The role of hydroxyl and carboxyl functional groups in adsorption of copper by carbon nanotube and hybrid graphene–carbon nanotube: insights from molecular dynamic simulation

Poorsargol, Mahdiye; Razmara, Zohreh; Amiri, Mir Masumeh

doi:10.1007/s10450-020-00214-7

Cited by 21 publications

(10 citation statements)

References 49 publications

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“…These peaks show that both types of AC have practically the same oxygenated surface functional groups that are attached to the surface of the produced AC. However, presence of characteristic carboxylic and anhydride groups appears to be more effective in adsorbing the cationic contaminants [ 35 ]. The presence of carboxyl, ketone and alkynes indicate the active contribution of these functional groups in adsorption of methylene blue dye.…”

Section: Resultsmentioning

confidence: 99%

Sustainable production of activated carbon from indigenous Acacia etbaica tree branches employing microwave induced and low temperature activation

Saleem

2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Sustainable production of activated carbon from indigenous Acacia etbaica tree branches employing microwave induced and low temperature activation

Saleem

2024

Heliyon

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“…It is worth mentioning that, although the presence of pores and the increase in surface area also improve the adsorption capacity for more binding sites and enhance the adsorption process, hydrophobicity is the main driving force of adsorption (Poorsargol et al, 2020). However, commonly, the COOH groups have been found to have an effective adsorption capacity; adsorption is thus significant even in the hydrophilic surface.…”

Section: Resultsmentioning

confidence: 99%

“…The surface coverage of the adsorbed water film grows continuously beyond a monolayer formation. The hydrogen bonding and the electrostatic interaction of the oil with the COOH groups on the cellulose acetate fiber could be the force driving oil adsorption on the cellulose acetate fiber (Nam et al, 2014;Poorsargol et al, 2020;Zhao et al, 2023). Thus, a higher COOH content could be the reason for the better performance of the cellulose acetate fiber in removing oil from water.…”

Section: Resultsmentioning

confidence: 99%

Smart win–win waste management: superhydrophobic filter using valorized cellulose acetate from discarded cigarette butts for cleaning up marine oil spill at Hurghada Red Sea shore in Egypt

Nabwey,

Abdelkreem,

Tony

et al. 2024

Front. Mar. Sci.

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The essential target of academics and the industrial sector is the innovation of an industrial ecology approach. Worldwide, cigarette butts (CBs) comprise the most predominant form of litter that spreads into the ecosystem and inland. In the meantime, oil is spilled into marine life from various activities and transportation. The result is a complex oil–water composition in a high concentration that causes severe hazards to the environment and to aquatic life. In this regard, the current investigation focuses on obtaining hydrophobic cellulose acetate from CBs for use as a filter media. The filter is applied in marine oil spill separation as a win–win industrial ecology technique. Initially, the separated CB residuals were prepared by successive washing. Subsequently, the obtained cellulose acetate fibers were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Furthermore, the new CB-based filters were used in the separation/adsorption of marine oil wastewater spill. Subsequently, a group of experiments were conducted. The results showed that the cleanup efficiency could be up to 99% in terms of chemical oxygen demand (COD). Moreover, the products were recovered by washing with hot water for further use, which showed high removal activity that reached 95% after successive uses. In comparison to commercial oil sorption materials, the results were promising as the RP-C18 cartridge revealed a maximum oil removal of 90%. Such preliminary data on a cellulose acetate filter scheme are a good indicator in the development of an oil spill facility, being a suitable candidate for controlling oil wastewater effluent streams.

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“…The adsorption of Cu 2+ by carboxylic nanocellulose was mainly achieved through the adsorption of Cu 2+ by carboxyl and hydroxyl sites, and carboxyl groups were found to be more effective in adsorbing Cu 2+ than hydroxyl groups [22,41]. The possible complexations of Cu 2+ with carboxyl groups on the surface of carboxylic nanocellulose can be summarized in the following reactions [37,39].…”

Section: Study On the Maximum Adsorption Capacity Of Carboxylic Nanocellulosementioning

confidence: 99%

“…For DNC, the hydroxyl groups at the C2 and C3 sites are oxidized to carboxyl groups, and it is difficult for the one hydroxyl group remaining at the C6 site to capture copper ions alone [36,41]. Therefore, the theoretical maximum adsorption capacity of DNC was calculated as follows:…”

Section: Study On the Maximum Adsorption Capacity Of Carboxylic Nanocellulosementioning

confidence: 99%

Adsorption Properties and Cost of Dicarboxylic Nanocellulose on Copper Ions for Wastewater Treatment

Sun¹,

Yang²,

He³

et al. 2022

Journal of Renewable Materials

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The accumulation of Cu 2+ in water is a potential threat to human health and environment. Dicarboxylic nanocellulose (DNC) with rich carboxyl groups was prepared through the NaIO 4 -NaClO 2 sequential oxidation method to efficiently remove copper ions, and the Cu 2+ adsorption properties and cost were studied. The maximum adsorption capacity reached 184.2 mg/g at pH 6 and an adsorbent dose of 5 g/L. Theoretically, the maximum adsorption capacities of monocarboxylic nanocellulose (MNC), DNC, and tricarboxylic nanocellulose (TNC) with carboxyl groups as the main adsorption sites were calculated to be 228.7, 261.3, and 148.1 mg/g, respectively. The Cu 2+ adsorption costs of MNC, DNC, and TNC were calculated and compared with those of powdered activated carbon (PAC). The Cu 2+ adsorption capacity of DNC is higher than that of PAC, and the adsorption cost is close to or lower than that of PAC, demonstrating that the DNC prepared by sequential oxidation of NaIO 4 -NaClO 2 has competitive adsorption capacity and cost in the treatment of wastewater containing Cu 2+ .

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The role of hydroxyl and carboxyl functional groups in adsorption of copper by carbon nanotube and hybrid graphene–carbon nanotube: insights from molecular dynamic simulation

Cited by 21 publications

References 49 publications

Sustainable production of activated carbon from indigenous Acacia etbaica tree branches employing microwave induced and low temperature activation

Sustainable production of activated carbon from indigenous Acacia etbaica tree branches employing microwave induced and low temperature activation

Smart win–win waste management: superhydrophobic filter using valorized cellulose acetate from discarded cigarette butts for cleaning up marine oil spill at Hurghada Red Sea shore in Egypt

Adsorption Properties and Cost of Dicarboxylic Nanocellulose on Copper Ions for Wastewater Treatment

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