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Effective removal of organic pollutants using GeO2/TiO2 nanoparticle composites under direct sunlight
Materials Chemistry Frontiers ( IF 7 ) Pub Date : 2018-02-05 00:00:00 , DOI: 10.1039/c7qm00492c Kalithasan Natarajan 1, 2, 3, 4, 5 , Hari C. Bajaj 1, 2, 3, 4, 5 , Rajesh J. Tayade 1, 2, 3, 4, 5
Materials Chemistry Frontiers ( IF 7 ) Pub Date : 2018-02-05 00:00:00 , DOI: 10.1039/c7qm00492c Kalithasan Natarajan 1, 2, 3, 4, 5 , Hari C. Bajaj 1, 2, 3, 4, 5 , Rajesh J. Tayade 1, 2, 3, 4, 5
Affiliation
TiO2 and GeO2/TiO2 nanoparticle composites were synthesized from titanium tetraisopropoxide, germanium oxide, dry ethanol, and diethanolamine using a solution combustion method. The synthesized catalysts were characterized using powder X-ray diffraction, UV-Vis diffuse reflectance spectroscopy, Brunauer–Emmett–Teller surface area analysis, Fourier transform infrared spectroscopy, Fourier transform Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy. The photocatalytic degradation of rhodamine B (RhB) dye in aqueous solution (2.06 × 10−5 M) was achieved using synthesized pristine TiO2 (P-T) and GeO2/TiO2 (GT) nanoparticle composite catalysts under direct sunlight. Among the synthesized catalysts, 1-GT afforded 100% RhB degradation in aqueous solution within 180 min. Furthermore, 85, 87, and 83% degradation was achieved using P-T, 2-GT, and 3-GT nanoparticles, respectively. RhB degradation was confirmed by chemical oxygen demand and total organic carbon analyses.
中文翻译:
在直射阳光下 使用GeO 2 / TiO 2纳米颗粒复合物 有效去除有机污染物
采用溶液燃烧法由四异丙氧基钛,氧化锗,无水乙醇和二乙醇胺合成了TiO 2和GeO 2 / TiO 2纳米复合材料。使用粉末X射线衍射,UV-Vis漫反射光谱,Brunauer-Emmett-Teller表面积分析,傅里叶变换红外光谱,傅里叶变换拉曼光谱,扫描电子显微镜和透射电子显微镜对合成的催化剂进行了表征。使用合成的原始TiO 2(PT)和GeO 2 / TiO 2实现了罗丹明B(RhB)染料在水溶液(2.06×10 -5 M)中的光催化降解。(GT)纳米粒子复合催化剂在阳光直射下。在合成的催化剂中,1-GT在180分钟内的水溶液中降解了100%RhB。此外,分别使用PT,2-GT和3-GT纳米粒子可实现85%,87%和83%的降解。RhB的降解通过化学需氧量和总有机碳分析得以确认。
更新日期:2018-02-05
中文翻译:
在直射阳光下 使用GeO 2 / TiO 2纳米颗粒复合物 有效去除有机污染物
采用溶液燃烧法由四异丙氧基钛,氧化锗,无水乙醇和二乙醇胺合成了TiO 2和GeO 2 / TiO 2纳米复合材料。使用粉末X射线衍射,UV-Vis漫反射光谱,Brunauer-Emmett-Teller表面积分析,傅里叶变换红外光谱,傅里叶变换拉曼光谱,扫描电子显微镜和透射电子显微镜对合成的催化剂进行了表征。使用合成的原始TiO 2(PT)和GeO 2 / TiO 2实现了罗丹明B(RhB)染料在水溶液(2.06×10 -5 M)中的光催化降解。(GT)纳米粒子复合催化剂在阳光直射下。在合成的催化剂中,1-GT在180分钟内的水溶液中降解了100%RhB。此外,分别使用PT,2-GT和3-GT纳米粒子可实现85%,87%和83%的降解。RhB的降解通过化学需氧量和总有机碳分析得以确认。