Carbon nanotubes derived from waste cooking oil for the removal of emerging contaminants

Abstract

Multi-walled carbon nanotube (MWCNT) were synthesized using ethyl acetate and waste cooking oil as more green and sustainable carbon sources, and further successfully applied for the adsorption of norfloxacin and 17α-ethinylestradiol.

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

“…[30][31][32] These biomass *value-added materials, from an environmental and sustainable point of view, can be applied as carbon-based adsorbents (activated carbon, biochar, magnetic biochar, and mesoporous carbon) in the capture of gases such as CO 2 and methane and in the treatment of wastewater. 7,[33][34][35][36][37][38][39] Among the diverse range of carbon-based adsorbents, hierarchically porous carbons (HPCs) derived from biomass stand out due to their economic and sustainable nature, as well as their high adsorption capacities. 40 HPCs are materials that exhibit a multimodal distribution of pore sizes with interconnected pores.…”

“…30–32 These biomass *value-added materials, from an environmental and sustainable point of view, can be applied as carbon-based adsorbents (activated carbon, biochar, magnetic biochar, and mesoporous carbon) in the capture of gases such as CO 2 and methane and in the treatment of wastewater. 7,33–39…”

Sustainable Nanomaterials for Biomedical Applications

“…Green synthesis methods have been developed to produce CNTs using renewable resources such as plants (leaves, seeds, roots, and stems) [ 134 ]. Duarte et al synthesized CNTs from waste cooking oil using the CVD method [ 137 ]. Microwaves can be considered an environment-friendly approach that utilizes electromagnetic energy to heat precursor materials [ 131 ].…”

Microwave-assisted synthesis of carbon-based nanomaterials from biobased resources for water treatment applications: emerging trends and prospects

“…In this regard, there has been a rise in interest in a more sustainable and greener synthesis of carbon nanomaterials that focuses on the development of environmentally friendly and sustainable alternatives (Deng et al, 2016;Vivekanandhan et al, 2017;Fathy et al, 2020;Shi et al, 2023a). These alternatives focus on the use of non-toxic, renewable, biodegradable, and abundant precursors, such as honey (Mandani et al, 2017) and juices (Wang et al, 2022), biomass (Zhao et al, 2020), vegetable and animal oils (Duarte et al, 2022), industrial residues (Hu et al, 2019), and agricultural waste (Somanathan et al, 2015). Supplementary Table S1 provides a summary of biobased resources that have been utilized in the synthesis of carbon nanomaterials through conventional techniques.…”

“…CNTs-based adsorbents can interact with inorganic and organic pollutants through a variety of mechanisms, including complexation, ion exchange, electrostatic interaction, covalent bonding, precipitation, and van der Waal's interaction, among others (Figure 8) (Adeola and Forbes, 2021a;Sajid et al, 2022). Chemical bonds between organic compounds and CNTs have occasionally been described as a mode of interaction (Indrawirawan et al, 2015;Duarte et al, 2022).…”