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盐酸胍在石墨相氮化碳合成中的作用。

The role of guanidine hydrochloride in graphitic carbon nitride synthesis.

机构信息

Department of Chemistry, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00, Ostrava-Poruba, Czech Republic.

Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00, Ostrava-Poruba, Czech Republic.

出版信息

Sci Rep. 2021 Nov 3;11(1):21600. doi: 10.1038/s41598-021-01009-8.

DOI:10.1038/s41598-021-01009-8
PMID:34732765
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8566454/
Abstract

Graphitic carbon nitride (CN) was synthesized from guanidine hydrochloride (G), melamine (M) and dicyandiamide (DCDA). The CN materials synthetized from the pure precursors and their mixtures were characterized by common methods, including thermal analysis, and their photocatalytic activities were tested by the degradation of selected organic pollutants, such as amoxicillin, phenol, Rhodamine B (RhB). Remarkable changes in their texture properties in terms of particle sizes, specific surface areas (SSA) and consequently their photocatalytic activity were explained by the role of guanidine hydrochloride in their synthesis. The SSA increased due to the release of NH and HCl and its complex reactions with melamine and DCDA forming structure imperfections and disruptions. The photocatalytic activity of the CN materials was found to be dependent on their SSA.

摘要

石墨相氮化碳（CN）是由盐酸胍（G）、三聚氰胺（M）和双氰胺（DCDA）合成的。通过常用方法对由纯前体及其混合物合成的 CN 材料进行了表征，包括热分析，并通过降解选定的有机污染物（如阿莫西林、苯酚、罗丹明 B（RhB））测试了它们的光催化活性。盐酸胍在合成过程中的作用解释了它们在颗粒尺寸、比表面积（SSA）以及光催化活性方面的显著变化。由于 NH 和 HCl 的释放及其与三聚氰胺和 DCDA 的复杂反应，形成了结构缺陷和破坏，从而导致 SSA 增加。CN 材料的光催化活性被发现与其 SSA 有关。

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