Preparation method of atomic-scale catalyst for degrading VOCs at normal temperature by taking organic membrane as carrier
An atomic-level, organic membrane technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem that catalysts are easily blown by airflow and affect catalytic activity, etc. Problems, to achieve the effect of atom dispersion, strong anti-poisoning ability, and easy to be blown off
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[0016] Based on the above mechanism, an organic film of the present invention is a method for preparing an atomic-level catalyst for degrading VOCs at room temperature, comprising the following steps:
[0017] Step 1. Dissolve polysulfone with a mass ratio of 1:(35-45) to N,N-dimethylformamide in analytically pure N,N-dimethylformamide, and stir magnetically at 20-30°C 12-15h, to obtain solution A; then, the AgNO with polysulfone mass ratio of 1: (33-50) 3 The crystal powder is added to solution A, and ultrasonically treated for 1.5-2 hours to obtain a homogeneously mixed electrospinning precursor solution B;
[0018] Step 2. Use an electrospinning machine to process the electrospinning precursor solution B to obtain a membrane material. The processing voltage is 15kV high voltage, and the feeding speed of the electrospinning precursor solution B is 0.8-1mL / h. The electrospinning process Medium control temperature is 21-25°C, relative humidity is 40-50%;
[0019] Step 3, dry...
Embodiment 1
[0021] Step 1. Dissolve polysulfone with a mass ratio of 1:35 to N,N-dimethylformamide in analytically pure N,N-dimethylformamide, and magnetically stir at 20°C for 12 hours to obtain solution A; Then, AgNO with polysulfone mass ratio of 1:33 3 The crystal powder was added to solution A, and ultrasonically treated for 1.5 hours to obtain a homogeneously mixed electrospinning precursor solution B;
[0022] Step 2. Use an electrospinning machine to process the electrospinning precursor solution B to obtain a membrane material. The processing voltage is 15kV high voltage, and the feeding rate of the electrospinning precursor solution B is 0.8mL / h. During the electrospinning process The control temperature is 21°C and the relative humidity is 40%;
[0023] Step 3, drying the membrane material obtained after being treated with an electrospinning machine in a vacuum oven at 50° C. for 10 hours to obtain an atomic-level Ag / polysulfone catalyst with catalytic performance.
[0024] C...
Embodiment 2
[0026] Step 1. Dissolve polysulfone with a mass ratio of 1:40 to N,N-dimethylformamide in analytically pure N,N-dimethylformamide, and magnetically stir at 25°C for 13 hours to obtain solution A; Then, AgNO with polysulfone mass ratio of 1:34 3 The crystal powder was added to solution A, and ultrasonically treated for 1.8 hours to obtain a homogeneously mixed electrospinning precursor solution B;
[0027] Step 2. Use an electrospinning machine to process the electrospinning precursor solution B to obtain a membrane material. The processing voltage is 15kV high voltage, and the feeding speed of the electrospinning precursor solution B is 0.9mL / h. During the electrospinning process The control temperature is 22°C and the relative humidity is 45%;
[0028] Step 3, drying the membrane material obtained after being treated with an electrospinning machine in a vacuum oven at 55° C. for 11 hours to obtain an atomic-level Ag / polysulfone catalyst with catalytic performance.
[0029] ...
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