High concentration of methyl orange elimination by targeted construction of an α-Bi<sub>2</sub>O<sub>3</sub>/Ph–CC–Cu Z-scheme

Jiang, Haiying; Qian, Jing; Hou, Jiawei; Tian, Meng; Bai, Yadi; Li, Chengbo

doi:10.1039/d2cy01590k

Cited by 8 publications

(2 citation statements)

References 54 publications

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“…The recombination of photoexcited carriers was revealed using steady-state photoluminescence (PL) emission spectroscopy. As shown in Figure a, the PL spectrum of ZnIn 2 S 4 displays the strongest emission peak around 470 nm at an excitation wavelength of 345 nm, demonstrating severe charge recombination . The ZNA-5 catalyst presents a lower PL intensity than bare ZnIn 2 S 4 , revealing that the intimate hierarchical contact with decreased electron migration distance can suppress charge recombination.…”

Section: Results and Discussionmentioning

confidence: 94%

“…As shown in Figure 9a, the PL spectrum of ZnIn 2 S 4 displays the strongest emission peak around 470 nm at an excitation wavelength of 345 nm, demonstrating severe charge recombination. 55 The ZNA-5 catalyst presents a lower PL intensity than bare ZnIn 2 S 4 , revealing that the intimate hierarchical contact with decreased electron migration distance can suppress charge recombination. After the incorporation of CDs in ZNA, the PL intensity of 3-CDsZNA is significantly quenched, and 3-CDsZNA presents the lowest PL intensity, consistent with the results of H 2 performance.…”

Section: Photocatalytic Mechanismmentioning

confidence: 97%

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Carbon-Dots-Modified Hierarchical ZnIn₂S₄/Ni–Al LDH Heterojunction with Boosted Charge Transfer for Visible-Light-Driven Photocatalytic H₂ Evolution

Deng

Ding

et al. 2023

Inorg. Chem.

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The construction of a heterojunction structure is considered a significant route to promote solar-driven H2 production. Herein, a CDs/ZnIn2S4/Ni–Al LDHs (CDZNA) ternary heterojunction was elaborately constructed via the in situ growth of ZnIn2S4 on Ni–Al LDHs with the incorporation of carbon dots (CDs) cocatalyst, which was used as a highly efficient catalyst for the photocatalytic H2 generation. Characterizations indicated that 2D ZnIn2S4 nanosheet homogeneously dispersed on the surface of Ni–Al LDHs fabricated an intimate hierarchical architecture and provided a high BET surface area (135.12 m2 g–1). In addition, the unique embeddable-dispersed CDs as electron mediators possessed numerous active sites and promoted the charge separation on ZnIn2S4/Ni–Al LDHs (ZNA) binary catalyst. By coupling these two features, the CDZNA catalyst exhibited a considerable H2 production rate of 23.1 mmol g–1 h–1 under visible-light illumination, which was 16.4 and 1.4 times higher than those of ZnIn2S4 and ZNA, respectively. A proposed mechanism of photocatalytic H2 production over the CDZNA catalyst was also discussed. This work provides a promising strategy to achieve highly efficient solar energy conversion in a ternary photocatalytic system.

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Section: Results and Discussionmentioning

confidence: 94%

Section: Photocatalytic Mechanismmentioning

confidence: 97%

Carbon-Dots-Modified Hierarchical ZnIn₂S₄/Ni–Al LDH Heterojunction with Boosted Charge Transfer for Visible-Light-Driven Photocatalytic H₂ Evolution

Deng

Ding

et al. 2023

Inorg. Chem.

