good optical and catalytic characteristics. Although the use of 2D MoS2 nanosheets offers several advantages and excellent properties, surface functionalization of 2D MoS2 is a potential route for further enhancing their properties and adding extra functionalities to the surface of the fabricated sensor. The functionalization of the material with various metal and metal oxide nanostructures has a significant impact on its overall electrochemical performance, improving various sensing parameters, such as selectivity, sensitivity, and stability. In this review, different methods of preparing 2D-layered MoS2 nanomaterials, followed by different surface functionalization methods of these nanomaterials, are explored and discussed. Finally, the structure–properties relationship and electrochemical sensor applications over the last ten years are discussed. Emphasis is placed on the performance of 2D MoS2 with respect to the performance of electrochemical sensors, thereby giving new insights into this unique material and providing a foundation for researchers of different disciplines who are interested in advancing the development of MoS2-based sensors.

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Section: Functionalization Of Mos 2 Nanosheets Wit...mentioning

confidence: 99%

Functionalization of 2D MoS2 Nanosheets with Various Metal and Metal Oxide Nanostructures: Their Properties and Application in Electrochemical Sensors

2022

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“…The top coat protects the layers below from environmental agents such as UV light from the sun and provides primary abrasion resistance and decoration when necessary [132]. EN ISO 12944-6:2007 [71] lists some paint systems and for purposes of application paints can be classified as solvent-borne, water-borne or solvent-free.…”

Section: Coating Systemsmentioning

confidence: 99%

Corrosion Protection Systems and Fatigue Corrosion in Offshore Wind Structures: Current Status and Future Perspectives

Price

Figueira

2017

Coatings

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Concerns over reducing CO 2 emissions associated with the burning of fossil fuels in combination with an increase in worldwide energy demands is leading to increased development of renewable energies such as wind. The installation of offshore wind power structures (OWS) is one of the most promising approaches for the production of renewable energy. However, corrosion and fatigue damage in marine and offshore environments are major causes of primary steel strength degradation in OWS. Corrosion can reduce the thickness of structural components which may lead towards fatigue crack initiation and buckling. These failure mechanisms affect tower service life and may result in catastrophic structural failure. Additionally, environmental pollution stemming from corrosion's by-products is possible. As a result, large financial investments are made yearly for both the prevention and recovery of these drawbacks. The corrosion rate of an OWS is dependent on different characteristics of attack which are influenced by access to oxygen and humidity. Structural degradation can occur due to chemical attack, abrasive action of waves, and microorganism attacks. Inspired by technological and scientific advances in recent years, the purpose of this paper is to discuss the current protective coating system technologies used to protect OWS as well as future perspectives.

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“…Galvanization or galvanizing is the process of applying a protective zinc coating to steel or iron, to prevent rusting, improve wear resistance or for ornamental purposes [3]. It consists of sequential electrochemical processes resulting in wastewater generation of different composition [3,6]. There are two widely known processes; the hot-dip galvanization and the cold galvanization [6,7].…”

mentioning

confidence: 99%

“…It consists of sequential electrochemical processes resulting in wastewater generation of different composition [3,6]. There are two widely known processes; the hot-dip galvanization and the cold galvanization [6,7]. The most common method is hot-dip galvanizing, in which the metal parts are submerged in a bath of molten hot zinc [6,8].…”

mentioning

confidence: 99%

“…There are two widely known processes; the hot-dip galvanization and the cold galvanization [6,7]. The most common method is hot-dip galvanizing, in which the metal parts are submerged in a bath of molten hot zinc [6,8]. Cold galvanization has three main phases: surface preparation, galvanizing and post treatment, each phase involving the use of rinsing tanks with water and are often loaded with high concentrations of heavy metals which are often disposed indiscriminately [8].…”

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confidence: 99%

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Remediation of Heavy Metals from Galvanic Wastewater Using Cow Bone Char as Low Cost Adsorbent

Olaoye

Ojoawo

Bamigbade

et al. 2021

IJEE

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The adhesion of metal ions from wastewater to surface of a material in an adsorption process had proven to be effective for remediation of wastewater before discharge. There is a growing demand to utilize alternative low-cost adsorbents for the removal of heavy metals from galvanic wastewater in most developing countries. Cow bones are cheap, readily available and can be sourced locally from slaughterhouses and abattoir. Therefore, their use as an alternative adsorbent for remediation of galvanic wastewater had to be assessed. In this study, the efficacy of cow bone char (CBC) was assessed for simultaneous heavy metal ions removal from real life galvanic wastewater in a competitive adsorption process. The galvanic wastewater was characterized using atomic adsorption spectrophotometry while the CBC was characterized using X-ray Fluorescence (XRF), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR). Batch experiment was performed to determine the effect of adsorbent dose, contact time and agitation speed on the removal efficiency of heavy metal ions from the galvanized wastewater. The concentrations of Mn 2+ , Fe 2+ , Zn 2+ , Pb 2+ and Cr 2+ in the raw wastewater exceeded the WHO and EPA standards. The adsorbent revealed a significant distribution of well-developed porous, rough surfaces with cracks characterized by different functional groups for the efficient adsorption process. The optimum adsorbent dose for all the metal ions was 0.04 g/100 mL at an optimum contact time of 60 minutes except for Fe 2+ with optimum contact time of 20 minutes, and agitation speed of 150 rpm. The maximum metal removal efficiencies obtained for Mn 2+ , Fe 2+ , Zn 2+ , Pb 2+ and Cr 2 were 99.7%, 100%, 99%, 90% and 85% + , respectively. The average adsorption capacity for Mn 2+ , Fe 2+ , Zn 2+ , Pb 2+ and Cr 2+ were 0. 44 mg/g, 26.7 mg/g, 78.5 mg/g, 0.133 mg/g for and 10.36 mg/g, respectively. CBC offers efficient and cost-effective removal of selected metal ions from galvanized wastewater.

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3.3 Surface Finish Coatings

Cited by 15 publications

References 27 publications

Functionalization of 2D MoS2 Nanosheets with Various Metal and Metal Oxide Nanostructures: Their Properties and Application in Electrochemical Sensors

Functionalization of 2D MoS2 Nanosheets with Various Metal and Metal Oxide Nanostructures: Their Properties and Application in Electrochemical Sensors

Corrosion Protection Systems and Fatigue Corrosion in Offshore Wind Structures: Current Status and Future Perspectives

Remediation of Heavy Metals from Galvanic Wastewater Using Cow Bone Char as Low Cost Adsorbent

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