Thermodynamics at the nanoscale: A new approach to the investigation of unique physicochemical properties of nanomaterials

Yang, Chun Cheng; Mai, Yiu‐Wing

doi:10.1016/j.mser.2014.02.001

Cited by 151 publications

(64 citation statements)

References 453 publications

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“…By combining Equations 13 and 14, we obtain the same scaling law, E g E g;1 ¼ 2 À T m T m;1 , as previously obtain when expressing the energy bandgap as E g ¼ ΔH cv À TΔS cv [64][65][66]. On Figure 4, the validity of the scaling law is illustrated on CdS nanoparticles.…”

Section: Energy Bandgap Of Npssupporting

confidence: 65%

Advances in thermodynamic modelling of nanoparticles

Guisbiers

2019

Advances in Physics: X

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Among all the computational techniques (Density Functional Theory, Molecular Dynamics, Monte-Carlo Simulations, Nanothermodynamics) used to investigate the properties of nanoparticles, nanothermodynamics is the most unusual one. Indeed, most people still thing that thermodynamics does not apply at the nanoscale; nonetheless, thermodynamic concepts can still be applied at the nanoscale to predict various properties of nanoparticles like melting temperature, energy bandgap . . . In this review, we first introduce the fundamental concepts and methods of nanothermodynamics starting from Hill's contributions to the most recent developments focusing specifically on the relationship between the material property and the following parameters as quantum statistics (Fermi-Dirac or Bose-Einstein), size and shape of the nanoparticle. ARTICLE HISTORY

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Section: Energy Bandgap Of Npssupporting

confidence: 65%

Advances in thermodynamic modelling of nanoparticles

Guisbiers

2019

Advances in Physics: X

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“…It is clear from Figure 2 that the bulk selenium pellet is amorphous at room temperature and then undergoes a structural phase transition (amorphous-trigonal) around 90°C. It is well known that melting and structural phase transitions are size-dependent(41, 42). Therefore, Eq.…”

Section: Resultsmentioning

confidence: 99%

Inhibition of Candida albicans biofilm by pure selenium nanoparticles synthesized by pulsed laser ablation in liquids

Guisbiers

Lara

Mendoza‐Cruz

et al. 2017

Nanomedicine: Nanotechnology, Biology and Medicine

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Selenoproteins play an important role in the human body by accomplishing essential biological functions like oxido-reductions, antioxidant defense, thyroid hormone metabolism and immune response; therefore, the possibility to synthesize selenium nanoparticles free of any contaminants is exciting for future nano-medical applications. This paper reports the first synthesis of selenium nanoparticles by femtosecond pulsed laser ablation in de-ionized water. Those pure nanoparticles have been successfully used to inhibit the formation of Candida albicans biofilms. Advanced electron microscopy images showed that selenium nanoparticles easily adhere on the biofilm, then penetrate into the pathogen, and consequently damage the cell structure by substituting with sulfur. 50% inhibition of Candida albicans biofilm was obtained at only 25 ppm. Finally, the two physical parameters proved to affect strongly the viability of Candida albicans are the crystallinity and particle size.

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“…Nanomaterials are a class of materials whose dimensions lie in the range of nanoscale. As the size of materials/grains approaches to nanoscale dimensions, its physical and chemical characteristics differ significantly from that of bulk materials . It is caused due to interactions between atoms, anions with deficiencies, cations with valence states, anisotropy, and high surface/volume ratio .…”

Section: Introductionmentioning

confidence: 99%

A review on spectral converting nanomaterials as a photoanode layer in dye‐sensitized solar cells with implementation in energy storage devices

et al. 2020

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The present review article aims at the application of rare-earth-based titanium dioxide nanocrystals as spectral converters in photovoltaic devices, with special focus on dye-sensitized solar cells (DSSCs). Additionally, the implementation of DSSCs in energy storage, more importantly, DSSCs and lithium-ion batteries (LIB) integrated devices are systematically described. The absorption in DSSCs is mainly confined to the visible solar spectrum, which is one of the main reasons behind its limited power conversion efficiency. This has led to shifting of research focus on broadening the light absorption range of DSSCs, which can further lead to enhancement in overall power conversion efficiency. TiO 2 , doped with rare-earth (RE) ions, is often used as an electron transport layer (ETL) in DSSCs to overcome this absorption-related issue. This article gives a detailed review of TiO 2 doped with different RE ions, as an electron transport layer in DSSCs. More importantly, we have summarized all the recent important findings with the application of DSSCs in LIB and photocapacitors. K E Y W O R D S DSSCs, efficiency, electron transport layer, energy storage, photovoltaics, rare-earth 1 | OBJECTIVES • The main objective of this review article is to provide an overview of TiO 2 -based photoanode layer used in dye-sensitized solar cells (DSSCs).

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Thermodynamics at the nanoscale: A new approach to the investigation of unique physicochemical properties of nanomaterials

Cited by 151 publications

References 453 publications

Advances in thermodynamic modelling of nanoparticles

Advances in thermodynamic modelling of nanoparticles

Inhibition of Candida albicans biofilm by pure selenium nanoparticles synthesized by pulsed laser ablation in liquids

A review on spectral converting nanomaterials as a photoanode layer in dye‐sensitized solar cells with implementation in energy storage devices

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