Flake-like InVO₄ modified TiO₂ nanofibers with longer carrier lifetimes for visible-light photocatalysts

Abstract

TiO2/InVO4 nanofibers have been designed and fabricated successfully by one-pot electrospinning process, which display longer carrier lifetime (22 ns) and enhanced visible-light photocatalytic activity.

Indium Oxides and Related Indium‐based Photocatalysts for Water Treatment: Materials Studied, Photocatalytic Performance, and Special Highlights

“…[ 37 ] Second, indium‐based ternary oxides such as InVO 4 , favorably couple with TiO 2 due to energy‐level matching. [ 95 ] This is shown in Figure , illustrating the ability to transfer holes to TiO 2 from the InVO 4 VB. [ 38 ] On its own, pure InVO 4 , especially when synthesized using solid‐state synthesis methods, exhibits minimal photocatalytic activity due to a very low specific surface area (<5 m 2 g −1 ), limiting its application as a photocatalyst.…”

“…Similarly focused on the controllable synthesis of pure phase InVO 4 of smaller dimensions, as part of a InVO 4 /TiO 2 heterostructure, Zhou et al [ 95 ] prepared flake‐like InVO 4 ‐modified TiO 2 NFs. These materials were prepared by a one‐pot electrospinning process and exhibited longer carrier lifetimes for visible‐light photocatalysts, evidenced by time‐resolved transient PL spectroscopy with emission decay times of 22.0 ns for the heterostructure (15.5 ns for TiO 2 NFs).…”

Synthesis of g‐C3N4/InVO4 Semiconductor for Improved Photocatalytic and Photoelectrochemical Applications

“…The exponential emission decay with time constants (τ) of 7.52 ns was obtained for pure g-C 3 N 4 , while, a much reduced value of τ that is 2.38 ns were obtained in presence of InVO 4 . It can be ascertained that the observed decrease in lifetime is attributed to the electron injection from photoexcited g-C 3 N 4 to the InVO 4 [64,65].…”

Photocurrents in crystal‐amorphous hybrid stannous oxide/alumina binary nanofibers

“…Besides, changes in morphology are shown to have significant effects on the materials’ performance, especially in their electrical and thermodynamic properties. Compared to smaller nanoparticles, one‐dimensional nanostructures such as nanowires and nanofibers, are shown to be beneficial due to their relatively larger volume and thermodynamic stability, with guided charge transport . One of the most viable technique to synthesize a variety of one‐dimensional materials in large quantities is electrospinning, which works under the principle of asymmetric bending of a charged liquid jet in an electric field.…”