A nanophotocatalyst for upconverting light and its application in visible light hydrolysis for hydrogen production
A nano-photocatalyst, hydrolysis hydrogen production technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, nanotechnology, etc., can solve the problem of low photocatalytic efficiency of catalysts and achieve stable properties , Efficiency improvement, the effect of improving efficiency
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Embodiment 1
[0032] Example 1 An up-conversion light Er 3+ :Y 3 Al 5 o 12 / Pt-KNbO 3 Nano photocatalyst, its preparation method is as follows:
[0033] Weigh Er with a mass ratio of 0.1:1 3+ :Y 3 Al 5 o 12 and KNbO 3 Mix 1.5 g of nanopowder with 15 mL, 1 g / mL chloroplatinic acid solution, add 20 mL of distilled water, disperse by ultrasonic at room temperature for 30 min, heat and boil for 30 min, then dry for 36.0 h, and grind the resulting solid mixture, Then calcined at 300 °C for 2.0 h to obtain Er 3+ :Y 3 Al 5 o 12 / Pt-KNbO 3 Nano powder;
[0034] The Er 3+ :Y 3 Al 5 o 12 Preparation of up-conversion ultraviolet luminescent material, the Er 3+ :Y 3 Al 5 o 12 The preparation method of nanometer powder is: the Er of 0.01 2 o 3 and a Y of 2.2 2 o 3 The nano powder was dissolved in concentrated nitric acid with a mass fraction of 65% and heated and stirred by magnetic force until it was colorless and transparent to obtain a rare earth ion solution; then weighed 1...
Embodiment 2
[0037] Example 2 An up-conversion light Er 3+ :Y 3 Al 5 o 12 / Pt-KNbO 3 Nano photocatalyst, its preparation method is as follows:
[0038] Weigh Er with a mass ratio of 1:1 3+ :Y 3 Al 5 o 12 and KNbO 3 Mix 1.5 g of nano powder with 20 mL, 1 g / mL chloroplatinic acid solution, add 40 mL of distilled water, disperse by ultrasonic at room temperature for 30 min, heat and boil for 30 min, then dry for 36.0 h, and grind the resulting solid mixture, Then calcined at 700 °C for 2.0 h to obtain Er 3+ :Y 3 Al 5 o 12 / Pt-KNbO 3 Nano powder;
[0039] The Er 3+ :Y 3 Al 5 o 12 Preparation of up-conversion ultraviolet luminescent material, the Er 3+ :Y 3 Al 5 o 12 The preparation method of nanopowder is: the Er of 0.02 g 2 o 3 and 2.3g of Y 2 o 3 The nano powder was dissolved in concentrated nitric acid with a mass fraction of 65% and heated and stirred by magnetic force until it was colorless and transparent to obtain a rare earth ion solution; then weighed 13g of ...
Embodiment 3
[0042] Example 3 An up-conversion light Er 3+ :Y 3 Al 5 o 12 / Pt-KNbO 3 Nano photocatalyst, its preparation method is as follows:
[0043] Weigh Er with a mass ratio of 0.5:1 3+ :Y 3 Al 5 o 12 and KNbO 3 Mix 1.5 g of nanopowder with 18 mL of 1 g / mL chloroplatinic acid solution, add 30 mL of distilled water, ultrasonically disperse at room temperature for 30 min, heat and boil for 30 min, then dry for 36.0 h, grind the resulting solid mixture, and then Calcined at 500 °C for 2.0 h to obtain Er 3+ :Y 3 Al 5 o 12 / Pt-KNbO 3 Nano powder;
[0044] The Er 3+ :Y 3 Al 5 o 12 Preparation of up-conversion ultraviolet luminescent material, the Er 3+ :Y 3 Al 5 o 12 The preparation method of nanopowder is: the Er of 0.015 g 2 o 3 and 2.25g of Y 2 o 3 The nano powder was dissolved in concentrated nitric acid with a mass fraction of 65% and heated and stirred by magnetic force until it was colorless and transparent to obtain a rare earth ion solution; then weighed 1...
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