Nanomechanics of low-dimensional materials for functional applications

Fan, Shumin; Feng, Xiaobin; Han, Ying; Fan, Zhengjie; Lü, Yang

doi:10.1039/c9nh00118b

Cited by 33 publications

(18 citation statements)

References 71 publications

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“…In contrast to the widely used polar dielectric materials, 2D materials are the other class of potential photonic materials for radiative cooling applications because of their unique optical, thermal, and mechanical properties compared with the bulk materials. [ 93,94 ] Graphene, showing surface plasmon resonances in the middle IR range, can be used to construct perfect absorption under critical coupling conditions. [ 95–97 ] Boron nitride(BN), supporting phonon polaritons in middle IR range, is also a promising candidate considering their ultralow absorption in solar spectra and highly thermal conductivity.…”

Section: Discussionmentioning

confidence: 99%

Photonics Empowered Passive Radiative Cooling

Zhang

Chu

Cai

et al. 2021

Advanced Photonics Research

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Passive radiative cooling has recently received renewed interest because of its unprecedented capabilities in cooling terrestrial objects below ambient air temperature without external energy consumption and greenhouse gas emission. This technology has been demonstrated as promising as replacements/complements of conventional compressed air‐based active cooling systems, which can significantly impact the global energy landscape by providing a green and efficient cooling way. The key to this success is judiciously designed photonic micro/nanostructures, which simultaneously reflect solar irradiation and emit thermal infrared emission across the atmospheric transparency window 8–13 μm. Herein, an introduction of the fundamental principles of passive radiative cooling is given, discussing the critical factors associated with the net cooling power of radiative cooling. Following this, the recently emerged photonic materials and structures (e.g., multilayer thin films, micro/nanoparticles, photonic crystals, metamaterials, metasurfaces, etc.) that facilitate radiative cooling are reviewed and fruitfully analyzed and discussed. Some possible scale‐up manufacturing ways toward the practical deployment of this energy‐efficient technology in real‐world applications are then discussed. The potential applications are also summarized and envisioned. Finally, perspectives on the future development in conjunction with artificial intelligent design of photonic structures and materials are presented and discussed.

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Section: Discussionmentioning

confidence: 99%

Photonics Empowered Passive Radiative Cooling

Zhang

Chu

Cai

et al. 2021

Advanced Photonics Research

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“…[140] For example, Huo et al [141] studied a simple and effective method for preparing functionalized natural BN quantum dots (BNQDs) with blue fluorescence by hydrothermally treating a mixture of boric acid and melamine at 200°C for 15 h. The obtained BNQDs can be easily dispersed in an aqueous medium and used as a fluorescent probe for detecting Fe 3 + with remarkable selectivity and sensitivity. Lian et al [140] used H 3…”

Section: Hydrothermal (Solvothermal) Methodsmentioning

confidence: 99%

“…have a significant quantum effect due to the size of nanometer scale in at least one dimension. [1][2][3][4][5][6] These nanomaterials exhibit unique structures and excellent properties, which have unparalleled advantages over traditional materials in many fields. [7][8][9][10][11][12][13] Since the discovery of CNTs in the 1990s, great efforts have been made toward developing low-dimensional materials.…”

Section: Introductionmentioning

confidence: 99%

“…[27,28] The atomic layer spacing of h-BN is 0.333 nm, which is very close to the atomic layer spacing of graphite (0.334 nm), and the color of h-BN is white, so it is known as "white graphite". [29] The hardness of c-BN is only inferior to diamond, [30] B and N atoms are hybridized by sp 3 , and the bonding mode between atoms in the crystal is covalent bond. [31] When the layered structure of h-BN presents a regular inclined stacking, r-BN is formed and the hybridization mode is unchanged.…”

Section: Introductionmentioning

confidence: 99%

“…Low‐dimensional nanomaterials (such as fullerenes, carbon nanotubes (CNTs), graphene, molybdenum disulfide, boron nitride (BN), diamond, etc.) have a significant quantum effect due to the size of nanometer scale in at least one dimension [1–6] . These nanomaterials exhibit unique structures and excellent properties, which have unparalleled advantages over traditional materials in many fields [7–13] .…”

Section: Introductionmentioning

confidence: 99%

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The Properties and Preparation Methods of Different Boron Nitride Nanostructures and Applications of Related Nanocomposites

