Implanting N-doped CQDs into rGO aerogels with diversified applications in microwave absorption and wastewater treatment

Qiu, Jun-Feng; Liao, Jun; Wang, Guohui; Du, Rongxiao; Tsidaeva, Natalia; Wang, Wei

doi:10.1016/j.cej.2022.136475

Cited by 90 publications

(20 citation statements)

References 66 publications

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Section: Resultsmentioning

confidence: 99%

“…The ID/IG of GO was 1.01, and the ID/IG of BO/CQDs/rGO-10 was 1.02, showing the ratio increased after recombination, indicating that BO/CQDs/rGO-10 had a high oxidation level and a low graphitization degree, which proved that GO was reduced to rGO in the solvothermal process. 13 The optical properties of the obtained samples were investigated by UV-Vis diffuse reflectance spectroscopy (DRS). The spectra of pure Bi 2 O 3 and BO/CQDs/rGO are shown in Fig.…”

Section: Materials Characterizationmentioning

confidence: 99%

“…12 In view of the advantages of CQDs and rGO, more and more researchers have started to use CQDs and rGO to jointly modify photocatalysts. 13–16 On the one hand, the excellent conductivity of CQDs and rGO could effectively promote the separation and transmission of photogenerated carriers and improve the charge-separation efficiency and injection efficiency. 17–19 On the other hand, rGO could significantly improve the adsorption of antibiotics on a photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of a ternary Bi₂O₃/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride

Long

et al. 2022

Phys. Chem. Chem. Phys.

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Section: Resultsmentioning

confidence: 99%

Section: Materials Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis of a ternary Bi₂O₃/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride

Long

et al. 2022

Phys. Chem. Chem. Phys.

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“…The performance comparison about EAB and filler content of this work to other reported rGO-based aerogels has been given in Fig. 3h [23,[44][45][46][47][48][49][50]. Most of reported works had higher filler contents or smaller EAB.…”

Section: Microwave Absorption Performancementioning

confidence: 68%

Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels

et al. 2022

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Developing ultrabroad radar-infrared compatible stealth materials has turned into a research hotspot, which is still a problem to be solved. Herein, the copper sulfide wrapped by reduced graphene oxide to obtain three-dimensional (3D) porous network composite aerogels (CuS@rGO) were synthesized via thermal reduction ways (hydrothermal, ascorbic acid reduction) and freeze-drying strategy. It was discovered that the phase components (rGO and CuS phases) and micro/nano structure (microporous and nanosheet) were well-modified by modulating the additive amounts of CuS and changing the reduction ways, which resulted in the variation of the pore structure, defects, complex permittivity, microwave absorption, radar cross section (RCS) reduction value and infrared (IR) emissivity. Notably, the obtained CuS@rGO aerogels with a single dielectric loss type can achieve an ultrabroad bandwidth of 8.44 GHz at 2.8 mm with the low filler content of 6 wt% by a hydrothermal method. Besides, the composite aerogel via the ascorbic acid reduction realizes the minimum reflection loss (RLmin) of − 60.3 dB with the lower filler content of 2 wt%. The RCS reduction value can reach 53.3 dB m2, which effectively reduces the probability of the target being detected by the radar detector. Furthermore, the laminated porous architecture and multicomponent endowed composite aerogels with thermal insulation and IR stealth versatility. Thus, this work offers a facile method to design and develop porous rGO-based composite aerogel absorbers with radar-IR compatible stealth.

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“…This leads to the fact that the data on the analysis of materials do not correspond to the actual performance. Therefore, the Debye theory is not applicable to our system, and the free-electron theory is used to analyze the electromagnetic parameters in our work , (detailed analysis is provided in the Supporting Information). Figure a,b shows the real permittivity (ε′) and the imaginary permittivity (ε″) of CNT nanoframeworks, with the loading ratio of 10 wt % in the range of 2–18 GHz.…”

Section: Resultsmentioning

confidence: 99%

Carbon Nanotubes with Tailored Amorphous Graphitic Components for Electromagnetic Wave Absorption

Han

Ouyang

et al. 2022

ACS Appl. Nano Mater.

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Carbon nanoframeworks have received considerable attention in electromagnetic wave absorption (EWA), benefiting from their low mass density, cost effectiveness, environmental friendliness, and strong mechanical strength. Although various works have been performed to achieve carbon nanostructures with favorable electromagnetic behavior, the mechanism behind the application is still ambiguous, typically the effect of amorphous and graphitic components on the EWA performances. Accordingly, we modulate carbon nanotubes with a controllable amorphous–graphitic ratio based on a facile carbonization strategy. With the increased processing temperature, CNTs show increased graphitic formation simultaneously with the removal of amorphous carbon. Meanwhile, the N-containing groups are also converted from defective N toward graphitic N. The optimum performance is achieved with a strong reflection loss (−61.25 dB) and broad bandwidth (6.24 GHz) at 700 °C. Simulation is further applied to demonstrate the effects of CNTs with different amorphous–graphitic ratios. Such work elucidates the impact mechanism of amorphous and graphitic carbon on the electromagnetic behavior, resulting in the scalable application of carbon materials.

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Implanting N-doped CQDs into rGO aerogels with diversified applications in microwave absorption and wastewater treatment

Cited by 90 publications

References 66 publications

Synthesis of a ternary Bi₂O₃/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride

Synthesis of a ternary Bi₂O₃/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride

Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels

Carbon Nanotubes with Tailored Amorphous Graphitic Components for Electromagnetic Wave Absorption

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Implanting N-doped CQDs into rGO aerogels with diversified applications in microwave absorption and wastewater treatment

Cited by 90 publications

References 66 publications

Synthesis of a ternary Bi2O3/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride

Synthesis of a ternary Bi2O3/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride

Ultrabroad Microwave Absorption Ability and Infrared Stealth Property of Nano-Micro CuS@rGO Lightweight Aerogels

Carbon Nanotubes with Tailored Amorphous Graphitic Components for Electromagnetic Wave Absorption

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Synthesis of a ternary Bi₂O₃/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride

Synthesis of a ternary Bi₂O₃/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride