The synthesize of lanthanide doped BiVO4 and its enhanced photocatalytic activity

Gao, Xiaoming; Wang, Zihang; Zhai, Xiang; Fu, Feng; Li, Wenhong

doi:10.1016/j.molliq.2015.06.058

Cited by 34 publications

(8 citation statements)

References 36 publications

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“…However, wide band gap (3.2 eV) of TiO 2 caused researchers to reduce band gap of photocatalyst material which exposed to visible light for destruction of organic dyes. A series of compounds with low band gap are vanadates such as BiVO 4 [4,5], FeVO 4 [6,7], AgVO 3 [8,9], Ag 3 VO 4 [10,11], Cu 3 V 3 O 8 [12,13] and Zn 3 V 2 O 8 [14,15]. Cobalt vanadate, as one of the most important family of vanadate materials, have suitable band gap for the destruction of pollutants.…”

mentioning

confidence: 99%

Size controllable synthesis of cobalt vanadate nanostructures with enhanced photocatalytic activity for the degradation of organic dyes

Ghiyasiyan-Arani

Masjedi-Arani

Salavati‐Niasari

2016

Journal of Molecular Catalysis A: Chemical

104

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Different types of cobalt vanadate nanostructures such as Co 3 V 2 O 8 , Co 2 V 2 O 7 and CoV 2 O 6 have been successfully prepared via a simple solid-state method. For the first time, cobalt vanadate nanostructures were synthesized via Schiff-base ligand and vanadyl sulfate as a capping agent and vanadium source, respectively. The effect of a Schiff-base ligand (N,N-Bis (salicylaldehyde) ethylenediamine = H 2 salen) as a capping agent, molar ratio of Co: H 2 salen and Co:V on type of products, morphology and size of cobalt vanadate nanoparticles was investigated to reach optimum condition. The as-prepared nanostructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmittance electron microscopy (TEM), Fourier transform infrared (FT-IR) spectra, energy dispersive X-ray microanalysis (EDX) and ultraviolet-visible (UV-Vis) spectroscopy. This work is the first study on photocatalytic activity of cobalt vanadate nanostructures in different conditions. The influence of different parameters such as type of cobalt vanadate nanostructures, type of dye, size of particles and nanostructures dosage as a catalyst on photocatalytic activity of samples were studied.

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mentioning

confidence: 99%

Size controllable synthesis of cobalt vanadate nanostructures with enhanced photocatalytic activity for the degradation of organic dyes

Ghiyasiyan-Arani

Masjedi-Arani

Salavati‐Niasari

2016

Journal of Molecular Catalysis A: Chemical

104

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“…Additionally, Gao et al prepared Nd-doped BiVO 4 composite with two-dimensional (2D) long rod-shaped structures, which is confirmed by the SEM image ( Figure 3a). [70] It can be found that 1D long rod-shaped particles appear to have high crystallinity and display mainly thin particles with borders of several hundred nanometers. The results of photocatalytic oxidation desulfurization showed that after 210 min of visible light irradiation, the photocatalytic desulfurization rate of TH by Nd-BiVO 4 could reach 90.8 %, which is 2 times higher than that of bare BiVO 4 ( Figure 3b).…”

Section: Metal Dopingmentioning

confidence: 99%

“…Recently, g-C 3 N 4 and other metal oxide composites have been used for oxidation desulfurization, including TiO 2 /g- [70] C 3 N , [50] MoO 2 /g-C 3 N 4 , [73] g-C 3 N 4 /SnO 2 , [74] and WO 3 /g-C 3 N 4 nanocomposites. [75] Wang et al presented a two-step method to synthesize TiO 2 /g-C 3 N 4 with TiO 2 nanoparticles successfully deposited on the surface of g-C 3 N 4 ( Figure 4a).…”

