Abstract

Morphological features of iron-containing composites based on silicon, titanium, vanadium, and boron nitrides and prepared by self-propagating synthesis were examined by scanning electron microscopy, and the content of elements (B, Si, N, Ti, V, O, Fe, C, Al, Mg, Ca) on their surface was quantitatively estimated using an attachment for EDX microanalysis. The optical properties of the composites were studied, and the band gap values for the semiconductors incorporated in the ceramic matrix were determined. A comparative evaluation of the performance of the composites in hydrogen generation from solutions of organic substances (НСООН, Н₂С₂О₄, malic acid, sucrose) under UV and visible irradiation was made. The efficiency of the photocatalytic generation of hydrogen under the action of visible light is shown to be associated both with the composition of the ceramic matrix containing semiconductor compounds and with the occurrence of the photo-Fenton process in the solution in the presence of hydrogen peroxide.

中文翻译：

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紫外线和可见光照射下含铁复合材料从有机物光催化制氢

摘要

通过扫描电子显微镜检查了通过自蔓延合成法制备的，基于硅，钛，钒和硼氮化物的含铁复合材料的形貌特征，并测定了元素（B，Si，N，Ti，V，O，使用用于EDX微量分析的附件定量估算其表面上的Fe，C，Al，Mg，Ca）。研究了复合材料的光学性能，并确定了掺入陶瓷基体中的半导体的带隙值。在氢生成的复合物的来自有机物质的溶液（НСООН，性能的比较评价Н ₂ С ₂ О ₄，在紫外线和可见光照射下制成苹果酸，蔗糖）。可见光在可见光的作用下氢的光催化产生效率与含有半导体化合物的陶瓷基体的组成以及在过氧化氢存在下溶液中光芬顿过程的发生有关。