Boosting and convenient production of NH3 by using PCN-222 (Fe)/g-C3N4 composite through N2 fixation process under visible light

IF 2.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Iranian Chemical Society Pub Date : 2025-08-10 DOI:10.1007/s13738-025-03266-0

Parva Bayat-Makou, Saeed Dehghanpour, Bahareh Bagherpour

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引用次数: 0

Abstract

Recently, researchers have focused on eco-friendly methods for synthesizing gases and chemicals. In photocatalytic N₂ fixation, transition-metal sites adsorb N₂ and weaken its triple bond. Due to the presence of iron in the nitrogenase enzyme, iron-containing catalysts are of interest in nitrogen fixation. PCN-222 (Fe) is among the compounds that have worked well in nitrogen fixation. We report the solvothermal synthesis and testing of the PCN-222 (Fe)/g-C₃N₄ composite in different percentages (10, 20, 30, and 40%) and studied the nitrogen reduction process under visible-light conditions. The PCN-222 (Fe)/g-C₃N₄ composite, we synthesized by a solvothermal method. The highest photocatalytic N2 fixation rate (595.23 μmol g⁻¹ h⁻¹) was observed for the 30% PCN-222 (Fe)/g-C₃N₄ composite, which is almost 2.7 times higher than that of PCN-222 (Fe) alone. To characterize and investigate the synthesized composites, X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), photoluminescence (PL) spectra, Ultraviolet–visible (UV–Vis) spectroscopy, Ion chromatography (IC), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) were used to study the properties of the synthesized composites.

Graphical abstract

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PCN-222 (Fe)/g-C3N4复合材料在可见光下通过N2固定工艺促进和方便生产NH3

最近，研究人员把重点放在了合成气体和化学品的环保方法上。在光催化固定N2时，过渡金属位点吸附N2并削弱其三键。由于氮酶中铁的存在，含铁催化剂对固氮很有兴趣。PCN-222 （Fe）是在固氮中起良好作用的化合物之一。本文报道了不同比例（10%、20%、30%和40%）的PCN-222 (Fe)/g-C3N4复合材料的溶剂热合成和测试，并研究了可见光条件下的氮还原过程。采用溶剂热法合成了PCN-222 (Fe)/g-C3N4复合材料。30% PCN-222 (Fe)/g- c3n4复合材料的光催化固氮率最高（595.23 μmol g−1 h−1），几乎是单纯PCN-222 （Fe）的2.7倍。为了对合成的复合材料进行表征和研究，采用x射线衍射（XRD）、扫描电镜（SEM）、傅里叶变换红外光谱（FT-IR）、光致发光（PL）光谱、紫外可见（UV-Vis）光谱、离子色谱（IC）、热重分析（TGA）、x射线光电子能谱（XPS）和Brunauer-Emmett-Teller （BET）对合成的复合材料的性能进行了研究。图形抽象

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来源期刊

Journal of the Iranian Chemical Society 化学-化学综合

CiteScore

4.40

自引率

8.30%

发文量

230

审稿时长

5.6 months

期刊介绍： JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.