Preparation method of self-supporting heteroatom doped sludge carbon electrode material
A technology of electrode material and sludge charcoal, which is applied in the field of electrocatalysis, can solve the problems of high consumption, low efficiency and low production cost, and achieve the effect of increasing active sites, reducing production cost and increasing active surface area
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Embodiment 1
[0038] Such as figure 1 Shown, a kind of preparation method of self-supporting heteroatom-doped sludge carbon electrode material comprises the following steps:
[0039] 1) Dry the sludge in the digester naturally under outdoor conditions, then put it into an oven to dry the sludge to obtain a block dry sludge, and the drying temperature is 105°C; take out the block dry sludge and put it into a pulverizer Grinding and grinding in medium, and then passing through a 60-mesh sieve to obtain fine sludge powder; then put the fine sludge powder in a container, add deionized water for magnetic stirring and cleaning for 1 hour, filter through a 0.45 μm filter membrane, and then place it in an oven Dry at 60°C for 6 hours to obtain dry sludge powder.
[0040] 2) Put the sludge dry powder in a tube-type atmosphere furnace with a flow rate of 250mL / min inert gas N 2 , pre-carbonize at 450°C for 1 h to obtain the first sludge charcoal powder, use deionized water and absolute ethanol to s...
Embodiment 2
[0044] Such as figure 1 Shown, a kind of preparation method of self-supporting heteroatom-doped sludge carbon electrode material comprises the following steps:
[0045] 1) Dry the sludge in the digester naturally under outdoor conditions, then put it into an oven to dry the sludge to obtain a block dry sludge, and the drying temperature is 80°C; take out the block dry sludge and put it into a pulverizer Grinding and grinding in medium, and then passing through a 60-mesh sieve to obtain fine sludge powder; then put the fine sludge powder in a container, add deionized water for magnetic stirring and cleaning for 1 hour, filter through a 0.45 μm filter membrane, and then place it in an oven Dry at 80°C for 5.5 hours to obtain dry sludge powder.
[0046] 2) Put the sludge dry powder in a tube-type atmosphere furnace with a flow rate of 300mL / min inert gas N 2 , pre-carbonize at 500°C for 1 h to obtain the first sludge charcoal powder, use deionized water and absolute ethanol to ...
Embodiment 3
[0050] Such as figure 1 Shown, a kind of preparation method of self-supporting heteroatom-doped sludge carbon electrode material comprises the following steps:
[0051] 1) Dry the sludge in the digester naturally under outdoor conditions, then put it into an oven to dry the sludge to obtain a block dry sludge, and the drying temperature is 105°C; take out the block dry sludge and put it into a pulverizer Grinding and grinding in medium, and then passing through a 60-mesh sieve to obtain fine sludge powder; then put the fine sludge powder in a container, add deionized water for magnetic stirring and cleaning for 1 hour, filter through a 0.45 μm filter membrane, and then place it in an oven Dry at 60°C for 6 hours to obtain dry sludge powder.
[0052] 2) Put the sludge dry powder in a tube-type atmosphere furnace with a flow rate of 200mL / min inert gas N 2 , pre-carbonize at 400°C for 2 hours to obtain the first sludge charcoal powder, use deionized water and absolute ethanol ...
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