Study on the Effect and Mechanism of Hydrothermal Modification on TiO2 Catalysts for CO2 Photo-Thermal Reduction

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-01-03 DOI:10.1007/s10562-024-04906-5

Bin Guan, Junyan Chen, Zhongqi Zhuang, Lei Zhu, Zeren Ma, Xuehan Hu, Chenyu Zhu, Sikai Zhao, Kaiyou Shu, Hongtao Dang, Tiankui Zhu, Zhen Huang

{"title":"Study on the Effect and Mechanism of Hydrothermal Modification on TiO2 Catalysts for CO2 Photo-Thermal Reduction","authors":"Bin Guan, Junyan Chen, Zhongqi Zhuang, Lei Zhu, Zeren Ma, Xuehan Hu, Chenyu Zhu, Sikai Zhao, Kaiyou Shu, Hongtao Dang, Tiankui Zhu, Zhen Huang","doi":"10.1007/s10562-024-04906-5","DOIUrl":null,"url":null,"abstract":"<div><p>Photocatalysts like TiO<sub>2</sub> can harness sunlight to reduce CO<sub>2</sub> into valuable hydrocarbon fuels, representing a promising solution for carbon neutrality and sustainable energy challenges. Herein, the effect of hydrothermal modification on the CO<sub>2</sub> photothermal reduction activity of TiO<sub>2</sub> catalyst was studied, through photo-catalytic performance test, XRD, Raman, N<sub>2</sub> adsorption, SEM, TEM, CO<sub>2</sub>-TPD, UV-vis DRS, and PL on commercial and modified TiO<sub>2</sub>. The results show that the hydrothermal-modified TiO<sub>2</sub>-NBS is a pure anatase phase, which has a narrower band gap than the mixed anatase and rutile structure of commercial TiO<sub>2</sub>-P25, and is more favorable to the excitation of photon-generated carriers. Meanwhile, the light emission intensity of anatase phase is weaker, which is conducive to electron-hole separation, promoting the reactant intermediate conversion. In addition, compared with TiO<sub>2</sub>-P25, TiO<sub>2</sub>-NBS has better morphology and specific surface pore characteristics, more adsorption sites for CO<sub>2</sub>, and stronger adsorption strength, which facilitate the adsorption and activation reactions of CO<sub>2</sub>. As a result, TiO<sub>2</sub>-NBS exhibits stronger CO<sub>2</sub> photothermal reduction activity, with CO and CH<sub>4</sub> production rates of 6.49 µmol g<sup>−1</sup> h<sup>−1</sup> and 1.56 µmol g<sup>−1</sup> h<sup>−1</sup>, which are 2.58 times and 2.84 times those of TiO<sub>2</sub>-P25, respectively.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 2","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-024-04906-5","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Photocatalysts like TiO₂ can harness sunlight to reduce CO₂ into valuable hydrocarbon fuels, representing a promising solution for carbon neutrality and sustainable energy challenges. Herein, the effect of hydrothermal modification on the CO₂ photothermal reduction activity of TiO₂ catalyst was studied, through photo-catalytic performance test, XRD, Raman, N₂ adsorption, SEM, TEM, CO₂-TPD, UV-vis DRS, and PL on commercial and modified TiO₂. The results show that the hydrothermal-modified TiO₂-NBS is a pure anatase phase, which has a narrower band gap than the mixed anatase and rutile structure of commercial TiO₂-P25, and is more favorable to the excitation of photon-generated carriers. Meanwhile, the light emission intensity of anatase phase is weaker, which is conducive to electron-hole separation, promoting the reactant intermediate conversion. In addition, compared with TiO₂-P25, TiO₂-NBS has better morphology and specific surface pore characteristics, more adsorption sites for CO₂, and stronger adsorption strength, which facilitate the adsorption and activation reactions of CO₂. As a result, TiO₂-NBS exhibits stronger CO₂ photothermal reduction activity, with CO and CH₄ production rates of 6.49 µmol g⁻¹ h⁻¹ and 1.56 µmol g⁻¹ h⁻¹, which are 2.58 times and 2.84 times those of TiO₂-P25, respectively.

Graphical Abstract

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

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.