Catalysis with carbon nanoparticles

Testa, Caterina; Zammataro, Agatino; Pappalardo, Andrea; Sfrazzetto, Giuseppe Trusso

doi:10.1039/c9ra05689k

Cited by 52 publications

(27 citation statements)

References 26 publications

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“…Carbon nanoparticles are assembled from fragmented graphitic sheets where carbon atoms are sp 2bonded. [97] Dangling bonds are passivated with a wide range of hydrophilic, hydrophobic, and amphiphilic functional groups, depending on preparation conditions. [98][99][100][101] They are characterized by high stability, [102] good electrical conductivity, [103] heat conductivity, [104] low toxicity, [105] and environmental friendliness.…”

Section: Carbon Nanoparticlesmentioning

confidence: 99%

“…Carbon nanoparticles created through activation present a porous surface, creating a large surface area, which is ideal for chemical binding, enhanced reactions with a variety of species, as well as improved absorption functionality. [97,112] Increased porosity makes the surface of CNPs highly accessible to water molecules when contacted with moisture. The good conductivity facilitates the hoping of charged carriers and presents lower internal resistance when CNPs act as a power source connected to an external load.…”

Section: Carbon Nanoparticlesmentioning

confidence: 99%

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Moisture‐Enabled Electricity Generation: From Physics and Materials to Self‐Powered Applications

et al. 2020

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Ongoing efforts to develop this energy have led to the creation of a variety of novel technologies based on photovoltaic, [12,13] piezoelectric, [14,15] triboelectric, [16,17] and thermoelectric principles. [18,19] Devices based on these technologies are readily incorporated into self-powered, battery-free electronic systems. This also acts to eliminate the harm to the environment caused by the use of conventional batteries. [20,21] As recyclable resource, water is not only indispensable to life but also constitutes the largest energy carrier on Earth (Figure 1a). As 71% of the Earth's surface is covered by water and 35% of solar energy incident on the Earth is absorbed by water, petawatts of energy are received in this way. [22] As the water resource is clean and sustainable, the energy contained in even a small fraction of the water on Earth can meet the current global energy demand if this energy can be efficiently harvested. Terrestrial water exists in vapor and liquid form including moisture, rain, clouds, lakes, rivers, and oceans. It also forms the basis for biological systems. Even though there is a long history of electricity generation from running water, most technologies only utilize the gravitational and kinetic energy in liquid water. [23] Such systems are inherently incompatible with the development of self-powered devices. The development of nanomaterials has enabled technology for the extraction of electrical energy from moisture, leading to The exploration of the utilization of sustainable, green energy represents one way in which it is possible to ameliorate the growing threat of the global environmental issues and the crisis in energy. Moisture, which is ubiquitous on Earth, contains a vast reservoir of low-grade energy in the form of gaseous water molecules and water droplets. It has now been found that a number of functionalized materials can generate electricity directly from their interaction with moisture. This suggests that electrical energy can be harvested from atmospheric moisture and enables the creation of a new range of self-powered devices. Herein, the basic mechanisms of moisture-induced electricity generation are discussed, the recent advances in materials (including carbon nanoparticles, graphene materials, metal oxide nanomaterials, biofibers, and polymers) for harvesting electrical energy from moisture are summarized, and some strategies for improving energy conversion efficiency and output power in these devices are provided. The potential applications of moisture electrical generators in self-powered electronics, healthcare, security, information storage, artificial intelligence, and Internet-of-things are also discussed. Some remaining challenges are also considered, together with a number of suggestions for potential new developments of this emerging technology.

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Section: Carbon Nanoparticlesmentioning

confidence: 99%

Section: Carbon Nanoparticlesmentioning

confidence: 99%

Moisture‐Enabled Electricity Generation: From Physics and Materials to Self‐Powered Applications

et al. 2020

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“…Although there is considerable debate about the classification of CDs, they can be categorized into carbon quantum dots (CQDs) graphene quantum dots (GQDs), carbon nanodots (CNDs), and polymer dots (PDs) [ 62 ]. Two main synthesis routes, the top-down include arc discharge, laser ablation, electrochemical synthesis, nanometer etching, hydrothermal/solvothermal/special oxidation cleavage, and the bottom-up method involves combustion, pyrolysis, hydrothermal, solvothermal, and microwave assistant pyrolysis have been reported for the preparation of carbon dots[ 62 , 63 , 66 ].…”

Section: Nanomaterialsmentioning

confidence: 99%

Nanomaterial application in bio/sensors for the detection of infectious diseases

Sheikhzadeh

Beni

Zourob

2021

Talanta

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Infectious diseases are a potential risk for public health and the global economy. Fast and accurate detection of the pathogens that cause these infections is important to avoid the transmission of the diseases. Conventional methods for the detection of these microorganisms are time-consuming, costly, and not applicable for on-site monitoring. Biosensors can provide a fast, reliable, and point of care diagnostic. Nanomaterials, due to their outstanding electrical, chemical, and optical features, have become key players in the area of biosensors. This review will cover different nanomaterials that employed in electrochemical, optical, and instrumental biosensors for infectious disease diagnosis and how these contributed to enhancing the sensitivity and rapidity of the various sensing platforms. Examples of nanomaterial synthesis methods as well as a comprehensive description of their properties are explained. Moreover, when available, comparative data, in the presence and absence of the nanomaterials, have been reported to further highlight how the usage of nanomaterials enhances the performances of the sensor.

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“…Several species belong to the CDs family: graphene quantum dots [ 11 ], carbon nanotubes [ 12 , 13 ], fullerenes [ 14 ], polymer dots [ 15 ] and carbon nanodots (CNDs) [ 16 , 17 ]. In particular, CNDs can be further divided into carbon quantum dots (CQDs) and carbon nanoparticles (CNPs) [ 18 ]. Both CQDs and CNPs are spherically shaped though CQDs have a crystal lattice; in contrast, CNPs do not show any crystal lattice [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Coffee Grounds-Derived CNPs for Efficient Cr(VI) Water Remediation

et al. 2021

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Carbon nanomaterials are a group of materials characterized by sp2/sp3 carbon backbone which, combined with surface atoms and/or chemical groups, ensures peculiar physical chemical features for a wide range of applications. Among these materials, carbon dots and carbon nanoparticles belong to carbon nanomaterials with a few nanometer dimensions. In this work, carbon nanoparticles were produced from spent coffee grounds as sustainable carbon source through a simple, cheap and eco-friendly procedure according to an oxidation process (at controlled temperature) driven by hydrogen peroxide. Atomic Force Microscope (AFM) and fluorescence, UV-Vis absorption, FT-IR and Raman spectroscopy were used to assess the formation of carbon nanomaterials of about 10 nm with the typical emission and absorption properties of carbon dots and peculiar surface features. In fact, the presence of heteroatoms, i.e., phosphorus, and the carbonyl/carboxyl surface groups on carbon nanoparticles, was proposed to confer peculiar properties allowing the fast Mn(VII) reduction to Mn(II) at neutral pH and the Cr(VI) reduction to Cr(III) in weak acid aqueous media.

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Catalysis with carbon nanoparticles

Abstract: Carbon nanoparticles represent a new class of nanocatalysts able to catalyze different reactions. This review collects the catalytic applications of these nanoparticles.

Cited by 52 publications

References 26 publications

Moisture‐Enabled Electricity Generation: From Physics and Materials to Self‐Powered Applications

Moisture‐Enabled Electricity Generation: From Physics and Materials to Self‐Powered Applications

Nanomaterial application in bio/sensors for the detection of infectious diseases

Coffee Grounds-Derived CNPs for Efficient Cr(VI) Water Remediation

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