A kind of zinc oxide and gold nanoparticle composite material and preparation method thereof
A gold nanoparticle and composite material technology, which is applied in the field of functional material preparation, can solve the problems of high exciton binding energy, large band gap, and limit the ability of photocatalytic degradation of organic matter, and achieves good application prospects, low cost, and increased light response. range effect
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Embodiment 1
[0028] 1.1 Add 2.5 mmol of zinc nitrate, 3.75 mmol of tartaric acid and 2.5 mmol of potassium hydroxide into 50 mL of deionized water, stir well at room temperature to obtain a uniform milky white emulsion;
[0029] 1.2 Transfer the emulsion described in step 1.1 to the reaction kettle, hydrothermally treat it at 100 °C for 6 h, and then obtain the precursor of zinc oxide through centrifugal washing and drying after the reaction is completed, and then place the precursor at 300 °C in an air atmosphere Calcined for 2 h to obtain zinc oxide;
[0030] 1.3 Add 0.2 mmol of zinc oxide prepared in step 1.2 into 20 mL of deionized water, and stir magnetically for 6 hours to obtain a uniform zinc oxide aqueous solution; -1 The chloroauric acid is added dropwise into the obtained zinc oxide solution, and the purple zinc oxide and gold nanoparticle composite material solution is obtained through stirring, and finally the zinc oxide and gold nanoparticle composite material is obtained thr...
Embodiment 2
[0033] 2.1 Add 2.5 mmol of zinc nitrate, 3.75 mmol of tartaric acid and 2.5 mmol of potassium hydroxide into 50 mL of deionized water, stir well at room temperature to obtain a uniform milky white emulsion;
[0034] 2.2 Transfer the emulsion described in step 2.1 to the reaction kettle, hydrothermally treat it at 150°C for 6 h, centrifuge, wash and dry to obtain the precursor of zinc oxide after the reaction is completed, and then place the precursor at 300°C in an air atmosphere Calcined for 2 h to obtain zinc oxide;
[0035] 2.3 Add 0.2 mmol of zinc oxide prepared in step 2.2 into 20 mL of deionized water, and stir magnetically for 6 hours to obtain a uniform zinc oxide aqueous solution; -1 The chloroauric acid is added dropwise into the obtained zinc oxide solution, and the purple zinc oxide and gold nanoparticle composite material solution is obtained through stirring, and finally the zinc oxide and gold nanoparticle composite material is obtained through centrifugal washi...
Embodiment 3
[0038] 3.1 Add 2.5 mmol of zinc nitrate, 3.75 mmol of tartaric acid and 2.5 mmol of potassium hydroxide into 50 mL of deionized water, and stir well at room temperature to obtain a uniform milky white emulsion;
[0039] 3.2 Transfer the emulsion described in step 3.1 to the reaction kettle, hydrothermally treat it at 200°C for 3 h, and after the reaction is finished, undergo centrifugal washing and drying to obtain the precursor of zinc oxide, and then place the precursor at 300°C in an air atmosphere Calcined for 2 h to obtain zinc oxide;
[0040] 3.3 Add 0.2 mmol of zinc oxide prepared in step 3.2 into 20 mL of deionized water, and stir magnetically for 6 hours to obtain a uniform zinc oxide aqueous solution; -1 The chloroauric acid is added dropwise into the obtained zinc oxide solution, and the purple zinc oxide and gold nanoparticle composite material solution is obtained through stirring, and finally the zinc oxide and gold nanoparticle composite material is obtained thr...
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