Photocatalytic toluene degradation: braiding physico-chemical and intrinsic kinetic analyses,Reaction Chemistry & Engineering

当前位置： X-MOL 学术 › React. Chem. Eng. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Photocatalytic toluene degradation: braiding physico-chemical and intrinsic kinetic analyses
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2020-06-18 , DOI: 10.1039/d0re00211a
Uriel Caudillo-Flores _{1,

2,

3,

4} , Marcos Fernández-García _{1,

2,

3,

4} , Anna Kubacka _{1,

2,

3,

4}

Affiliation

In this study, we analyzed the photocatalytic degradation of toluene using composite systems consisting of a tungsten oxide component supported on a pure anatase phase. To scrutinize the photocatalytic process, herein we presented a new method with combined spectroscopic and kinetic tools to provide novel and quantitative information mostly obtained in situ under reaction conditions. First, it allows us to extract information quantitatively, regarding charge recombination and the fraction of kinetically relevant charge species reaching the surface of the material and used in chemical steps. In addition, the method allows us to detail how efficiently such kinetically relevant charge carrier species interact with key reactant and intermediate molecules. The application of such procedure to the elimination of toluene shows how the composite system improves the activity with respect to the relevant pure-anatase reference catalyst. This appears to be a complex phenomenon, with implication in several elemental steps of the reaction. The new method can be easily generalized to any photocatalytic reaction and would pave the way to progress in the quantitative understanding of the photocatalytic process.

中文翻译：

光催化甲苯降解：编织物化学和内在动力学分析

在这项研究中，我们使用由负载在纯锐钛矿相上的氧化钨组分组成的复合系统分析了甲苯的光催化降解。为了详细研究光催化过程，我们在这里提出了一种结合光谱和动力学工具的新方法，以提供新颖和定量的信息，这些信息大多是在现场获得的在反应条件下。首先，它使我们能够定量提取有关电荷复合以及到达材料表面并用于化学步骤的动力学相关电荷种类的分数的信息。此外，该方法使我们能够详细说明这种动力学相关的电荷载体物种如何与关键反应物和中间分子相互作用。该方法在消除甲苯中的应用表明了该复合体系相对于相关的纯锐钛矿参考催化剂如何提高活性。这似乎是一个复杂的现象，涉及反应的几个基本步骤。新方法可以很容易地推广到任何光催化反应中，并为定量了解光催化过程铺平了道路。

更新日期：2020-07-28

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11