A kind of preparation method of copper borate with rod-shaped single crystal structure
A single crystal structure, copper borate technology, applied in borates, chemical instruments and methods, boron oxide compounds, etc., can solve the problems of high reaction temperature, unsuitable for industrial production, etc., achieve strong light degradation ability, and simple method Ease of operation and the effect of reducing production costs
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Embodiment 1
[0031] Weigh 2.5mmol (0.5g) of copper acetate (Cu(CH 3 COO) 2 ·H 2O), 7.5mmol glucose (1.35g) was dissolved in 20mL distilled water, and magnetically stirred for 2h. Dissolve 2.5mmol (1.55g) of boric acid in 30mL of deionized water, add the obtained aqueous solution of boric acid to the aforementioned reaction solution, and stir magnetically for 2h. Then dry the mixed solution in an oven at 150°C to obtain a brown xerogel, which is then roasted at 850°C for 6 hours to obtain a dark green powder, which is washed with 0.1mol / L hydrochloric acid and deionized water at 60°C respectively 3 to 4 times, centrifuge, and dry the powder at 60°C to obtain Cu 3 B 2 o 6 Single crystal 0.21g. Detected by XRD, as attached figure 1 As shown, the resulting Cu 3 B 2 o 6 It is a pure substance, the corresponding PDF card number: 28-398; tested by SEM, if attached figure 2 As shown, sample Cu 3 B 2 o 6 It is rod-shaped, with a diameter of about 300-600 nm and a length of about 6 μm...
Embodiment 2
[0034] Take by weighing 2.5mmol of copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 5.0mmol malic acid was dissolved in 20mL distilled water, and magnetically stirred for 3h. Dissolve 2.5 mmol of boric acid in 30 mL of deionized water, and then add this solution dropwise to the aforementioned reaction solution, and magnetically stir for 4 h. Then the mixed solution was dried in an oven at 140°C to obtain a brown gel, which was roasted at 900°C for 7 hours to obtain a dark green powder, which was washed with 0.21mol / L hydrochloric acid and deionized water at 80°C for 3-3 hours. 4 times, centrifuged, and the powder was dried at 80°C to obtain Cu 3 B 2 o 6 sample. After XRD detection, the results are attached figure 1 , the resulting Cu 3 B 2 o 6 It is a pure substance, corresponding PDF card number: 28-398; tested by HRTEM, as attached image 3 shown, indicating that the prepared Cu 3 B 2 o 6 a single crystal structure. After the UV-vis test, the UV-visible diffuse reflectan...
Embodiment 3
[0037] Take by weighing 2.5mmol of copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 7.5mmol glucose was dissolved in 20mL distilled water, and magnetically stirred for 3h. Dissolve 1.75 mmol of boric acid in 30 mL of deionized water, and then add this solution dropwise to the aforementioned reaction solution, and magnetically stir for 2 h. Then dry the mixture in an oven at 120°C to obtain a brown gel, which is then roasted at 850°C for 7 hours to obtain a dark green powder, which is washed with 0.4mol / L hydrochloric acid and deionized water at 80°C for 3-3 hours. 4 times, centrifuged, and the powder was dried at 60°C to obtain Cu 3 B 2 o 6 sample. As in Example 1, the resulting Cu 3 B 2 o 6 It is a pure substance and has a single crystal structure.
[0038] Take 40mg of Cu obtained above 3 B 2 o 6 Add 35mL methylene blue solution (35mg / L) to the powder, react under the conditions of 600nm visible light, 25°C, 1200rpm, take samples regularly and determine the concentration o...
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