Fabrication of hexagonal/cubic tungsten oxide homojunction with improved photocatalytic activity

Kong, Yueqi; Sun, Hongqi; Zhao, Xian; Gao, Baoyu; Fan, Weiliu

doi:10.1016/j.apcata.2015.05.015

Cited by 46 publications

(21 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, 1D morphologies retain their shape after heat treatment (Figure b). According to XRD patterns and other results reported previously in the literature, these morphologies can be attributed to tungsten bronze‐type structures . Therefore, heat‐treated catalysts, which exhibit a mixture of both tungsten bronze and m‐WO 3 phases, show both 1D structures and platelet‐shaped particles (Figure c).…”

Section: Resultssupporting

confidence: 68%

Influence of Phase Composition of Bulk Tungsten Vanadium Oxides on the Aerobic Transformation of Methanol and Glycerol

et al. 2018

View full text Add to dashboard Cite

A series of W-V-O catalysts with different m-WO 3 and h-WO 3 phase contents were hydrothermally synthesized by employing different tungsten, vanadium, and ammonium precursors and characterized by powder XRD, N 2 adsorption, SEM, X-ray energy-dispersive spectroscopy, thermogravimetric analysis, Raman and FTIR spectroscopy, NH 3 temperature programmed desorption, H 2 temperature-programmed reduction, and XPS. Finally, the acid/redox properties were analyzed by using aerobic transformation of methanol as a characterization reaction. A correlation between phase composition as well as acid and redox properties was observed, which were correlated to the catalytic performance of the title materials in a one-pot [a]

show abstract

Section: Resultssupporting

confidence: 68%

Influence of Phase Composition of Bulk Tungsten Vanadium Oxides on the Aerobic Transformation of Methanol and Glycerol

et al. 2018

View full text Add to dashboard Cite

show abstract

“…This kind of phase junction constructed by the different phases of the same semiconductor has attracted much attention due to its simplicity, controllability and great photocatalytic activity. [26] [13] Tungsten oxide with a band gap of 2.5-2.8 eV is an attractive visible-light-sensitive photocatalyst in organic compounds decomposition, water splitting, and CO 2 photoreduction. [26][27][28] It is also a kind of polymorph semiconductor which has many crystal phases including tetragonal, orthorhombic, monoclinic, hexagonal, triclinic and especially abundant hydrates (such as WO 3 •2H 2 O, WO 3 •H 2 O, WO 3 •0.33H 2 O and so on).…”

Section: Introductionmentioning

confidence: 99%

“…However, the photocatalytic activity dependence on the phase junction of tungsten oxides is still preliminarily investigated. [6,26,29,30] Since one-dimensional (1D) nanostructure-based phase junction takes the advantages of 1D nanostructure in shortening the electron diffusion length and enhancing the light absorption, [31,32] fabricating 1D tungsten oxide phase junction should be a desirable strategy. The 1D phase junction was commonly constructed by one phase encapsulating the 1D phase to form the 1D core-shell structure.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of vertical orthorhombic/hexagonal tungsten oxide phase junction with high photocatalytic performance

Tang

Zhang

et al. 2017

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

The common one dimensional (1D) core-shell phase junction usually cannot fully utilize the separated charges because one phase is encapsulated inside, which leads to the incomplete release of the electrons or holes. Here, a unique vertical 1D/1D tungsten oxide phase junction constructed by orthorhombic WO 3 •0.33H 2 O (o-WO 3 •0.33H 2 O) nanorods and hexagonal WO 3 (h-WO 3) nanowires in the sunflower-like structure was fabricated via a facile one-step hydrothermal method. The nanorods and the nanowires vertically intersect at the endpoint to construct the vertical 1D/1D phase junction with another end exposed outside. This structure ensures that both two phases can contact the pollutants, so as to fully release the holes and electrons that accumulate on the o-WO 3 •0.33H 2 O and h-WO 3 phase, respectively. Furthermore, the two phases are both single crystals, substantially decreasing the impediments of defects to the transport of the photogenerated charges. This novel

show abstract

“…Homojunction solar cells were also made using TiO2 nanoparticles with anatase and rutile phases (to form a p-n homojunction), thus creating efficient surface-phase junctions [122,123]. For the homojunction solar cells made of p-Ga2O3 and n-Ga2O3 nanowires [124] the charge separation phenomena in the p-n homojunction were found to be significantly enhanced by the inner electric field [125,126].…”

Section: Nanowire and Nanoparticle-based Homojunction Solar Cellsmentioning

confidence: 99%

Advances in nanostructured homojunction solar cells and photovoltaic materials

Ali

Ahmed

Luo

et al. 2020

Materials Science in Semiconductor Processing

View full text Add to dashboard Cite

show abstract

Fabrication of hexagonal/cubic tungsten oxide homojunction with improved photocatalytic activity

Cited by 46 publications

References 50 publications

Influence of Phase Composition of Bulk Tungsten Vanadium Oxides on the Aerobic Transformation of Methanol and Glycerol

Influence of Phase Composition of Bulk Tungsten Vanadium Oxides on the Aerobic Transformation of Methanol and Glycerol

Fabrication of vertical orthorhombic/hexagonal tungsten oxide phase junction with high photocatalytic performance

Advances in nanostructured homojunction solar cells and photovoltaic materials

Contact Info

Product

Resources

About