TiO2@MIL-101(Cr) nanocomposites as an efficient photocatalyst for degradation of toluene

IF 21.8 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2021-10-13 DOI:10.1007/s42114-021-00337-7

Zhiguo Sun, Menglu Wang, Jiaming Fan, Run Feng, Yue Zhou, Li Zhang

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引用次数: 21

Abstract

Volatile organic compounds including toluene have high carcinogenicity and are very harmful to human health. In this work, an efficient nanocomposite photocatalyst of TiO₂@MIL-101(Cr) were synthesized by hydrothermal method. The photocatalytic performances of catalysts were analyzed by the degradation of toluene. The toluene removal efficiency of TiO₂@MIL-101(Cr) was 23.28% higher than that of MIL-101(Cr), and 26.88% higher than that of bare TiO₂. X-ray diffraction and scanning electron microscope results confirmed the successful synthesis of nanocomposite photocatalyst constructed of TiO₂ nanoparticles and regular octahedral MIL-101(Cr). Compared with bare TiO₂ nanoparticles, the specific surface area of TiO₂@MIL-101(Cr) was improved from 49.4 to 136.08 m² g⁻¹. The reduced photoluminescence intensity of nanocomposite indicates the effective charge separation, which can increase the lifetime of charge carriers and improve the efficiency of interfacial charge transfer to the surface. The enhanced removal efficiency of the composites are mainly owing to the expansion of light response range, the suppress of electron (e⁻) and holes (h⁺) recombination, the promotion of the electron transfer and the improved toluene adsorption ability of TiO₂@MIL-101(Cr).

Graphical abstract

In this work, an efficient nanocomposite photocatalyst of TiO₂@MIL-101(Cr) were synthesized by hydrothermal method. The toluene removal efficiency of TiO₂@MIL-101(Cr) was 23.28% higher than that of MIL-101(Cr), and 26.88% higher than that of bare TiO₂.

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TiO2@MIL-101（Cr）纳米复合材料作为降解甲苯的高效光催化剂

包括甲苯在内的挥发性有机化合物具有很高的致癌性，对人体健康危害很大。在这项工作中，一种高效的纳米复合光催化剂TiO2@MIL-101采用水热法合成了（Cr）。通过对甲苯的降解，分析了催化剂的光催化性能。甲苯去除效率TiO2@MIL-101（Cr）比MIL-101（Cr）高23.28%，比裸TiO2高26.88%。X射线衍射和扫描电子显微镜结果证实了由TiO2纳米颗粒和规则八面体MIL-101（Cr）构建的纳米复合光催化剂的成功合成。与裸露的TiO2纳米颗粒相比TiO2@MIL-101（Cr）从49.4 m2 g−1提高到136.08 m2 g−1。纳米复合材料的光致发光强度降低表明了有效的电荷分离，这可以增加载流子的寿命，提高界面电荷向表面转移的效率。复合材料去除效率的提高主要是由于光响应范围的扩大、电子（e−）和空穴（h+）复合的抑制、电子转移的促进和甲苯吸附能力的提高TiO2@MIL-101在这项工作中，一种高效的纳米复合光催化剂TiO2@MIL-101采用水热法合成了（Cr）。甲苯去除效率TiO2@MIL-101（Cr）比MIL-101（Cr）高23.28%，比裸TiO2高26.88%。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.