Newly constructed Z-scheme Cu2ZnSnS4/BiOBr heterostructure for high-efficient photocatalytic applications

Zhang, Xuqiang; Lü, Qi; Jian, Lijuan; Wei, Wenbin; Zhang, Zhilu; Luo, Zhengjun; Zhao, Yun; Chen, Jiangtao; Li, Yan

doi:10.1016/j.colsurfa.2023.131123

Cited by 8 publications

(2 citation statements)

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“…The XRD spectrum in Fig. 7b shows there is minimal change in the structural integrity 57,58 . Hence, the synthesized TpTt, as a reusable, efficient photocatalyst, holds considerable promise for practical applications.…”

Section: Reusability and Stabilitymentioning

confidence: 99%

Peroxymonosulfate enhanced photocatalytic degradation of organic dye by metal-free TpTt-COF under visible light irradiation

Xu,

Liu,

Liu

et al. 2024

Sci Rep

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Recently, the activation of persulfate (PDS) by non-metallic photocatalysts under visible light has attracted significant interest in applications in environmental remediation. This study presents a pioneering investigation into the combined application of the TpTt-COF and PMS for visible light degradation of organic dyes. Synthesized orange TpTt-COF monomers exhibit exceptional crystallinity, a 2D structure, and notable stability in harsh conditions. The broad visible light absorption around a wavelength of 708 nm. The TpTt-COF emerges as a promising candidate for photocatalytic dye degradation. The study addresses high charge recombination in the TpTt-COF, highlighting the crucial role of its electron donor and acceptor for the PMS activation. Comparative analyses against traditional photocatalytic materials, such as the metal-free carbon-based material g-C3N4 and transition metal-containing TiO2, demonstrate TpTt-COF's superior performance, generating diverse free radicals. In simulated experiments, the TpTt-COF's degradation rate surpasses PMS-combined g-C3N4 by 13.9 times. and 1.6 times higher than the TpTt-COF alone. Remarkably, the TpTt-COF maintains high activity under harsh environments. Investigations into the degradation mechanism and the TpTt-COF's reusability reveal its efficiency and stability. Under visible light, TpTt-COF facilitates efficient electron–hole separation. Combining the TpTt-COF with PMS produces various radicals, ensuring effective separation and a synergistic effect. Radical quenching experiments confirm the pivotal role of O2-· radicals, while ·OH and SO4-· radicals intensify the degradation. After five cycles, TpTt-COF maintains an impressive 83.2% degradation efficiency. This study introduces an efficient photocatalytic system mediated by PMS and valuable insights into governing mechanisms for organic pollutant degradation in water environments.

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Section: Reusability and Stabilitymentioning

confidence: 99%

Peroxymonosulfate enhanced photocatalytic degradation of organic dye by metal-free TpTt-COF under visible light irradiation

Xu,

Liu,

Liu

et al. 2024

Sci Rep

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“…Architecting heterojunctions is one of the most popular strategies to addressing this issue. Nowadays, various BiOBr-based heterojunctions have been architected with other semiconductor materials to inhibit e – –h + pair recombination and achieve high-efficiency photodegradation of organic pollutants, including S-scheme (BaFe 12 O 19 /BiOBr and P-doped g-C 3 N 4 /BiOBr), Z-scheme (Cu 2 ZnSnS 4 /BiOBr), type-II (BiOBr@ZnIn 2 S 4 and BiOBr/Bi 3 O 4 Br), and p-n (BiOBr/α-Bi 2 O 3 and BiOBr/ZnO) heterojunctions. In a heterojunction, the mismatched Fermi levels of the distinct semiconductors can promote spatial separation of the photogenerated e – –h + pairs at their contact interfaces.…”

Section: Introductionmentioning

confidence: 99%

Photocatalysis Meets Piezoelectricity in a Type-I Oxygen Vacancy-Rich BaTiO₃/BiOBr Heterojunction: Mechanism Insights from Characterizations to DFT Calculations

Xu,

Shan

et al. 2024

Inorg. Chem.

