CN103503921A - 多聚金属氧酸盐在制备用于杀菌或去除甲醛的消毒剂中的应用 - Google Patents
多聚金属氧酸盐在制备用于杀菌或去除甲醛的消毒剂中的应用 Download PDFInfo
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Abstract
本发明涉及在水中溶解性较好的多聚金属氧酸盐在制备用于杀菌或去除甲醛的消毒剂中的应用,提供了一种使用空气中的氧气为氧化剂,通过催化氧化杀灭微生物、特别适用于空气净化系统的灭菌消毒体系。本发明消毒剂在不断进入空气的条件下,可以长时间使用,不需要抗病毒等药物,也不需要存在安全隐患的过氧化物,没有使用含卤素的刺激性物质,更没有使用存在爆炸危险的酒精等。这种不使用贵金属的消毒剂体系,制备简便,使用成本低,没有二次污染,具有较好应用前景。
Description
(一)技术领域
本发明涉及多聚金属氧酸盐在制备用于杀菌或去除甲醛的消毒剂中的应用,提供了一种使用空气中的氧气为氧化剂,通过催化氧化杀灭微生物、特别适用于空气净化系统的灭菌消毒体系。
(二)背景技术
随着人口密度的不断增加,能源和化工原料的消耗大幅增加,由此导致的环境污染逐步加剧,特别是空气污染,严重影响人类的健康。净化空气成为当前人类最重要的当务之急之一。如何在不产生二次污染、应用成本低廉,实现空气的净化,是科技界研发的重点。
空气净化包括两方面的内容,一是去除空气中各种各样的悬浮颗粒,二是去除空气中对人体有害的气体组分。有害气体包括甲醛、氧化硫、氧化氮、等;悬浮颗粒包括病毒、病菌等微生物。迄今为止,除了我们自己的研发工作,还没有见到任何关于能够同时具备去除甲醛、杀灭病菌病毒的体系的报导。常见的杀灭病菌病毒的手段为,使用抗生素和抗病毒药物,或使用含有卤素的消毒剂(例如次氯酸钠),或者使用过氧化物(如过氧酸、过氧醇、双氧水、等),或者使用小分子的醇(如乙醇、丙醇)、或者使用银离子。这些方法都产生二次污染,并且有些方法还存在较大的爆炸隐患(如过氧化物、小分子醇、等)。而甲醛的去除一般使用吸附剂,通过被动机理从空气中吸附甲醛,主要是活性炭。多种情况下,这两种手段无法合并在一起使用,例如,活性炭如果和过氧化物在一起,活性炭会催化过氧化物的快速降解。
发明人在世界上率先提出的、使用安全无毒的物质为催化剂,通过化学催化活化空气中的氧气、被活化的氧气具备很强的杀灭病菌病毒、同时去除空气中甲醛的全新理念,作用机制如图1所示,为人类的满足净化空气需求提供了一个全新的研发方向。在这个研发理念的指导下,在我们已经成功研发出蒽醌盐体系的消毒体系、和双酚类盐的消毒体系。这两个体系还存在一点不足,这两大类化合物中,有一些化合物,它们在水中的溶解度不足,会造成所需的消毒剂溶液的浓度、低于最优化浓度。
(三)发明内容
本发明目的是提供溶解度较高的多聚金属氧酸盐在制备用于杀菌和去除甲醛的消毒剂中的应用,提供了一种能够在空气净化器中使用的、具备杀灭病毒病菌、和去除甲醛双重功效的消毒剂体系。
本发明采用的技术方案是:
多聚金属氧酸盐(Polyoxometalates)在制备消毒剂中的应用;所述多聚金属氧酸盐的阴离子为[PW12O40]3-或[PV2Mo10O40]5-,阳离子为碱金属离子、碱土金属离子、过渡金属离子或铵离子。所述多聚金属氧酸盐的阳离子优选为下列之一:钾离子、钠离子、铵离子、钙离子、镁离子、铜离子、铁离子。
多聚金属氧酸盐的消毒能力表现在在通氧的条件下,因此,作为消毒剂使用时需要不断通入空气。在正常的空气净化器运行条件下(5分钟以上,室温,大量的空气通过),可以有效的杀灭病菌和病毒,达到消毒目标,并具备较好的从空气中去除甲醛的能力。
具体的,所述消毒剂由所述多聚金属氧酸盐均匀分散在溶剂中制得基础溶液,pH为8~12(低于这个区间,消毒的效果较差;高于这个区间, 会有一定的腐蚀性。),在氧气存在的条件下,实现有效的消毒作用;所述溶剂为水、甘油或其混合物;所述基础溶液中多聚金属氧酸盐质量浓度为0.5%~15%(一般用量不超过10%,最优小于5%,太高会影响使用的成本),该基础溶液可直接作为消毒剂使用,也可再添加一些常见添加剂后作为消毒剂使用,所述添加剂,包括香精、色素等,没有具体限制,只要不对本发明的发明目的产生限制即可。所述消毒剂产品可以做成液体、浆状膏体、固体等形式。
