Preparation method for vanadium sulfide/attapulgite nanocomposite with wide spectral response and application
A nano-composite material and attapulgite technology, which is applied in the wide-spectrum response vanadium tetrasulfide/attapulgite nano-composite material and its preparation, and in the field of photocatalytic nitrogen fixation, can solve the problems of easy recombination of photogenerated electrons and holes, and achieve The effect of prolonging life, improving efficiency, and uniform particle size
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Embodiment 1
[0018] (1) Add 0.67g of Na 3 VO 4 12H 2 O, 0.50 g of CH 3 CSNH 2 1. Add 0.5g of ATP to an appropriate amount of deionized water, and ultrasonically disperse it to make it evenly mixed. Na 3 VO 4 At the molecular level, it is adsorbed by the oxygen-containing functional groups on the surface of ATP and fixed on the surface of ATP.
[0019] (2) Transfer the solution to a microwave hydrothermal kettle for microwave hydrothermal reaction, set the power to 400W, set the temperature to 150°C, and set the time to 5h;
[0020] (3) Centrifuge the product prepared in step (2) with a centrifuge (10000r / min, 2min), wash it with deionized water for 3 times, and dry it in an oven to obtain 60wt% VS 4 / ATP composite photocatalytic material.
[0021] Scanning electron microscopy (SEM) was performed on the obtained samples ( figure 1 ) and transmission electron microscope TEM observation ( figure 2 ), it can be seen that VS is evenly compounded on the surface of ATP 4 Nanoparticles...
Embodiment 2
[0026] (1) 0.33g of Na 3 VO 4 12H 2 O, 0.25g of CH 3 CSNH 2 1. Add 0.5g of ATP to an appropriate amount of deionized water, and ultrasonically disperse it to make it evenly mixed. Na 3 VO 4 At the molecular level, it is adsorbed by the oxygen-containing functional groups on the surface of ATP and fixed on the surface of ATP.
[0027] (2) Transfer the solution to a microwave hydrothermal kettle for microwave hydrothermal reaction, set the power to 400W, set the temperature to 160°C, and set the time to 4h;
[0028] (3) Centrifuge the product prepared in step (2) with a centrifuge (10000r / min, 2min), wash it with deionized water for 3 times, and dry it in an oven to obtain 30wt% VS 4 / ATP composite photocatalytic material.
[0029] Subsequent detection was as in Example 1.
[0030] After 4h light, 30wt% VS 4 / ATP reached the ammonium ion generation rate of 106.3μmol·g cat –1 h –1 amount of nitrogen fixation.
Embodiment 3
[0032] (1) Add 0.45g of Na 3 VO 4 12H 2 O, 0.34g of CH 3 CSNH 2 1. Add 0.5g of ATP to an appropriate amount of deionized water, and ultrasonically disperse it to make it evenly mixed. Na 3 VO 4 At the molecular level, it is adsorbed by the oxygen-containing functional groups on the surface of ATP and fixed on the surface of ATP.
[0033](2) Transfer the solution to a microwave hydrothermal kettle for microwave hydrothermal reaction, set the power to 400W, set the temperature to 170°C and set the time to 3h;
[0034] (3) Centrifuge the product prepared in step (2) with a centrifuge (10000r / min, 2min), wash it with deionized water for 3 times, and dry it in an oven to obtain 40wt% VS 4 / ATP composite photocatalytic material.
[0035] Subsequent detection was as in Example 1.
[0036] After 4h light, 40wt% VS 4 / ATP reached the ammonium ion generation rate of 121.7μmol·g cat –1 h –1 amount of nitrogen fixation.
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