A first study of CO adsorption-IR spectroscopy and HER activity: Understanding TiO2 morphology effects on MoS2 active sites

IF 5.2 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today Pub Date : 2025-05-20 DOI:10.1016/j.cattod.2025.115384

Limor Ben Neon , Keyla Teixeira Santos , Laetitia Dubau , Laetitia Oliviero

引用次数: 0

Abstract

In this work, the morphology of TiO₂ support is tuned from bulk anatase into tubular and wire ones in order to reveal its impact on MoS₂ active sites for Hydrogen Evolution Reaction (HER). For the first time, characterization of MoS₂ edge sites by CO adsorption followed by IR spectroscopy (IR/CO) is correlated with their HER activity and kinetics. IR/CO characterization allows to draw structure-electrocatalytic activity relationships, underlining the positive effect of increased Mo edge site concentration but also of increased electron density at Mo edge sites and of the (001) anatase TiO₂ facet.

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CO吸附-红外光谱和HER活性的首次研究：了解TiO2形态对MoS2活性位点的影响

在这项工作中，TiO2载体的形态从块状锐钛矿转变为管状和线状，以揭示其对析氢反应（HER）的MoS2活性位点的影响。首次采用CO吸附法和红外光谱法（IR/CO）对MoS2边缘位点进行表征，并将其与HER活性和动力学相关联。IR/CO表征允许绘制结构-电催化活性关系，强调增加Mo边缘位点浓度的积极影响，以及Mo边缘位点和（001）锐钛矿TiO2 facet增加的电子密度的积极影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Catalysis Today 化学-工程：化工

CiteScore

11.50

自引率

3.80%

发文量

573

审稿时长

2.9 months

期刊介绍： Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues. Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.