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首页> 外文期刊>Catalysis science & technology >Graphitic carbon nitride photocatalysis: the hydroperoxyl radical role revealed by kinetic modelling
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Graphitic carbon nitride photocatalysis: the hydroperoxyl radical role revealed by kinetic modelling

机译：石墨碳氮化光催化作用:揭示了动能hydroperoxyl激进的作用造型

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摘要

Metal-free graphitic carbon nitride (GCN) is an optical semiconductor with the advantage of in situ H2O2 generation parallel to pollutant removal. The photocatalytic degradation mechanism using GCN is attributed to a series of reactions with reactive oxygen species and photogenerated holes. However, the role of each species in the photocatalytic process kinetics remains a challenge. This work provides novel photodegradation kinetic data through a modelling approach using the Kintecus software for the first time in heterogeneous photocatalytic reactions. The results were validated by double fitting of simultaneous phenol removal and H2O2 formation. The role of dissolved oxygen and intermediate products are also investigated. Sophisticated techniques, as photoacoustic spectroscopy for energy-resolved distribution of electron traps and diffuse reflectance spectroscopy for determination of band energies, aid to clarify the behaviour of GCN. This paper identifies the oxidation routes contributors and carefully describes the GCN photocatalytic simultaneous phenol degradation and H2O2 generation.
机译：不含金属的石墨碳氮化(GCN)是一个光学半导体的优势原地过氧化氢生成平行于污染物去除。使用GCN归因于一系列的反应活性氧和photogenerated洞。光催化动力学仍然是一个过程挑战。通过模拟光降解动力学数据方法使用Kintecus软件第一次在多相光催化反应。拟合的同时去除苯酚和过氧化氢形成。中间产品也在调查中。先进的技术,如光声光谱能量分辨分布电子陷阱和漫反射率光谱测定频带的能量,援助澄清之下的行为。标识贡献者和氧化路线仔细描述了GCN光催化同时苯酚降解和过氧化氢的一代。

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