Fabrication of novel Ag/AgVO3/WO3 homojunction/heterojunction nanomaterials with highly enhanced photocatalytic activity- Investigation on type Ӏ plus Z-scheme mechanism

Dong, Lin; Gao, Minghuan; You, Lisha; Li, Yue; Li, Zhiying; Guo, Linna; Li, Tiesheng; Liu, Minghua

doi:10.1016/j.jallcom.2020.156274

Cited by 23 publications

(2 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Quite obviously, the decreased speci c surface area of ZIF67/WO 3 compared with ZIF67 can mainly be attributed to the insertion of WO 3 inside and immobilization of the surface of the ZIF67 which is conducive to the abundant supplication of catalytical active sites. [30] Furthermore, the pore size of the three samples is dominated by mesopores with diameters ranging from 2 to 5 nm. In general, the compositional dosage of photocatalyst has vital impact on the photocatalytic activity for MB elimination.…”

Section: Uv-visible Diffuse Re Ectance Spectroscopy and Pl Analysismentioning

confidence: 94%

Insight into the Novel Z-Scheme Zif67/Wo3 Heterostructure for Improved Photocatalytic Degradation of Methylene Blue Under Visible Light

et al. 2022

View full text Add to dashboard Cite

Section: Uv-visible Diffuse Re Ectance Spectroscopy and Pl Analysismentioning

confidence: 94%

Insight into the Novel Z-Scheme Zif67/Wo3 Heterostructure for Improved Photocatalytic Degradation of Methylene Blue Under Visible Light

et al. 2022

View full text Add to dashboard Cite

“…The preceding series of triclinic (30°C), orthorhombic (330°C), monoclinic (330°C) [4] and tetragonal (740°C) were recorded in bulk WO 3 investigations [5]. WO 3 nano-semiconductors, however, typically exhibit different microstructures and properties compared to other fabrication methods under various operating conditions [6]. The crystal structure and colour of tungsten oxide nano-semiconductors are depended strongly on temperature and experimental parameters.…”

Section: Introductionmentioning

confidence: 99%

A novel study of tungsten oxide nanocrystallites as fuel additive for diesel oil

Jamil

2021

Journal of Taibah University for Science

View full text Add to dashboard Cite

In this paper, a basic solvothermal synthesis using sodium tungstate as a precursor is reported to prepare tungsten oxide (WO 3 ) particles. XRD data confirmed the highly crystalline nature. The broad peaks of XRD patterns estimated the nanocrystallites of WO 3 . The average crystallite size as was 95 nm. Scanning electron microscopy showed the morphologically cube-like particles with aggregation that was converted to larger brick-like particle of WO 3 after calcination. WO 3 was used as fuel additive in diesel oil. Fire and flash points of diesel oil were enhanced to 49°C and 54°C respectively. The calorific value was increased up to 36580 Jg −1 . Thus fuel efficiency was enhanced by use of WO 3 as an additive. The use of different concentrations of WO 3 (20, 40, 60, 80 ppm) as fuel additive has been also explored in this paper. The observed additive properties of WO 3 suggested the potential applications of such metal oxides.

show abstract

Insight into the Novel Z-Scheme ZIF67/WO3 Heterostructure for Improved Photocatalytic Degradation of Methylene Blue Under Visible Light

Zhang

Liu

et al. 2022

J Inorg Organomet Polym

View full text Add to dashboard Cite

In this work, a novel Z-scheme heterojunction of ZIF67/WO 3 nanocomposite is successfully prepared via immobilizing WO 3 on the MOFs ZIF67 and con rmed by measuring XRD, FT-IR, XPS, SEM, TEM, and EDS.UV-vis and Mott-Schottky measurements. The photocatalytic activity of the as-prepared ZIF67/WO 3 is evaluated by degrading methylene blue (MB) solution under simulated visible light irradiation. Obviously, the optimal ZIF67/WO 3 -0.3 (designated as 0.3 g addition of WO 3 ) delivers signi cant photocatalytic degradation exceeding 90% toward MB within 120 min, which is about 3.0 and 4.2 times higher than those of pure ZIF67 (30.0%) and WO 3 (21.2%), respectively. The effects of pH, initial concentration of MB, and WO 3 dosage in ZIF67/WO 3 on the photocatalytic elimination e ciency for MB degradation are also evaluated. Reactive species scavenging experiments indicated that the holes (h + ) and hydroxyl radical (•OH) are mainly responsible for MB degradation. Moreover, the probable reaction mechanism is elucidated by detecting the intermediates by performing LC-MS measurements. The excellent photocatalytic performance of the ZIF67/WO 3 is predominantly determined by the structural properties of the composite and the Z-scheme charge transfer pathway, which promote the e cient separation of photogenerated carriers and facilitate the transfer of photogenerated electrons to active sites. Therefore, it is a promising strategy by immobilizing the WO 3 on MOFs for constructing Z-scheme heterojunction to degrade the refractory organic dyes.

show abstract

Fabrication of novel Ag/AgVO3/WO3 homojunction/heterojunction nanomaterials with highly enhanced photocatalytic activity- Investigation on type Ӏ plus Z-scheme mechanism

Cited by 23 publications

References 78 publications

Insight into the Novel Z-Scheme Zif67/Wo3 Heterostructure for Improved Photocatalytic Degradation of Methylene Blue Under Visible Light

Insight into the Novel Z-Scheme Zif67/Wo3 Heterostructure for Improved Photocatalytic Degradation of Methylene Blue Under Visible Light

A novel study of tungsten oxide nanocrystallites as fuel additive for diesel oil

Insight into the Novel Z-Scheme ZIF67/WO3 Heterostructure for Improved Photocatalytic Degradation of Methylene Blue Under Visible Light

Contact Info

Product

Resources

About