优选的,所述消毒剂pH为9.5~11,溶液中多聚金属氧酸盐质量浓度为1%~5%。
所述消毒剂主要用于添加至空气净化器中(例如将消毒剂溶液置于空气净化器的进气通道中),用于杀菌和去除甲醛。
本发明的有益效果主要体现在:本发明消毒剂在不断进入空气的条件下,可以长时间使用,不需要抗病毒或抗生素等药物,也不需要存在安全隐患的过氧化物,没有使用含卤素的刺激性物质,更没有使用存在爆炸危险的酒精等。这种不使用贵金属的消毒剂体系,制备简便,使用成本低,没有二次污染,具有较好应用前景。
(四)附图说明
图1为利用空气中的氧气杀灭微生物的作用机制。
(五)具体实施方式:
下面结合具体实施例对本发明进行进一步描述,但本发明的保护范围并不仅限于此:
实施例1:催化剂筛选
催化剂筛选使用金黄色葡萄球菌为微生物,胰蛋白酶大豆琼脂为培养基。被筛选的物料粉末以3%重量/体积配比(即3g粉末/100mL水)用纯水制备为均匀的混合物溶液,然后用5mm直径的中性精密过滤滤纸浸泡约10秒后,放置在科比-保尔(Kirby-Bauer)扩散测定皿中。科比-保尔(Kirby-Bauer)扩散测定皿置于密封的玻璃罩内,空气以约每分钟10升的速度供入玻璃罩内。催化剂的杀菌能力,以滤纸周围未长菌的面积直径来衡量。
结果显示,测试了上千种没有强氧化性、非传统氧气活化剂、没有杀菌灭毒能力、在水中溶解度较好的无机盐,只有多聚金属氧酸盐具备达到催化活化氧气、杀灭病毒病菌的能力:对于直接用纯水配制的多聚金属氧酸盐溶液,它们的抑菌圈直径基本上全部大于13mm,而测试的其它盐类,最大的抑菌圈直径都小于5mm。而在不通入空气情况下,多聚金属氧酸盐的杀菌效果较差,抑菌圈直径一般在3~5mm。
实施例2:
多种多聚金属氧酸盐分别配制成质量浓度为3%的水溶液,控制pH=10。杀菌能力仍然使用金黄色葡萄球菌为微生物,科比-保尔(Kirby-Bauer)扩散测定法测定,分别包括不通氧、和通氧两种情况。通氧时,通氧条件保持一致,温度为室温(25℃)和37℃。结果见表1,显示浓度在3%时,室温或稍高温度,杀菌能力没有明显差别,显示这种消毒剂体系稳定。
表1:在不同温度下的杀菌效果
结果显示,多聚金属氧酸盐催化活化氧气达到消毒的能力都很好。
实施例3:
多聚钨酸钾(K3[PW12O40])分别配制成质量浓度为0.5%、1.0%、2.0%、3%、5%、10%、和15%的水溶液,控制pH=10。杀菌能力仍然使用金黄色葡萄球菌为微生物,科比-保尔(Kirby-Bauer)扩散测定法测定,通氧条件保持一致,温度为室温(25℃)和37℃。结果见表2,显示浓度在5%以上,室温或稍高温度,杀菌能力没有明显差别。
表2:在不同浓度和温度下的杀菌效果
实施例4:多聚钨酸盐杀菌能力和pH值之间的关系
多聚钨酸钾(K3[PW12O40])分别配置成浓度为3%,pH值为6、7、8、8.5、9、9.5、10、10.5、11、11.5、12的水溶液。杀菌能力仍然使用金黄色葡萄球菌为微生物,科比-保尔(Kirby-Bauer)扩散测定法测定,通氧条件保持一致,温度为室温(25℃)和37℃。结果见表3,显示浓度为3%时,室温或稍高温度,pH为8以上的杀菌能力较好,pH值在10以上最好。
表3:多聚钨酸钾杀菌效果和酸碱度之间的关系数据表
实施例5:杀毒剂清除甲醛的能力
试验使用密封的不锈钢盒子(0.7m×0.7m×0.7m)作为甲醛的测定空间,脱除甲醛的能力对比活性炭。两个试验的盒子,一个放入500ml的3%的多聚钨酸钾水溶液(pH=10)、另一个放入500克的食品级活性炭,使用甲醛测量仪(PPM Formaldehydemeter400,分辨率为0.01ppm),测定起始浓度为10ppm甲醛空气中甲醛浓度的变化。
表3:空气中甲醛浓度降低数据表
