Browsing by Author Han, Thi Phuong Nga

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  • Advanced-oxidation-of-rhodamine-B-with-hydrogen-peroxide-over-ZnCr-layered-double-hydroxide-catalysts_2017_Journal-of-Science-Advanced-Materials-and-D.pdf.jpg
  • Article


  • Authors: Nguyen, Tien Thao; Han, Thi Phuong Nga; Nguyen, Que Vo; Hong, Dieu Khanh Nguyen (2017)

  • Zn/Cr layered zinc hydroxide materials with different molar ratios of Cr/Zn have been synthesized through the coprecipitation method at pH of 9.0e9.5. At high Cr/Zn molar ratios of 0.5/1e1/3, the ma-terials possess some layered structure with carbonate anions between the interlayer galleries. The cat-alysts present uniform particle sizes and quite high surface area. An isomorphous substitution of Zn 2þ by Cr 3þ in the brucite-like sheets makes the layered Cr-doped zinc hydroxides acting as catalysts for efficient oxidation of rhodamine B with H2O2solution. The experimental results indicated that the intra-lattice Cr 3þ ions are more active than Cr2O3 components in the oxidative remov...

  • document(14).pdf.jpg
  • Article


  • Authors: Nguyen, Tien Thao; Ta, Thi Huyen; Doan, Thi Huong Ly; Han, Thi Phuong Nga (2016)

  • Sepiolite has been treated with ethanol under isothermal conditions and characterized by XRD, SEM, FT-IR, and BET measurements. The materials showed a typical lamellar structure and fibrous morphology. After treatment of sepiolite, the surface area of the solid is significantly improved while the material structure still remains. Both fresh and treated sepiolites were used as adsorbents for the adsorption of rhodamine B in water. In isothermal conditions, both samples exhibit a good ability to adsorb rhodamine B in water. Experimental results indicate that the adsorption of rhodamine B for sepiolite was fitted to the Langmuir and Freundlich adsorption models. The treate...

Browsing by Author Han, Thi Phuong Nga

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 2 of 2
  • Advanced-oxidation-of-rhodamine-B-with-hydrogen-peroxide-over-ZnCr-layered-double-hydroxide-catalysts_2017_Journal-of-Science-Advanced-Materials-and-D.pdf.jpg
  • Article


  • Authors: Nguyen, Tien Thao; Han, Thi Phuong Nga; Nguyen, Que Vo; Hong, Dieu Khanh Nguyen (2017)

  • Zn/Cr layered zinc hydroxide materials with different molar ratios of Cr/Zn have been synthesized through the coprecipitation method at pH of 9.0e9.5. At high Cr/Zn molar ratios of 0.5/1e1/3, the ma-terials possess some layered structure with carbonate anions between the interlayer galleries. The cat-alysts present uniform particle sizes and quite high surface area. An isomorphous substitution of Zn 2þ by Cr 3þ in the brucite-like sheets makes the layered Cr-doped zinc hydroxides acting as catalysts for efficient oxidation of rhodamine B with H2O2solution. The experimental results indicated that the intra-lattice Cr 3þ ions are more active than Cr2O3 components in the oxidative remov...

  • document(14).pdf.jpg
  • Article


  • Authors: Nguyen, Tien Thao; Ta, Thi Huyen; Doan, Thi Huong Ly; Han, Thi Phuong Nga (2016)

  • Sepiolite has been treated with ethanol under isothermal conditions and characterized by XRD, SEM, FT-IR, and BET measurements. The materials showed a typical lamellar structure and fibrous morphology. After treatment of sepiolite, the surface area of the solid is significantly improved while the material structure still remains. Both fresh and treated sepiolites were used as adsorbents for the adsorption of rhodamine B in water. In isothermal conditions, both samples exhibit a good ability to adsorb rhodamine B in water. Experimental results indicate that the adsorption of rhodamine B for sepiolite was fitted to the Langmuir and Freundlich adsorption models. The treate...