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您的检索式：作者名="Ananthakumar SOLAIAPPAN"
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| 1 | Influence of temperature on preparing mesoporous mixed phase N/TiO2 nanocomposite with enhanced solar light photocatalytic activity显示文摘Nitrogen-doped titanium dioxide(N/TiO2)nanophotocatalysts were successfully synthesized in the presence of environmentally benign nitrogen dopant source,guanidinium chloride,by the sol-gel method.The effect of calcination temperature(300–600℃)on their physicochemical properties was investigated by means XRD,XPS,FESEM,HRTEM,Raman spectroscopy,UV-vis DRS,PL and BET.Moreover,their photocatalytic activities were evaluated against rhodamine B(RhB)degradation under direct sun light.Results showed that the crystal phase of spheroidal N/TiO2 nanoparticles was changed from anatase(300℃)to rutile(600℃)via an intermediate anatase/rutile(A/R)mixed phase(400–500℃),and the RhB photodegradation performance was increased with the decrease of the calcination temperature.Notably,N/TiO2 prepared at 400℃demonstrated the best degradation performance(99%)after 5 h irradiation.The enhanced performance with high photostability was mainly attributed to its higher surface area and pore volume,stronger light absorption,and lower recombination rate.Such nanomaterials have practical applications for environmental remediation. | Elias ASSAYEHEGN Ananthakumar SOLAIAPPAN Yonas CHEBUDIE Esayas ALEMAYEHU | 2019 | Frontiers of Materials Science2019，13，4： | 1 |
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