燃烧合成 TiO2/C 复合材料，提高光催化 H2O2 产率和太阳能蒸汽蒸发效率

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

Materials Letters Pub Date : 2024-10-28 DOI:10.1016/j.matlet.2024.137617

Yunyun Gong, Yali Cao, Yuanyuan Feng, Wenmiao Zhu, Qinying Li, Meichao Gao

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引用次数: 0

摘要

本研究提出了一种简单的燃烧方法，用于可控合成 TiO2/C 复合材料，既能实现界面上高效的太阳能水蒸发，又能光催化产生 H2O2。结构和形态特征表明，碳量子点和无定形碳共存，并很好地分布在 TiO2 表面。TiO2/C 复合材料对可见光的吸收增强，光生电子-空穴对分离迅速。在模拟太阳光辐照下，TiO2/C-10 表现出优异的光催化 H2O2 生成活性，达到 3068.46 μmol/g/h。此外，在模拟太阳辐照下，其水蒸发率高达 5.81 kg-m-2-h-1。

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Combustion synthesis of TiO2/C composites for enhanced photocatalytic H2O2 production and solar steam evaporation efficiency

In this work, a simple combustion method was proposed for the controllable synthesis of TiO₂/C composites, which can achieve both the efficient solar water evaporation at the interface and photocatalytic H₂O₂ production. Structural and morphological characteristic indicated the co-existence of carbon quantum dots and amorphous carbon, which were well distributed on the surface of the TiO₂. TiO₂/C composites displayed the enhanced visible light absorption and the rapid separation of photogenerated electron-hole pairs. TiO₂/C-10 exhibited an excellent photocatalytic H₂O₂ production activity of 3068.46 μmol/g/h under the simulated solar irradiation. Besides, its water evaporation rate reached up to 5.81 kg·m⁻²·h⁻¹ under the simulated solar irradiation.

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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