General Strategy for Fabricating Thoroughly Mesoporous Nanofibers

Abstract

Recently, preparation of mesoporous fibers has attracted extensive attentions because of their unique and broad applications in photocatalysis, optoelectronics, and biomaterials. However, it remains a great challenge to fabricate thoroughly mesoporous nanofibers with high purity and uniformity. Here, we report a general, simple and cost-effective strategy, namely, foaming-assisted electrospinning, for producing mesoporous nanofibers with high purity and enhanced specific surface areas. As a proof of concept, the as-fabricated mesoporous TiO2 fibers exhibit much higher photocatalytic activity and stability than both the conventional solid counterparts and the commercially available P25. The abundant vapors released from the introduced foaming agents are responsible for the creation of pores with uniform spatial distribution in the spun precursor fibers. The present work represents a critically important step in advancing the electrospinning technique for generating mesoporous fibers in a facile and universal manner.

Fabrication and characterization of a nanocomposite hydrogel for combined photocatalytic degradation of a mixture of malachite green and fast green dye

“…They actually remove the toxic organic pollutants to the maximum extent under different conditions. These are the most preferred materials due to their low cost and almost nil production of harmful by-products [30,31].…”

Synergistic effect of N-decorated and Mn2+ doped ZnO nanofibers with enhanced photocatalytic activity

“…This technique performance is not only feasible and simple but also it is an ideal way to prepare nano-materials with specific composition, large specific surface area and recoverable character. It is also reported that an increasing number of nanocatalysts are fabricated by this approach252627. Some notable examples include ZnO, TiO 2 , SnO 2 , ZnS and BiVO 4 128293031, etc .…”

Mesoporous Ag@TiO2 nanofibers and their photocatalytic activity for hydrogen evolution

“…2(c and d)) under different magnications and views, prepared by foaming-assisted electrospinning as similar to a previous work. 46 The Ag@TiO 2 samples fabricated via strategy II (see Scheme 1b) are depicted in Fig. 2(e) and (f), showing that the products possess well-dened 1D mesoporous nanostructures.…”

“…[42][43][44][45] The present study employed the electrospinning technique combined with other proposed process to prepare Ag@TiO 2 mesoporous nanobers. As inspired by previous work, 46 diisopropyl azodiformate (DIPA) was added to the initial spinning solutions and homogeneous boxed throughout the precursor (tetrabutyl titanate (TBOT) and polyvinylpyrrolidone (PVP)) to create a porous structure. AgNO 3 was used as the Ag dopant source and the introduction of Ag to TiO 2 matrix occurred via two different ways, in an aim to explore the most valuable strategy.…”