A new photon kinetic-measurement based on the kinetics of electron-hole pairs in photodegradation of
- 期刊名字:环境科学学报(英文版)
- 文件大小:
- 论文作者:SHIGWEDHA Nditange,HUA Zhao-zh
- 作者单位:Laboratory of Environmental Biotechnology,KeyLaboratory of Industrial Biotechnology
- 更新时间:2022-11-24
- 下载次数:次
Actual textile wastewater and synthesized wastewater containing various textile dyes were photocatalytic degraded by the UVH2O2Fs-TiO2 process in an annular-flow photocatalytic reactor.In this process,a photon kinetic-measure was adopted to obtain constant rates of dyes decomposition.It was theorized that,by illumination at difierent UV frequencies.the electrons within the semiconductor were excited from the valence band to the conduction band,yielding the formation of electron-hole palrs which are the pre-requisites for photocatalysis.CPT(critical photonic time)exposure required to cause 90%of vibrations between the double and single bonds along the molecular chain of the dyes to be oxidized.was taken to measure the photocatalytic activities.The CPTs varied with the frequencies of the UV spectral areas.The derivatization of CPT from the first-order kinetic law was presented.
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