Sol–Gel Synthesis of Metal–Phenolic Coordination Spheres and Their Derived Carbon Composites

Wei, Jing; Wang, Gen; Chen, Feng; Bai, Min; Liang, Yan; Wang, Huanting; Zhao, Dongyuan; Zhao, Yongxi

doi:10.1002/anie.201805781

Cited by 147 publications

(87 citation statements)

References 58 publications

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“…Abundant phenol groups on the TA molecules tend to bond with atomically distributed Ni‐ions via a metal‐phenolic coordination reaction. [ 16–19 ] The Ni 2+ ‐TA coordinative complex promotes the graphitization of TA, even under relatively low temperatures. As a result, the unprecedented nanostructured graphite, possessing multiorientations, was achieved with each edge of the graphite domain exposed outward.…”

Section: Figurementioning

confidence: 99%

Atomic‐Distributed Coordination State of Metal‐Phenolic Compounds Enabled Low Temperature Graphitization for High‐Performance Multioriented Graphite Anode

Shin

Kim

Nam

et al. 2020

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The synthesis of nanostructured carbon materials with a highly ordered graphitic structure is of great interest because of their unique physico-chemical properties, including high electrical conductivity and chemical stability for multipurpose applications in current industries. [1-3] The current synthetic process for a highly ordered graphitic structure from carbonaceous materials requires an energy intensive process, including heating at extremely high temperatures (>2000 °C). [4,5] Furthermore, most amorphous carbon and organic molecules are classified into nongraphitizable carbon precursors, whereas only a few precursors, which can be organized into a grain with a local molecular orientation (LMO), form a highly ordered graphitic structure. [6,7] Therefore, the formation of highly ordered graphitic structures derived from non-graphitizable precursors using readily available synthetic methods has been a challenge. Recently, metal-catalyst-assisted graphitization has been attempted to prepare graphitic carbon structures through heat treatment at relatively low temperatures. [8-12] It was recently found out that the hollow carbon shells can be obtained by the direct thermal conversion of a Ni-based metal organic framework (MOF) at 1000 °C. [13] Xia et al. reported that a graphitic carbon nanocage was synthesized by the spray pyrolysis of iron carbonyl at 900 °C. [14] Although it was claimed that the carbon nanocage has well-developed graphitic layers along with a unique microstructure, the resulting materials only exhibited short-range order, thereby hindering the genuine role of functional graphite. Unlike previous approaches, Bin et al. prepared nanostructured graphite by heating Ketjen black to 2800 °C, which imparted additional functionalities to graphite. [15] Temperatures higher than 2000 °C are believed to be essential to realize graphitization from several graphitizable precursors. [4,5] This paper introduces a novel and sustainable method to synthesize 3D graphite nanoballs (GNBs) by the low-temperature pyrolysis of a non-graphitizable precursor, tannic acid (TA). This is the first report of metal-phenolic coordination compounds with which low-temperature graphitization can be done in one-pot synthesis. Abundant phenol groups on the TA molecules tend to bond with atomically distributed Ni-ions via a metal-phenolic coordination reaction. [16-19] The Ni 2+-TA Continuous efforts have been made to achieve nanostructured carbon materials with highly ordered graphitic structures using facile synthetic methods. 3D graphite nanoballs (GNBs) are synthesized by the lowtemperature pyrolysis of a non-graphitizable precursor, tannic acid (TA). Abundant phenol groups on TA bind to Ni 2+ to form metal-phenolic coordination, which renders each Ni cation to be atomically distributed by the TA ligands. Even at low temperatures (1000 °C), highly ordered graphitic structure is promoted by the distributed Ni nanoparticles that act as a graphitization catalyzer. The crystallinity of the GNB is fully corroborated by the inten...

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Section: Figurementioning

confidence: 99%

Atomic‐Distributed Coordination State of Metal‐Phenolic Compounds Enabled Low Temperature Graphitization for High‐Performance Multioriented Graphite Anode

Shin

Kim

Nam

et al. 2020

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“…Recently, phenolic compounds, which are widely found in plants, have been explored as potential glue molecules for engineering high‐performance functional materials via various sacrificial bonding interactions, including metal coordination, hydrogen bonds, and hydrophobic interaction . Phenolic compounds have a strong chelating ability with metal ions to form metal‐phenolic coordination bonds that endow metal‐phenolic materials with improved overall mechanical properties .…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Mineral–Organic Bone Adhesives for Stable Fracture Fixation and Accelerated Bone Regeneration

