Preparation and application of a carbon nitride/lanthanum oxychloride composite material
A technology of composite materials and lanthanum oxide, applied in chemical/physical processes, physical/chemical process catalysts, hydrogen production, etc., can solve problems such as low photocatalytic efficiency, affecting practical applications, and inability to achieve complete water decomposition. The effect of low cost and simple preparation process
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Embodiment 1
[0019] Example 1 Composite material C 3 N 4 / Preparation of LaOCl
[0020] Weigh 1.5 g of lithium chloride, 1.5 g of potassium chloride, 1.0 g of melamine and 0.5 g of lanthanum oxide, put them in a mortar, grind them thoroughly and mix them evenly, put them into a corundum crucible with a lid, and place them in a muffle furnace at 550 °C After constant temperature treatment for 3 h, the temperature was naturally lowered to room temperature, the resulting mixture was washed with deionized water until the ion concentration was less than 10 ppm, and dried at 60 °C for 6 h to obtain the composite material C 3 N 4 / LaOCl.
[0021] figure 1 C prepared for this example 3 N 4 / LaOCl sample X-ray powder diffraction pattern. It can be seen from the figure that the sample presents the characteristic diffraction peaks of tetragonal LaOCl (JCPDS: 08~0477), and no C 3 N 4 characteristic diffraction peaks.
[0022] figure 2 C prepared for this example 3 N 4 / LaOCl sample scan...
Embodiment 2
[0024] Example 2 Composite material C 3 N 4 / Preparation of LaOCl
[0025] Weigh 1.0 g of lithium chloride, 1.0 g of potassium chloride, 1.0 g of melamine and 1.0 g of lanthanum oxide, put them in a mortar, grind them thoroughly and mix them evenly, put them into a corundum crucible with a cover, and place them in a muffle furnace at 500 °C After constant temperature treatment for 2 h, the temperature was naturally lowered to room temperature, washed with deionized water until the ion concentration was less than 10 ppm, and dried at 60 °C for 6 h to obtain the composite material C 3 N 4 / LaOCl.
Embodiment 3
[0026] Example 3 Sample C 3 N 4 preparation of
[0027] Weigh 1.5 g of lithium chloride, 1.5 g of potassium chloride and 1.0 g of melamine in a mortar, grind and mix well, put them into a corundum crucible with a cover, and place them in a muffle furnace for 2 h at a constant temperature of 500 °C. After naturally cooling down to room temperature, it was washed with deionized water until the ion concentration was 3 N 4 .
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