cuznal层状双氢氧化物光催化降解萘普生

IF 2.6 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
CrystEngComm Pub Date : 2022-06-18 DOI:10.1039/D2CE00633B
Bing Peng, Lanyan Wu, Qingzhu Li, Qingwei Wang, Kaizhong Li and Zeyan Zhou
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引用次数: 2

摘要

萘普生(NPX)是一种典型的药品和个人护理用品(PPCP),在水中检出频率高,常规方法难以有效去除。层状双氢氧化物作为一种高效的光催化剂,尚未用于PPCP的光催化。本研究制备了cuznal层状双氢氧化物(CuZnAl-LDH),并对其在紫外光照射下光催化降解NPX的性能进行了研究。结果表明,在最优条件下CuZnAl-LDH对NPX的光降解效率达到98.25%,明显高于纯光条件下(效率低于30%)。此外,CuZnAl-LDH光催化剂的结构、形貌和循环实验分析证实了该催化剂具有优异的光催化稳定性。此外,通过对比ZnAl-LDH和CuZnAl-LDH的光学性质,发现Cu2+能扩大光吸收,促进光生电荷电子(e?)和空穴(h+)的分离,并且在CuZnAl-LDH体系中,活性物质的形成机制符合氧的2p轨道到M2+的3d轨道的配体-金属电荷转移(LMCT)机制和CuO6单元中Cu2+离子的d-d跃迁机制。此外,ESR和清除实验表明,h+、˙O2?,和˙OH,表示h+ >序列;˙O2 ?比;˙哦。最后,通过LCMS-IT-TOF对中间体产物进行鉴定,没有产生毒性大于NPX的中间体。提出了NPX可能的降解途径,包括脱羧、去甲基化、羟基化反应和基于中间体的开环反应。这些结果有望为萘普生的光降解提供新的数据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Photodegradation of naproxen using CuZnAl-layered double hydroxides as photocatalysts†

Photodegradation of naproxen using CuZnAl-layered double hydroxides as photocatalysts†
Naproxen (NPX) as a typical pharmaceutical and personal care products (PPCPs) is frequently detected in waters and difficult to remove effectively by conventional methods. Layered double hydroxides as highly Efficient...
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来源期刊
CrystEngComm
CrystEngComm 化学-化学综合
CiteScore
5.50
自引率
9.70%
发文量
747
审稿时长
1.7 months
期刊介绍: Design and understanding of solid-state and crystalline materials
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