3D Bi₂MoO₆ Nanosheet/TiO₂ Nanobelt Heterostructure: Enhanced Photocatalytic Activities and Photoelectochemistry Performance

Abstract

We employed TiO 2 nanobelts as the synthetic template and developed three-dimensional (3D) porous Bi 2 MoO 6 nanosheet/TiO 2 nanobelt heterostructures with a few-layer and uniform Bi 2 MoO 6 nanosheets by a simple hydrothermal method.The as-prepared Bi 2 MoO 6 nanosheet/TiO 2 nanobelt heterostructure shows an excellent photodegradation performance under UV and visible light irradiation.Importantly, such a heterostructure possesses high photocatalytic oxygen production with the rate of 0.668 mmol h −1 g −1 . Moreover, the Bi 2 MoO 6 nanosheet/TiO 2 nanobelt heterostructure shows an enhanced photoelectochemistry (PEC) performance under irradiation of solar illumination. The current research can offer an alternative route for designing 3D heterostructure system to effectively utilize the broad spectrum solar light.

Facile Preparation of Nano-Bi2MoO6/Diatomite Composite for Enhancing Photocatalytic Performance under Visible Light Irradiation

“…As we know that more than 43% of the solar radiance onto the Earth’s surface is visible light, compared to titanium dioxide photocatalyst, its catalytic efficiency will be much higher. To further improve photocatalytic performance of Bi 2 MoO 6 , many composite superstructures have been proposed and synthesized, for instance, TiO 2 /Bi 2 MoO 6 [14], Bi 2 MoO 6 /MoO 3 [15], g-C 3 N 4 /Bi 2 MoO 6 [16], Bi 2 MoO 6 -RGO [17] and other photocatalysts have shown a high catalytic activity and light stability. However, these materials are not only high cost and difficult to prepare, but also can accelerate the agglomerate of Bi 2 MoO 6 .…”

Black TiO2 nanobelts/g-C3N4 nanosheets Laminated Heterojunctions with Efficient Visible-Light-Driven Photocatalytic Performance

“…TiO 2 nanobelts, have attracted great interest because of their large surface areas24, chemical stability25, and provide sufficient space for the new nucleation26. 2D semiconductor materials, such as g-C 3 N 4 nanosheets, possess a unique layered structure and narrow band gap27, which could absorb visible light efficiently.…”

In situ growing Bi2MoO6 on g-C3N4 nanosheets with enhanced photocatalytic hydrogen evolution and disinfection of bacteria under visible light irradiation

“…Based on the result of UV-vis spectra, the band gap energies of BM and CNNs are 2.67 and 2.78 eV, respectively. X is the absolute electronegativity of the semiconductor and the X values for BM and CNNs are 5.54 and 4.67 eV, respectively [47,48]. E e is the energy of free electrons on the hydrogen scale (about 4.5 eV).…”