Exploring the potential of flexible CdS/ZnO/Polyurethane nanocomposite membrane for wastewater remediation

Zou, Min; Tan, Chao; Zhang, Yan; Hu, Junjie; Ma, Zhou; Yuan, Zhengqiu; Zhang, Lei; Wu, Ming Hsiu; Zhou, Hu

doi:10.1016/j.jece.2023.110135

Cited by 16 publications

(4 citation statements)

References 62 publications

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“…Recently, researchers have addressed these challenges by immobilizing powdered nanophotocatalysts onto carriers to create supported nanocomposites, enhancing nanoparticle dispersion and catalyst stability [ 12 ]. Zhou et al [ 13 ] achieved a high dispersion of cadmium sulfide nanoparticles on polyurethane films through insitu immobilization, resulting in an enhanced photocatalytic activity and stability for organic pollutant removal. Abad et al [ 14 ] developed an Au/ZnO cellulose film with uniformly dispersed active components, demonstrating a notable 95.28% efficiency in photocatalytic degradation of Eosin Y.…”

Section: Introductionmentioning

confidence: 99%

Hydrophilicity and Pore Structure Enhancement in Polyurethane/Silk Protein–Bismuth Halide Oxide Composite Films for Photocatalytic Degradation of Dye

Meng,

Jian,

Yang

et al. 2024

IJMS

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Polyurethane/silk protein–bismuth halide oxide composite films were fabricated using a blending-wet phase transformationin situsynthesis method. The crystal structure, micromorphology, and optical properties were conducted using XRD, SEM, and UV-Vis DRS characterize techniques. The results indicated that loaded silk protein enhanced the hydrophilicity and pore structure of the polyurethane composite films. The active species BiOX were observed to grow as nanosheets with high dispersion on the internal skeleton and silk protein surface of the polyurethane–silk protein film. The photocatalytic efficiency of BiOX/PU-SF composite films was assessed through the degradation of Rhodamine B under visible light irradiation. Among the tested films, the BiOBr/PU-SF composite exhibited the highest removal rate of RhB at 98.9%, surpassing the removal rates of 93.7% for the BiOCl/PU-SF composite and 85.6% for the BiOI/PU-SF composite. Furthermore, an active species capture test indicated that superoxide radical (•O2−) and hole (h+) species played a predominant role in the photodegradation process.

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Section: Introductionmentioning

confidence: 99%

Hydrophilicity and Pore Structure Enhancement in Polyurethane/Silk Protein–Bismuth Halide Oxide Composite Films for Photocatalytic Degradation of Dye

Meng,

Jian,

Yang

et al. 2024

IJMS

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“…In summary, due to the continuous advancement of technology and increasing environmental protection requirements, photocatalytic membrane technology and water-based polyurethane materials are expected to play a crucial role in the future of water treatment and the photocatalytic industry. 30 In this study, WO 3 /Bi 2 MoO 6 /PU photocatalytic composite films were successfully prepared on this basis. Figure 1 depicts the use of polyurethane (PU) as a polymer carrier loaded with Bi 2 MoO 6 /WO 3 heterojunction to impart the hybrid film with certain photocatalytic properties, particularly in the photocatalytic degradation of 2,4-DCP.…”

Section: Introductionmentioning

confidence: 99%

“…High mechanical strength and adjustability properties make it often used as a substrate skeleton for wastewater treatment. , Therefore, compounding polyurethanes to form catalytic films is currently a challenging problem. In summary, due to the continuous advancement of technology and increasing environmental protection requirements, photocatalytic membrane technology and water-based polyurethane materials are expected to play a crucial role in the future of water treatment and the photocatalytic industry …”

Section: Introductionmentioning

confidence: 99%

Stable and Flexible Polyurethane Membranes with WO₃/Bi₂MoO₆ Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

Zhang,

Tang,

Cao

et al. 2024

ACS Appl. Nano Mater.

