Plasmonic Ag-pillared rectorite as catalyst for degradation of 2,4-DCP in the H2O2-containing system under visible light irradiation
作者： Yunfang Chen , Jianzhang Fang , Shaoyou Lu , Yan Wu , Dazhi Chen
DOI: 10.1016/J.JHAZMAT.2015.05.022
关键词: Catalysis 、 Materials science 、 Thermal decomposition 、 Absorption spectroscopy 、 Photocatalysis 、 Aqueous solution 、 Scanning electron microscope 、 Analytical chemistry 、 X-ray photoelectron spectroscopy 、 Visible spectrum 、 Nuclear chemistry
摘要: Abstract This study aims at photocatalytic degradation of 2,4-DCP with the assistance H 2 O in aqueous solution by a composite catalyst Ag-rectorite. The catalysts were prepared via novel thermal decomposition method followed after cation-exchange process. synthesized nano-materials characterized X-ray diffraction (XRD), photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) surface analyzer, Ultraviolet–visible light (UV–vis) absorption spectra, field-emission scanning electron microscope (FE-SEM) and transmission (TEM). different mechanisms process or without visible irradiation discussed, respectively. Moreover, efficiency wastewater under Ag-rectorite/H /visible system was investigated series experiments, concerning on effects major operation factors, such as dosage initial pH value. highest rate observed when adding 0.18 mL into 50 mL solution, optimal value 4 for reaction. Afterwards, total organic carbon (TOC) experiments carried out to evaluate mineralization ratio 2,4-DCP.
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