Promoting the Photothermocatalytic Performance of Co3O4 by C-doping for Toluene Oxidation

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-04-14 DOI:10.1007/s10562-025-05014-8

Siyu Fang, Fuxin Liao, Zixin Chen, Sudi Yang, Jie Zhang, Pan Xu

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引用次数: 0

Abstract

Photothermocatalytic oxidation technology stands out as one of the most environmentally friendly and effective approaches for VOC degradation, and the catalyst plays a pivotal role in this process. In this study, carbon-doped Co₃O₄ nanocomposites (C-Co₃O₄) were synthesized via the sol-gel method and employed for the photothermal degradation of toluene. The results reveal that the calcination temperature profoundly influences the photothermal catalytic performance of the materials. C-Co₃O₄-250, obtained by calcination at 250 °C, exhibits the largest specific surface area, superior low-temperature reduction capability, and enhanced oxygen species activity, leading to its optimal catalytic performance in the photothermal oxidation of toluene. Under a light intensity of 400 mW/cm², toluene conversion reaches 95%, and the CO₂ yield attains 80% on C-Co₃O₄-250 during continuous flow reactions, much higher than that of 18% and 10% on pure Co₃O₄.

Graphical Abstract

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c掺杂提高Co3O4对甲苯氧化的光热催化性能

光热催化氧化技术是目前最环保、最有效的降解VOC的方法之一，而催化剂在这一过程中起着举足轻重的作用。本研究采用溶胶-凝胶法合成了碳掺杂Co3O4纳米复合材料（C-Co3O4），并将其用于甲苯的光热降解。结果表明，煅烧温度对材料的光热催化性能影响很大。在250℃下煅烧得到的C- co3o4 -250具有最大的比表面积、优异的低温还原能力和较强的氧活性，在甲苯的光热氧化中具有最佳的催化性能。在400 mW/cm2光强下，连续流动反应中，C-Co3O4-250的甲苯转化率达到95%，CO2产率达到80%，远高于纯Co3O4的18%和10%。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.