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The objective of this work is to develop a microsomal composite catalytic membrane that exhibits efficient catalytic capabilities and robust stability, thereby addressing the challenge of recycling and reusing powdered photocatalytic materials. Specifically, Bi 2 MoO 6 and WO 3 nanoparticles were incorporated onto polyurethane (PU) substrates using a hybrid in situ growth method. By forming Bi 2 MoO 6 /WO 3 heterojunctions, the photocatalytic activity of the membrane was enhanced without compromising its structural integrity. The flexibility and porosity of PUs play a crucial role in facilitating the adsorption of 2,4dichlorophenol (DCP) molecules on the membrane's surface, leading to the efficient degradation of contaminants through the cleavage of C−Cl bonds triggered by the migration of electron pairs generated by the photocatalysts. A 5 × 5 cm composite membrane was tested for degradation in 20 mg/L 2,4-DCP solutions with neutral pH, achieving a degradation rate of 78.8% within 120 min. The composite membrane exhibited stability after undergoing six cycles of testing, affirming the effectiveness of its composition. Furthermore, a detailed analysis was conducted on the photocatalytic reaction mechanism of 2,4-DCP on the WO 3 /Bi 2 MoO 6 /PU membrane surface, highlighting the potential of porous composite membranes for wastewater treatment.

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“…Recent research has revealed that ZnO/CdS heterostructures outperformed pristine ZnO and CdS nanostructures in terms of photocatalytic performance under visible-light irradiation [37][38][39]. Because of their distinctive electronic band structure, changed bandgap, and high charge transfer efficiency, ZnO-based semiconductor nanostructures have been employed as efficient photocatalytic materials for the breakdown of organic pollutants and chemical processes such as hydrogen or oxygen synthesis [40,41]. On the other hand, because of its excellent visible-light absorption capabilities, narrow bandgap (2.4 eV), and appropriately negative flat band potential, CdS is a well-known semiconductor material for photocatalytic applications [42].…”

Section: Introductionmentioning

confidence: 99%

Review of Recent Developments in the Fabrication of ZnO/CdS Heterostructure Photocatalysts for Degradation of Organic Pollutants and Hydrogen Production

Nadikatla¹,

Chintada²,

Gurugubelli³

et al. 2023

Molecules

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Researchers have recently paid a lot of attention to semiconductor photocatalysts, especially ZnO-based heterostructures. Due to its availability, robustness, and biocompatibility, ZnO is a widely researched material in the fields of photocatalysis and energy storage. It is also environmentally beneficial. However, the wide bandgap energy and quick recombination of the photoinduced electron–hole pairs of ZnO limit its practical utility. To address these issues, many techniques have been used, such as the doping of metal ions and the creation of binary or ternary composites. Recent studies showed that ZnO/CdS heterostructures outperformed bare ZnO and CdS nanostructures in terms of photocatalytic performance when exposed to visible light. This review largely concentrated on the ZnO/CdS heterostructure production process and its possible applications including the degradation of organic pollutants and hydrogen evaluation. The importance of synthesis techniques such as bandgap engineering and controlled morphology was highlighted. In addition, the prospective uses of ZnO/CdS heterostructures in the realm of photocatalysis and the conceivable photodegradation mechanism were examined. Lastly, ZnO/CdS heterostructures’ challenges and prospects for the future have been discussed.

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Exploring the potential of flexible CdS/ZnO/Polyurethane nanocomposite membrane for wastewater remediation

Cited by 16 publications

References 62 publications

Hydrophilicity and Pore Structure Enhancement in Polyurethane/Silk Protein–Bismuth Halide Oxide Composite Films for Photocatalytic Degradation of Dye

Hydrophilicity and Pore Structure Enhancement in Polyurethane/Silk Protein–Bismuth Halide Oxide Composite Films for Photocatalytic Degradation of Dye

Stable and Flexible Polyurethane Membranes with WO₃/Bi₂MoO₆ Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

Review of Recent Developments in the Fabrication of ZnO/CdS Heterostructure Photocatalysts for Degradation of Organic Pollutants and Hydrogen Production

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Exploring the potential of flexible CdS/ZnO/Polyurethane nanocomposite membrane for wastewater remediation

Cited by 16 publications

References 62 publications

Hydrophilicity and Pore Structure Enhancement in Polyurethane/Silk Protein–Bismuth Halide Oxide Composite Films for Photocatalytic Degradation of Dye

Hydrophilicity and Pore Structure Enhancement in Polyurethane/Silk Protein–Bismuth Halide Oxide Composite Films for Photocatalytic Degradation of Dye

Stable and Flexible Polyurethane Membranes with WO3/Bi2MoO6 Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol

Review of Recent Developments in the Fabrication of ZnO/CdS Heterostructure Photocatalysts for Degradation of Organic Pollutants and Hydrogen Production

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Stable and Flexible Polyurethane Membranes with WO₃/Bi₂MoO₆ Nanoparticles for the Photocatalytic Degradation of 2,4-Dichlorophenol