Regulation of surface frustrated Lewis acid-base property of BiOBr by Ti incorporation for CO2 photoreduction

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2024-09-06 DOI:10.1016/j.matlet.2024.137361

引用次数: 0

Abstract

In this paper, Ti isomorphic substituted BiOBr (Ti-BiOBr) is obtained by chemical method. The optimized Ti-BiOBr exhibites superior CO yield of 122.74 μmol·g⁻¹·h⁻¹ which achieves 6.53-fold increasement compared to pristine BiOBr. Due to doping of Ti elements, more oxygen vacancies are formed in BiOBr. The oxygen vacancies and Ti atoms promote the formation of surface frustrated Lewis pairs (FLPs) for BiOBr. The Ti atom is assigned to Lewis acid site, while the neighboring O atom acts as Lewis base site. The substitution of Ti atoms significantly promote the adsorption and activation of CO₂ molecules on surface of BiOBr. This work provides valuable idea for the development of efficient photocatalysts for CO₂ reduction.

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通过掺入钛调节 BiOBr 的表面挫折路易斯酸碱特性，实现二氧化碳光氧化

本文通过化学方法获得了钛异构取代的 BiOBr（Ti-BiOBr）。优化后的 Ti-BiOBr CO 产率高达 122.74 μmol-g-1-h-1，是原始 BiOBr 产率的 6.53 倍。由于掺杂了 Ti 元素，BiOBr 中形成了更多的氧空位。氧空位和 Ti 原子促进了 BiOBr 表面受挫路易斯对（FLPs）的形成。 Ti 原子被分配到路易斯酸位，而邻近的 O 原子则充当路易斯碱位。这项研究为开发用于还原二氧化碳的高效光催化剂提供了宝贵的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive