All-weather-available electrothermal and solar–thermal wood-derived porous carbon-based steam generators for highly efficient water purification

Wu, Jing; Li, Xiaofeng; Zhang, Tingting; Li, Xiaopeng; Li, Wei; Yu, Zhong‐Zhen

doi:10.1039/d1qm01544c

Cited by 21 publications

(7 citation statements)

References 67 publications

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“…43 It can be seen that the relative ratio of the C−O bond gradually This feature on the one hand means that the conductivity of the material may be improved; on the other hand, it is also reflected in the gradual enhancement of the hydrophobic properties of the material surface (Figure S11). The increasing intensity of the X-ray diffraction at 2θ = 44.3°in Figure S12 and the decrease of the I D /I G value from 1.72 to 1.48 in Figure S13 both indicate the improvement of the crystallinity of the obtained CTAs and the reduction of the defects in the graphite-like matrix, 44,45 implying the improvement of conductive properties. As shown in Figure S14, the absorption bands at 3425, 1715, 1390, and 1104 cm −1 corresponding to the stretching vibration of −OH, C�O, C−H, and C−O−C groups, respectively, can be observed, which is consistent with the XPS results.…”

Section: Resultsmentioning

confidence: 99%

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Sun

Lou

Lei

et al. 2023

ACS Appl. Mater. Interfaces

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Biologically inspired superstructural materials exhibit wide application prospects in many fields, in terms of mitigating increasingly serious electromagnetic (EM) pollution in the civil field. Here, we successfully obtain bamboo slices with uniform pore size distribution through the advanced bamboo transverse splitting technology developed by our group previously and prepare large-scale honeycomb-like carbon-based tubular array (CTA) structures with a controllable pore size, graphitization degree, and selectable conductivity property. Based on the simulation and experimental results, the EM shielding performance of CTAs is proven to be sensitive to the microchannel aperture size and the EM energy incident angle, which is attributed to the difference in the propagation rate of induced electrons in different directions. Among the candidates, CTA-middle-1500 exhibits the best shielding performance against incident EM energy with average SE/ρ values of 123.7 and 144.5 dB cm3 g–1 for perpendicular and parallel directions, respectively, showing its application potential as a lightweight and efficient EM shielding material. The predicted optimal incident angle for CTA-middle-1500 against EM energy radiation is 15°, with the largest RCS reduction value of 26.1 dB m2. The excellent EM shielding performance is attributed to the good reflection capacity involved with the high conductivities of the CTAs.

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Section: Resultsmentioning

confidence: 99%

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Sun

Lou

Lei

et al. 2023

ACS Appl. Mater. Interfaces

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“…Figure 3 i shows the comparison of the evaporation rate and efficiency of the C-5.4 sample with those reported under 1 sun. It can be seen that the evaporation performance was better than the majority of those reported previously [ 11 , 13 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ] but a little worse than that reported in the literature [ 40 ]. This is because, in this paper, we took into account the decrease in the evaporation enthalpy with the sample.…”

Section: Resultsmentioning

confidence: 51%

Flower-Shaped Carbon Nanomaterials for Highly Efficient Solar-Driven Water Evaporation

Wang¹,

Xu²,

Yao

et al. 2022

Molecules

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Solar-driven interface water evaporation is an energy-saving, environmentally friendly, and efficient seawater desalination and wastewater treatment technology. However, some challenges still restrict its further industrial development, such as its complex preparation, heavy metal pollution, and insufficient energy utilization. In this study, a photothermal layer based on flower-shaped carbon nanoparticles is presented for highly efficient solar-driven interface evaporation for water treatment applications. The results show that the surface of the prepared carbon nanomaterials presents a flower-shaped structure with an excellent light absorption capacity and a large specific surface area. Moreover, the C-5.4 (Carbon-5.4) sample has an evaporation rate of 1.87 kg/m2/h and an evaporation efficiency of 87%—far higher than most photothermal materials. In addition, carbon nanomaterials have an excellent ion scavenging capacity, dye purification capacity, and outdoor practical performance. This study provides a new solution for the application of carbon nanomaterials in the field of water purification.

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“…Inorganic semiconductors, such as Bi 2 Te 3 , clathrates, and semimetals, have acquired excellent thermoelectric performance due to the excellent carrier concentration in the range of 10 19 –10 21 cm –3 , while without outstanding photothermal performance. Most STEGs used today are heterogeneous asynchronous (converting light energy to heat first and then to electricity), created by assembling solar absorbers, inorganic materials, and thermal management materials. ,,− Nevertheless, its more thorough practical implementation is constrained by its high cost, labor-intensive preparation, and harsh working circumstances. , Therefore, there is a critical demand for low-cost, straightforward-to-manufacture materials with all-in-one PTE properties.…”

Section: Introductionmentioning

confidence: 99%

Achieving Free-Standing PEDOT:PSS Solar Generators with Efficient All-in-One Photothermoelectric Conversion

Xiao-hong

Jin

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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Poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) has attracted widespread attention in solar generation due to its unique all-in-one photothermoelectric effect. However, the poor photothermal conversion, low conductivity, and unsatisfied mechanical properties limit its practical application. Herein, ionic liquids (IL) were first used to improve the conductivity of PEDOT:PSS through ion exchange, then surface-charged nanoparticles SiO 2 −NH 2 (SiO 2 + ) were added to promote the dispersion of IL and as a thermal insulator to decrease thermal conductivity. It resulted in a largely enhanced electrical conductivity and decreased thermal conductivity of PEDOT:PSS simultaneously. The obtained PEDOT:PSS/Ionic Liquid/SiO 2 + (P_IL_SiO 2 +) film generated an excellent photothermal conversion of 46.15 °C, which improved ∼134 and ∼82.3% compared with PEDOT:PSS and PEDOT:PSS/Ionic Liquid (P_IL) composites, respectively. In addition, the thermoelectric performance increased by ∼270% more than P_IL films. As a result, the photothermoelectric effect for the self-supported three-arm devices produced an enormous output current and power of ∼50 μA and 13.57 nW, respectively, which showed significant improvement compared with other PEDOT:PSS films reported in the literature. Furthermore, the devices demonstrated outstanding stability with an internal resistance variation of less than 5% after 2000 cycles of bending. Our research offered significant insights into the flexible, high-performance, all-in-one photothermoelectric integration.

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All-weather-available electrothermal and solar–thermal wood-derived porous carbon-based steam generators for highly efficient water purification

Abstract: Solar steam generation devices cannot work properly under weak solar light irradiation and even no solar light. Herein, an all-weather-available electrothermal and solarthermal wood-derived porous carbon-based water steam generation device...

Cited by 21 publications

References 67 publications

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Flower-Shaped Carbon Nanomaterials for Highly Efficient Solar-Driven Water Evaporation

Achieving Free-Standing PEDOT:PSS Solar Generators with Efficient All-in-One Photothermoelectric Conversion

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