Green hydrothermal synthesis of high quality single and few layers graphene sheets by bread waste as precursor

Panahi-Kalamuei, Mokhtar; Amiri, Omid; Salavati‐Niasari, Masoud

doi:10.1016/j.jmrt.2020.01.001

Cited by 33 publications

(11 citation statements)

References 32 publications

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“…In total, results of these studies suggest that graphene or graphene derivatives synthesized using hydrothermal process from waste materials show high adsorption capacity for the removal of diverse environmental contaminants. Food waste can be used as a starting material for the production of graphene because Panahi-Kalamuei et al used bread waste for the synthesis of a single layer of graphene sheet with 2 g/L of precursor (bread waste) concentration, 180 °C of reaction temperature, and 7.0 pH of the reaction medium . Overall, lignocellulosic biomass (e.g., wood) and carbon-rich waste materials (e.g., agricultural wastes and food waste) are widely used as a precursor to replace the expensive graphite to produce graphene and graphene derivatives.…”

Section: Coupling Of Hydrothermal Treatment With Other Technologiesmentioning

confidence: 99%

Hydrothermal Treatment of Biomass Feedstocks for Sustainable Production of Chemicals, Fuels, and Materials: Progress and Perspectives

et al. 2023

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Hydrothermal process is an emerging technology that contributes to sustainable production of biomass-derived chemicals, fuels, and materials. This technology uses hot compressed water to convert various biomass feedstocks including recalcitrant organic compounds in biowastes into desired solid, liquid, and gaseous products. In recent years, considerable progress has been made in the hydrothermal conversion of lignocellulosic as well as nonlignocellulosic biomass to value-added products and bioenergy to fulfill the principles of circular economy. However, it is important to assess hydrothermal processes in terms of their capabilities and limitations from different sustainability aspects so that further advances can be made toward improvement of their technical maturity and commercialization potential. The key aims of this comprehensive review are to (a) explain the inherent properties of biomass feedstocks and physio-chemical characteristics of their bioproducts, (b) elucidate related transformation pathways, (c) clarify the role of hydrothermal process for biomass conversion, (d) evaluate the capability of hydrothermal treatment coupled with other technologies for producing novel chemicals, fuels and materials, (e) explore different sustainability assessments of hydrothermal processes for potential large-scale applications, and (f) offer our perspectives to facilitate the transition from a primarily petro-based to an alternative biobased society in the context of changing climate.

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Section: Coupling Of Hydrothermal Treatment With Other Technologiesmentioning

confidence: 99%

Hydrothermal Treatment of Biomass Feedstocks for Sustainable Production of Chemicals, Fuels, and Materials: Progress and Perspectives

et al. 2023

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“…For instance, due to their strong photoluminescence, carbon dots (CDs) (quasi‐spherical carbon nanoparticles with diameters less than 10 nm) and graphene quantum dots (GQDs) (small fragments of graphene with lateral dimensions smaller than 100 nm in a single or a few layers) have shown a great potential for fabricating biopolymer‐based devices and chemical sensors, and both (CDs and GQD) can be obtained from various waste, including FLW. [ 556–559 ] In this direction, the synthesis of CDs (Section 3.1.3) using leftovers from cat feedstock and the sandwich was reported [ 274,276 ] in which the N‐doped core and multifunctional groups on the surface of the CDs resulted in strong fluorescence and high quantum yield, 28% ( Figure 12 1 a). Moreover, Fe 3+ could quench the fluorescence of FLW‐driven CDs selectively, with no interference of other metal ions, indicating that FLW can indeed be a source of high‐value bioproducts to be used in optochemical sensors (Figure 12a) as well as in cell imaging (Figure 12b).…”

Section: Emerging Applications Of Flw Bioplasticsmentioning

confidence: 99%

“…Bread waste has been employed as starting material to produce high‐quality, single‐layer graphene, at a much lower price compared to standard commercial counterparts, [ 559 ] demonstrating a high potential to upcycle FLW into advanced nanomaterials for sensing application. However, not only pristine graphene can be obtained from FLW, but also graphene‐based composites.…”

Section: Emerging Applications Of Flw Bioplasticsmentioning

confidence: 99%

The Food–Materials Nexus: Next Generation Bioplastics and Advanced Materials from Agri‐Food Residues

et al. 2021

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The most recent strategies available for upcycling agri‐food losses and waste (FLW) into functional bioplastics and advanced materials are reviewed and the valorization of food residuals are put in perspective, adding to the water–food–energy nexus. Low value or underutilized biomass, biocolloids, water‐soluble biopolymers, polymerizable monomers, and nutrients are introduced as feasible building blocks for biotechnological conversion into bioplastics. The latter are demonstrated for their incorporation in multifunctional packaging, biomedical devices, sensors, actuators, and energy conversion and storage devices, contributing to the valorization efforts within the future circular bioeconomy. Strategies are introduced to effectively synthesize, deconstruct and reassemble or engineer FLW‐derived monomeric, polymeric, and colloidal building blocks. Multifunctional bioplastics are introduced considering the structural, chemical, physical as well as the accessibility of FLW precursors. Processing techniques are analyzed within the fields of polymer chemistry and physics. The prospects of FLW streams and biomass surplus, considering their availability, interactions with water and thermal stability, are critically discussed in a near‐future scenario that is expected to lead to next‐generation bioplastics and advanced materials.

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“…Food waste has also successfully been processed through (combined or separated) thermal and chemical treatments to produce GRMs by a number of research groups. Panahi-Kalamuei et al have reported the use of waste bread for the preparation of graphene and GQDs by means of a low temperature, two-step procedure [133]. The bread waste was first heated in deionized water at 70 • C-80 • C to produce a gel suspension, and then to 180 • C in an autoclave.…”

Section: Food Wastementioning

confidence: 99%

A review on sustainable production of graphene and related life cycle assessment

et al. 2021

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Advanced materials such as graphene and the family of 2-dimensional (2D) crystals are very attractive because of the myriad of applications that could be developed based on their outstanding properties. However, as soon as material development reaches enough maturity for production to be scaled up and to enter the market within products, it is crucial to place the technology in the context of possible risks to economic well-being, social equity and environmental harm. This review aims at highlighting the current state of art on sustainable development of graphene-based materials and related environmental impact assessment studies using life cycle assessment. We show that sustainable development has focused mostly on the use of waste or low cost materials as precursors. However, the findings from relevant life cycle assessment studies reveals the limits of this approach, which does not take into account that waste recycling is often very energy intensive. We provide an overview on the life cycle environmental impact assessment, with a focus of global warming potential and energy demand, carried out on different graphene productions methods for specific applications, ranging from composites to electronics. Finally, an outlook is given focussing on the comparison of the different production routes and the results from the life cycle assessment.

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Green hydrothermal synthesis of high quality single and few layers graphene sheets by bread waste as precursor

Cited by 33 publications

References 32 publications

Hydrothermal Treatment of Biomass Feedstocks for Sustainable Production of Chemicals, Fuels, and Materials: Progress and Perspectives

Hydrothermal Treatment of Biomass Feedstocks for Sustainable Production of Chemicals, Fuels, and Materials: Progress and Perspectives

The Food–Materials Nexus: Next Generation Bioplastics and Advanced Materials from Agri‐Food Residues

A review on sustainable production of graphene and related life cycle assessment

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