Hierarchical meso/macro-porous TiO2/graphitic carbon nitride nanofibers with enhanced hydrogen evolution
TL;DR: In this article, a hierarchical meso/macro-porous structure was developed by introducing polyvinylpyrrolidone and liquid paraffin into the electrospinning solution.
About: This article is published in Materials & Design.The article was published on 2021-04-01 and is currently open access. It has received 26 citations till now. The article focuses on the topics: Nanofiber & Graphitic carbon nitride.
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TL;DR: In this paper, a frugal and facile approach was reported for decorating MoS2 nanosheets on copper nanorods to design a trifunctional catalyst for electrochemical water splitting and photocatalytic CO2 conversion.
40 citations
TL;DR: In this article, the hollow TiO2 microspheres with an appropriate thickness are confined in carbon micro-spheres (CMSs), which are physically integrated with carbon-fiber textile by van der Waals (vdW) interactions to generate separable and recyclable hollowTiO2@cMSs/carbon fiber vdW heterostructures.
22 citations
TL;DR: In this paper , the hollow TiO2 microspheres with an appropriate thickness are confined in carbon micro-spheres (CMSs), which are physically integrated with carbon-fiber textile by van der Waals (vdW) interactions to generate separable and recyclable hollowTiO2@cMSs/carbon fiber vdW heterostructures.
20 citations
TL;DR: In this article, the Z-scheme two-dimentional (2D)/one-dimensional (1D) g-C3N4/MoO3-x composites were prepared by a facile electrostatic assembling approach.
14 citations
TL;DR: In this paper , the Z-scheme two-dimentional (2D)/one-dimensional (1D) g-C3N4/MoO3-x composites were synthesized by a hydrothermal method with a trace amount of oleylamine.
14 citations
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TL;DR: This review presents an overview of the electrospinning technique with its promising advantages and potential applications, and focuses on varied applications of electrospun fibers in different fields.
3,932 citations
TL;DR: This review gives a concise overview of the all-solid-state Z-scheme photocatalytic systems, including their composition, construction, optimization and applications, which have a huge potential to solve the current energy and environmental crises facing the modern industrial development.
Abstract: The current rapid industrial development causes the serious energy and environmental crises. Photocatalyts provide a potential strategy to solve these problems because these materials not only can directly convert solar energy into usable or storable energy resources but also can decompose organic pollutants under solar-light irradiation. However, the aforementioned applications require photocatalysts with a wide absorption range, long-term stability, high charge-separation efficiency and strong redox ability. Unfortunately, it is often difficult for a single-component photocatalyst to simultaneously fulfill all these requirements. The artificial heterogeneous Z-scheme photocatalytic systems, mimicking the natural photosynthesis process, overcome the drawbacks of single-component photocatalysts and satisfy those aforementioned requirements. Such multi-task systems have been extensively investigated in the past decade. Especially, the all-solid-state Z-scheme photocatalytic systems without redox pair have been widely used in the water splitting, solar cells, degradation of pollutants and CO2 conversion, which have a huge potential to solve the current energy and environmental crises facing the modern industrial development. Thus, this review gives a concise overview of the all-solid-state Z-scheme photocatalytic systems, including their composition, construction, optimization and applications.
1,949 citations
TL;DR: It is demonstrated that rational design and construction of isotype heterojunction could open up a new avenue for the development of new efficient visible-light photocatalysts and the removal of NO in air.
Abstract: The photocatalytic performance of the star photocatalyst g-C3N4 was restricted by the low efficiency because of the fast charge recombination. The present work developed a facile in situ method to construct g-C3N4/g-C3N4 metal-free isotype heterojunction with molecular composite precursors with the aim to greatly promote the charge separation. Considering the fact that g-C3N4 samples prepared from urea and thiourea separately have different band structure, the molecular composite precursors of urea and thiourea were treated simultaneously under the same thermal conditions, in situ creating a novel layered g-C3N4/g-C3N4 metal-free heterojunction (g-g CN heterojunction). This synthesis method is facile, economic, and environmentally benign using easily available earth-abundant green precursors. The confirmation of isotype g-g CN heterojunction was based on XRD, HRTEM, valence band XPS, ns-level PL, photocurrent, and EIS measurement. Upon visible-light irradiation, the photogenerated electrons transfer from ...
1,024 citations
TL;DR: Graphene as an excellent electron-accepting and electron-transporting material has been incorporated into the hierarchically ordered macro-mesoporous titania frameworks by in situ reduction of graphene oxide added in the self-assembly system.
Abstract: Hierarchically ordered macro−mesoporous titania films have been produced through a confinement self-assembly method within the regular voids of a colloidal crystal with three-dimensional periodicity. Furthermore, graphene as an excellent electron-accepting and electron-transporting material has been incorporated into the hierarchically ordered macro−mesoporous titania frameworks by in situ reduction of graphene oxide added in the self-assembly system. Incorporation of interconnected macropores in mesoporous films improves the mass transport through the film, reduces the length of the mesopore channel, and increases the accessible surface area of the thin film, whereas the introduction of graphene effectively suppresses the charge recombination. Therefore, the significant enhancement of photocatalytic activity for degrading the methyl blue has been achieved. The apparent rate constants for macro−mesoporous titania films without and with graphene are up to 0.045 and 0.071 min−1, respectively, almost 11 and ...
710 citations
TL;DR: In this article, a brief overview of recent progress in preparation of ceramic nanofibers by electrospinning, with a focus on an introduction to experimental procedures and analysis of several technical issues that are vital for a successful electro-spinning experiment.
Abstract: Electrospinning is a remarkably simple method for generating nanofibers of polymers. When combined with conventional sol–gel processing, it provides a versatile technique for producing ceramic nanofibers with either a solid, porous, or hollow structure. This article presents a brief overview of recent progress in preparation of ceramic nanofibers by electrospinning, with a focus on an introduction to experimental procedures and analysis of several technical issues that are vital for a successful electrospinning experiment. We also highlight the unique capabilities of this technique in processing ceramic materials into nanostructures, and illustrate some potential applications of these nanostructures.
482 citations