A Stiffness‐Switchable, Biomimetic Smart Material Enabled by Supramolecular Reconfiguration DOI
Dawei Zhao, Bo Pang, Ying Zhu

et al.

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(10)

Published: Dec. 29, 2021

In nature, stiffness-changing behavior is essential for living organisms, which, however, challenging to achieve in synthetic materials. Here, a smart material, through developing interchangeable supramolecular configurations inspired from the dermis of sea cucumber, which shows extreme, switchable mechanical properties, reported. hydrated state, possessing stretched, double-stranded network, showcases soft-gel with low stiffness and high pliability. Upon stimulation ethanol transform into coiled configuration, it self-adjusts hard state nearly 500-times enhanced 0.51 243.6 MPa, outstanding load-bearing capability (over 35 000 times its own weight), excellent puncture/impact resistance specific impact strength ≈116 kJ m-2 (g cm-3 )-1 (higher than some metals alloys such as aluminum, even comparable commercially available protective materials D3O Kevlar). Moreover, this material demonstrates reconfiguration-dependent self-healing designable formability, holding great promise advanced engineering fields that require both high-strength durability good formability. This work may open up new perspective development self-regulating supramolecular-scale configuration regulation.

Language: Английский

Developing fibrillated cellulose as a sustainable technological material DOI
Tian Li, Chaoji Chen, Alexandra H. Brozena

et al.

Nature, Journal Year: 2021, Volume and Issue: 590(7844), P. 47 - 56

Published: Feb. 3, 2021

Language: Английский

Citations

1194
Metal–Organic Framework-Based Hierarchically Porous Materials: Synthesis and Applications DOI
Guorui Cai, Yan Peng, Liangliang Zhang

et al.

Chemical Reviews, Journal Year: 2021, Volume and Issue: 121(20), P. 12278 - 12326

Published: July 19, 2021

Metal-organic frameworks (MOFs) have been widely recognized as one of the most fascinating classes materials from science and engineering perspectives, benefiting their high porosity well-defined tailored structures components at atomic level. Although intrinsic micropores endow size-selective capability surface area, etc., narrow pores limit applications toward diffusion-control large-size species involved processes. In recent years, construction hierarchically porous MOFs (HP-MOFs), MOF-based composites, derivatives has captured widespread interest to extend conventional materials. this Review, advances in design, synthesis, functional are summarized. Their structural characters various applications, including catalysis, gas storage separation, air filtration, sewage treatment, sensing energy storage, demonstrated with typical reports. The comparison HP-MOFs traditional (e.g., zeolite, silica, carbons, metal oxides, polymers), subsisting challenges, well future directions research field, also indicated.

Language: Английский

Citations

1104
A strong, biodegradable and recyclable lignocellulosic bioplastic DOI

Qinqin Xia,

Chaoji Chen, Yonggang Yao

et al.

Nature Sustainability, Journal Year: 2021, Volume and Issue: 4(7), P. 627 - 635

Published: March 25, 2021

Language: Английский

Citations

519
Nanocellulose: Recent Fundamental Advances and Emerging Biological and Biomimicking Applications DOI Creative Commons
Katja Heise, Eero Kontturi, Yagut Allahverdiyeva

et al.

Advanced Materials, Journal Year: 2020, Volume and Issue: 33(3)

Published: Dec. 2, 2020

Abstract In the effort toward sustainable advanced functional materials, nanocelluloses have attracted extensive recent attention. Nanocelluloses range from rod‐like highly crystalline cellulose nanocrystals to longer and more entangled nanofibers, earlier denoted also as microfibrillated celluloses bacterial cellulose. years, they spurred research a wide of applications, ranging nanocomposites, viscosity modifiers, films, barrier layers, fibers, structural color, gels, aerogels foams, energy until filtering membranes, name few. Still, continue show surprisingly high challenges master their interactions tailorability allow well‐controlled assemblies for materials. Rather than trying review already nanocellulose literature at large, here selected aspects progress are focus. Water interactions, which central processing properties, discussed first. Then hybrid gels (multi)stimuli responses, shape‐memory self‐healing, adhesion gluing, biological scaffolding, forensic applications discussed. Finally, composite fibers discussed, well strategy improvement photosynthesis‐based chemicals production. summary, perspectives new directions high‐tech materials science based on described.

Language: Английский

Citations

329
Salt Mitigation Strategies of Solar‐Driven Interfacial Desalination DOI

Keyuan Xu,

Chengbing Wang, Zhengtong Li

et al.

