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FeNbO/NH-MIL-125(Ti) 复合材料对环氧丙烷与 CO 环加成反应的光催化活性。

Photocatalytic Activities of FeNbO/NH-MIL-125(Ti) Composites toward the Cycloaddition of CO to Propylene Oxide.

机构信息

Department of Chemistry, UAE University, Al-Ain 15551, United Arab Emirates.

出版信息

Molecules. 2021 Mar 17;26(6):1693. doi: 10.3390/molecules26061693.

DOI:10.3390/molecules26061693
PMID:33803019
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8002832/
Abstract

Photocatalytic utilization of CO in the production of value-added chemicals has presented a recent green alternative for CO fixation. In this regard, three FeNbO/NH-MIL-125(Ti) composites of different mole ratios were synthesized, characterized using Powder X-ray diffraction (PXRD), UV-vis diffuse reflectance spectroscopy (UV-Vis DRS), Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX). PXRD patterns confirm the co-existence of the parent components in the prepared composites. Moreover, the surface area increased as the mole percent of NH-MIL-125(Ti) in the composites increased due to the large surface area of NH-MIL-125(Ti). Prepared composites were investigated for the photocatalytic insertion of CO into propylene oxide. FeNbO/NH-MIL-125(Ti) showed the highest percent yield of 52% compared to the other two composites. Results demonstrate the cooperative mechanism between FeNbO and NH-MIL-125(Ti) and that the reaction proceeded photocatalytically.

摘要

光催化利用 CO 生产高附加值化学品为 CO 固定提供了一种新的绿色替代方法。在这方面，合成了三种不同摩尔比的 FeNbO/NH-MIL-125(Ti) 复合材料，采用粉末 X 射线衍射（PXRD）、紫外可见漫反射光谱（UV-Vis DRS）、BET、扫描电子显微镜（SEM）和能谱（EDX）进行了表征。PXRD 图谱证实了制备的复合材料中母体组分的共存。此外，由于 NH-MIL-125(Ti) 的比表面积较大，复合材料中 NH-MIL-125(Ti) 的摩尔百分比增加，表面积也随之增加。研究了制备的复合材料对 CO 插入环氧丙烷的光催化作用。与其他两种复合材料相比，FeNbO/NH-MIL-125(Ti) 的产率最高，达到 52%。结果表明，FeNbO 和 NH-MIL-125(Ti) 之间存在协同作用，反应是光催化进行的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/db590e34033b/molecules-26-01693-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/5485e2c2ba88/molecules-26-01693-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/4ecfc46e73cb/molecules-26-01693-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/b4bbd19fe407/molecules-26-01693-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/db590e34033b/molecules-26-01693-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/13df8433881d/molecules-26-01693-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/4a68304a1d67/molecules-26-01693-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/2db0465ab8b0/molecules-26-01693-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/a12f1eb987d4/molecules-26-01693-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/5485e2c2ba88/molecules-26-01693-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/4ecfc46e73cb/molecules-26-01693-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/b4bbd19fe407/molecules-26-01693-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1079/8002832/db590e34033b/molecules-26-01693-g008.jpg

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