基于 ZnAl-NO3-LDH 热分解的高光活性混合金属氧化物 (MMO) 的开发

Eng Pub Date : 2024-04-11 DOI:10.3390/eng5020033
H. Asghar, Valter Maurino, Muhammad Ahsan Iqbal
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引用次数: 0

摘要

利用高结晶 ZnAl 层状双氢氧化物(ZnAl-NO3-LDHs)通过热分解转化为混合金属氧化物(MMOs)的可能性,并进一步用于苯酚的光降解,以评估煅烧对具有增强光活性的 ZnAl-LDHs 的影响。本研究全面考察了 ZnAl-LDHs 在不同温度(400-600 °C)下煅烧后的结构、组成和形态演变,以及由 ZnO 和 ZnAl2O4 组成的 ZnO 基 MMO 纳米复合材料。最终的 ZnO 和 ZnAl2O4 基纳米复合材料显示出更强的光催化活性。研究结果表明,将 ZnAl-LDHs 从 400 ℃ 煅烧到 600 ℃ 会增加其比表面积,同时也会增加 d003 的层间距,而通过在 600 ℃ 煅烧 ZnAl-LDH 前体将 LDHs 转化为 ZnO/ZnAl2O4 纳米复合材料会显示出显著的光催化特性,从而在紫外线照射下将苯酚完全矿化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of Highly Photoactive Mixed Metal Oxide (MMO) Based on the Thermal Decomposition of ZnAl-NO3-LDH
The highly crystalline ZnAl layered double hydroxides (ZnAl-NO3-LDHs) are utilized for the potential transformation into mixed metal oxides (MMOs) through thermal decomposition and used further for the photodegradation of phenol to assess the influence of calcination on ZnAl-LDHs with enhanced photoactivity. The structure, composition, and morphological evolution of ZnAl-LDHs to ZnO-based MMO nanocomposites, which are composed of ZnO and ZnAl2O4, after calcination at different temperatures (400–600 °C), are all thoroughly examined in this work. The final ZnO and ZnAl2O4-based nanocomposites showed enhanced photocatalytic activity. The findings demonstrated that calcining ZnAl-LDHs from 400 to 600 °C increased the specific surface area and also enhanced the interlayer spacing of d003 while the transformation of LDHs into ZnO/ZnAl2O4 nanocomposites through calcining the ZnAl-LDH precursor at 600 °C showed significant photocatalytic properties, leading to complete mineralization of phenol under UV irradiation.
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来源期刊
Eng
Eng
CiteScore
2.10
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