Flexible self-supporting bifunctional [TiO2/C]//[Bi2WO6/C] carbon-based Janus nanofiber heterojunction photocatalysts for efficient hydrogen evolution and degradation of organic pollutant

Feng, Sun; Qi, Haina; Xie, Yunrui; Ma, Qianli; He, Wurigamula; Xu, Da; Wang, Guoyi; Yu, Wensheng; Wang, Tianqi; Dong, Xiangting

doi:10.1016/j.jallcom.2020.154673

Cited by 52 publications

(11 citation statements)

References 43 publications

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“…Janus structure can realize the effective separation of photoelectrons and holes. Sun et al (175) successfully prepared a novel carbon-based Janus nanofiber heterojunction photocatalyst by using conjugated electrospinning. On one side of Janus nanofiber is TiO 2 /C nanofiber responding to ultraviolet light, and on the other side is Bi 2 WO 6 /C nanofiber responding to visible light.…”

Section: Catalysismentioning

confidence: 99%

Structural design toward functional materials by electrospinning: A review

et al. 2020

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Electrospinning as one of the most versatile technologies have attracted a lot of scientists’ interests in past decades due to its great diversity of fabricating nanofibers featuring high aspect ratio, large specific surface area, flexibility, structural abundance, and surface functionality. Remarkable progress has been made in terms of the versatile structures of electrospun fibers and great functionalities to enable a broad spectrum of applications. In this article, the electrospun fibers with different structures and their applications are reviewed. First, several kinds of electrospun fibers with different structures are presented. Then the applications of various structural electrospun fibers in different fields, including catalysis, drug release, batteries, and supercapacitors, are reviewed. Finally, the application prospect and main challenges of electrospun fibers are discussed. We hope that this review will provide readers with a comprehensive understanding of the structural design and applications of electrospun fibers in different fields.

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Section: Catalysismentioning

confidence: 99%

Structural design toward functional materials by electrospinning: A review

et al. 2020

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“…3 e. The fabricated Janus nanofiber can be employed as an electrocatalyst for the oxygen reduction reaction. In 2020, Sun et al [ 73 ] electrospun [TiO 2 /C]//[Bi 2 WO 6 /C] carbon-based Janus nanofiber. In this nanofiber, TiO 2 and Bi 2 WO 6 form heterojunction that can absorb both ultraviolet light and visible light for hydrogen production and photodegradation.…”

Section: Design Of Nanofiber Structuresmentioning

confidence: 99%

“…Catalysts play an important role in the oxygen reduction reaction [ 85 ], pollutant treatment [ 9 , 65 , 86 ], energy conversion [ 73 ] and other fields. Improvement of catalytic efficiency has, for a long time, been the focus of scientific research.…”

Section: Tuning Of Nanofiber Materialsmentioning

confidence: 99%

Advanced functional nanofibers: strategies to improve performance and expand functions

Chen

Cao

et al. 2022

Front. Optoelectron.

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Nanofibers have a wide range of applications in many fields such as energy generation and storage, environmental sensing and treatment, biomedical and health, thanks to their large specific surface area, excellent flexibility, and superior mechanical properties. With the expansion of application fields and the upgrade of application requirements, there is an inevitable trend of improving the performance and functions of nanofibers. Over the past few decades, numerous studies have demonstrated how nanofibers can be adapted to more complex needs through modifications of their structures, materials, and assembly. Thus, it is necessary to systematically review the field of nanofibers in which new ideas and technologies are emerging. Here we summarize the recent advanced strategies to improve the performances and expand the functions of nanofibers. We first introduce the common methods of preparing nanofibers, then summarize the advances in the field of nanofibers, especially up-to-date strategies for further enhancing their functionalities. We classify these strategies into three categories: design of nanofiber structures, tuning of nanofiber materials, and improvement of nanofibers assemblies. Finally, the optimization methods, materials, application areas, and fabrication methods are summarized, and existing challenges and future research directions are discussed. We hope this review can provide useful guidance for subsequent related work. Graphical abstract

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“…This is ascribed to the heterostructures built in between the two phases, leading to accelerated separation and transfer of photogenerated electrons and holes. Nevertheless, the effective formation of heterostructures in between the TiO 2 and Bi 2 WO 6 phases are limited owing to the aggregation of these phases, resulting in the decrement of active sites during photocatalysis [ 27 ]. In order to further increase the effectiveness of these heterostructures, the fabrication of efficient TiO 2 materials for a homogeneous dispersion of Bi 2 WO 6 through its morphological control is expected to offer a solution [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Bi₂WO₆/TiO₂-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

Lin¹,

Yang²,

Huang³

2022

Beilstein J. Nanotechnol.

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A series of Bi2WO6/TiO2-nanotube (Bi2WO6/TiO2-NT) heterostructured composites were prepared by utilizing natural cellulose (e.g., laboratory filter paper) as the structural template. The obtained nanoarchitectonics, namely Bi2WO6/TiO2-NT nanocomposites, displayed three-dimensionally interwoven structures which replicated the initial cellulose template. The composite Bi2WO6/TiO2-NT nanotubes were formed by TiO2 nanotubes that uniformly anchored with Bi2WO6 nanoparticles of various densities on the surface. The composites exhibited improved photocatalytic activities toward the reduction of Cr(VI) and degradation of rhodamine B under visible light (λ > 420 nm), which were attributed to the uniform anchoring of Bi2WO6 nanoparticles on TiO2 nanotubes, as well as strong mutual effects and well-proportioned formation of heterostructures in between the Bi2WO6 and TiO2 phases. These improvements arose from the cellulose-derived unique structures, leading to an enhanced absorption of visible light together with an accelerated separation and transfer of the photogenerated electron–hole pairs of the nanocomposites, which resulted in increased effective amounts of photogenerated carriers for the photocatalytic reactions. It was demonstrated that the photoinduced electrons dominated the photocatalytic reduction of Cr(VI), while hydroxyl radicals and reactive holes contributed to the photocatalytic degradation of rhodamine B.

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Flexible self-supporting bifunctional [TiO2/C]//[Bi2WO6/C] carbon-based Janus nanofiber heterojunction photocatalysts for efficient hydrogen evolution and degradation of organic pollutant

Cited by 52 publications

References 43 publications

Structural design toward functional materials by electrospinning: A review

Structural design toward functional materials by electrospinning: A review

Advanced functional nanofibers: strategies to improve performance and expand functions

Hierarchical Bi₂WO₆/TiO₂-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

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Flexible self-supporting bifunctional [TiO2/C]//[Bi2WO6/C] carbon-based Janus nanofiber heterojunction photocatalysts for efficient hydrogen evolution and degradation of organic pollutant

Cited by 52 publications

References 43 publications

Structural design toward functional materials by electrospinning: A review

Structural design toward functional materials by electrospinning: A review

Advanced functional nanofibers: strategies to improve performance and expand functions

Hierarchical Bi2WO6/TiO2-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

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Product

Resources

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Hierarchical Bi₂WO₆/TiO₂-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants