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原位制备 g-CN 纳米片/FeOCl:实现与增强的光催化固氮活性。

In situ preparation of g-CN nanosheet/FeOCl: Achievement and promoted photocatalytic nitrogen fixation activity.

机构信息

Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam; Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam.

School of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.

出版信息

J Colloid Interface Sci. 2021 Apr;587:538-549. doi: 10.1016/j.jcis.2020.11.011. Epub 2020 Nov 7.

Abstract

Climate change, global warming, and population growth have led researchers to use eco-sociable procedures for the N reduction reaction. It has discovered that N molecule can be transformed into NH in ambient circumstances with nanocomposites upon visible irradiation. In this research paper, a new visible-light-driven photocatalyst was constructed, with various weight percents of FeOCl particles (10, 20, 30, and 40%) that have adhered on NS-CN. Subsequently, multiple features of the nanocomposites were assayed in detail. The results illustrated that the NS-CN/FeOCl (20%) system has remarkable photoactivity in the NH production reaction in comparison with the NS-CN and CN, which showed 2.5 and 8.6 higher activity, respectively. The durability of NS-CN/FeOCl (20%) system, as a substantial factor, was assayed for 5 recycles. Moreover, the effect of electron quenchers, pH of media, and solvent was studied. At last, a feasible Z-scheme mechanism for the remarkable improvement of N fixation efficiency was offered.

摘要

气候变化、全球变暖以及人口增长促使研究人员为氮还原反应使用生态友好型程序。现已发现,在可见光照下,纳米复合材料可以将氮分子转化为氨。在本研究论文中,构建了一种新型可见光驱动光催化剂,其中负载在 NS-CN 上的 FeOCl 颗粒(10%、20%、30%和 40%)具有不同的重量百分比。随后,详细测试了纳米复合材料的多种特性。结果表明,与 NS-CN 和 CN 相比,NS-CN/FeOCl(20%)体系在 NH 生成反应中具有显著的光活性,分别表现出 2.5 和 8.6 倍的更高活性。作为一个重要因素,对 NS-CN/FeOCl(20%)体系的耐用性进行了 5 次循环测试。此外,还研究了电子猝灭剂、介质 pH 值和溶剂的影响。最后,提出了一种可行的 Z 型机制,用于显著提高氮固定效率。

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