MoSe₂/TiO₂ Nanofibers for Cycling Photocatalytic Removing Water Pollutants under UV–Vis–NIR Light

Abstract

Highly effective utilization of solar light is very important for water treatment via photocatalysis. To achieve this goal, we designed and synthesized an efficient full-spectrumresponse photocatalyst based on MoSe 2 /TiO 2 nanofibers. Ultrathin MoSe 2 nanosheets with controllable size and density were evenly grown on electrospun TiO 2 nanofibers by a simple solvothermal method. Under full spectrum irradiation, the photocatalytic reaction rates of MoSe 2 /TiO 2 nanofibers for the removal of rhodamine B, tetracycline hydrochloride and K 2 Cr 2 O 7 aqueous solutions were 7.7, 9.0, and 7.6 times higher than pure MoSe 2 , and were 2.4, 1.4, and 38 times higher than pure TiO 2 , respectively. The loading amounts of MoSe 2 nanosheets have strong effects on their performance. All ultraviolet, visible, and near-infrared light collected by the heterostructures can be well converted to strong oxidizing •O 2 − and •OH and reducing electrons, which are useful active species for removing water pollutants of organics or reducible metal ions. The uniform interface contact and hierarchical heterostructure improved their charge separation and transfer properties, whereas their ultralong one-dimensional and nanofibrous network structure ensured their excellent reusable property. This work presents a new vision in designing full-spectrum-response photocatalysts with efficient and reusable properties.

Molecular Engineering Strategies toward Molybdenum Diselenide Design for Energy Storage and Conversion

“…Owing to the development of computational science, relevant theoretical calculations and ML technologies can further guide the selection of collaborators and structural design of MoSe 2 -based photocatalysts, [288] helping researchers to further evaluate the potential of MoSe 2 as a cocatalyst. In addition to their use for the photocatalytic HER, numerous modified-MoSe 2 -based Z-scheme photocatalysts have been applied to degrade organic pollutants, [289][290][291][292] and treat wastewater [293,294] by utilizing visible light irradiation, thereby confirming the advantages of employing MoSe 2 -based materials for environmental protection and their considerable commercial potential. , and its relevant photocatalytic behaviors.…”

ZnS Nanospheres Coated with ZnSe/MoSe2 Shells as Dual Heterojunctions with Wide Spectral Responses for the Photoreduction of Cr(VI)

“…In recent years, photocatalysis technology provides an ideal new idea for energy utilization and environmental remediation based on semiconductor nanomaterials. It is currently used in the fields of H 2 release, − CO 2 reduction, , and N 2 fixation. , Because of its high conduction band position, ZnS has a strong reduction ability as a typical transition metal sulfide . At the same time, ZnS has the advantages of being non-toxic, easy preparation, low cost, and outstanding environmental compatibility.…”

Hierarchical Co0.85Se‐CdSe/MoSe2/CdSe Sandwich‐Like Heterostructured Cages for Efficient Photocatalytic CO2 Reduction

“…[ 16 ] Moreover, constructing heterostructured photocatalysts by coupling MoSe 2 with other semiconductors is considered to be an effective strategy to enhance photocatalytic activity. [ 17 ] Inspired by these findings, it is expected to controllably construct MoSe 2 ‐based multi‐junction metal selenide heterostructures for photocatalytic CO 2 generation.…”