作为异相光催化剂的 SrNiO3 包晶石/CeO2 复合材料在气固体系中氧化 2-丙醇

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-08-03 DOI:10.1016/j.jphotochem.2024.115930

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引用次数: 0

摘要

SrNiO3 包晶和 CeO2 都是适用于光催化的材料。本研究描述了裸 SrNiO3 和 CeO2 以及复合材料的制备和物理化学特性，其中 CeO2 与包晶石的富集程度为复合材料中 SrNiO3 质量的 15% 至 70%。这些材料被用于在紫外-发光二极管或模拟太阳辐照下，在气固条件下对 2-丙醇进行光催化氧化。这些固体通过 XRD、SEM/EDX、N2 吸附/解吸、傅里叶变换红外光谱和紫外可见光漫反射光谱进行表征。含有 15% w/w SrNiO3 和 85% w/w CeO2 的复合材料活性最高，分别在紫外-发光二极管和模拟太阳光照射 1.5 小时或 6.0 小时后完全降解了 2-丙醇。考虑到催化剂的物理化学特性，对光催化活性结果进行了讨论。

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SrNiO3 perovskite/CeO2 composites as heterogeneous photocatalysts for the 2-propanol oxidation in gas–solid regime

Both SrNiO₃ perovskite and CeO₂ are materials suitable for photocatalytic purposes. In this work, the preparation and physicochemical characterization of bare SrNiO₃ and CeO₂ along with composites where CeO₂ was enriched with the perovskite from 15 to 70 % in mass of SrNiO₃ in the composite are described. The materials have been used for the photocatalytic oxidation of 2-propanol in gas–solid regime in the presence of UV-LED or simulated solar irradiation. The solids were characterized by XRD, SEM/EDX, N₂ adsorption/desorption and FTIR and UV–Vis diffuse reflectance spectroscopies. The composite containing 15 % w/w of SrNiO₃ and 85 % w/w of CeO₂ resulted the most active, giving rise the complete degradation of 2-propanol after 1.5 h or 6.0 h of irradiation by UV-LED and simulated solar light irradiation, respectively. Photocatalytic activity results are discussed considering the physical–chemical properties on the catalysts.

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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.