20.500.12556/RUL-133741 Spherical polyelectrolyte brushes as templates to prepare hollow silica spheres encapsulating metal nanoparticles Integrating hollow silica spheres with metal nanoparticles to fabricate multifunctional hybrid materials has attracted increasing attention in catalysis, detection, and drug delivery. Here, we report a simple and general method to prepare hollow silica spheres encapsulating silver nanoparticles (Ag@SiO$_2$) based on spherical polyelectrolyte brushes (SPB), which consist of a polystyrene core and densely grafted poly (acrylic acid) (PAA) chains. SPB were firstly used as nanoreactors to generate silver nanoparticles in situ and then used as sacrificial templates to prepare hybrid hollow silica spheres. The resulted Ag@SiO$_2$ composites exhibit high catalytic activity and good reusability for the reduction of 4-nitrophenol to 4-aminophenol by NaBH$_4$. More importantly, this developed approach can be extended to the encapsulation of other metal nanoparticles such as gold nanoparticles into the hollow silica spheres. This work demonstrates that SPB are promising candidates for the preparation of hollow spheres with encapsulated metal nanoparticles and the resulted hybrid spheres show great potential applications in catalysis. spherical polyelectrolyte brush hollow silica silver nanoparticles catalyst true false true Angleški jezik Ni določen Članek v reviji 2021-12-13 13:09:44 2021-12-13 13:09:45 2022-09-13 03:52:27 0000-00-00 00:00:00 2020 0 0 14 str. iss. 4, art. 799 Vol. 10 Apr. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.3:544 2079-4991 10.3390/nano10040799 13011715 RAZ_Yang_Qingsong_2020.pdf RAZ_Yang_Qingsong_2020.pdf 1 0ECE4ADC470F795368B9B9616C39C10E 66515e0440c3acc93ca8a419bc58c0724d171c8b1bf1f23ab3cec235f57cd784 ad3715c1-5c0d-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152061 https://www.mdpi.com/2079-4991/10/4/799 1 718033bf-5c0d-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152059 Zdravstvena fakulteta 0 0 0