Sunlight-Sensitive Anti-Fouling Nanostructured TiO2 coated Cu Meshes for Ultrafast Oily Water Treatment

Liu, Haoran; Raza, Aikifa; Aili, Abulimiti; Lu, Jin-You; AlGhaferi, Amal; Zhang, Tiejun

doi:10.1038/srep25414

Cited by 51 publications

(34 citation statements)

References 46 publications

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“…Some methods used to improve the efficiency of TiO2 are to incorporate impurities by doping [91], sensitization [92], surface modification [87], and composites [85]. Liu et al [90] reported a scalable method to enhance the visible light absorption by depositing TiO2 on copper substrate. The TiO2/Cu stacked structure shows a strong absorption band in the visible range due to the absorption of metallic Cu substrate, as shown in Figure 8c.…”

Section: Condensation and Collectionmentioning

confidence: 99%

“…To cope with this challenge, we fabricated a semi-spectrally-selective absorber based on copper oxide nanostructures on copper substrate. According to our previous report, by varying the chemical etching time, we can control the growth of copper nanostructures density on copper substrate [90]. with near perfect absorption in the visible range.…”

Section: Scalable Thermal Concentration Design For Steam Generationmentioning

confidence: 99%

“…(d) The spectral absorptance of MB(aq) degradation using TiO2 nanostructures on copper substrate under direct sun light irradiance for 2 h, respectively [90]. Reprinted from [90]. Copyright (2016) by Nature Publishing Group.…”

Section: Antifouling and Durabilitymentioning

confidence: 99%

“…(c) The predicted absorptance spectra of thin films of 120 nm thick TiO2 on glass, Cu, and 500 nm thick CuO/Cu substrates. (d) The spectral absorptance of MB(aq) degradation using TiO2 nanostructures on copper substrate under direct sun light irradiance for 2 h, respectively [90]. Reprinted from [90].…”

Section: Antifouling and Durabilitymentioning

confidence: 99%

“…The 4 cm x 4 cm absorber with slot size of 2 mm in diameter is thermally insulated from the bottom side and placed on container with volume of 500 mL. First, a spectrally selective solar absorber is fabricated by controlling the growth of copper oxide nanostructures on copper substrate during the chemical etching process [90,128,129]. Previously, researchers have widely used the blackbody absorbers owing to their near perfect absorption in the solar spectrum.…”

Section: Scalable Thermal Concentration Design For Steam Generationmentioning

confidence: 99%

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Novel Receiver-Enhanced Solar Vapor Generation: Review and Perspectives

Raza

Alzaim

et al. 2018

Energies

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Efficient solar vapor/steam generation is important for various applications ranging from power generation, cooling, desalination systems to compact and portable devices like drinking water purification and sterilization units. However, conventional solar steam generation techniques usually rely on costly and cumbersome optical concentration systems and have relatively low efficiency due to bulk heating of the entire liquid volume. Recently, by incorporating novel light harvesting receivers, a new class of solar steam generation systems has emerged with high vapor generation efficiency. They are categorized in two research streams: volumetric and floating solar receivers. In this paper, we review the basic principles of these solar receivers, the mechanism involving from light absorption to the vapor generation, and the associated challenges. We also highlight the two routes to produce high temperature steam using optical and thermal concentration. Finally, we propose a scalable approach to efficiently harvest solar energy using a semi-spectrally selective absorber with near-perfect visible light absorption and low thermal emittance. Our proposed approach represents a new development in thermally concentrated solar distillation systems, which is also cost-effective and easy to fabricate for rapid industrial deployment.

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Section: Condensation and Collectionmentioning

confidence: 99%

Section: Scalable Thermal Concentration Design For Steam Generationmentioning

confidence: 99%

Section: Antifouling and Durabilitymentioning

confidence: 99%

Section: Antifouling and Durabilitymentioning

confidence: 99%

Section: Scalable Thermal Concentration Design For Steam Generationmentioning

confidence: 99%

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Novel Receiver-Enhanced Solar Vapor Generation: Review and Perspectives

Raza

Alzaim

et al. 2018

Energies

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Underwater Superoleophobic Wood Cross Sections for Efficient Oil/Water Separation

Blanco

Fischer

Cabane

2017

Adv Materials Inter

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Multifunctional CuO‐Coated Mesh for Wastewater Treatment: Effective Oil/Water Separation, Organic Contaminants Photodegradation, and Bacterial Photodynamic Inactivation

Meng

Zhang

Wang

et al. 2021

Adv Materials Inter

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wastewater systems contain many complex contaminants such as insoluble oils, organic dyes, and bacteria, making the wastewater cleanup in a single-step highly challenging. [3][4][5][6] Traditional treatment methods, including controlled burning, absorption, air flotation, skimming, gravity separation, coagulation, photocatalytic degradation, and bioremediation, are required for water purification, whereas for a complete wastewater cleanup, traditional multiple methods are required. [7][8][9][10][11][12] Therefore, developing multifunctional materials that can deal with multiple contaminants simultaneously to achieve the complex wastewater cleanup are greatly favored.Inspired by nature, the materials with special superwetting surfaces have received more considerable attention for wastewater cleanup because of their low energy consumption, high efficiency and specific selectivity. [13][14][15][16][17][18][19][20][21] In the past decade, a rich library of superhydrophobic/ superoleophilic materials that can selectively absorb or filter the oils out from oil/ water mixtures, has been developed for the purpose of wastewater treatment. [22][23][24][25] A common drawback in using those materials is that they are easily fouled or even clogged by the permeated oils, consequently, leading to a dramatic decline of their separation capacity and recyclability in the subsequent use. In contrast, the superhydrophilic and The complex pollutants in wastewater including insoluble oils, organic dyes, and bacteria, have caused severe environmental problems, which are harmful to ecosystems and human health and are complex and difficult to achieve wastewater purification with one material or single procedure. Herein, a facile, yet environmentally benign strategy is proposed to fabricate a superhydrophilic/underwater superoleophobic CuO-coated mesh for all-in-one wastewater treatment. In this strategy, the hierarchical micro/nano structured CuO-coated mesh is fabricated via an oxidation-dehydration process, which simultaneously endows the mesh with superwetting ability, remarkable photocatalytic degradation ability, and excellent photodynamic antibacterial activity. This CuO-coated mesh first exhibits the special underwater superoleophobicity, superior durability, reusability, and high antifouling capability, which ensures its high separation efficiency for oil/water mixtures. Then, this CuO-coated mesh is underwater superoleophobic, possessing the remarkable photocatalytic degradation performance of organic dye contaminates in water and excellent photodynamic antibacterial activities against Escherichia coli and Staphylococcus aureus under visible-light irradiation. As such, it plays a multi-role in wastewater remedy, significantly simplifying the implementation and saving the cost in practice. This work suggests a promising approach for the design of multi-functional materials in environmental remedies.

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Sunlight-Sensitive Anti-Fouling Nanostructured TiO2 coated Cu Meshes for Ultrafast Oily Water Treatment

Cited by 51 publications

References 46 publications

Novel Receiver-Enhanced Solar Vapor Generation: Review and Perspectives

Novel Receiver-Enhanced Solar Vapor Generation: Review and Perspectives

Underwater Superoleophobic Wood Cross Sections for Efficient Oil/Water Separation

Multifunctional CuO‐Coated Mesh for Wastewater Treatment: Effective Oil/Water Separation, Organic Contaminants Photodegradation, and Bacterial Photodynamic Inactivation

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