Nanocomposites for Environmental and Energy Applications

Goh, Pei Sean; Ismail, Ahmad Fauzi

doi:10.3390/nano11020345

Cited by 9 publications

(7 citation statements)

References 9 publications

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“…Nanoconfinement of active hydride species inside a porous host bears a number of physical and chemical implications [1,7,8,22,25,27,41,[52][53][54][55][56][59][60][61][62].…”

Section: Physical and Chemical Aspects Of Nanoconfinement Effectsmentioning

confidence: 99%

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Recent Development in Nanoconfined Hydrides for Energy Storage

Comănescu

2022

IJMS

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Hydrogen is the ultimate vector for a carbon-free, sustainable green-energy. While being the most promising candidate to serve this purpose, hydrogen inherits a series of characteristics making it particularly difficult to handle, store, transport and use in a safe manner. The researchers’ attention has thus shifted to storing hydrogen in its more manageable forms: the light metal hydrides and related derivatives (ammonia-borane, tetrahydridoborates/borohydrides, tetrahydridoaluminates/alanates or reactive hydride composites). Even then, the thermodynamic and kinetic behavior faces either too high energy barriers or sluggish kinetics (or both), and an efficient tool to overcome these issues is through nanoconfinement. Nanoconfined energy storage materials are the current state-of-the-art approach regarding hydrogen storage field, and the current review aims to summarize the most recent progress in this intriguing field. The latest reviews concerning H2 production and storage are discussed, and the shift from bulk to nanomaterials is described in the context of physical and chemical aspects of nanoconfinement effects in the obtained nanocomposites. The types of hosts used for hydrogen materials are divided in classes of substances, the mean of hydride inclusion in said hosts and the classes of hydrogen storage materials are presented with their most recent trends and future prospects.

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“…Nanoconfinement of active hydride species inside a porous host bears a number of physical and chemical implications [1,7,8,22,25,27,41,[52][53][54][55][56][59][60][61][62].…”

Section: Physical and Chemical Aspects Of Nanoconfinement Effectsmentioning

confidence: 99%

“…The proper term for describing the materials resulting from the nanoconfinement of active hydride source into a nanoporous matrix is nanocomposite [4,41,52,54,60,66,[68][69][70]77,78].…”

Section: Nanocompositesmentioning

confidence: 99%

Recent Development in Nanoconfined Hydrides for Energy Storage

Comănescu

2022

IJMS

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“…Currently, the emergence of functional NMs and their innovative properties have gained attention as potential alternatives for environmental applications. The production of a broad range of nanocomposites has opened an unprecedent technological opportunity for a variety of applications, including adsorption, over the conventional use of these materials [ 89 ]. The use of immobilized NMs in adsorption processes includes the conjugation of NPs and support characteristics for a correct adsorptive performance.…”

Section: Immobilized Nms For Adsorption Processesmentioning

confidence: 99%

Immobilized Nanomaterials for Environmental Applications

Cervantes

Ramírez-Montoya

2022

Molecules

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Nanomaterials (NMs) have been extensively used in several environmental applications; however, their widespread dissemination at full scale is hindered by difficulties keeping them active in engineered systems. Thus, several strategies to immobilize NMs for their environmental utilization have been established and are described in the present review, emphasizing their role in the production of renewable energies, the removal of priority pollutants, as well as greenhouse gases, from industrial streams, by both biological and physicochemical processes. The challenges to optimize the application of immobilized NMs and the relevant research topics to consider in future research are also presented to encourage the scientific community to respond to current needs.

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“…Inspired by the unique physical properties of carbon nanotubes (NCTs), such as their excellent mechanical strength and chemical stability, light weight, and high thermal conductivity [ 4 , 5 ], researchers have taken advantage of the physical and chemical properties of CNTs in biomedical applications. The hydrophobicity-induced aggregation of CNTs, on the other hand, prevents their applications for such purposes.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular Self-Assembly of Dipalmitoylphosphatidylcholine and Carbon Nanotubes: A Dissipative Particle Dynamics Simulation Study

2022

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Dissipative particle dynamics simulations were performed to investigate the self-assembly of dipalmitoylphosphatidylcholine (DPPC) as a model lipid membrane on the surface of carbon nanotubes (CNTs). The influence of surface curvature of CNTs on self-assembly was investigated by performing simulations on solutions of DPPC in water in contact with CNTs of different diameters: CNT (10, 10), CNT (14, 14), CNT (20, 20), and CNT (34, 34). DPPC solutions with a wide range of concentrations were chosen to allow for formation of lipid structures of various surface densities, ranging from a submonolayer to a well-organized monolayer and a CNT covered with a lipid monolayer immersed in a planar lipid bilayer. Our results are indicative of a sequence of phase-ordering processes for DPPC on the surface of CNTs. At low surface coverages, the majority of hydrocarbon tail groups of DPPC are in contact with the CNT surface. Increasing the surface coverage leads to the formation of hemimicellar aggregates, and at high surface coverages close to the saturation limit, an organized lipid monolayer self-assembles. An examination of the mechanism of self-assembly reveals a two-step mechanism. The first step involves densification of DPPC on the CNT surface. Here, the lipid molecules do not adopt the order of the target phase (lipid monolayer on the CNT surface). In the second step, when the lipid density on the CNT surface is above a threshold value (close to saturation), the lipid molecules reorient themselves to form an organized monolayer around the tube. Here, the DPPC molecules adopt stretched conformations normal to the surface, the end hydrocarbon groups adsorb on the surface, and the head groups occupy the outermost part of the monolayer. The saturation density and the degree of lipid ordering on the CNT surface depend on the surface curvature. The saturation density increases with increased surface curvature, and better-ordered structures are formed on less curved surfaces.

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Nanocomposites for Environmental and Energy Applications

Abstract: Global environmental and energy issues are the two major challenges of the 21st century [...]

Cited by 9 publications

References 9 publications

Recent Development in Nanoconfined Hydrides for Energy Storage

Recent Development in Nanoconfined Hydrides for Energy Storage

Immobilized Nanomaterials for Environmental Applications

Supramolecular Self-Assembly of Dipalmitoylphosphatidylcholine and Carbon Nanotubes: A Dissipative Particle Dynamics Simulation Study

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