Bai

Zhang

et al. 2019

Adv Funct Materials

153

147

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The use of hydrogel-based bone adhesives has the potential to revolutionize the clinical treatment of bone repairs. However, severe deficiencies remain in current products, including cytotoxicity concerns, inappropriate mechanical strength, and poor fixation performance in wet biological environments. Inspired by the unique roles of glue molecules in the robust mechanical strength and fracture resistance of bone, a design strategy is proposed using novel mineral-organic bone adhesives for strong water-resistant fixation and guided bone tissue regeneration. The system leveraged tannic acid (TA) as a phenolic glue molecule to spontaneously co-assemble with silk fibroin (SF) and hydroxyapatite (HA) in order to fabricate the inorganic-organic hybrid hydrogel (named SF@TA@HA). The combination of the strong affinity between SF and TA along with sacrificial coordination bonds between TA and HA significantly improves the toughness and adhesion strength of the hydrogel by increasing the amount of energy dissipation at the nanoscale. This in turn facilitated adequate and stable fixation of bone fracture in wet biological environments. Furthermore, SF@TA@HA promotes the regeneration of bone defects at an early stage in vivo. This work presents a type of bioinspired bone adhesive that is able to provide stable fracture fixation and accelerated bone regeneration during the bone remodeling process.

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“…[14] The sol-gel synthesis of metal-tannic acid coordination colloidal spheres and carbon composites similarly contain the pre-crosslinking of tannic acid by formaldehyde in the alkaline ethanol/water solvents resulted in the formation of oligomers, and the aggregation assembly of polyphenol oligomers via metal-ligand crosslinking grew into the coordination colloidal spheres (Figure 24c). [126] Some biomolecules with large molecular weight can aggregate into nanoparticles without polymerization. Acetylated lignin (ACL) colloidal spheres in tetrahydrofuran (THF) were obtained by gradual hydrophobic aggregation of ACL molecules via the addition of water into the ACL-THF solution (Figure 25).…”

Section: Biomass-based Pcssmentioning

confidence: 99%

“…Reproduced with permission. [126] Copyright 2018, Wiley-VCH. over other colloidal spheres; the introduction of active metal sites and specific functional groups into biomass colloidal carbons can significantly extend their applications in emerging fields.…”

Section: Biomass-based Pcssmentioning

confidence: 99%

Tailoring Polymer Colloids Derived Porous Carbon Spheres Based on Specific Chemical Reactions

et al. 2020

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Porous carbon spheres derived from polymer colloids with regular geometry, monodispersed morphology, well-controlled contents and structures play important roles in many areas of application, such as energy storage/conversion, gas adsorption/separation, catalysis, and chemo-photothermal therapy. Suitable polymerization reaction and synthetic strategy are both critical for the obtainment of stable polymer colloids as carbon precursors. Basic polymerization reactions are the cornerstones of synthetic strategies, which directly provides the direct molecular-based design of functionalized polymer/ carbon spheres. Thus, this progress report mainly focuses on the summary of suitable polymerization reactions for colloidal polymer derived porous carbon spheres. Recent advances in the synthetic strategies and applications are also discussed, including their corresponding polymerization reactions. Finally, the perspectives for the development of polymer derived porous carbon spheres are provided based on the controlled synthesis of polymer colloids and optimization over the carbonization process to achieve highly functionalized carbon spheres for practical applications. 2002475 (2 of 21) www.advmat.de www.advancedsciencenews.com Sheng Dai obtained his B.Sc. degree (1984) and M.Sc. degree (1986) in chemistry from Zhejiang University, Hangzhou, China, and his Ph.D.

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Sol–Gel Synthesis of Metal–Phenolic Coordination Spheres and Their Derived Carbon Composites

Cited by 147 publications

References 58 publications

Atomic‐Distributed Coordination State of Metal‐Phenolic Compounds Enabled Low Temperature Graphitization for High‐Performance Multioriented Graphite Anode

Atomic‐Distributed Coordination State of Metal‐Phenolic Compounds Enabled Low Temperature Graphitization for High‐Performance Multioriented Graphite Anode

Bioinspired Mineral–Organic Bone Adhesives for Stable Fracture Fixation and Accelerated Bone Regeneration

Tailoring Polymer Colloids Derived Porous Carbon Spheres Based on Specific Chemical Reactions

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