结果显示,本发明中披露的新消毒体系,吸附甲醛的能力优于活性炭,提示本发明消毒剂将在空气净化领域有较好的应用前景。
以上所述仅为本发明的较佳实施例而已,并非用以限定本发明的实质技术内容范围,本发明的实质技术内容是广义地定义于申请的权利要求范围中,任何他人完成的技术实体或方法,若是与申请的权利要求范围所定义的完全相同,也或是一种等效的变更,均将被视为涵盖于该权利要求范围之中。
Claims (7)
1.多聚金属氧酸盐(Polyoxometalates)在制备消毒剂中的应用;所述多聚金属氧酸盐的阴离子为[PW12O40]3-或[PV2Mo10O40]5-,阳离子为碱金属离子、碱土金属离子、过渡金属离子或铵离子。
2.如权利要求1所述的应用,其特征在于所述多聚金属氧酸盐的阳离子为下列之一:钾离子、钠离子、铵离子、钙离子、镁离子、铜离子、铁离子。
3.如权利要求1或2所述的应用,其特征在于所述消毒剂由所述多聚金属氧酸盐均匀分散在溶剂水中制得基础溶液,pH值为8~12,在氧气存在的条件下,实现有效的消毒作用;所述溶剂为水、甘油或其混合物;所述基础溶液中多聚金属氧酸盐质量浓度为0.5%~15%。
4.如权利要求3所述的应用,其特征在于所述基础溶液的pH值为9.5~11,基础溶液中多聚金属氧酸盐质量浓度为1%~5%。
5.如权利要求1或2所述的应用,其特征在于所述消毒剂添加至空气净化器中,用于杀菌或去除甲醛。
6.如权利要求1或2所述的应用,其特征在于所述基础溶液中还含有添加剂。
7.如权利要求1或2所述的应用,其特征在于所述消毒剂制成液体、浆状膏体或固体产品。
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PCT/CN2014/078083 WO2015032217A1 (zh) | 2013-09-07 | 2014-05-22 | 多聚金属氧酸盐在制备杀菌和去除甲醛的消毒剂中的应用 |
DE112014003153.4T DE112014003153T5 (de) | 2013-09-07 | 2014-05-22 | Verwendung von Plyoxometallat zur Vorbereitung eines Desinfektionsmittels für Sterilisation und Entfernung von Formaldehyd |
US14/914,240 US20160213003A1 (en) | 2013-09-07 | 2014-05-22 | Application of polyoxometalate in preparation of disinfectant for sterilizing and removing formaldehyde |
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WO2015032217A1 (zh) * | 2013-09-07 | 2015-03-12 | 宁波市雨辰环保科技有限公司 | 多聚金属氧酸盐在制备杀菌和去除甲醛的消毒剂中的应用 |
CN104437657A (zh) * | 2014-12-24 | 2015-03-25 | 天津工业大学 | 一种用于甲醛气体净化的纤维催化材料及其制备方法 |
CN109772297A (zh) * | 2017-11-15 | 2019-05-21 | 宁波市雨辰环保科技有限公司 | 一种室温下催化活化氧气清除挥发性有机物的催化剂的制备方法及其再生方法与应用 |
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CN112473399A (zh) * | 2020-12-01 | 2021-03-12 | 绍兴市上虞区武汉理工大学高等研究院 | 一种空气净化用多孔复合膜及其制备方法 |
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