An excellent Z-scheme Ag2MoO4/Bi4Ti3O12 heterojunction photocatalyst: Construction strategy and application in environmental purification

Cheng, Tingting; Gao, Huajing; Sun, Xiaofeng; Tang, Xian; Wang, Shifa; Yi, Zao; Liu, Guorong; Wang, Xiangxian; Yang, Hua

doi:10.1016/j.apt.2021.01.039

Cited by 112 publications

(35 citation statements)

References 65 publications

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“…As shown in Figure 3, it is the wave vector matching diagram of the structure. To better understand the physical mechanism of the symmetrical gratings, electric and magnetic fields are simulated for the peak wavelength [53][54][55]. Figure 4 shows the distribution of the electric field and magnetic field at λ = 3750 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance

et al. 2021

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In this paper, using the surface plasmon and Fabry–Pérot (FP) cavity, the design of a symmetric silicon grating absorber is proposed. The time-domain finite difference method is used for simulation calculations. The basic unit structure is a dielectric grating composed of silicon dioxide, metal and silicon. Through the adjustment of geometric parameters, we have achieved the best of the symmetric silicon grating absorber. A narrowband absorption peak with an absorption rate greater than 99% is generated in the 3000–5000 nm optical band, and the wavelength of the absorption peak is λ = 3750 nm. The physical absorption mechanism is that silicon light generates surface plasmon waves under the interaction with incident light, and the electromagnetic field coupling of surface plasmon waves and light causes surface plasmon resonance, thereby exciting strong light response modulation. We also explore the influence of geometric parameters and polarization angle on the performance of silicon grating absorbers. Finally, we systematically study the refractive index sensitivity of these structures. These structures can be widely used in optical filtering, spectral sensing, gas detection and other fields.

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Section: Resultsmentioning

confidence: 99%

Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance

et al. 2021

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“…EDS is not sensitive to lighter elements. 39 The EDS elemental mapping analysis, as seen in Fig. 3(c It is noted that the physical properties of materials depend highly on their light-absorption characteristics, which are necessary to be characterized.…”

Section: Basic Characterization Analysesmentioning

confidence: 99%

Template-free synthesis of Bi₂O₂CO₃ hierarchical nanotubes self-assembled from ordered nanoplates for promising photocatalytic applications

Sun

Tang

et al. 2022

Phys. Chem. Chem. Phys.

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106

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“…For example, Asadzadeh-Khaneghah and Habibi-Yangjeh [18] fabricated a g-C 3 N 4 /carbon dot-based nanocomposite with efficient performance for the degradation of various contaminants and antibiotics. In another study, a heterojunction photocatalyst based on Ag 2 MoO 4 /Bi 4 Ti 3 O 12 nanostructures was developed capable of degrading various pollutants including various organic pollutants including methylene blue, tetrabromobisphenol A, tetracycline hydrochloride, and phenol [19]. The main mechanism for such multicomponent photocatalysts based on different SC nanoparticles is to delay the recombination of electrons and holes using a designed heterojunction.…”

Section: -Introductionmentioning

confidence: 99%

Visible-light-responsive Ag/TiO2/PVA nanocomposite for photocatalytic degradation of Cr, Ni, Zn, and Cu heavy metal ions

Dehghani

Delnavaz

2022

Preprint

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The rapid growth of industrialization has led to the uncontrolled pollution of the environment, and rapid action is needed. This study synthesized Ag/TiO2/polyvinyl alcohol (PVA) nano photocatalyst for promising light-derived photocatalytic removal of heavy metal ions. The design of experiment (DOE) was used to study the effect of important factors (pH, reaction time, and photocatalyst dosage) to maximize the final performance of the photocatalyst. In the optimized condition, the Ag/TiO2/PVA nano-photocatalyst removed more than 94% of Cr6+ in 180 minutes, and the efficiency was more than 70% for Cu2+, Zn2+, and Ni2+ metal ions. The adsorption of the heavy metal ions on the photocatalyst was described well with the Langmuir isotherm, while the pseudo-second-order linear kinetic model fitted with the experimental data. The nano-photocatalyst's stability was confirmed after maintaining its performance for five successive runs. The enhanced photocatalytic activity for the heavy metal ions removal can be attributed to the presence of metallic silver nanoparticles (electron transfer and plasmonic fields mechanisms) and PVA, which delayed the recombination of electron-hole. The synthesized ternary Ag/TiO2/PVA nano-photocatalyst showed promising performance for the elimination of heavy metal ions and can be used for environmental remediation purposes.

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An excellent Z-scheme Ag2MoO4/Bi4Ti3O12 heterojunction photocatalyst: Construction strategy and application in environmental purification

Cited by 112 publications

References 65 publications

Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance

Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance

Template-free synthesis of Bi₂O₂CO₃ hierarchical nanotubes self-assembled from ordered nanoplates for promising photocatalytic applications

Visible-light-responsive Ag/TiO2/PVA nanocomposite for photocatalytic degradation of Cr, Ni, Zn, and Cu heavy metal ions

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An excellent Z-scheme Ag2MoO4/Bi4Ti3O12 heterojunction photocatalyst: Construction strategy and application in environmental purification

Cited by 112 publications

References 65 publications

Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance

Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance

Template-free synthesis of Bi2O2CO3 hierarchical nanotubes self-assembled from ordered nanoplates for promising photocatalytic applications

Visible-light-responsive Ag/TiO2/PVA nanocomposite for photocatalytic degradation of Cr, Ni, Zn, and Cu heavy metal ions

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Template-free synthesis of Bi₂O₂CO₃ hierarchical nanotubes self-assembled from ordered nanoplates for promising photocatalytic applications