CN107486171A - 一种二氧化钛与壳聚糖复合材料的制备方法 - Google Patents
一种二氧化钛与壳聚糖复合材料的制备方法 Download PDFInfo
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Abstract
本发明的目的在于提供一种成本低廉、工艺简单、净水效果显著的二氧化钛与壳聚糖复合材料的制备方法。发明制备的二氧化钛与壳聚糖聚合成复合材料,二氧化钛的催化氧化性能优异,能高效处理水中有机化合物和部分无机物,而且具有极强的防污、杀菌和除臭功能,本复合材料节约成本又保护环境,即使回收再利用的吸附效率物也无明显降低。
Description
技术领域
本发明涉及到一种二氧化钛与壳聚糖复合材料的制备方法,属于水污染处理技术领域。
背景技术
壳聚糖及其衍生物都是具有良好的絮凝、澄清作用。作为饮料的澄清剂,可使悬浮物迅速絮凝,自然沉淀,提高原液的得率;在中药提取液中,大分子的蛋白质、鞣酸和果胶,可以用壳聚糖溶液方便地除去,精制出纯度较高的中药有效成份;利用壳聚糖的吸附性,在水质净化方面有良好的效果。
二氧化钛是一种性能优异光催化材料,光催化材料在紫外线照射下可产生游离电子及空穴,可氧化分解有机化合物和部分无机物,而且具有极强的防污、杀菌和除臭功能,用来催化氧化降解挥发性有机化合物的效率高,成本低,环境友好。
因此,可以研究一种二氧化钛与壳聚糖复合制备成的材料,能高效改善水质。
发明内容
本发明的目的在于提供一种成本低廉、工艺简单、净水效果显著的二氧化钛与壳聚糖复合材料的制备方法。
本发明提供一种二氧化钛与壳聚糖复合材料的制备方法,包括如下步骤(1)在搅拌的条件下,将尿素和浓硝酸加水溶解,再加入无水酒精和钛酸丁酯,在反应温度下搅拌反应3h;(2)陈化5h之后,抽滤,洗涤,得到纳米二氧化钛;(3)取壳聚糖加水溶解,向其中加入醋酸,生成胶状液体,在胶状液体中加入戊二醛和纳米二氧化钛,陈化5h;(4)加入氢氧化钠溶液,将pH调至7,抽滤;(5)将滤饼在40℃烘箱内干燥,即得到二氧化钛与壳聚糖复合材料。
本发明的进一步改进,步骤(1)中尿素、浓硝酸与钛酸丁酯的的质量比为5.2:1~2:10。
本发明的进一步改进,步骤(3)中壳聚糖与纳米二氧化钛的质量比为5:8~10。
本发明的进一步改进,步骤(1)中每100g壳聚糖加入4~8ml质量浓度为95%醋酸。
本发明的进一步改进,步骤(1)的温度为60~80℃。
本发明的进一步改进,交联剂为质量浓度50%的戊二醛溶液。
与现有技术相比,本发明的有益效果:
1、本发明的制备方法原料价格低廉,容易得到,工艺简单,能节约生产成本,适合工业废水的净化操作。
2、本发明制备的二氧化钛与壳聚糖聚合成复合材料,二氧化钛的催化氧化性能优异,能高效处理水中有机化合物和部分无机物,而且具有极强的防污、杀菌和除臭功能,本复合材料节约成本又保护环境,即使回收再利用的吸附效率物也无明显降低。
具体实施方式
实施例1:
本发明提供一种二氧化钛与壳聚糖复合材料的制备方法,包括如下步骤(1)在搅拌的条件下,将尿素和浓硝酸加水溶解,再加入无水酒精和钛酸丁酯,在反应温度下搅拌反应3h;(2)陈化5h之后,抽滤,洗涤,得到纳米二氧化钛;(3)取壳聚糖加水溶解,向其中加入醋酸,生成胶状液体,在胶状液体中加入戊二醛和纳米二氧化钛,陈化5h;(4)加入氢氧化钠溶液,将pH调至7,抽滤;(5)将滤饼在40℃烘箱内干燥,即得到二氧化钛与壳聚糖复合材料。
本发明的进一步改进,步骤(1)中尿素、浓硝酸与钛酸丁酯的的质量比为5.2:1:10。
本发明的进一步改进,步骤(3)中壳聚糖与纳米二氧化钛的质量比为5:8。
本发明的进一步改进,步骤(1)中每100g壳聚糖加入4ml质量浓度为95%醋酸。
本发明的进一步改进,步骤(1)的温度为60℃。
本发明的进一步改进,交联剂为质量浓度50%的戊二醛溶液。
实施例2:
