Partial decomposition of NaBiO3 to δ-Bi2O3/NaBiO3 and α-Bi2O3/NaBiO3 heterojunctions in aqueous HAc solution respectively with good adsorption ability and photocatalytic performance

Su, Shenghuan; Han, Qiaofeng; Shen, Zichen; Wang, Xin; Zhu, Jun

doi:10.1016/j.matchemphys.2019.02.068

Cited by 13 publications

(4 citation statements)

References 39 publications

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“…Upon oxidation, the Bi 5d and Bi 4f doublet signals for both BiOX* phases slightly shift (∼0.3 eV) to higher binding energy indicative of a slight decrease of the electron density at the Bi site (Figure , green color; Figure S11). One may believe that such a small shift is rather due to a distortion of the oxygen layers upon oxidation that results in four different Bi–O bond lengths in the oxidized BiOX* phases, rather than from the oxidation of Bi 3+ in Bi 5+ that will lead to a shift at least greater than 1 eV . More specifically, the Bi–O bond lengths increase from 2.31 to 2.35 Å and from 2.33 to 2.38 Å, as both CuBiOX is oxidized to BiOX* for S and Se, respectively (Figure S12 and Table S9).…”

Section: Resultsmentioning

confidence: 99%

“…One may believe that such a small shift is rather due to a distortion of the oxygen layers upon oxidation that results in four different Bi−O bond lengths in the oxidized BiOX* phases, rather than from the oxidation of Bi 3+ in Bi 5+ that will lead to a shift at least greater than 1 eV. 25 More specifically, the Bi−O bond lengths increase from 2.31 to 2.35 Å and from 2.33 to 2.38 Å, as both CuBiOX is oxidized to BiOX* for S and Se, respectively (Figure S12 and Table S9). During reduction, the Bi 4f peak recovers to its pristine position, with, in addition, the appearance of a new reduced Bi peak at low binding energy (blue color), the amount of which is higher for X = S than for X = Se (Figure 5) in line with higher lithiation in sulfide as compared to that in selenide to prepare LiBiOX (ex situ XRD results discussed subsequently).…”

Section: ■ Resultsmentioning

confidence: 99%

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Electrochemical Exploration of Layered Cu-Based Oxychalcogenides Obtained Topochemically via Anionic Redox and Displacement Reaction

et al. 2023

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Li-rich oxides, operating partially on high-voltage anionic redox, permit energy densities larger than electrode materials relying solely on transition-metal redox. On the contrary, Li-rich sulfides present a lower hysteresis but operate at a lower voltage. Oxysulfide electrodes, if adequately designed, can bridge this gap and offer high energy density with a minor penalty of hysteresis or capacity. Tetragonal-layered CuMOX (M = Bi/La, X = S/Se) chalcogenides are explored in this direction, and we found that Cu can be extracted at room temperature both electrochemically and chemically with different outcomes, some of which lead to new layered monoclinic bismuth “oxyperchalcogenide” oxidized phases, BiOX*, with dimerized S/Se. Moreover, we show that these new BiOX* phases can insert lithium to form new tetragonal-layered LiBiOX phases, isostructural to pristine CuBiOX. Both the CuBiOX and BiOX* phases are shown to insert four lithium ions via conversion and intercalation–conversion reactions, respectively. Further, we demonstrate the importance of the host cation on the above insertion reactivity by replacing Bi with La to produce a new layered tetragonal phase Cu1–x Li x LaOS. The encountered different reaction pathways are rationalized by theoretical calculations. This work shows that Cu-based layered oxychalcogenides can offer rich hunting grounds for new metastable electrochemically active layered materials.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Resultsmentioning

confidence: 99%

Electrochemical Exploration of Layered Cu-Based Oxychalcogenides Obtained Topochemically via Anionic Redox and Displacement Reaction

et al. 2023

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“…And the α-BO strong diffraction peaks at 2θ = 27.5 °, 33.4 °, 46.5 ° are corresponding to (120), (200), and (223) crystal planes, respectively, for the monoclinic α-Bi2O3 (ICSD card No. 72-0398) [34]. For the BCs composites, characteristic peaks for α-BO and CS1 were both observed, suggesting that the two phases of α-BO and CS1 coexist in the prepared samples.…”

