Aging of plasma-activated carbon surfaces: Challenges and opportunities

Functionalization of Graphite with Oxidative Plasma

“…Cold plasma processing is a low-cost, highly effective, and green technology widely used for modification of the surface properties of materials. It is gaining popularity in the fields of biomaterials, adsorbents, polymers, electrodes, and others [ 12 , 13 , 14 ]. Depending on the application, plasma treatment is used to clean, coat/deposit, or functionalize the surface [ 14 ].…”

“…It is gaining popularity in the fields of biomaterials, adsorbents, polymers, electrodes, and others [ 12 , 13 , 14 ]. Depending on the application, plasma treatment is used to clean, coat/deposit, or functionalize the surface [ 14 ]. The degree of surface changes depends on plasma parameters such as generator power, total gas pressure, and plasma treatment time [ 13 , 15 ].…”

“…The literature survey indicates the particular significance of plasma treatment in the area of carbon materials. Their properties are tailored by plasma modification in many different applications [ 13 , 14 , 15 , 17 , 18 ]. In [ 19 ], the authors described the positive influence of plasma treatment (plasma N 2 + H 2 ) on the graphite anode in lithium ion batteries.…”

Electrocatalytic performance of oxygen-activated carbon fibre felt anodes mediating degradation mechanism of acetaminophen in aqueous environments

“…In studies, different types of plasma have been used to improve carbon materials' contact angles by using various gases (Hammer et al, 2014). It is known that oxygen plasma forms phenolic and carboxyl functional groups, which significantly influence the hydrophilicity of porous carbon materials and improve the redox activity of these electrodes (Dixon et al, 2016;Ortiz-Ortega et al, 2021). Likewise, nitrogen-carbon functional groups and nitrogen groups (pyrrolic and quaternary nitrogen), formed via surface nitrogen plasma modification, enhance the electron transfer rate and improve the wettability (contact angle <90 • ) (Huang et al, 2017;Kahoush et al, 2019;Ortiz-Ortega et al, 2021).…”

“…It is known that oxygen plasma forms phenolic and carboxyl functional groups, which significantly influence the hydrophilicity of porous carbon materials and improve the redox activity of these electrodes (Dixon et al, 2016;Ortiz-Ortega et al, 2021). Likewise, nitrogen-carbon functional groups and nitrogen groups (pyrrolic and quaternary nitrogen), formed via surface nitrogen plasma modification, enhance the electron transfer rate and improve the wettability (contact angle <90 • ) (Huang et al, 2017;Kahoush et al, 2019;Ortiz-Ortega et al, 2021). The physicochemical properties of carbon materials can be easily manipulated through control of the plasma treatment process parameters, opening up possibilities for CFE applications.…”