Mesoporous NH2-MIL-101(Cr) material as well as preparation method and application thereof
A mesoporous and mesoporous structure technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve problems such as discussion, and achieve light weight, high selectivity, and high adsorption Effect
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Embodiment 1
[0027] Example 1: This mesoporous NH 2 -MIL-101(Cr) material, material particle size is 250nm, specific surface area is 836m 2 / g, the average pore size is 3.12nm, with a mesoporous structure;
[0028] The preparation method of above-mentioned material is as follows:
[0029] (1) Adding Cr(NO 3 ) 3 9H 2 O and NH 2 BDC was dissolved in 30mL DMF at a molar ratio of 0.9:1, ultrasonically dispersed for 10min, and then transferred to a hydrothermal reactor for 24h at 100°C;
[0030] (2) Suction filter the product after cooling down, rinse with DMF three times and dry at 100°C;
[0031] (3) Dissolve the dried product in step (2) in DMF and purify at 120°C for 24 hours, replace DMF every 12 hours, filter with suction and rinse with DMF three times, then dry at 100°C;
[0032] (4) Dissolve the purified solid in step (3) in CH 3 CH 2 Purified in OH at 60°C for 24h, filtered with suction and washed with CH 3 CH 2 OH was washed three times, and then vacuum-dried at 100°C for 1...
Embodiment 2
[0034] Example 2: This mesoporous structure NH 2 -MIL-101(Cr) material, material particle size is 240nm, specific surface area is 724m 2 / g, the average pore size is 3.25nm, with a mesoporous structure;
[0035] The preparation method of above-mentioned material is as follows:
[0036] (1) Adding Cr(NO 3 ) 3 9H 2 O and NH 2 BDC was dissolved in 50mL DMF at a molar ratio of 1:1, ultrasonically dispersed for 20min, and then transferred to a hydrothermal reactor for 56h at 120°C;
[0037] (2) Suction filter the product, rinse it with DMF three times, and then vacuum-dry it at 100°C;
[0038] (3) Dissolve the dried product in step (2) in DMF and purify at 120°C for 24 hours, replace it every 12 hours, filter with suction and rinse with DMF three times, then vacuum-dry at 100°C;
[0039] (4) Dissolve the purified solid in step (3) in CH 3 CH 2 Purified in OH at 80°C for 24 h, filtered with suction and washed with CH 3 CH 2 OH was washed three times, and then vacuum-dried a...
Embodiment 3
[0041] Example 3: The present mesoporous structure NH 2 -MIL-101(Cr) material, material particle size is 200nm, specific surface area is 958m 2 / g, the average pore diameter is 3.34nm, with a microporous structure;
[0042] The preparation method of above-mentioned material is as follows:
[0043] (1) Adding Cr(NO 3 ) 3 9H 2 O and NH 2 BDC was dissolved in 70mL DMF at a molar ratio of 1.1:1, ultrasonically dispersed for 30min, and then transferred to a hydrothermal reactor for 72h at 150°C;
[0044] (2) Suction filter the product after cooling down, rinse with DMF three times and then vacuum dry at 100°C;
[0045] (3) Dissolve the dried product in step (2) in DMF and purify at 150°C for 24 hours, replace it every 12 hours, filter it with suction and rinse it with DMF three times, then vacuum-dry it at 100°C;
[0046] (4) Dissolve the purified solid in step (3) in CH 3 CH 2 Purified in OH at 90°C for 24h, filtered with suction and washed with CH 3 CH 2 OH was washed ...
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