Graphene-based porous nanohybrid architectures for adsorptive and photocatalytic abatement of volatile organic compounds

Bilal, Muhammad; Rahdar, Abbas; Badran, Mohamed; Iqbal, Hafiz M.N.

doi:10.1016/j.envpol.2022.119805

Cited by 29 publications

(6 citation statements)

References 109 publications

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“…The hydrophobic pollutants or nonpolar groups can easily interact with the nonpolar end of the N-GA via π–π interactions. Moreover, the polar gaseous molecules can interact with N-GA via hydrophilic and electrostatic interactions due to the presence of N in the graphene framework and surficial functional groups. , The surface of N-GA contains hydroxyl, carbonyl, carboxyl, and amino groups, which play a critical role for the surface adsorption of polar TGCs/VOCs by providing a platform for hydrogen bonding with them. , Hydrogen chloride, ammonia, DCM, THF, and acetonitrile exhibit weak interaction with N-GA, which resulted in low adsorption . The TGCs/VOCs with aromatic backbone, such as toluene and benzene are having π cloud, which can easily interact with π cloud of N-GA and, in turn, resulted in the adsorption of benzene derivatives over N-GA via π–π interactions .…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the polar gaseous molecules can interact with N-GA via hydrophilic and electrostatic interactions due to the presence of N in the graphene framework and surficial functional groups. 43,44 The surface of N-GA contains hydroxyl, carbonyl, carboxyl, and amino groups, which play a critical role for the surface adsorption of polar TGCs/VOCs by providing a platform for hydrogen bonding with them. 45,46 Hydrogen chloride, ammonia, DCM, THF, and acetonitrile exhibit weak interaction with N-GA, which resulted in low adsorption.…”

Section: Adsorptive Removal Of Tgcsmentioning

confidence: 99%

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Removal of Anthropogenic Toxic Gaseous Compounds from Indoor using Biomass-based Graphene Aerogels

Das,

Raju,

Dhiman

et al. 2024

ACS Eng. Au

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The efficient capture of HCHO, tobacco smoke, and anthropogenic toxic pollutants is of paramount importance to mitigate indoor air pollution and protect the general population. Ultralight N-doped graphene aerogel (N-GA) with a three-dimensional (3D) honeycomb-like coarse-pore structure is synthesized from biomass (pear). By taking advantage of the micrometer-sized honeycomb pores, 3D interconnected porous structure, hierarchical pores, large pore volume (0.81 cm3 g–1), highly accessible surface area (1582 m2 g–1), and heteroatom-enriched (1.89% of N and 9.88% of O) nature, the N-GA offered high adsorption of the toxic gaseous compounds (TGCs). The as-synthesized N-GA without any further chemical/physical treatment exhibits an excellent adsorption-based capture of TGCs such as HCHO (996.7 mg g–1), ethanol (611 mg g–1), tobacco smoke (523.8 mg g–1), benzene (482.3 mg g–1), toluene (392 mg g–1), and carbon dioxide (365.3 mg g–1). Moreover, N-GA, as a low-cost and renewable adsorbent, exhibits high recyclability and long-term adsorption efficiency. These results demonstrate the potential of N-GA as an unprecedented candidate to design high-performance adsorbents for TGCs, suggesting a great application potential in air filters to control both indoor and outdoor air pollution.

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Section: Resultsmentioning

confidence: 99%

Section: Adsorptive Removal Of Tgcsmentioning

confidence: 99%

Removal of Anthropogenic Toxic Gaseous Compounds from Indoor using Biomass-based Graphene Aerogels

Das,

Raju,

Dhiman

et al. 2024

ACS Eng. Au

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“…The potential double function of these aerogels for both the adsorption of pollutants and their catalytic decomposition is of great interest, opening the way for even more complex applications involving the abatement of harmful species. [204,205] Androulidakis et al reported an improved water vapor adsorption for the hybrid material, compared to rGO by itself. [201] This observation is correlated to the increase in the hydrophilicity of the hybrid material due to the addition of hexagonal boron nitride.…”