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Efficient Photodegradation of High Concentration Dye Pollutants by 3‐OH‐Ph‐C≡C‐Cu Under Sunlight Irradiation

Hou,

Jia,

Liu

et al. 2024

Applied Organom Chemis

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This work designed and synthesized a series of functionalized copper phenylacetylides (R‐Ph‐C≡C‐Cu) for highly efficient degradation of dye pollutants with light irradiation. Different growth modes caused by the introduction of different functional groups were studied and demonstrated. Among all the prepared samples, 3‐OH‐Ph‐C≡C‐Cu performed the highest activity for methyl orange (MO) degradation under full spectrum light irradiation. Under full spectrum light and sunlight irradiation, the highest photodegradation capability of MO with the concentration of 600 mg/L can be achieved to 595.73 mg/g, which is about 30 times higher than the raw Ph‐C≡C‐Cu, 6.5 times higher than that by P25, and 18 times higher than that by g‐C3N4. It shows good universality for the conditions of basic room temperatures (20–50 °C), pH of 4–9 and the co‐existence of most ions. It also has good photodegradation effect on other dye pollutants, such as carmine, malachite green (MG), congo red (CR), and sunset yellow (SY). This highly efficient photodegradation of MO by 3‐OH‐Ph‐C≡C‐Cu is demonstrated to its strong hydrophilicity with the water contact angle of 35.1°, which results in the good contact of dye molecules on its surface. This work prepared an efficient photodegradation material and significantly improved the photodegradation capacity of dye pollutants. It is highly expected to achieve practical application in the treatment of industrial printing and dyeing wastewater.

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Applications in environmental remediation

Wang,

Zhang,

Zhu

2024

Full-Spectrum Responsive Photocatalytic Materials

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High concentration of methyl orange elimination by targeted construction of an α-Bi₂O₃/Ph–CC–Cu Z-scheme

Abstract: We anchored Ph–CC–Cu onto the surface of α-Bi2O3 nanoparticles to directionally construct Z-scheme heterojunctions, which are significantly efficient for the elimination of methyl orange with high concentration (98 mg L−1) in waste water.

Cited by 8 publications

References 54 publications

Carbon-Dots-Modified Hierarchical ZnIn₂S₄/Ni–Al LDH Heterojunction with Boosted Charge Transfer for Visible-Light-Driven Photocatalytic H₂ Evolution

Carbon-Dots-Modified Hierarchical ZnIn₂S₄/Ni–Al LDH Heterojunction with Boosted Charge Transfer for Visible-Light-Driven Photocatalytic H₂ Evolution

Efficient Photodegradation of High Concentration Dye Pollutants by 3‐OH‐Ph‐C≡C‐Cu Under Sunlight Irradiation

Applications in environmental remediation

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High concentration of methyl orange elimination by targeted construction of an α-Bi2O3/Ph–CC–Cu Z-scheme

Abstract: We anchored Ph–CC–Cu onto the surface of α-Bi2O3 nanoparticles to directionally construct Z-scheme heterojunctions, which are significantly efficient for the elimination of methyl orange with high concentration (98 mg L−1) in waste water.

Cited by 8 publications

References 54 publications

Carbon-Dots-Modified Hierarchical ZnIn2S4/Ni–Al LDH Heterojunction with Boosted Charge Transfer for Visible-Light-Driven Photocatalytic H2 Evolution

Carbon-Dots-Modified Hierarchical ZnIn2S4/Ni–Al LDH Heterojunction with Boosted Charge Transfer for Visible-Light-Driven Photocatalytic H2 Evolution

Efficient Photodegradation of High Concentration Dye Pollutants by 3‐OH‐Ph‐C≡C‐Cu Under Sunlight Irradiation

Applications in environmental remediation

Contact Info

Product

Resources

About

High concentration of methyl orange elimination by targeted construction of an α-Bi₂O₃/Ph–CC–Cu Z-scheme

Carbon-Dots-Modified Hierarchical ZnIn₂S₄/Ni–Al LDH Heterojunction with Boosted Charge Transfer for Visible-Light-Driven Photocatalytic H₂ Evolution

Carbon-Dots-Modified Hierarchical ZnIn₂S₄/Ni–Al LDH Heterojunction with Boosted Charge Transfer for Visible-Light-Driven Photocatalytic H₂ Evolution