A preparation method of znal-ldo@nb2o5 photocatalytic material
A photocatalytic material, nb2o5·nh2o technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as limiting the application of dye wastewater
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Embodiment 1
[0032] Precursor Nb 2 o 5 ·nH 2 Preparation of O microspheres
[0033] First, clean the reactor, as follows: Take 10 mL of hydrofluoric acid and 50 mL of water and pour them into the reactor, conduct a hydrothermal reaction at 180 °C for 12 h, and then rinse with deionized water for 4-5 times.
[0034] Then, weigh 3 mmol ammonium niobium oxalate (1.5383g) and dissolve it in 70 mL of a 1:1 mixture of water and absolute ethanol, sonicate to a clear and transparent solution, transfer it to a 100 ml reaction kettle, and conduct a hydrothermal reaction at 180 °C 24 h; filter with suction, wash with a large amount of distilled water (about 1000 ml of water), dry the white powder obtained by suction filtration reaction at room temperature in the air, and pass XRD ( figure 2 (b)) and FT-IR ( Figure 5 (a) Characterization proves that the as-synthesized material is a single-phase Nb 2 o 5 ·nH 2 O. SEM characterization ( image 3 (a)) shows that the synthesized material has a s...
Embodiment 2
[0036] The ZnAl-LDO-1@Nb of this embodiment 2 o 5 The preparation method of photocatalytic material is as follows:
[0037] (1) Weigh 0.5 g of Nb prepared in Example 1 2 o 5 ·nH 2 O microspheres were poured into 200 mL distilled water, and ultrasonicated for 35 min with an ultrasonic cell pulverizer to obtain a milky white suspension. 2 o 5 ·nH 2 O microsphere suspension was poured into a three-neck flask, and then, weighed 0.5950 g Zn(NO 3 ) 2 ·6H 2 O(0.01 mol / L), 0.3751 g Al(NO 3 ) 3 9H 2 O (0.005 mol / L) and 0.4204 g urea (0.035 mol / L) were poured into a three-necked flask, heated to 90 °C in an oil bath, condensed and refluxed using a spherical condenser, while stirring continuously, and reacted for 30 hours. The product was suction filtered using a sand core funnel, washed three times with distilled water and twice with absolute ethanol, and the solid obtained by suction filtration was dried in air at room temperature. The resulting product is denoted as ZnAl-...
Embodiment 3
[0040] The ZnAl-LDO-0.75@Nb of this embodiment 2 o 5 The preparation method of photocatalytic material is as follows:
[0041] (1) Weigh 0.5 g of Nb prepared in Example 1 2 o 5 ·nH 2 O microspheres were poured into 200 mL of distilled water, and ultrasonicated for 35 min with an ultrasonic cell pulverizer to obtain a milky white suspension. 2 o 5 ·nH 2 O microsphere suspension was poured into a three-neck flask; then, weighed 0.4463 g Zn(NO 3 ) 2 ·6H 2 O (0.0075 mol / L), 0.2813 g Al(NO 3 ) 3 9H 2 O (0.00375 mol / L) and 0.3153 g urea (0.02625 mol / L) were poured into a three-neck flask, heated in an oil bath to 100 °C, condensed and refluxed with a spherical condenser while stirring continuously, and reacted for 24 h; the product was obtained using a sand core funnel Suction filtration was performed, washed three times with distilled water and twice with absolute ethanol, and the solid obtained by suction filtration was dried in air at room temperature. The resulting ...
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