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Core-shell TiO2-based photocatalyst swith specific composition, morphology, and functionality have attracted considerable attention for their excellent degradation properties on organic pollutants via a photocatalytic oxidation process. Herein, a N-TiO2@NH2-MIL-88(Fe) core-shell structure was prepared by coating NH2-MIL-88(Fe) on nitrogen-doped TiO2 (N-TiO2) nanoparticles. Introduction of heteroatomnitrogen to pure TiO2 expands the spectral response range, leading to enhanced quantum efficiency of photocatalyst. Furthermore, Loading NH2-MIL-88(Fe) on N-TiO2 improved the adsorption ability of the nanocomposites due to the porous tunnels of NH2-MIL-88(Fe). The resulted 2-MIL-88(Fe) rapidly, partially reduced Fe3+ to Fe2+ in NH2-MIL-88(Fe), and further enhanced the Fenton effect to efficiently degrade methycore-shell N-TiO2@NH2-MIL-88(Fe) nanocomposites realized transfer photo excited electrons from N-TiO2 to NHlene blue dye (MB) under visible light (λ ≥ 420 nm) with the assistance of H2O2.
Core-shell TiO2-based photocatalyst swith specific composition, morphology, and functionality have attracted considerable attention for their excellent degradation properties on organic pollutants via a photocatalytic oxidation process. Herein, a N-TiO2@NH2-MIL-88(Fe) core-shell structure was prepared by coating NH2-MIL-88(Fe) on nitrogen-doped TiO2 (N-TiO2) nanoparticles. Introduction of heteroatomnitrogen to pure TiO2 expands the spectral response range, leading to enhanced quantum efficiency of photocatalyst. Furthermore, Loading NH2-MIL-88(Fe) on N-TiO2 improved the adsorption ability of the nanocomposites due to the porous tunnels of NH2-MIL-88(Fe). The resulted core-shell N-TiO2@NH2-MIL-88(Fe) nanocomposites realized transfer photo excited electrons from N-TiO2 to NH2-MIL-88(Fe) rapidly, partially reduced Fe3+ to Fe2+ in NH2-MIL-88(Fe), and further enhanced the Fenton effect to efficiently degrade methylene blue dye (MB) under visible light (λ ≥ 420 nm) with the assistance of H2O2.
摘要:
Core-shell TiO2-based photocatalyst swith specific composition, morphology, and functionality have attracted considerable attention for their excellent degradation properties on organic pollutants via a photocatalytic oxidation process. Herein, a N-TiO2@NH2-MIL-88(Fe) core-shell structure was prepared by coating NH2-MIL-88(Fe) on nitrogen-doped TiO2 (N-TiO2) nanoparticles. Introduction of heteroatomnitrogen to pure TiO2 expands the spectral response range, leading to enhanced quantum efficiency of photocatalyst. Furthermore, Loading NH2-MIL-88(Fe) on N-TiO2 improved the adsorption ability of the nanocomposites due to the porous tunnels of NH2-MIL-88(Fe). The resulted core-shell N-TiO2@NH2-MIL-88(Fe) nanocomposites realized transfer photo excited electrons from N-TiO2 to NH2-MIL-88(Fe) rapidly, partially reduced Fe3+ to Fe2+ in NH2-MIL-88(Fe), and further enhanced the Fenton effect to efficiently degrade methylene blue dye (MB) under visible light (λ ≥ 420 nm) with the assistance of H2O2.