Tao Liu, Guangming Zhou, Bingyan Yu, Lihu Fu, Simiao Yu, Zhenjie Xu, Gang Lu
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Preparation of Nickel Oxide-Loaded Hierarchical Porous Alumina Ceramic for Photocatalytic Degradation of Methylene Blue
To address the problem of dye wastewater pollution, hierarchical porous alumina ceramics (HPAC) were prepared as carriers in this study by using digital light processing (DLP) 3D printing combined with the freeze-drying method. The results showed that the hierarchical porous alumina ceramics with a porogenic agent content of 33 wt% exhibited the highest porosity of 34.20% ± 1.22% and a pore size of 2–5 nm. An efficient photocatalytic system was constructed by loading nickel oxide nanoparticles (n-NiO) via the sol-gel method. The prepared photocatalytic carriers and photocatalysts were characterized for structural and morphological analysis using X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) surface area analyzer, and energy-dispersive X-ray fluorescence spectroscopy (EDS). The results indicated that n-NiO/HPAC with 15.43% NiO loading achieved optimal performance in methylene blue (MB) degradation experiments, with the MB degradation rate reaching 94.51%. This study provides a theoretical basis and technical support for the practical application of porous-material-loaded n-NiO photocatalysts in dye wastewater treatment.
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.
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