Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation

NWIPB OpenIR

	Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation
	Zheng Pei ; Zhang Kaiqiang ; Dang Yu ; Bai Bo ; Guan Weisheng ; Suo Yourui ; Bai, B (reprint author), Chinese Acad Sci, Northwest Plateau Inst Biol, Xining 810001, Peoples R China.
	2015
发表期刊	JOURNAL OF NANOMATERIALS
摘要	TiO2@yeast-carbon microspheres with raspberry-like morphology were fabricated based on the pyrolysis method. The obtained products were characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive spectrometry (EDS), and X-ray diffraction (XRD). Effects of initial dye concentration and contact time on adsorption capacity of TiO2@yeast-carbon for cationic dye methylene blue (MB) and anionic dye congo red (CR) were investigated. Experimental data were described by Langmuir, Freundlich, Temkin, and Koble-Corrigan isotherm models, respectively. It was found that the equilibrium data of MB adsorption were best represented by Koble-Corrigan, and CR adsorption was best described by both Freundlich and Koble-Corrigan isotherm models. The kinetic data of MB and CR adsorption fitted pseudo-second-order kinetic model well. The results demonstrated that TiO2@yeast-carbon microspheres achieved favorable removal for the cationic MB in comparison with that for the anionic CR. In addition, regeneration experimental results showed that TiO2@yeast-carbon exhibited good recycling stability, reusability, and in situ renewability, suggesting that the as-prepared TiO2@yeast-carbon might be used as the potential low cost alternative for recalcitrant dye removal from industrial wastewater. One possible mechanism for regenerating dye-loaded TiO2@yeast in situ was also proposed.; TiO2@yeast-carbon microspheres with raspberry-like morphology were fabricated based on the pyrolysis method. The obtained products were characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive spectrometry (EDS), and X-ray diffraction (XRD). Effects of initial dye concentration and contact time on adsorption capacity of TiO2@yeast-carbon for cationic dye methylene blue (MB) and anionic dye congo red (CR) were investigated. Experimental data were described by Langmuir, Freundlich, Temkin, and Koble-Corrigan isotherm models, respectively. It was found that the equilibrium data of MB adsorption were best represented by Koble-Corrigan, and CR adsorption was best described by both Freundlich and Koble-Corrigan isotherm models. The kinetic data of MB and CR adsorption fitted pseudo-second-order kinetic model well. The results demonstrated that TiO2@yeast-carbon microspheres achieved favorable removal for the cationic MB in comparison with that for the anionic CR. In addition, regeneration experimental results showed that TiO2@yeast-carbon exhibited good recycling stability, reusability, and in situ renewability, suggesting that the as-prepared TiO2@yeast-carbon might be used as the potential low cost alternative for recalcitrant dye removal from industrial wastewater. One possible mechanism for regenerating dye-loaded TiO2@yeast in situ was also proposed.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/17252
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Zheng Pei,Zhang Kaiqiang,Dang Yu,et al. Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation[J]. JOURNAL OF NANOMATERIALS,2015.
APA	Zheng Pei.,Zhang Kaiqiang.,Dang Yu.,Bai Bo.,Guan Weisheng.,...&Bai, B .(2015).Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation.JOURNAL OF NANOMATERIALS.
MLA	Zheng Pei,et al."Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation".JOURNAL OF NANOMATERIALS (2015).