Pan

Liu

et al. 2020

The Chemical Record

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Due to special non-metallic polar bond between the III group (with certain metallic properties) element boron (B) and the V group element nitrogen (N), boron nitride (BN) has unique physical and chemical properties such as strong high-temperature resistance, oxidation resistance, heat conduction, electrical insulation and neutron absorption. Its unique lamellar, reticular and tubular morphologies and physicochemical properties make it attractive in the fields of adsorption, catalysis, hydrogen storage, thermal conduction, insulation, dielectric substrate of electronic devices, radiation protection, polymer composites, medicine, etc. Therefore, the synthesis and properties of BN derived materials become the main research hotspots of lowdimensional nanomaterials. This paper reviews the synthetic methods, overall properties, and applications of BN nanostructures and nanocomposites. In addition, challenges and prospect of this kind of materials are discussed.

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Application of Lignin‐Derived Graphene Quantum Dots in Visible Light‐Driven Photoelectrochemical Photodetector

Wang

Zhang

et al. 2023

Advanced Optical Materials

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demonstrated that the optical absorption of GQDs could be regulated from the ultraviolet to infrared region. [3] This merit has been recognized as a promising substitution for the traditional low dimensional nanomaterials and widely applied in various fields like photodetectors, [3a] hydrogen evolution/CO 2 reduction, [4] organic lightemitting diodes, [3b] and bioimaging. [5] For example, Tetsuka et al. reported the diaminonaphthalene-functionalized GQDs/ graphene hybrid that was coated onto the boron nitride nanosheets, which could present high photoresponsivity up to 8.0 × 10 9 Jones through ultraviolet (UV) to infrared region. [3a] GQDs/TiO 2 nanocomposites had been prepared and applied to efficiently catalyze the generation of H 2 from H 2 O or CO from the H 2 O-CO 2 mixture under solar irradiation. [4] However, there are still some emerging issues that should be solved before the further development of GQDs, such as the use of unrenewable carbon sources, the lack of functional groups, and the controversial photoluminescence mechanism. [2a,b] Recently, the top-down production of GQDs from lowcost and renewable biomass resources has drawn great attention owing to the growing demand for green and sustainable development. [6] Among them, lignin is a naturally abundant aromatic macromolecule with >30% higher energy density than that of most polysaccharide biopolymers. [7] As is known to all, lignin is primarily composed of syringyl, guaiacyl, and p-hydroxyphenyl substructures, which is similar to GQDs in structure as the latter are usually regarded as giant polyaromatic molecules. [8] Besides, lignin has the merits of broadband UV adsorption, [9] fluorescent aggregation-induced emission, [10] and strong free radical scavenging, [11] which shows great potential in various applications. Vast attempts have been made to transform lignin-containing feedstocks into products with specific molecular weights, sizes, or/and shapes. [12] In general, bulky lignin is extracted from biomass in the conventional pulping and biorefinery industries and yielded as a by-product with low value and limited applications. Benefiting from its ongoing downstream processing, a hotspot, related to collectively realizing the linkage cleavage and functionalization of lignin, is well documented. [12e,13] All these merits can ease the fabrication route and introduce the heteroatom(s) for producing biocompatible GQDs from lignin on a large scale. To Graphene quantum dots are the latest addition to the low-dimensional nanomaterial family, which have drawn growing attention due to their unique physiochemical properties and potential applications in many fields. However, their practical application is hindered by the high fabrication cost and environmental concerns regarding unsustainable carbon sources and routes. This work demonstrates a universal approach to fabricate various heteroatom(s) doped lignin-derived graphene quantum dots (LGQDs) for utilization in the photoelectrochemical-type photodetectors (PDs). The results indicate that LG...

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Nanomechanics of low-dimensional materials for functional applications

Abstract: When materials’ characteristic dimensions are reduced to the nanoscale regime, their mechanical properties will vary significantly to that of their bulk counterparts.

Cited by 33 publications

References 71 publications

Photonics Empowered Passive Radiative Cooling

Photonics Empowered Passive Radiative Cooling

The Properties and Preparation Methods of Different Boron Nitride Nanostructures and Applications of Related Nanocomposites

Application of Lignin‐Derived Graphene Quantum Dots in Visible Light‐Driven Photoelectrochemical Photodetector

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