Effective photoinduced charge separation and photocatalytic activity of hierarchical microsphere-like C60/BiOCl

Ma, Ding; Zhong, Jianxin; Peng, Rufang; Li, Jianzhang; Duan, Ran

doi:10.1016/j.apsusc.2018.09.192

Cited by 87 publications

(24 citation statements)

References 60 publications

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“…Figure B shows the high crystallinity and clear crystal fringe of the sample. The crystal fringe with crystal face spacing of 0.276 nm is located between the theoretical values of the crystal face spacing of pure BiOCl and BiOBr (d BiOCl‐(110) = 0.275 nm and d BiOBr‐(110) = 0.277 nm) . The deviation of d value further confirmed the formation of solid solution.…”

Section: Resultssupporting

confidence: 82%

“…As shown in the figure, the TOC value of RhB decreased significantly, and the mineralization rate of BiOCl/Br solid solution under visible light and ultraviolet was 74.2% and 78.7%, respectively, which was significantly higher than that of 001‐BiOCl nanosheet 1.9% and 63.6%, respectively. Hence, the RhB mineralization on the “walnut‐like” BiOCl/Br solid solution is dominant, indicating that most RhB can be completely decomposed into CO 2 and H 2 O, and only a small amount of small molecular organic matter exists in the residual solution, which is consistent with the results of relevant literature …”

Section: Resultsmentioning

confidence: 96%

“…As can be seen from Figure , the BiOX compound crystallized in the tetragonal PbFCl‐type, and the space group was D 4 h 7 . BiOX has A 1g , B 1g , and E g representing three central symmetric vibration modes, all of which are composed of two distinct bands and two weak bands . Due to the symmetry vibration often results in more intense Raman band than the asymmetry vibration, therefore, for the pure BiOCl, at 59.96 cm −1 , 143.23 cm −1 belt, respectively, attributed to Bi‐Cl of A 1g stretching and A 1g stretching mode, 199.20 cm −1 weak band Raman peaks due to Bi‐Cl E g vibration mode, 386.95 cm −1 weak belt to E g by oxygen and B 1g belt movement vibration patterns of ploidy.…”

Section: Resultsmentioning

confidence: 99%

“…Second, in 001‐BiOCl nano and “walnut‐like” BiOCl/Br solid solution in the visible light and ultraviolet light catalytic system, respectively, to be joined the 1,4‐benzoquinone (BQ), ammonium oxalate (AO) and isopropyl alcohol (IPA) three capture agent to ·O 2 − , ·OH and h + capture experiment was carried out to examine the possible active species in the photocatalytic system . Results as shown in Figure C, three kinds of trapping agent were joined, reducing the “walnut‐like” the activity of the 001‐BiOCl and the BiOCl/Br solid solution, which shows ·O 2 − , ·OH and h + are the reaction of the main species.…”

Section: Resultsmentioning

confidence: 99%

“…However, BiOCl is a wide bandgap semiconductor with a bandgap of 3.19 to 3.44eV and a low utilization rate of visible light . For this reason, researchers have explored various modification methods to optimize visible light, such as morphology regulation, ion doping, semiconductor and composite . A lot of literatures have shown that doping of nonmetallic elements such as F, Br, I, C, N, and S can effectively enhance the photocatalytic performance of BiOCl semiconductors .…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of “walnut‐like” BiOCl/Br solid solution photocatalyst by electrostatic self‐assembly method

