Composite membranes based on self-crosslinking polyelectrolyte-wrapped ZIF-8/CNT nanoparticles for solar steam evaporation

Zhu, Yingying; Lan, Hongyu; He, Peigang; Zhu, Xuemei; Gong, Jiang; Dong, Zhiyue; Zeng, Ming‐Hua

doi:10.1039/d3ma00075c

Cited by 4 publications

(2 citation statements)

References 52 publications

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“…Nanoscience and nanotechnology are under constant research because all the possible applications with positive impact such as water remediation, wastewater treatment, nanocomposite production to enhance thermophysical properties, enhancement of properties related to use efficiently the solar energy, alternative methods for time an energy saving [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Black ZnO nanoparticles synthesized by a green chemistry process

León-Flores,

Melo-Uscanga,

Pérez-Mazariego

et al. 2024

Nano Ex.

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The green chemistry synthesis has acquired importance in recent years because of the avoidance of hazardous byproducts. In the present work, black ZnO nanoparticles were synthesized by a combustion green chemistry process using coffee extract as a reducer agent and stabilizer of the reaction. The preponderance size distribution of the black ZnO nanoparticles was found between 15 and 30 nm. High-resolution transmission electron microscopy shows distorted regions from the atomic column, while the estimated energy band gap measured by UV-Vis spectroscopy is 2.22 eV, which is a 30% value below the typical band gap for bulk ZnO. XPS measurements display a shift in the binding energy of the black ZnO compared against commercial ZnO. From the experimental evidence, it is proposed that the black color of the zinc oxide was a consequence of vacancies in the ZnO structure. Vacancies in the structure were modeled theoretically by considering a variation in the Coulomb interaction between Zn – O atoms by applying the Hubbard + U DFT approximation. The theoretical electronic distribution of the vacant ZnO was compared with experimental results obtained by Raman, FTIR and the experimental profile of the valence band region. These results open the exploration of green synthesized black zinc oxide nanoparticles to many technological applications.

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Section: Introductionmentioning

confidence: 99%

Black ZnO nanoparticles synthesized by a green chemistry process

León-Flores,

Melo-Uscanga,

Pérez-Mazariego

et al. 2024

Nano Ex.

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“…[11,12] Huang et al [13] obtained a metal-dopping semiconductor solar evaporator with an evaporation rate of 1.3 kg m −2 h −1 and a 60% wastewater purification rate. Overall, These designs, including solar thermal membrane evaporation, [14,15] photocatalytic redox reactions, [16,17] synergistic chemical phase changes, [18,19] and electrothermal effects [20] boosted the coupling of photothermal effects with multiple energy sources. Despite the steadily improved purification and vaporization capabilities of wastewater, [21] these designs exhibit limited applicability in real-life and costeffectiveness.…”

Section: Introductionmentioning

confidence: 99%

Customized Microenvironments Spontaneously Facilitate Coupled Engineering of Real‐Life Large‐Scale Clean Water Capture and Pollution Remediation

et al. 2023

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Harnessing abundant renewable resources and pollutants on a large scale to address environmental challenges while providing sustainable freshwater is a significant endeavor. In this study, we present the design of fully functional solar vaporization devices (SVD) based on organic‐inorganic hybrid nanocomposites (CCMs‐x). These devices exhibit efficient photothermal properties that facilitate multi‐targeted interfacial reactions, enabling simultaneous catalysis of sewage and desalination. The localized interfacial heating generated by the photothermal effect of CCMs‐x triggers surface‐dominated catalysis and steam generation. The CCMs‐x SVD achieves a solar water‐vapor generation rate of 1.41 kg m−2 h−1 (90.8%), and it achieves over 95% removal of pollutants within 60 min under one‐sun for practical application. The exceptional photothermal conversion rate of wastewater for environmental remediation and water capture is attributed to customized microenvironments within the system. The integrated parallel reaction system in SVD ensures it a real‐life application in multiple scenarios such as municipal, medical wastewater and brine containing high concentrations. Additionally, the SVD exhibits long‐term durability, antifouling functionality toward complex ionic contaminants. This study not only demonstrates a One‐Stone‐Two‐Birds strategy for large scale directly producing the potable water from polluted seawater, but also open up to exciting possibilities of parallel production of energy and water resources.This article is protected by copyright. All rights reserved

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Bi-functional carbon foam/TiO2 composite absorber for solar steam generation and photocatalytic purification

Zeng,

Yuan,

Fang

et al. 2023

Surfaces and Interfaces

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Composite membranes based on self-crosslinking polyelectrolyte-wrapped ZIF-8/CNT nanoparticles for solar steam evaporation

Abstract: Zeolitic Imidazolate Frameworks (ZIFs) are widely studied for selective transport of small molecules with their designable channels and cage-like pores. Herein, we design a solar-thermal hybrid membrane ZCP-20 (ZIF-8/CNTs@PCMVIMBr-20), where...

Cited by 4 publications

References 52 publications

Black ZnO nanoparticles synthesized by a green chemistry process

Black ZnO nanoparticles synthesized by a green chemistry process

Customized Microenvironments Spontaneously Facilitate Coupled Engineering of Real‐Life Large‐Scale Clean Water Capture and Pollution Remediation

Bi-functional carbon foam/TiO2 composite absorber for solar steam generation and photocatalytic purification

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