Enhanced Pyro-Photo Catalysis of the BaTiO3/NiB Catalyst for Dye Degradation Driven by Visible Light and Cold–Hot Cycles

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2024-09-11 DOI:10.1007/s10562-024-04798-5

Mei Ma, Zhihua Liu, Jianguo Zhou

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Abstract

The decomposition mechanism of dyes under the synergistic effect of pyroelectric catalysis and photocatalysis was systematically investigated using a BaTiO₃/NiB catalyst in this paper, and the degradation efficiency of BaTiO₃/NiB was 97.5% under light and 24 cycles of hot and cold at 25 ~ 65 °C, showing high pyroelectroic catalytic RhB decomposition activity and excellent recoverability. The degradation rate constants of RhB chromophore degradation by Pyro-photocatalytic coupled were 3.2 times as high as those of photocatalysis and 11.8 times as high as those of pyroelectric catalysis. In this study, we used light-assisted electrodeposition to deposit a thin layer of amorphous NiB acid salts onto the surface of a BaTiO₃ photoelectrode aiming to explore its influence on photocharge separation and the catalytic mechanism of NiB in the context of pollutant degradation. The synergies between the pyroelectric internal field and the amorphous Ni–B acid salt thin layer during photogenerated charge separation were extensively explored in this paper, including the introduction of a port for pyroelectric polarization.

Graphical Abstract

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在可见光和冷热循环驱动下增强 BaTiO3/NiB 催化剂的热释光催化作用以降解染料

本文利用BaTiO3/NiB催化剂系统研究了热电催化和光催化协同作用下染料的分解机理，在光照和25～65 ℃冷热循环24次的条件下，BaTiO3/NiB的降解效率为97.5%，显示出较高的热电催化RhB分解活性和优异的可回收性。热光催化耦合降解 RhB 发色团的降解速率常数是光催化的 3.2 倍，是热电催化的 11.8 倍。在本研究中，我们利用光辅助电沉积技术在 BaTiO3 光电极表面沉积了一薄层无定形 NiB 酸盐，旨在探索其对光电分离的影响以及 NiB 在污染物降解方面的催化机理。本文广泛探讨了热释电内场与无定形镍硼酸盐薄膜在光生电荷分离过程中的协同作用，包括热释电极化端口的引入。

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.