Construction of CuBi2O4/Bi2MoO6 p-n heterojunction with nanosheets-on-microrods structure for improved photocatalytic activity towards broad-spectrum antibiotics degradation

Shi, Weilong; Li, Mingyang; Huang, Xiliu; Ren, Hongji; Tang, Yubin; Lu, Changyu

doi:10.1016/j.cej.2020.125009

Cited by 187 publications

(52 citation statements)

References 53 publications

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“…It is generally accepted that the smaller arc radius corresponds to the smaller internal transport resistance, which is beneficial to the migration and separation of photogenerated carriers. 37 Obviously, the arc radius of CoO/g-C 3 N 4 /Co 3 O 4 electrodes is smaller than those of the pure g-C 3 N 4 and CoO/g-C 3 N 4 electrodes, suggesting the ternary composite possesses excellent electronic conductivity for the separation of photoexcited charges. Figure 10 www.soci.org W Zhang et al…”

Section: Resultsmentioning

confidence: 92%

Fabrication of ternary CoO/g‐C₃N₄/Co₃O₄ nanocomposite with p‐n‐p type heterojunction for boosted visible‐light photocatalytic performance

Zhang

Shi

Sun

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: Photocatalytic water treatment by using semiconductor material with low-cost, along with green and environmental features, is the main candidate for the actual application of photocatalytic reactions. RESULTS:The ternary CoO/g-C 3 N 4 /Co 3 O 4 nanocomposite with p-n-p type heterojunction was fabricated through a one-step solvothermal method follow-up water washing process. The as-prepared CoO/g-C 3 N 4 /Co 3 O 4 nanocomposite photocatalyst exhibited high visible-light photocatalytic efficiency (92% within 80 min) during the degradation of tetracycline (TC). The degradation rate constant of CoO/g-C 3 N 4 /Co 3 O 4 nanocomposite is 0.025 min −1 , which is 8.3, 4.3 and 2.3 times higher than that of single CoO, g-C 3 N 4 and binary CoO/g-C 3 N 4 , respectively. CONCLUSION: A series of characterization experiments further confirmed that the photocatalytic performance of the synthesized CoO/g-C 3 N 4 /Co 3 O 4 composite materials was improved due to the following two points: (i) improved separation and migration ability of photo-induced electron-hole pairs, and (ii) enhanced visible light absorption range.

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Section: Resultsmentioning

confidence: 92%

Fabrication of ternary CoO/g‐C₃N₄/Co₃O₄ nanocomposite with p‐n‐p type heterojunction for boosted visible‐light photocatalytic performance

Zhang

Shi

Sun

et al. 2021

J of Chemical Tech & Biotech

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“…Based on previous related reports and analysis results, three possible degradation pathways were presented in Figure 4 . The typical functional groups of double bond, phenolic group and amine group in TCH were possess high electron density, which were easily attacked by the active species [ 38 , 39 ]. For pathway 1: the transformation (m/z = 445) from TCH to intermediate product (m/z = 433) was started by dealkylation reaction under the h + attack.…”

Section: Resultsmentioning

confidence: 99%

“…The product (m/z = 410) was attributable to the loss of C–NH 2 [ 41 ]. Pathway III: The product (m/z = 491) was formed by oxidation of double bonds, leading to the addition of hydroxyl and ketone group [ 38 ]. Then, the intermediate product further transformed into product (m/z = 433) by dehydration and product (m/z =352) via oxidation.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Jiang