Section: Phase Composition and Micromorphology Analysismentioning

confidence: 92%

High-Performance α-Bi<sub>2</sub>O<sub>3</sub>/CdS Heterojunction Photocatalyst: Innovative Design, Electrochemical Performance and DFT Calculation

Lin

Shan

Guo

et al. 2022

JNanoR

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Heterojunction semiconductor photocatalysis is an auspicious technique for clear up organic pollutants from water, and have been of valuable strategy in the area of photocatalysis. Herein, electrophoretic deposition procedure was used to prepare α-Bi2O3/CdS type-Ⅱ heterojunction photocatalysts. The results of PL, Raman, and EIS show that there is a heterojunction effect in α-Bi2O3/CdS, which is propitious to improve the separation efficiency of photogenerated electron-hole pairs. The DFT calculation reveals that the work function of CdS (4.57 eV) is higher than that of α-Bi2O3 (3.37 eV), which facilitates the migrating of e- from the CB of α-Bi2O3 to the CB of CdS, and the migrating of h+ from the VB of CdS to the VB of α-Bi2O3, thus the e--h+ pairs with high redox ability are retained. The performances were assessed by degrading methyl orange (MO), acid magenta under simulated visible light irradiation. Under simulated visible light irradiation, BC45 composite exhibited the highest degradation efficiency of 87% (MO) and 81% (acid fuchsin) for 4 h, which was about 2 times higher than that of CdS (MO) and (acid fuchsin). It is believed that the dual characteristics of H2O wettability and dye adsorption performance in α-Bi2O3/CdS composites promote photocatalytic process compared with single CdS and α-Bi2O3. The study could provide new insights to develop efficiently capable photocatalysts of the α-Bi2O3/CdS composites.

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“…[ 85 ] Our group prepared Bi 2 O 3 /NaBiO 3 heterojunctions through the partial decomposition of NaBiO 3 in aqueous acetic acid (HAc) solution at room temperature. [ 86 ] The phase structures of Bi 2 O 3 could be tuned by the added HAc amount. The composite α‐Bi 2 O 3 /NaBiO 3 was obtained in 20 μL of HAc (pH = 5.0) by reacting 20 min.…”

Section: M(bio3)n‐based Photocatalysts (N = 1 M = Li Na K and Ag; N =...mentioning

confidence: 99%

A Comprehensive Review on Non‐Trivalent Bismuth‐Based Materials: Structure, Synthesis, and Strategies for Improving Photocatalytic Performance

Han,

Ding,

Wang

2023

Solar RRL

Self Cite

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Bi‐based semiconducting materials have received tremendous attention due to their availability, non/low toxicity, ecological friendship, rich chemical forms, and good visible‐light‐driven photocatalytic performance. As compared to the commonly investigated trivalent bismuth (Bi(III))‐based photocatalysts, non‐trivalent bismuth‐based materials (NTBBMs), such as BiO2−x, Bi2O4−x, Bi4O7, NaBiO3, and so on, exhibit excellent visible‐light‐ and even full‐spectrum‐driven photocatalytic activity as they hold narrow bandgap, suitable positions of conduction band and valence band, and relatively redox‐sensitive structures. In this review, it is attempted to summarize the recent progress in the preparation, microstructures, and modification strategies of various NTBBMs‐based photocatalysts. At the end, the advantages and disadvantages of NTBBMs‐based photocatalysts and future perspectives are presented.

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Partial decomposition of NaBiO3 to δ-Bi2O3/NaBiO3 and α-Bi2O3/NaBiO3 heterojunctions in aqueous HAc solution respectively with good adsorption ability and photocatalytic performance

Cited by 13 publications

References 39 publications

Electrochemical Exploration of Layered Cu-Based Oxychalcogenides Obtained Topochemically via Anionic Redox and Displacement Reaction

Electrochemical Exploration of Layered Cu-Based Oxychalcogenides Obtained Topochemically via Anionic Redox and Displacement Reaction

High-Performance α-Bi<sub>2</sub>O<sub>3</sub>/CdS Heterojunction Photocatalyst: Innovative Design, Electrochemical Performance and DFT Calculation

A Comprehensive Review on Non‐Trivalent Bismuth‐Based Materials: Structure, Synthesis, and Strategies for Improving Photocatalytic Performance

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