Enhanced charge carrier separation and optoelectronic properties of stable double perovskite photocatalyst and its photocatalytic and electrochemical applications

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-06-20 DOI:10.1016/j.jphotochem.2025.116543

Arif Nawaz , Tauseef Khan , Jalwa Afreeq , Adnan Khan , Nisar Ali , Haifa Zhai , Rayya Ahmed Al Balushi , Mohammad M. Al-Hinaai , Thuraya Al-Harthy , Yong Yang

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Abstract

The ultra-fast growth of different industries compensating living beings tailed with discharge of hazardous synthetic and volatile organic compounds into freshwater streams has disturbed the entire ecosystem. In current study perovskite photocatalyst has been designed and fabricated by anchoring metal cations of high and low valence state atoms. The different valences state atoms in the photocatalyst lattice serve as electron reservoir and dynamically adjust the valence state of material during photocatalytic and electrochemical applications. The fabricated perovskite was confirmed by various characterizations such as FTIR, XRD, EDX, SEM, HR-TEM. SEM analysis showing regular cubic morphology of fabricated material. The crystallinity was further confirmed by HR-TEM analysis. The calculated optical band gap from tauce’s equation lies in visible range (2.15 eV). The removal of EB dye at optimal condition was 99.21 % follows first order kinetics with R² value 0.96. Cyclic Voltammetry (CV) showed a maximum current intensity 24 uA at 2.6 nM for oxalic acid. The significance of the RSM applied model was confirmed from the ANOVA of the model with 360.78F value and a lack of fit P-value of 0.53. The statistical investigations were in good agreement between the proposed model and experimental data. The high AP value 63.04 from 4 and the low coefficient of variance (CV) value of (2.62 %) confirmed the validation of the model.

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增强载流子分离和光电子性能的稳定双钙钛矿光催化剂及其光催化和电化学应用

以向淡水溪流排放有害合成和挥发性有机化合物为代价的各种工业的超高速发展，扰乱了整个生态系统。目前研究中，钙钛矿光催化剂是通过锚定高价态和低价态原子的金属阳离子来设计和制备的。在光催化和电化学应用中，光催化剂晶格中的不同价态原子充当电子储层，并动态调节材料的价态。通过FTIR、XRD、EDX、SEM、HR-TEM等多种表征手段对制备的钙钛矿进行了表征。扫描电镜分析表明，制备的材料具有规则的立方形态。通过hrtem分析进一步证实了结晶度。由tauce方程计算得到的光学带隙位于可见光范围（2.15 eV）。最佳条件下EB染料去除率为99.21%，符合一级动力学，R2值为0.96。循环伏安法（CV）显示草酸在2.6 nM处的最大电流强度为24 uA。RSM应用模型的显著性通过对模型的方差分析得到证实，该模型的f值为360.78，p值为0.53。统计调查表明，所提出的模型与实验数据吻合良好。高AP值为63.04，方差系数（CV）值为2.62%，证实了模型的有效性。

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.