Huang

Wei³

et al. 2021

Nanomaterials

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The rational design of direct Z-scheme heterostructural photocatalysts using solar energy is promising for energy conversion and environmental remediation, which depends on the precise regulation of redox active sites, rapid spatial separation and transport of photoexcited charge and a broad visible light response. The Bi2WO6 materials have been paid more and more attention because of their unique photochemical properties. In this study, S2− doped Bi2WO6-x coupled with twin crystal ZnIn2S4 nanosheets (Sov−BWO/T−ZIS) were prepared as an efficient photocatalyst by a simple hydrothermal method for the removal of tetracycline hydrochloride (TCH). Multiple methods (XRD, TEM, XPS, EPR, UV vis DRS, PL etc.) were employed to systematically investigate the morphology, structure, composition and photochemical properties of the as-prepared samples. The XRD spectrum indicated that the S2− ions were successfully doped into the Sov−BWO component. XPS spectra and photoelectrochemical analysis proved that S2− served as electronic bridge and promoted captured electrons of surface oxygen vacancies transfer to the valence band of T−ZIS. Through both experimental and in situ electron paramagnetic resonance (in situ EPR) characterizations, a defined direct Z-scheme heterojunction in S-BWO/T−ZIS was confirmed. The improved photocatalytic capability of S-BWO/T−ZIS results ascribed that broadened wavelength range of light absorption, rapid separation and interfacial transport of photoexcited charge, precisely regulated redox centers by optimizing the interfacial transport mode. Particularly, the Sov−50BWO/T−ZIS Z-scheme heterojunction exhibited the highest photodegradation rate was 95% under visible light irradiation. Moreover, this heterojunction exhibited a robust adsorption and degradation capacity, providing a promising photocatalyst for an organic pollutant synergistic removal strategy.

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“…Previous works revealed the internal eld in heterojunction could result in a shi of binding energy. 49,50 From the above-mentioned results, it seems that the produced internal eld in the heterojunction LSTO/BMO in LSTBM7 led to a rise in binding energies on the LSTO side and reduction in binding energies on the BMO side, suggesting that the internal eld direction is from LSTO to BMO.…”

Section: Elemental Valence State Analysismentioning

confidence: 95%

Photoreduction properties of novel Z-scheme structured Sr_0.8La_0.2(Ti_1−δ⁴⁺Ti_δ³⁺)O₃/Bi₂MoO₆ composites for the removal of Cr(vi)

et al. 2021

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Construction of CuBi2O4/Bi2MoO6 p-n heterojunction with nanosheets-on-microrods structure for improved photocatalytic activity towards broad-spectrum antibiotics degradation

Cited by 187 publications

References 53 publications

Fabrication of ternary CoO/g‐C₃N₄/Co₃O₄ nanocomposite with p‐n‐p type heterojunction for boosted visible‐light photocatalytic performance

Fabrication of ternary CoO/g‐C₃N₄/Co₃O₄ nanocomposite with p‐n‐p type heterojunction for boosted visible‐light photocatalytic performance

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Photoreduction properties of novel Z-scheme structured Sr_0.8La_0.2(Ti_1−δ⁴⁺Ti_δ³⁺)O₃/Bi₂MoO₆ composites for the removal of Cr(vi)

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Construction of CuBi2O4/Bi2MoO6 p-n heterojunction with nanosheets-on-microrods structure for improved photocatalytic activity towards broad-spectrum antibiotics degradation

Cited by 187 publications

References 53 publications

Fabrication of ternary CoO/g‐C3N4/Co3O4 nanocomposite with p‐n‐p type heterojunction for boosted visible‐light photocatalytic performance

Fabrication of ternary CoO/g‐C3N4/Co3O4 nanocomposite with p‐n‐p type heterojunction for boosted visible‐light photocatalytic performance

Investigation of the Kinetics and Reaction Mechanism for Photodegradation Tetracycline Antibiotics over Sulfur-Doped Bi2WO6-x/ZnIn2S4 Direct Z-Scheme Heterojunction

Photoreduction properties of novel Z-scheme structured Sr0.8La0.2(Ti1−δ4+Tiδ3+)O3/Bi2MoO6 composites for the removal of Cr(vi)

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Fabrication of ternary CoO/g‐C₃N₄/Co₃O₄ nanocomposite with p‐n‐p type heterojunction for boosted visible‐light photocatalytic performance

Fabrication of ternary CoO/g‐C₃N₄/Co₃O₄ nanocomposite with p‐n‐p type heterojunction for boosted visible‐light photocatalytic performance

Photoreduction properties of novel Z-scheme structured Sr_0.8La_0.2(Ti_1−δ⁴⁺Ti_δ³⁺)O₃/Bi₂MoO₆ composites for the removal of Cr(vi)