本发明提供一种二氧化钛与壳聚糖复合材料的制备方法,包括如下步骤(1)在搅拌的条件下,将尿素和浓硝酸加水溶解,再加入无水酒精和钛酸丁酯,在反应温度下搅拌反应3h;(2)陈化5h之后,抽滤,洗涤,得到纳米二氧化钛;(3)取壳聚糖加水溶解,向其中加入醋酸,生成胶状液体,在胶状液体中加入戊二醛和纳米二氧化钛,陈化5h;(4)加入氢氧化钠溶液,将pH调至7,抽滤;(5)将滤饼在40℃烘箱内干燥,即得到二氧化钛与壳聚糖复合材料。
本发明的进一步改进,步骤(1)中尿素、浓硝酸与钛酸丁酯的的质量比为5.2:2:10。
本发明的进一步改进,步骤(3)中壳聚糖与纳米二氧化钛的质量比为5:10。
本发明的进一步改进,步骤(1)中每100g壳聚糖加入8ml质量浓度为95%醋酸。
本发明的进一步改进,步骤(1)的温度为80℃。
本发明的进一步改进,交联剂为质量浓度50%的戊二醛溶液。
实施例3:
本发明提供一种二氧化钛与壳聚糖复合材料的制备方法,包括如下步骤(1)在搅拌的条件下,将尿素和浓硝酸加水溶解,再加入无水酒精和钛酸丁酯,在反应温度下搅拌反应3h;(2)陈化5h之后,抽滤,洗涤,得到纳米二氧化钛;(3)取壳聚糖加水溶解,向其中加入醋酸,生成胶状液体,在胶状液体中加入戊二醛和纳米二氧化钛,陈化5h;(4)加入氢氧化钠溶液,将pH调至7,抽滤;(5)将滤饼在40℃烘箱内干燥,即得到二氧化钛与壳聚糖复合材料。
本发明的进一步改进,步骤(1)中尿素、浓硝酸与钛酸丁酯的的质量比为5.2:1.5:10。
本发明的进一步改进,步骤(3)中壳聚糖与纳米二氧化钛的质量比为5:9。
本发明的进一步改进,步骤(1)中每100g壳聚糖加入6ml质量浓度为95%醋酸。
本发明的进一步改进,步骤(1)的温度为70℃。
本发明的进一步改进,交联剂为质量浓度50%的戊二醛溶液。
实施例4:
本发明提供一种二氧化钛与壳聚糖复合材料的制备方法,包括如下步骤(1)在搅拌的条件下,将尿素和浓硝酸加水溶解,再加入无水酒精和钛酸丁酯,在反应温度下搅拌反应3h;(2)陈化5h之后,抽滤,洗涤,得到纳米二氧化钛;(3)取壳聚糖加水溶解,向其中加入醋酸,生成胶状液体,在胶状液体中加入戊二醛和纳米二氧化钛,陈化5h;(4)加入氢氧化钠溶液,将pH调至7,抽滤;(7)将滤饼在40℃烘箱内干燥,即得到二氧化钛与壳聚糖复合材料。
本发明的进一步改进,步骤(1)中尿素、浓硝酸与钛酸丁酯的的质量比为5.2:1:10。
本发明的进一步改进,步骤(3)中壳聚糖与纳米二氧化钛的质量比为5:8。
本发明的进一步改进,步骤(1)中每100g壳聚糖加入6ml质量浓度为95%醋酸。
本发明的进一步改进,步骤(1)的温度为80℃。
本发明的进一步改进,交联剂为质量浓度50%的戊二醛溶液。
Claims (6)
1.一种二氧化钛与壳聚糖复合材料的制备方法,其特征在于:包括如下步骤(1)在搅拌的条件下,将尿素和浓硝酸加水溶解,再加入无水酒精和钛酸丁酯,在反应温度下搅拌反应3h;(2)陈化5h之后,抽滤,洗涤,得到纳米二氧化钛;(3)取壳聚糖加水溶解,向其中加入醋酸,生成胶状液体,在胶状液体中加入戊二醛和纳米二氧化钛,陈化5h;(4)加入氢氧化钠溶液,将pH调至7,抽滤;(5)将滤饼在40℃烘箱内干燥,即得到二氧化钛与壳聚糖复合材料。
2.根据权利要求1所述二氧化钛与壳聚糖复合材料的制备方法,其特征在于:所述步骤(1)中尿素、浓硝酸与钛酸丁酯的质量比为5.2:1~2:10。
3.根据权利要求1所述二氧化钛与壳聚糖复合材料的制备方法,其特征在于:所述步骤(3)中壳聚糖与纳米二氧化钛的质量比为5:8~10。
4.根据权利要求1所述二氧化钛与壳聚糖复合材料的制备方法,其特征在于:所述步骤(1)中每100g壳聚糖加入4~8ml质量浓度为95%醋酸。
5.根据权利要求1所述二氧化钛与壳聚糖复合材料的制备方法,其特征在于:所述步骤(1)的温度为60~80℃。
6.根据权利要求1所述二氧化钛与壳聚糖复合材料的制备方法,其特征在于:所述交联剂为质量浓度50%的戊二醛溶液。
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