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抗坏血酸辅助多元醇法合成用于去除废水中铅的铁及铁/氧化石墨烯、铁/六方氮化硼复合材料

Ascorbic Acid-Assisted Polyol Synthesis of Iron and Fe/GO, Fe/h-BN Composites for Pb Removal from Wastewaters.

作者信息

Leybo Denis, Tagirov Marat, Permyakova Elizaveta, Konopatsky Anton, Firestein Konstantin, Tuyakova Feruza, Arkhipov Dmitry, Kuznetsov Denis

机构信息

Department of Functional Nanosystems and High Temperature Materials, National University of Science and Technology "MISiS", Moscow 119049, Russia.

Laboratory of Inorganic Materials, National University of Science and Technology "MISiS", Moscow 119049, Russia.

出版信息

Nanomaterials (Basel). 2019 Dec 22;10(1):37. doi: 10.3390/nano10010037.

DOI:10.3390/nano10010037
PMID:31877892
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7023246/
Abstract

Iron powders and Fe/graphene oxide and Fe/boron nitride composites were synthesized by means of a polyol synthesis method. The effect of NaOH/Fe and ascorbic acid/Fe ratios on the characteristics of synthesized products were evaluated. The samples were characterized by X-ray diffraction, scanning and transmission electron microscopy, low-temperature nitrogen adsorption and Raman-spectroscopy. Ascorbic acid-assisted polyol synthesis resulted in the 10-fold decrease of the iron particles' size and almost 2-fold increase of lead removal efficiency. The deposition of iron on the surface of graphene oxide lead to the formation of small 20-30 nm sized particles as well as bigger 200-300 nm sized particles, while the reduction in presence of boron nitride resulted in the 100-200 nm sized particles. The difference is attributed to the surface state of graphene oxide and boron nitride. Adsorption properties of the obtained materials were studied in the process of Pb ion removal from wastewater.

摘要

采用多元醇合成法合成了铁粉、铁/氧化石墨烯和铁/氮化硼复合材料。评估了NaOH/Fe和抗坏血酸/Fe比例对合成产物特性的影响。通过X射线衍射、扫描和透射电子显微镜、低温氮吸附和拉曼光谱对样品进行了表征。抗坏血酸辅助多元醇合成使铁颗粒尺寸减小了10倍，铅去除效率提高了近2倍。铁沉积在氧化石墨烯表面导致形成尺寸为20 - 30 nm的小颗粒以及尺寸为200 - 300 nm的较大颗粒，而在氮化硼存在下还原则生成尺寸为100 - 200 nm的颗粒。这种差异归因于氧化石墨烯和氮化硼的表面状态。在从废水中去除铅离子的过程中研究了所得材料的吸附性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/e14ff56e39e7/nanomaterials-10-00037-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/23b98779af83/nanomaterials-10-00037-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/99657b3466ed/nanomaterials-10-00037-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/d49dc1db4dd0/nanomaterials-10-00037-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/746ac98af8be/nanomaterials-10-00037-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/fafaa113d63c/nanomaterials-10-00037-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/38fbba1b714b/nanomaterials-10-00037-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/e14ff56e39e7/nanomaterials-10-00037-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/23b98779af83/nanomaterials-10-00037-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/99657b3466ed/nanomaterials-10-00037-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/d49dc1db4dd0/nanomaterials-10-00037-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/746ac98af8be/nanomaterials-10-00037-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/fafaa113d63c/nanomaterials-10-00037-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/38fbba1b714b/nanomaterials-10-00037-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8e34/7023246/e14ff56e39e7/nanomaterials-10-00037-g008.jpg

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