Influence of the Structure of Hydrothermal-Synthesized TiO₂ Nanowires Formed by Annealing on the Photocatalytic Reduction of CO₂ in H₂O Vapor.

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Nanomaterials Pub Date : 2024-08-21 DOI:10.3390/nano14161370

Andrey M Tarasov, Larisa I Sorokina, Daria A Dronova, Olga Volovlikova, Alexey Yu Trifonov, Sergey S Itskov, Aleksey V Tregubov, Elena N Shabaeva, Ekaterina S Zhurina, Sergey V Dubkov, Dmitry V Kozlov, Dmitry Gromov

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Abstract

The present study investigates the photocatalytic properties of hydrothermally synthesized TiO₂ nanowires (NWs) for CO₂ reduction in H₂O vapor. It has been demonstrated that TiO₂ NWs, thermally treated at 500-700 °C, demonstrate an almost tenfold higher yield of products compared to the known commercial powder TiO₂ P25. It has been found that the best material is a combination of anatase, TiO₂-B and rutile. The product yield increases with increasing heat treatment temperature of TiO₂ NWs. This is associated with an increase in the degree of crystallinity of the material. It is shown that the best product yield of the CO₂ reduction in H₂O vapor is achieved when the TiO₂ NW photocatalyst is heated to 100 °C.

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退火形成的水热合成 TiO2 纳米线的结构对 H2O 蒸汽中 CO2 光催化还原的影响

本研究探讨了水热法合成的二氧化钛纳米线（NWs）在 H2O 蒸汽中还原 CO2 的光催化特性。研究表明，与已知的商业粉末 TiO2 P25 相比，在 500-700 °C 温度下经过热处理的 TiO2 NWs 的产物产量几乎高出十倍。研究发现，最佳材料是锐钛矿、TiO2-B 和金红石的组合。随着 TiO2 NW 热处理温度的升高，产品产量也随之增加。这与材料结晶度的增加有关。研究表明，将 TiO2 NW 光催化剂加热到 100 °C，在 H2O 蒸汽中还原 CO2 的产率最高。

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来源期刊

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.