A multilevel gradient structural carbon derived from naturally preprocessed biomass

Wang, Chao; Wang, Hanwei; Yang, Caixia; Dang, Baokang; Li, Caicai; Zhang, Jiayi

doi:10.1016/j.carbon.2020.07.020

Cited by 58 publications

(32 citation statements)

References 33 publications

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“…The nitrogen adsorption‐desorption isotherm, surface area distribution and pore volume distribution of functional biochar prepared in CO 2 atmosphere are shown in Figure 3 (a). All the prepared MSCs exhibited a sharp increase in N 2 adsorption capacity at P/P 0 <0.01 and an obvious hysteresis line at 0.4<P/P 0 <0.95, indicating a large number of micropores and mesopores [31] . The occurrence of such hysteresis curves is based on the narrow crack holes of the material, which is consistent with the SEM morphology image of the sample, showing that the MSCs have hierarchical porous structures.…”

Section: Resultssupporting

confidence: 83%

Preparation of Nitrogen and Sulfur Co‐doped and Interconnected Hierarchical Porous Biochar by Pyrolysis of Mantis Shrimp in CO₂ Atmosphere for Symmetric Supercapacitors

et al. 2021

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A porous functional biochar (MSCs) rich in N and S heteroatom doping was prepared by pyrolyzing mantis shrimp shells as the biomass source of the typical processing seafood waste in CO2 atmosphere. The physical and chemical properties of carbon materials were adjusted by the control of the pyrolysis temperature. In this study, maximum specific surface area (SSA) and pore volume of 484.5 m2 g−1 and 0.291 cm3 g−1, respectively of the MSCs material were reached at 700 °C. Moreover, it was found in the characterization test that heteroatoms, such as N and S were successfully introduced into the carbon microstructure. MSC‐750 contains N of up to 9.46 % and 0.52 % of S. Although its SSA is only 431.6 m2 g−1, the specific capacitance of the 6 M KOH symmetrical supercapacitor at 1 A g−1 reaches the maximum value of 144.2 F g−1 among all samples due to the pseudocapacitance generated by its high content of heteroatomic functional groups.

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Section: Resultssupporting

confidence: 83%

Preparation of Nitrogen and Sulfur Co‐doped and Interconnected Hierarchical Porous Biochar by Pyrolysis of Mantis Shrimp in CO₂ Atmosphere for Symmetric Supercapacitors

et al. 2021

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“…Since the interface evaporation system with only solar absorber materials often shows poor hydrophilicity, high thermal conductivity, and a chaotic internal structure, which are not conducive to the precise localization of heat and the rapid escape of steam. Therefore, they are used for efficient solar steam generation by combining with porous materials (e.g., polystyrene and melamine foam) , with hydrophilicity and low thermal conductivity. However, the application of foam has caused more environmental pollution while improving the conversion efficiency.…”

Section: Introductionmentioning

confidence: 99%

Wood-Based Solar Interface Evaporation Device with Self-Desalting and High Antibacterial Activity for Efficient Solar Steam Generation

Yang

Chen

Jia

et al. 2020

ACS Appl. Mater. Interfaces

172

108

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The main challenges of a solar steam generation device based on biomass materials are complicated processing techniques and relatively low efficiency. To solve these problems, we reported a simple immersion treatment method by depositing polydopamine (PDA) and silver nanoparticles (AgNPs) on natural wood to prepare a novel solar interface evaporation device. Ag-PDA@wood exhibits a unique bilayer structure. The absorbance of the top light absorption layer is higher than 96% in a wide wavelength range (300−2500 nm). Owing to the synergistic photothermal effect between PDA and AgNPs, Ag-PDA@ wood has ultrafast solar−thermal response (a temperature increase of 42.5 °C within 5 min under 1 sun), and more heat is located at the steam generation interface (the surface temperature is 45.1 °C). The natural wood layer at the bottom with low thermal conductivity provides sufficient water supply and reduces the bulk heat loss. A high evaporation rate of 1.58 kg m −2 h −1 is achieved using Ag-PDA@wood under 1 sun (1 kW m −2 ). Its evaporation efficiency reaches 88.6%. The results upon sewage treatment and seawater desalination indicate that Ag-PDA@wood has an excellent purification ability and self-desalting capacity. More importantly, when compared to traditional solar evaporators, Ag-PDA@wood exhibits high antibacterial activity. The result of this antibacterial experiment shows that this material almost completely kills harmful bacteria. Therefore, Ag-PDA@wood has a high application potential in seawater desalination and sewage purification, providing a significant incentive to solve the problem of insufficient freshwater supply.