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It is a challenging task to design a piezoelectric photocatalyst with excellent performance under mechanical agitation instead of ultrasonic irradiation. Integrating vacancy defects into a heterojunction seems to be an effective strategy for synergistically increasing its piezo-photocatalytic performance. For this goal, a two-step hydrothermal method was adopted to architect a type-I oxygen-vacancy-rich BaTiO3/BiOBr heterojunction to surge the degradation of Rhodamine B (RhB) under the combined action of simulated sunlight irradiation and mechanical agitation. Various instrumental techniques demonstrated the formation of a BaTiO3/BiOBr heterojunction with high crystallinity. The existence of surface oxygen vacancies was confirmed by XPS and EPR tests. PFM results manifested that this heterojunction had excellent piezoelectric properties, with a piezoelectric response value of 30.31 pm V–1. Comparative experiments indicated that RhB degradation efficiency under piezo-photocatalysis over this heterojunction largely exceeded the total sum of those under piezocatalysis and photocatalysis. h+, ·O2 –, and 1O2 were the dominant reactive species for RhB degradation. The improved separation efficiency of photogenerated charges was verified by electrochemical measurements. DFT calculations indicated that the polarization of BaTiO3 could affect the electronic band structure of BiOBr. This work will provide comprehensive insights into piezo-photocatalytic mechanism at a microcosmic level and help to develop new-styled piezoelectric photocatalysts.

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CZTS (Cu₂ZnSnS₄)‐based Nanomaterials in Photocatalytic and Hydrogen Production Applications: A Recent Progress towards Sustainable Environment

Tanaya Das,

Dutta,

Gaurav

et al. 2023

Chemistry An Asian Journal

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A variety of unique compounds have been examined to accommodate the current demand for useful multi‐functional nanomaterials, copper‐based quaternary CZTS semiconductors are one of them. Due to their special characteristic features like non‐toxicity, cheap, and abundance, they have been recommended in recent literature for various applications. Apart from individual CZTS, different hetero‐structures have also been prepared with different compounds which is well discussed and elaborated in this article. Additionally, their preparation methods, properties, and application viability have also been discussed comprehensively. The application of CZTS such as photocatalytic dye degradation and hydrogen evolution reaction has been elaborated on in this article identifying their benefits and challenges to give readers a thorough visualization. Apart from that, challenges reported in studies, a few approaches are also mentioned to possibly counter them.

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Newly constructed Z-scheme Cu2ZnSnS4/BiOBr heterostructure for high-efficient photocatalytic applications

Cited by 8 publications

References 50 publications

Peroxymonosulfate enhanced photocatalytic degradation of organic dye by metal-free TpTt-COF under visible light irradiation

Peroxymonosulfate enhanced photocatalytic degradation of organic dye by metal-free TpTt-COF under visible light irradiation

Photocatalysis Meets Piezoelectricity in a Type-I Oxygen Vacancy-Rich BaTiO₃/BiOBr Heterojunction: Mechanism Insights from Characterizations to DFT Calculations

CZTS (Cu₂ZnSnS₄)‐based Nanomaterials in Photocatalytic and Hydrogen Production Applications: A Recent Progress towards Sustainable Environment

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Newly constructed Z-scheme Cu2ZnSnS4/BiOBr heterostructure for high-efficient photocatalytic applications

Cited by 8 publications

References 50 publications

Peroxymonosulfate enhanced photocatalytic degradation of organic dye by metal-free TpTt-COF under visible light irradiation

Peroxymonosulfate enhanced photocatalytic degradation of organic dye by metal-free TpTt-COF under visible light irradiation

Photocatalysis Meets Piezoelectricity in a Type-I Oxygen Vacancy-Rich BaTiO3/BiOBr Heterojunction: Mechanism Insights from Characterizations to DFT Calculations

CZTS (Cu2ZnSnS4)‐based Nanomaterials in Photocatalytic and Hydrogen Production Applications: A Recent Progress towards Sustainable Environment

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Photocatalysis Meets Piezoelectricity in a Type-I Oxygen Vacancy-Rich BaTiO₃/BiOBr Heterojunction: Mechanism Insights from Characterizations to DFT Calculations

CZTS (Cu₂ZnSnS₄)‐based Nanomaterials in Photocatalytic and Hydrogen Production Applications: A Recent Progress towards Sustainable Environment