Facile preparation of MgAl2O4/CeO2/Mn3O4 heterojunction photocatalyst and enhanced photocatalytic activity

Li, J.; Wang, Shifa; Sun, Guangai; Gao, Huajing; Yu, Xiao; Tang, Shengnan; Zhao, Xinxin; Yi, Zao; Wang, Y.; Wei, Yong

doi:10.1016/j.mtchem.2020.100390

Cited by 82 publications

(35 citation statements)

References 95 publications

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“…As the thickness of Au is much larger than that of the substrate through which the electromagnetic wave can penetrate, the transmittance of the structure is basically zero. The absorption spectrum of multilayer stacked metamaterials can be calculated by A = 1 − R [ 50 , 51 , 52 , 53 , 54 ]. As shown in Figure 2 a, the absorption spectrum is marked by red lines, and the reflectivity is represented by black lines.…”

Section: Resultsmentioning

confidence: 99%

Broadband Solar Absorber Based on Square Ring cross Arrays of ZnS

Fang

et al. 2021

Micromachines

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Solar energy is an inexhaustible clean energy. However, how to improve the absorption efficiency in the visible band is a long-term problem for researchers. Therefore, an electromagnetic wave absorber with an ultra-long absorption spectrum has been widely considered by researchers of optoelectronic materials. A kind of absorbing material based on ZnS material is presented in this paper. Our purpose is for the absorber to achieve a good and wide spectrum of visible light absorption performance. In the wide spectrum band (553.0 THz–793.0 THz) of the absorption spectrum, the average absorption rate of the absorber is above 94%. Using surface plasmon resonance (SPR) and gap surface plasmon mode, the metamaterial absorber was studied in visible light. In particular, the absorber is insensitive to both electric and magnetic absorption. The absorber can operate in complex electromagnetic environments and at high temperatures. This is because the absorber is made of refractory metals. Finally, we discuss and analyze the influence of the parameters regulating the absorber on the absorber absorption efficiency. We have tried to explain why the absorber can produce wideband absorption.

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Section: Resultsmentioning

confidence: 99%

Broadband Solar Absorber Based on Square Ring cross Arrays of ZnS

Fang

et al. 2021

Micromachines

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“…The diagonal data are obtained through our linear fitting. According to the formula, the S and FOM of the grating can be calculated [58][59][60][61]. The slope (K) of the line in Figure 8B is the S of the Si grating, whose value is 2780 nm/RIU.…”

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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“…Therefore, various avenues have been adopted to prolong the carrier lifetime by spatially separating the e À /h + pairs. [5][6][7][8] Coupling two semiconductors into heterojunctions is one of the important strategies to inhibit the recombination of photoproduced electrons and holes. [9][10][11] As expected, an internal electric field is created at the interface of the semiconductor-semiconductor heterojunctions.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Application of Ag-Decorated CuS/BaTiO3 Composite Photocatalysts for Degrading RhB

Wang

Sun

et al. 2021

Journal of Elec Materi

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Herein, binary CuS/BTO and ternary CuS/Ag/BTO composite photocatalysts have been fabricated by anchoring CuS and Ag nanoparticles onto BaTiO 3 (BTO) polyhedra. The as-prepared composite photocatalysts were characterized by means of the techniques of transmission/scanning electron microscopy, x-ray powder diffraction, ultraviolet-visible diffuse reflectance spectroscopy, x-ray photoelectron spectroscopy and photoluminescence spectroscopy. Transient photocurrent and electrochemical impedance spectroscopy measurements suggest that the ternary 5%CuS/(1%Ag/BTO) composite possesses the highest separation efficiency of electron/hole pairs. The photodegradation experiments were conducted by using simulated sunlight as the light source to decompose Rhodamine B in water solution. The 5%CuS/(1%Ag/BTO) and 5%CuS/BTO composites are demonstrated to have the highest and second highest photodegradation activity, respectively. As compared with that of bare BaTiO 3 and CuS, the photoactivity of 5%CuS/(1%Ag/BTO) is increased to 3.3 and 2.0 times, respectively. The electron/hole separation mechanism and the role of localized surface plasmon resonance of Ag nanoparticles in the dye photodegradaton were systematically investigated.

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Facile preparation of MgAl2O4/CeO2/Mn3O4 heterojunction photocatalyst and enhanced photocatalytic activity

Cited by 82 publications

References 95 publications

Broadband Solar Absorber Based on Square Ring cross Arrays of ZnS

Broadband Solar Absorber Based on Square Ring cross Arrays of ZnS

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

Photocatalytic Application of Ag-Decorated CuS/BaTiO3 Composite Photocatalysts for Degrading RhB

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