Wood‐Based Nanotechnologies toward Sustainability

Jiang, Feng; Tian, Liangliang; Li, Yiju; Zhang, Ying; Gong, Amy; Dai, Jiaqi; Hitz, Emily; Luo, Wei

doi:10.1002/adma.201703453

Cited by 378 publications

(248 citation statements)

References 238 publications

Supporting

Mentioning

242

Contrasting

Unclassified

Order By: Relevance

“…Here, we chose commercialized cellulose paper (CP) as the matrix, which consists of disordered wood cellulose microfibers separated by large air voids (≈3 µm) [ 24 ] (Figures S3 and S4, Supporting Information). There are also plenty of nanogaps (≈10 nm) between the crystalline nanofibrils, [ 25,26 ] providing nanoconfined spaces for particle growth (Figure 1a). To reveal these nanogaps, we stained the pristine CP with heavy metal elements (tungsten and uranium) for transmission electron microscopy (TEM) imaging.…”

Section: Figurementioning

confidence: 99%

A Scalable Nickel–Cellulose Hybrid Metamaterial with Broadband Light Absorption for Efficient Solar Distillation

Yang

Dong

et al. 2020

Advanced Materials

View full text Add to dashboard Cite

absorbers have aroused great attention due to their resonant absorption and localized heating effect. [7][8][9] Nevertheless, this resonant absorption inherently features a narrow bandwidth, which is usually advantageous for applications such as biosensors [10] and resonant energy transfer, [11] but disadvantageous for broadband light absorption. [12,13] Some complex and delicate plasmonic metastructures were thus designed to hybridize proximate surface plasmons [12] or to support multiple resonances [13] in order to broaden the absorption bandwidth. However, the noble metals (i.e., Au and Ag) for plasmonic absorption along with the complicated fabrication procedures are undesirable for large-scale and full-spectrum (300-2500 nm) solar energy harvesting. [14] Zhou et al. creatively fabricated an all-aluminum hybrid plasmonic membrane, which was lowcost and enabled efficient broadband solar absorption. [15] The broadband plasmonic absorber was based on closely packed Al nanoparticles along the side walls of nanopores to induce a plasmon hybridization effect and high-density plasmonic resonances. [15] Among the several mechanisms that cause light absorption in metals, [16] interband transitions (IBTs) are single-electron excitations [17] from occupied levels in one band to unoccupied levels in another band, [18] in contrast to the collectively coherent excitation of electrons for plasmonic absorption. [19] IBTs intrinsically have a broadband attribute because photons the energy of which surpasses the interband threshold of a metal can excite IBTs. This makes IBTs very suitable for full-spectrum solar energy utilization, especially when massive IBTs over the entire solar spectrum can be supported by some transition metals (e.g., Ni, Pd, and Pt) with a high density of electronic states (DOS) near their Fermi levels. [20][21][22] In this work, we designed a Ni-cellulose hybrid metamaterial (NCM) that employs IBTs as the dominant optical absorption mechanism over the entire solar spectrum (Figures S1 and S2, and Note S1 for the detailed demonstration, Supporting Information). Nickel supports strong IBTs in very low energy regions (≈0.5 eV), which greatly increase optical absorption in the near-infrared spectrum compared to plasmonic metals (Au, Ag, and Cu). We densely embedded Ni nanoparticles into the nanogaps of cellulose microfibers via a seed-mediated and nanoconfined growth. This nanoconfinement effect can inhibit Sophisticated metastructures are usually required to broaden the inherently narrowband plasmonic absorption of light for applications such as solar desalination, photodetection, and thermoelectrics. Here, nonresonant nickel nanoparticles (diameters < 20 nm) are embedded into cellulose microfibers via a nanoconfinement effect, producing an intrinsically broadband metamaterial with 97.1% solar-weighted absorption. Interband transitions rather than plasmonic resonance dominate the optical absorption throughout the solar spectrum due to a high density of electronic states near the Fermi level of nickel. Fiel...