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 31(8)

Published: Nov. 10, 2020

Abstract Solar‐driven interfacial desalination (SDID), which is based on localized heating and evaporation, provides an opportunity for developing environmentally friendly cost‐effective seawater thermal desalination. However, rapidly generated steam may cause salt to accumulate the evaporator's surface block channel of evaporation. Salt accumulation inevitably reduces light absorption service period solar absorber, resulting in a significant decrease evaporation efficiency over time. makes it difficult produce SDID devices with high energy long‐term stability large‐scale use remote poverty‐stricken areas. Therefore, exploration novel effective strategies addressing through both material design structural engineering has attracted more attention recent years. This review presents overview state‐of‐the‐art advancements salt‐resistant photothermal discusses critical issues achieving mitigation SDID, focusing classification configurations, basic mechanism mitigation, architectural materials. Finally, important challenges prospects are discussed providing meaningful roadmap efficient SDID.

Language: Английский

Citations

312
Scalable aesthetic transparent wood for energy efficient buildings DOI Creative Commons
Ruiyu Mi, Chaoji Chen, Tobias Keplinger

et al.

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: July 31, 2020

Abstract Nowadays, energy-saving building materials are important for reducing indoor energy consumption by enabling better thermal insulation, promoting effective sunlight harvesting and offering comfortable lighting. Here, we demonstrate a novel scalable aesthetic transparent wood (called hereafter) with combined features (e.g. intact patterns), excellent optical properties (an average transmittance of ~ 80% haze 93%), good UV-blocking ability, low conductivity (0.24 W m −1 K ) based on process spatially selective delignification epoxy infiltration. Moreover, the rapid fabrication mechanical robustness (a high longitudinal tensile strength 91.95 MPa toughness 2.73 MJ −3 facilitate scale-up capability (320 mm × 170 0.6 mm) while saving large amounts time energy. The holds great potential in energy-efficient applications, such as glass ceilings, rooftops, decorations, panels.

Language: Английский

Citations

260
Lightweight, strong, moldable wood via cell wall engineering as a sustainable structural material DOI
Shaoliang Xiao, Chaoji Chen,

Qinqin Xia

et al.

Science, Journal Year: 2021, Volume and Issue: 374(6566), P. 465 - 471

Published: Oct. 22, 2021

Turning wood into honeycombs Wood is an attractive material for structural applications, but it usually works best as boards or sheets. Xiao et al . have developed a process engineering hardwood that allows these sheets to be manipulated complex structures (see the Perspective by Tajvidi and Gardner). The key manipulate cell wall structure shrinking blasting open fibers vessels drying “water-shocking” them. This creates window wherein can without ripping tearing. Honeycomb, corrugated, other are locked in once dries. —BG

Language: Английский

Citations

256
Molecular insights into the complex mechanics of plant epidermal cell walls DOI
Yao Zhang, Jingyi Yu, Xuan Wang

et al.

Science, Journal Year: 2021, Volume and Issue: 372(6543), P. 706 - 711

Published: May 13, 2021

Plants have evolved complex nanofibril-based cell walls to meet diverse biological and physical constraints. How strength extensibility emerge from the nanoscale-to-mesoscale organization of growing has long been unresolved. We sought clarify mechanical roles cellulose matrix polysaccharides by developing a coarse-grained model based on polymer physics that recapitulates aspects assembly tensile mechanics epidermal walls. Simple noncovalent binding interactions in generate bundled networks resembling primary possessing stress-dependent elasticity, stiffening, plasticity beyond yield threshold. Plasticity originates fibril-fibril sliding aligned networks. This provides quantitative insight into fundamental questions plant mechanobiology reveals design principles biomaterials combine stiffness with yielding extensibility.

Language: Английский

Citations

222
Hierarchically Hollow Microfibers as a Scalable and Effective Thermal Insulating Cooler for Buildings DOI
Hongmei Zhong, Yanan Li, Peng Zhang

et al.

ACS Nano, Journal Year: 2021, Volume and Issue: 15(6), P. 10076 - 10083

Published: May 20, 2021

Daytime passive radiative cooling is a promising electricity-free pathway for terrestrial buildings. Current research interest in this strategy mainly lies tailoring the optical spectra of materials strong thermal emission and high solar reflection. However, environmental heat gain poses crucial challenge to building at subambient temperatures. Herein, we devise scalable insulating cooler (TIC) consisting hierarchically hollow microfibers as envelope that simultaneously achieves daytime insulation reduce gain. The TIC demonstrates efficient reflection (94%) long-wave infrared (94%), yielding temperature drop about 9 °C under sunlight 900 W/m2. Notably, conductivity lower than air, thus preventing flow from external environments indoor space summer, an additional benefit does not sacrifice performance. A energy simulation shows 48.5% could be saved if widely deployed China.

Language: Английский

Citations

208
Advanced and versatile lignin-derived biodegradable composite film materials toward a sustainable world DOI Creative Commons
Han-Min Wang, Tong‐Qi Yuan, Guoyong Song

et al.

Green Chemistry, Journal Year: 2021, Volume and Issue: 23(11), P. 3790 - 3817

Published: Jan. 1, 2021

This review summarizes the recent advances in fabrication strategies and versatile applications of lignin-derived biodegradable film materials from viewpoint sustainable development.

Language: Английский

Citations

204