Method for synthesizing ZnZr-MOF-LDH nano tanning agent based on template guiding method
A znzr-mof-ldh, guided method technology, applied in small raw hide/large raw hide/leather/fur treatment, tanning treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc. The problem of poor absorption of tanning agents, to achieve the effect of reducing pollution, promoting absorption, and simple synthesis process
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[0037] The preparation method of the present invention comprises the following steps:
[0038] (1) Preparation of Zr-MOF:
[0039] 1.4-1.6g ZrCl 4 , 0.5g of terephthalic acid was dispersed in 30-60ml of DMF with magnetic stirring for 30-60min; the obtained product was washed with a solvent and dried at 40-80°C for 24h to obtain Zr-MOF;
[0040] (2) Synthesis of ZnZr-MOF-LDH by template-directed method:
[0041] Place 0.1-0.3g Zn-MOF and 0.3-0.7g zinc nitrate hexahydrate in 5mL of 1mol / L KOH solution, stir magnetically at 20-80°C for 2-6h; after the reaction, wash with absolute ethanol and place in Vacuum drying at 40-80°C yields ZnZr-MOF-LDH.
Embodiment 1
[0043] (1) Preparation of Zr-MOF:
[0044] 1.4g ZrCl 4 , 0.5 g of terephthalic acid was dispersed in 30 ml of DMF with magnetic stirring for 30 min; the obtained product was washed with a solvent, and dried at 40° C. for 24 h to obtain Zr-MOF.
[0045] (2) Synthesis of ZnZr-MOF-LDH by template-directed method:
[0046] 0.1g of Zn-MOF and 0.3g of zinc nitrate hexahydrate were placed in 5mL of 1mol / L KOH solution, and magnetically stirred at 20°C for 2h; after the reaction, washed with absolute ethanol and vacuum-dried at 40°C to obtain ZnZr -MOF-LDH.
Embodiment 2
[0048] (1) Preparation of Zr-MOF:
[0049] 1.5g ZrCl 4 , 0.5 g of terephthalic acid was dispersed in 30 ml of DMF with magnetic stirring for 40 min; the obtained product was washed with a solvent, and dried at 50° C. for 24 h to obtain Zr-MOF.
[0050] (2) Synthesis of ZnZr-MOF-LDH by template-directed method:
[0051] 0.2g Zn-MOF and 0.5g zinc nitrate hexahydrate were placed in 5mL of 1mol / L KOH solution, and magnetically stirred at 60°C for 3h; after the reaction, washed with absolute ethanol and vacuum-dried at 50°C to obtain ZnZr -MOF-LDH.
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