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“…54 The high-resolution spectra of the C 1s 37 and N 1s 55 regions are fitted individually (Figure S4), the specific analysis is seen in Supporting Information. 20,56 The element composition of GCNs can be tuned easily by changing the carbonization temperature, which may play an important role on controlling ultimate MA performance.…”

Section: Resultsmentioning

confidence: 99%

Protein-Derived Hybrid Carbon Nanospheres with Tunable Microwave Absorbing Performance in the X-Band

Zhu

et al. 2021

ACS Appl. Electron. Mater.

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Biomass-derived carbon absorbents are gaining increasing interest owing to their renewability, simple preparation, and unique electrical properties. However, the uncontrollability of both the composition and the morphology of the natural biomass precursor leads to inevitably poor reproducibility of the microwave absorbing (MA) performance for practical application. In this study, protein-derived hybrid carbon nanospheres (GCNs) were successfully synthesized using gelatin molecules as precursor units, and then they were mixed into resin to prepare composites with excellent MA properties. By tuning the carbonization temperature, both the crystallization degree and the elementary composition of the GCNs absorbents could be conveniently adjusted to balance various microwave attenuation mechanisms. The developed GCNs/resin composites exhibited a minimum reflection loss of −50.9 dB and effective absorption bandwidth of 3.5 GHz in the X-band. The excellent MA properties of the GCNs with tailored geometrical morphology and tunable composition provided a new inspiration for future development on biomass carbon-based microwave absorbing materials.

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A multilevel gradient structural carbon derived from naturally preprocessed biomass

Cited by 58 publications

References 33 publications

Preparation of Nitrogen and Sulfur Co‐doped and Interconnected Hierarchical Porous Biochar by Pyrolysis of Mantis Shrimp in CO₂ Atmosphere for Symmetric Supercapacitors

Preparation of Nitrogen and Sulfur Co‐doped and Interconnected Hierarchical Porous Biochar by Pyrolysis of Mantis Shrimp in CO₂ Atmosphere for Symmetric Supercapacitors

Wood-Based Solar Interface Evaporation Device with Self-Desalting and High Antibacterial Activity for Efficient Solar Steam Generation

Protein-Derived Hybrid Carbon Nanospheres with Tunable Microwave Absorbing Performance in the X-Band

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A multilevel gradient structural carbon derived from naturally preprocessed biomass

Cited by 58 publications

References 33 publications

Preparation of Nitrogen and Sulfur Co‐doped and Interconnected Hierarchical Porous Biochar by Pyrolysis of Mantis Shrimp in CO2 Atmosphere for Symmetric Supercapacitors

Preparation of Nitrogen and Sulfur Co‐doped and Interconnected Hierarchical Porous Biochar by Pyrolysis of Mantis Shrimp in CO2 Atmosphere for Symmetric Supercapacitors

Wood-Based Solar Interface Evaporation Device with Self-Desalting and High Antibacterial Activity for Efficient Solar Steam Generation

Protein-Derived Hybrid Carbon Nanospheres with Tunable Microwave Absorbing Performance in the X-Band

Contact Info

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Preparation of Nitrogen and Sulfur Co‐doped and Interconnected Hierarchical Porous Biochar by Pyrolysis of Mantis Shrimp in CO₂ Atmosphere for Symmetric Supercapacitors

Preparation of Nitrogen and Sulfur Co‐doped and Interconnected Hierarchical Porous Biochar by Pyrolysis of Mantis Shrimp in CO₂ Atmosphere for Symmetric Supercapacitors