期刊
APPLIED CLAY SCIENCE
卷 167, 期 -, 页码 43-49出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.clay.2018.10.006
关键词
Ti-pillared montmorillonite; Cr(III) and Fe(III) addition; Photocatalysis; Trimethoprim degradation
资金
- Spanish Ministry of Economy, Industry and Competitiveness (AEI/MINECO)
- European Regional Development Fund (ERDF) [MAT2013-47811-C2-R, MAT2016-78863-C2-2-R]
- Universidad de Salamanca
Montmorillonite pillared with titanium and doped with Cr3+ or Fe3+ has been tested for the photo-degradation of the antibiotic trimethoprim (trimethoxybenzyl-2,4-pyrimidinediamine) under different conditions, namely, in the dark or in UV light, with or without catalyst, finding excellent catalytic performance under photocatalytic conditions. The degradation by-products were preliminary analysed by mass spectrometry. The results suggested that the molecule broke in two halves, corresponding to its two existing rings. The process continued with the breakage of new fragments from the trimethoxybenzene half, these fragments later reacted with the methoxy groups in this part of the molecule, giving species with m/z values higher than that for the starting molecule, and with the breakage of new fragments.
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