Section: Indoor Environmental Controlmentioning

confidence: 99%

Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

Galvagno,

Tartaglia,

Stratigaki

et al. 2024

Adv Funct Materials

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Cultural heritage faces recurring degradation processes and natural aging phenomena, demanding the envisioning of innovative preservation solutions inspired by cutting‐edge scientific research. Over extended time frames, current preservation strategies often prove inadequate in preserving the different constituent materials of cultural assets, which are thus threatened by their inherent fragility and by the complex interactions with the surrounding environment. The distinctive properties of graphene and graphene‐related materials (GRMs) now offer unexplored opportunities in the field of cultural heritage, addressing various forms of deterioration phenomena. This work critically analyzes early‐stage literature on the use of graphene and GRMs. Strengths, weaknesses, and limitations in anti‐corrosion, anti‐fading, and consolidation properties of graphene and GRMs are thoroughly investigated, along with their possible applications in smart sensors to monitor the state of health of endangered artifacts. The aim is to elucidate how specific characteristics of graphene and GRMs can be applied to the conservation, diagnostics, and monitoring of artistic and archaeological assets. Future perspectives in the design of stable, long‐lasting, and compatible graphene‐based solutions for cultural heritage protection are highlighted, providing a detailed discussion on potentials and pitfalls.

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“…When it is discharged into the water, it can cause the water body to become darker, increase the chemical oxygen demand (COD) concentration, and reduce its self-purification ability. 10 At the same time, it also has certain biological toxicity, which affects the photosynthesis of organisms. 11 Therefore, it is urgent to find a safe and fast method for sewage pollution treatment.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Similarly, methyl orange (MO) is a commonly used acid–base indicator and also an azo dye. When it is discharged into the water, it can cause the water body to become darker, increase the chemical oxygen demand (COD) concentration, and reduce its self-purification ability . At the same time, it also has certain biological toxicity, which affects the photosynthesis of organisms .…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Polylactic Acid Electrospun Fibers Grafted with Polyethyleneimine for Highly Efficient Methyl Orange and Cr(VI) Removal

Deng

et al. 2023

Langmuir

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The rapid growth of industrialization has resulted in the release of large quantities of pollutants into the environment, especially dyes and heavy metals, which are environmentally hazardous for humans and animals. It is considered as the most promising and environmentally friendly route to develop green materials by using the green modification method, which has no negative impact on the environment. In this work, the green material of polylactic acid (PLA) was used as the substrate material, and a novel modification method of polydopamine (PDA)-assisted polyethyleneimine (PEI) grafting was developed. The electrospun PLA fibers are mainly composed of stereocomplex crystallites, which were achieved via the electrospinning of poly(l-lactic acid) and poly(d-lactic acid). The water-soluble PEI was grafted onto the PDA-modified PLA fibers through the glutaraldehyde-assisted cross-linking reaction. The prepared composite fibers can be degraded, which is environmentally friendly and meets the requirements of sustainable development. The potential application of such PLA composite fibers in wastewater treatment was intensively evaluated. The results show that at appropriate fabrication conditions (PDA concentration of 3 g·L–1 and a PEI molecular weight of 70,000 g·mol–1), the composite fibers exhibit the maximum adsorption capacities of 612 and 398.41 mg·g–1 for methyl orange (MO) and hexavalent chromium [Cr(VI)], respectively. Simultaneously, about 64.79% of Cr(VI) adsorbed on the composite fibers was reduced to Cr(III). The above results show that the PLA composite fibers have a good development prospect in the field of wastewater treatment.

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Graphene-based porous nanohybrid architectures for adsorptive and photocatalytic abatement of volatile organic compounds

Cited by 29 publications

References 109 publications

Removal of Anthropogenic Toxic Gaseous Compounds from Indoor using Biomass-based Graphene Aerogels

Removal of Anthropogenic Toxic Gaseous Compounds from Indoor using Biomass-based Graphene Aerogels

Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

Biomimetic Polylactic Acid Electrospun Fibers Grafted with Polyethyleneimine for Highly Efficient Methyl Orange and Cr(VI) Removal

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