Probing the structure–activity relationship of a novel artificial cellobiose hydrolase

He, Xingxing; Zhang, Fuyuan; Zhang, Lin; Zhang, Qiang; Fang, Guozhen; Liu, Jifeng; Wang, Shuo; Zhang, Shuqiu

doi:10.1039/c7tb01426k

Cited by 42 publications

(34 citation statements)

References 48 publications

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“…Liu, Wang and co-workers demonstrated that assemblies of seven-residue peptides facilitate hydrolysis of cellobiose, a glucose dimer connected by a β-1,4-glycosidic bond. 129 Peptide PC5 (Ac-FEFEAEA-CONH 2 ) showing the highest activity under optimal conditions (pH 3.0, 25 °C) does not contain histidine residues, thus cellobiose hydrolysis must proceed via an alternative mechanism.…”

Section: Self-assembled Peptide Catalysts Forming Large Oligomersmentioning

confidence: 99%

Catalytic peptide assemblies

2018

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Self-assembly of molecules often results in new emerging properties. Even very short peptides can self-assemble into structures with a variety of physical and structural characteristics. Remarkably, many peptide assemblies show high catalytic activity in model reactions reaching efficiencies comparable to those found in natural enzymes by weight. In this review, we discuss different strategies used to rationally develop self-assembled peptide catalysts with natural and unnatural backbones as well as with metal-containing cofactors.

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Section: Self-assembled Peptide Catalysts Forming Large Oligomersmentioning

confidence: 99%

Catalytic peptide assemblies

2018

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“…Lee and their groups [165] reported the produce of the activated multichannel carbon nanofiber (a-MCNF) via a simple single-nozzle co-electrospinning technique, carbonization and KOH activation process as sulfur accommodation. Figure 20 illustrates all steps of preparing the sulfur-embedded activated multichannel carbon nanofibers (S-a-MCNF).…”

Section: Carbon Nanofibersmentioning

confidence: 99%

“…Illustration of the sequential fabrication steps for the sulfurembedded activated multichannel carbon nanofibers (S-a-MCNF). [165] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 carbon fiber can provide an effective conductive network for sulfur, and the abundant porous structure of carbon fiber can facilitate transport of electrolyte and Li ions, accommodate volume expansion of cathode, and inhibit severe shuttle effect during the charge/discharge process. Among porous carbons, graphene, carbon nanotubes and carbon nanofibers, the porous carbons as sulfur hosts are the most attractive for LSBs because the porous carbons with abundant porous structures can confine polysulfides, thus minimizing shuttle effect during the charge/discharge process.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Review of Carbon Materials for Lithium‐Sulfur Batteries

et al. 2018

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Lithium‐sulfur battery as one of the most promising and attractive candidate among the emerging electrical energy storage has attracted enormous attentions. It has superior characteristics of high specific energy density (2600 Wh kg−1) and high theoretical specific capacity (1675 mAh g−1), which is equal to 3–5 times of lithium‐ion batteries, and more closed to the requirement of the pure electric vehicles and hybrid electric vehicles. Furthermore, sulfur element is inexpensive, naturally abundant, and environmentally friendly. However, the commercial application of lithium‐sulfur batteries (LSBs) still faces some major technical obstacles such as the low electrical conductivity of sulfur, the shuttle effect of polysulfides, and the drastic volume expansion during charge/discharge process. In this review paper, we focus on some of the effective strategies in boosting the electrochemical performance of LSBs through the development of sulfur/carbon composite electrode materials, including the use of porous carbons, carbon nanotubes/fibers, and graphene. The integration of carbon materials and sulfur can efficiently improve the utilization of active materials, enhance the conductivity of cathode materials, and provide a polysulfides barrier. Simultaneously, the challenges and prospects on LSBs in the near future are also presented and discussed.

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“…To solve the above issues, one of the most efficient efforts is to encapsulate sulfur cathodes with rational designs of carbonaceous matrixes, such as micro/mesoporous carbons, porous hollow carbon nanospheres, carbon nanofibers/nanotubes, and graphene . Among them, hollow carbon spheres (HCSs) have received much research interest by virtue of several advantages: (1) the unique hollow structure for hosting large amount of sulfur; (2) the large interior void space fraction for accommodating the large volume change; (3) sufficient contact area with the electrolyte for rapid electrolyte permeation and ion transport.…”

Section: Introductionmentioning

confidence: 99%

Double‐Shelled Phosphorus and Nitrogen Codoped Carbon Nanospheres as Efficient Polysulfide Mediator for High‐Performance Lithium–Sulfur Batteries

et al. 2018

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Lithium–sulfur batteries are regarded as very promising energy storage devices due to their high energy density, low cost, and environmental friendliness; however, their insulating properties and the instability of sulfur‐based electrodes impede the practical applications of Li–S batteries. Here, a versatile strategy to synthesize double‐shelled nitrogen and phosphorus codoped carbon spheres (NPDSCS) as an efficient sulfur host for Li–S batteries is reported. With strong trapping, good affinity, high adsorption for polysulfides, and the bifunctional catalyzing for sulfur redox processes, the developed NPDSCS cathodes with a high S loading of 72.4% exhibit large specific discharge capacity of 1326 mAh g−1 at 0.1C, high Coulombic efficiency, good rate capability, and excellent cycling performance with a reversible capacity of 814 mAh g−1 at 1C after 500 cycles.

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Probing the structure–activity relationship of a novel artificial cellobiose hydrolase

Cited by 42 publications

References 48 publications

Catalytic peptide assemblies

Catalytic peptide assemblies

Review of Carbon Materials for Lithium‐Sulfur Batteries

Double‐Shelled Phosphorus and Nitrogen Codoped Carbon Nanospheres as Efficient Polysulfide Mediator for High‐Performance Lithium–Sulfur Batteries

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