Section: Hybrid Couplingmentioning

confidence: 99%

Desulfurization through Photocatalytic Oxidation: A Critical Review

et al. 2020

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Fuel oil, the most important strategic resource, has been widely used in industrial applications. However, the sulfur‐containing compounds in fuel oil also present humanity with huge environmental issues and health concerns due to the hazardous combustion waste. To address this problem, the low vulcanization of fuel production technology has been intensively explored. Compared with traditional hydrodesulfurization technology, the newly emerged photocatalytic desulfurization has the advantages of milder operating conditions, lower energy consumption, and higher efficiency, holding great prospect to achieve deep desulfurization. Though great efforts have been made, the desulfurization catalysts still suffer from inferior light absorption, fast recombination of photocarriers, and poor structure modification. This Review summarizes recent development of photocatalytic desulfurization, including the desulfurization principle, current desulfurization challenges, and corresponding solutions. Particularly, the roles of defect engineering, hybrid coupling, and structure modifications in the enhancement of photocatalytic performance are emphasized. In addition, the photocatalytic desulfurization mechanism is also introduced with the .OH and .O2− radicals as main active species. Finally, some perspectives on the photocatalytic desulfurization are provided, which can further optimize the desulfurization efficiency and guide future photocatalyst design.

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“…Current research explores VLA materials that possess narrower effective bandgaps and possess conduction and valence bands suitably positioned with respect to the redox potentials of probes toward environmental remediation or production of high‐value chemicals. Among solids investigated as prospective VLAs are various oxides, non‐oxides, and formation of composites containing bismuth: for instance, bismuth oxybromides, oxyiodides, and oxychlorides, and bismuth tungstates, ferrates and vanadates, along with strontium and calcium [29 − 32] bismuthates, together with such binary combinations as Bi 5 O 7 I/Bi 2 O 3 , Bi 2 WO 6 /TiO 2 , CaBi 6 O 10 /Bi 2 O 3, doped Au/BiOCl@m‐SiO 2 core‐shell systems, Pt/BiFeO 3 , and Nd‐doped BiVO 4 …”

Section: Introductionmentioning

confidence: 99%

Calcium Bismuthate Nanoparticulates with Orthorhombic and Rhombohedral Crystalline Lattices: Effects of Composition and Structure on Photoactivity

et al. 2017

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Calcium bismuthate nanoparticles with orthorhombic and rhombohedral crystal lattices were synthesized and characterized by various techniques. The syntheses caused the formation of oxygen and cationic vacancies in bismuth‐deficient samples. Heat treatment of samples with anionic vacancies led to thermal annealing of oxygen vacancies in ambient air; the annealing process was reversible. Oxygen vacancies in Bi‐deficient CaBi6O10 governed the optical absorption beyond the fundamental absorption edge at E(hν) < Ebg ≈ 2.5 eV. Bandgap energies of the bismuthates with orthorhombic and rhombohedral lattices were 2.51 eV prior to annealing and 2.47 eV after annealing at 350 °C. The trend in photoactivity toward the degradation of methylene blue dye under visible light showed that the photoactivity of the orthorhombic samples (1‐3) increased with a decrease in the [Ca]:[Bi] ratio (1.0:6.3 to 1.0:4.3); the sample with lowest ratio (1.0:4.3) displayed highest photoactivity. By contrast, the rhombohedral samples (4‐6) showed increased photoactivity with increase in the number of Bi atoms; sample with highest ratio (1.0:6.3) displayed highest photoactivity.

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The synthesize of lanthanide doped BiVO4 and its enhanced photocatalytic activity

Cited by 34 publications

References 36 publications

Size controllable synthesis of cobalt vanadate nanostructures with enhanced photocatalytic activity for the degradation of organic dyes

Size controllable synthesis of cobalt vanadate nanostructures with enhanced photocatalytic activity for the degradation of organic dyes

Desulfurization through Photocatalytic Oxidation: A Critical Review

Calcium Bismuthate Nanoparticulates with Orthorhombic and Rhombohedral Crystalline Lattices: Effects of Composition and Structure on Photoactivity

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