et al. 2019

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Summary In this paper, under the control strategy of surface charge of BiOCl photocatalyst and the electrostatic adsorption of anions and cations in potassium bromide (KBr) and polyvinylpyrrolidone (PVP), the self‐assembly of “walnut‐like” BiOCl/Br solid solution nanophotocatalyst at a lower temperature water bath was proposed for the first time. X‐ray diffraction (XRD), Raman, scanning electron microscopy (SEM), high‐resolution transmission electron microscopy (HRTEM), energy‐dispersive system (EDS), X‐ray photoelectron spectroscopy (XPS), Brunauer‐Emmett‐Teller (BET), UV‐Vis, photoluminescence spectroscopy (PL) and Mott‐Schottky curve, transient photocurrent densities, and electrochemical impedance spectroscopy (EIS) were used to analyze the properties of materials, including its morphology, element distribution and chemical states, specific surface area, electrochemical property, and photogenic charge transfer. Based on the degradation performance of RhB dye wastewater and phenol in visible and ultraviolet light, and the band structure of BiOCl/Br solid solution, the reason for the improved photocatalytic activity was deeply discussed, and the possible degradation mechanism was also put forward. The above results show that Br− can be inserted into the crystal lattice of BiOCl under the effect of electrostatic adsorption to form solid solution by the interaction between atomic orbitals, which not only reduces the bandgap width but also improves the separation and mobility of photogenic electrons and holes, causing the absorbed light to shift red to the visible region. In addition, when the nBr−/nCl− = 0.67, “walnut‐like” BiOCl/Br solid solution was formed, and this kind of special core‐shell structure not only can increase the specific surface area, increase the number of active sites, but also can make the light reflect and refract many times in the cavity and further increase the utilization rate of light energy, and then the best photocatalytic activity was achieved. This study provides an new method to enhance the photocatalytic performance of BiOCl and be conducive to the development of modern material science.

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Section: Resultssupporting

confidence: 82%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis of “walnut‐like” BiOCl/Br solid solution photocatalyst by electrostatic self‐assembly method

et al. 2019

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C₆₀ and Derivatives Boost Electrocatalysis and Photocatalysis: Electron Buffers to Heterojunctions

Xu,

Wang,

et al. 2023

Advanced Energy Materials

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Buckminsterfullerene (C60) and derivatives are significant in the synthesis of efficient electrocatalysts and photocatalysts. This is because of electron acceptor properties and distinctive heterostructure(s) and physicochemical characteristics. High‐performance electrocatalysts and photocatalysts are important therefore in conversions for clean energy. Here a critical assessment of advances in use of C60 and derivatives as heterostructures and “electron buffers” in catalysts are reported. Methodologies for preparing C60 composite catalysts are assessed and categorized and microscopic mechanisms for boosting catalytic performance through C60 and derivatives in important catalytic materials including, semiconductors, carbon‐based metal‐free materials, metal nanoclusters, single atoms, and metal–organic skeletons are established. Important characterizations used with C60 and derivative composites are contrasted and assessed and practical challenges to development are determined. A prospective on future directions and likely outcomes in development of high efficiency electrocatalysts and photocatalysts is provided. It is concluded that C60 and derivatives are advantageous for advanced electrocatalysts and photocatalysts with high structural integrity and boosted electron transport. The findings are expected to be of interest and benefit to researchers and manufacturers for formation of heterostructures and electron buffer areas for significantly boosted catalytic performance.

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Recent Advances and Applications of Modified-Semiconductor Photocatalyst in Pollutant Degradation

Chen,

Zhai,

Bao

et al. 2024

Advances in Material Research and Technology

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Effective photoinduced charge separation and photocatalytic activity of hierarchical microsphere-like C60/BiOCl

Cited by 87 publications

References 60 publications

Synthesis of “walnut‐like” BiOCl/Br solid solution photocatalyst by electrostatic self‐assembly method

Synthesis of “walnut‐like” BiOCl/Br solid solution photocatalyst by electrostatic self‐assembly method

C₆₀ and Derivatives Boost Electrocatalysis and Photocatalysis: Electron Buffers to Heterojunctions

Recent Advances and Applications of Modified-Semiconductor Photocatalyst in Pollutant Degradation

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Effective photoinduced charge separation and photocatalytic activity of hierarchical microsphere-like C60/BiOCl

Cited by 87 publications

References 60 publications

Synthesis of “walnut‐like” BiOCl/Br solid solution photocatalyst by electrostatic self‐assembly method

Synthesis of “walnut‐like” BiOCl/Br solid solution photocatalyst by electrostatic self‐assembly method

C60 and Derivatives Boost Electrocatalysis and Photocatalysis: Electron Buffers to Heterojunctions

Recent Advances and Applications of Modified-Semiconductor Photocatalyst in Pollutant Degradation

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C₆₀ and Derivatives Boost Electrocatalysis and Photocatalysis: Electron Buffers to Heterojunctions