[1]汤琼芳,伍书翰,李诗茵,等.负载纳米银改性聚氨酯海绵的制备及其消毒效能[J].中国给水排水,2025,41(13):71-78.
TANGQiong-fang,WUShu-han,LIShi-yin,et al.Preparation of Nanosilver-loaded Modified Polyurethane Sponge and Its Application in Water Disinfection[J].China Water & Wastewater,2025,41(13):71-78.
点击复制
TANGQiong-fang,WUShu-han,LIShi-yin,et al.Preparation of Nanosilver-loaded Modified Polyurethane Sponge and Its Application in Water Disinfection[J].China Water & Wastewater,2025,41(13):71-78.
负载纳米银改性聚氨酯海绵的制备及其消毒效能
中国给水排水[ISSN:1000-4062/CN:12-1073/TU]
卷:
第41卷
期数:
2025年第13期
页码:
71-78
栏目:
出版日期:
2025-07-01
- Title:
- Preparation of Nanosilver-loaded Modified Polyurethane Sponge and Its Application in Water Disinfection
- Keywords:
- polyurethane sponge; chitosan; polyethylene polyamine; nanosilver; disinfection
- 摘要:
- 开发一种能够实现安全高效的使用点（POU）水消毒的可持续和环境友好的纳米银复合材料仍然是一个挑战。提出一种简单易行的方法并成功制备了均匀负载银纳米粒子（AgNPs）的多乙烯多胺接枝壳聚糖/聚氨酯复合海绵材料（CS-g-PEPA/PUF@Ag），对其理化性质进行表征，并考察了对大肠杆菌（E. coli）的抑菌/杀菌效果以及用于实际天然水体消毒的可行性。结果表明，在PUF表面形成CS-g-PEPA水凝胶不仅可以使改性海绵负载更多的AgNPs（20.1 mg/g），而且可以有效控制银的缓慢释放（在水中浸泡24 h后银释放率低于0.07%）。CS-g-PEPA/PUF@Ag表现出高效的杀菌活性，在与菌液接触20 min内能达到100%灭菌，这可能是由于其亲水性提高，能够较快地吸收被微生物污染的水并使菌种与AgNPs接触，提高杀菌效率。此外，CS-g-PEPA/PUF@Ag还具有良好的重复杀菌性能，并能对实际天然水体进行有效消毒。
- Abstract:
- The development of a sustainable and environmentally friendly silver nanocomposite material capable of achieving safe and efficient point-of-use (POU) water disinfection remains a challenge. In this paper, a simple and easy method was proposed to successfully prepare polyethylene polyamine grafted chitosan/polyurethane composite sponges (CS-g-PEPA/PUF@Ag) uniformly loaded with silver nanoparticles (AgNPs). The physicochemical properties of CS-g-PEPA/PUF@Ag were characterized and their bacteriostatic/bactericidal effects against E. coli as well as the feasibility of their application for disinfection of real natural water bodies were investigated. The results showed that the introduction of CS-g-PEPA hydrogel on the surface of PUF not only enabled the modified sponge to be loaded with more AgNPs (20.1 mg/g), but also effectively controlled the slow release of silver (the rate of silver release was limited to less than 0.07% after immersion in water for 24 h). CS-g-PEPA/PUF@Ag exhibited highly efficient bactericidal activity, which could reach 100% killing of bacteria within 20 min of contact with the bacterial solution. This may be due to the increased hydrophilicity of CS-g-PEPA/PUF@Ag, which was able to absorb microbially contaminated water faster and bring the bacterial strains therein into contact with the AgNPs to improve the disinfection efficiency. In addition, CS-g-PEPA/PUF@Ag has commendable repeatable disinfection efficacy and can effectively disinfect actual natural water.
相似文献/References:
[1]王雪健,王艳,吉世明,等.改性沸石固定微藻用于鱼塘养殖尾水脱氮[J].中国给水排水,2025,41(7):95.
WANGXue-jian,WANGYan,JIShi-ming,et al.Modified Zeolite-immobilized Microalgae for Nitrogen Removal from Fishpond Wastewater[J].China Water & Wastewater,2025,41(13):95.
更新日期/Last Update:
2025-07-01