A rapidly degrading malachite green ag 2 moo 4 /ag 2 oMaterial preparation method
A malachite green and rapid degradation technology, applied in chemical instruments and methods, water/sludge/sewage treatment, metal/metal oxide/metal hydroxide catalysts, etc., can solve catalyst recovery troubles, complex synthesis steps, Environmental secondary pollution and other problems, to achieve the effect of short decolorization time, high reuse rate, simple preparation process
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Embodiment 1
[0029] A Rapidly Degrading Malachite Green Ag 2 MoO 4 / Ag 2 The O material preparation method includes the following steps:
[0030] Ag preparation by hydrothermal method 2 MoO 4 / Ag 2 O complex, the specific operation is as follows: in the presence of 20.0mL of 1.2M Na 2 MoO 4 ·2H 2 Add 0.1M Na to the beaker of O 2 HPO 4 ·12H 2 O 20mL, continue stirring for 5min, add 2.2mL HNO 3 , 0.6M AgNO was added dropwise 3 10mL, continue to stir for 15min, slowly add 4M NaOH to pH=7, let stand for 15min, discard most of the supernatant, take about 20mL of the suspension and transfer it to a 25mL polytetrafluoroethylene-lined autoclave, 120 React in a constant temperature oven for 14 h, filter with suction, wash with pure water 3 times, transfer to a crucible, and dry in an incubator at 80 °C for 12 h for use.
[0031] Depend on figure 1 It can be seen that the Ag obtained by the above preparation method 2 MoO 4 / Ag 2 XRD characterization results of O material.
[0032]...
Embodiment 2
[0034] The silver-based Fenton heterogeneous catalyst prepared in Example 1 was applied to degrade the MG in the wastewater, and the results were as follows image 3 , as shown in Figure 4.
experiment example
[0043] In the traditional Fenton reaction, iron ions are not easy to be recycled, resulting in secondary pollution. In this study, the use of Ag 2 MoO 4 / Ag 2 The heterogeneous phase of O was recovered and the reuse rate was determined. Depend on Figure 5 It can be seen that Ag 2 MoO 4 / Ag 2 O catalyst binds H after 5 recoveries 2 O 2 The degradation rate of MG was 87.9% at 5min, 91.8% at 20min, and 93.6% at 40min, indicating that Ag 2 MoO 4 / Ag 2 O recycling performance is good, and has a good application prospect.
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