Polypropylene membrane surface modification by RAFT grafting polymerization and TiO2 photocatalysts immobilization for phenol decomposition in a photocatalytic membrane reactor

Autor:	Jia-Shan Gu, Hai-Yin Yu, Shi-Feng Li, Jin Zhou, Liang Wang, Xiu-Min Wu, Song Yang
Rok vydání:	2011
Předmět:	Materials science Membrane reactor Filtration and Separation Chain transfer Grafting Analytical Chemistry chemistry.chemical_compound Membrane Chemical engineering Polymerization chemistry Polymer chemistry Photocatalysis Surface modification Acrylic acid
Zdroj:	Separation and Purification Technology. 83:157-165
ISSN:	1383-5866
DOI:	10.1016/j.seppur.2011.09.030
Popis:	The main technical barriers that impede photocatalytic membrane reactor (PMR) commercialization remain on the post-recovery of the catalyst particles after water treatment. To overcome this problem, surface modification of polypropylene macroporous membrane was performed with the technique of photoinduced reversible addition-fragmentation chain transfer grafting polymerization of acrylic acid. Titanium oxide photocatalysts were introduced to the acrylic acid grafted membrane surface. Phenol decomposition was carried out under UV irradiation in a recycle batch photocatalytic membrane reactor. The normalized membrane flux reached 1.7 times that of the unmodified membrane for the PAAc modified membrane. Introducing TiO 2 photocatalysts to the membrane surface reduced the normalized membrane flux slightly. For the PMR with a grafting degree of 12.9% (wt) of PAAc on the membrane surface, the corresponding decomposition percentage was 32.5% after 6 h UV light irradiation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7b393f825be9e0cc0908b87b37edc4e4 https://doi.org/10.1016/j.seppur.2011.09.030 Zobrazit plný text záznamu Full Text from ScienceDirect