show abstract

Section: Figurementioning

confidence: 99%

A Scalable Nickel–Cellulose Hybrid Metamaterial with Broadband Light Absorption for Efficient Solar Distillation

Yang

Dong

et al. 2020

Advanced Materials

View full text Add to dashboard Cite

show abstract

“…[ 14,19,20 ] Natural wood also contains ≈40–45% cellulose. [ 21–23 ] Cellulose fibers have diverse morphologies. Microcellulose fibers from wood and plants have an average diameter of ≈10–50 µm and a length of 1–3 mm, with a hierarchical structure comprised of nanofibrillated cellulose of an average diameter of ≈1.5–5 nm and the length can be in micrometer scale.…”

Section: Introductionmentioning

confidence: 99%

All‐Natural, Degradable, Rolled‐Up Straws Based on Cellulose Micro‐ and Nano‐Hybrid Fibers

Wang

Pang

Chen

et al. 2020

Adv Funct Materials

Self Cite

125

101

View full text Add to dashboard Cite

Among all the plastic pollution, straws have brought particularly intricate problems since they are single use, consumed in a large volume, cannot be recycled in most places, and can never be fully degraded. To solve this problem, replacements for plastic straws are being developed following with the global trend of plastic straw bans. Nevertheless, none of the available degradable alternatives are satisfactory due to drawbacks including poor natural degradability, high cost, low mechanical performance, and poor water stability. Here, all-natural degradable straws are designed by hybridizing cellulose nanofibers and microfibers in a binder-free manner. Straws are fabricated by rolling up the wet hybrid film and sealed by the internal hydrogen bonding formed among the cellulose fibers after drying. The cellulose hybrid straws show exceptional behaviors including 1) excellent mechanical performance (high tensile strength of ≈70 MPa and high ductility with a fracture strain of 12.7%), 2) sufficient hydrostability (10× wet mechanical strength compared to commercial paper straw), 3) low cost, and 4) high natural degradability. Given the low-cost raw materials, the binder-free hybrid design based on cellulose structure can potentially be a suitable solution to solve the environmental challenges brought by the enormous usage of plastics straws.

show abstract

“…With the addition of optical transmittance to basic wood properties, transparent wood facilitates wood anatomy studies, and it can be used in light‐transmitting smart buildings, electronic devices, and in photonic devices such as photovoltaic cells and light source . Several works also briefly discussed the transparent wood as a part of functionalized wood when reviewing the wood nanotechnologies . In the present study, recent progress and related challenges about transparent wood are summarized in detail, as well as mechanisms of importance to optical properties.…”

Section: Introductionmentioning

confidence: 96%

Optically Transparent Wood: Recent Progress, Opportunities, and Challenges

Vasileva

Sychugov

et al. 2018

Advanced Optical Materials

146

105

View full text Add to dashboard Cite

Transparent wood is an emerging load‐bearing material reinvented from natural wood scaffolds with added light management functionalities. Such material shows promising properties for buildings and related structural applications, including its renewable and abundant origin, interesting optical properties, outstanding mechanical performance, low density, low thermal conductivity, and great potential for multifunctionalization. In this study, a detailed summary of recent progress on the transparent wood research topic is presented. Remaining questions and challenges related to transparent wood preparation, optical property measurements, and transparent wood modification and applications are discussed.

show abstract

Wood‐Based Nanotechnologies toward Sustainability

Cited by 378 publications

References 238 publications

A Scalable Nickel–Cellulose Hybrid Metamaterial with Broadband Light Absorption for Efficient Solar Distillation

A Scalable Nickel–Cellulose Hybrid Metamaterial with Broadband Light Absorption for Efficient Solar Distillation

All‐Natural, Degradable, Rolled‐Up Straws Based on Cellulose Micro‐ and Nano‐Hybrid Fibers

Optically Transparent Wood: Recent Progress, Opportunities, and Challenges

Contact Info

Product

Resources

About