期刊
RSC ADVANCES
卷 5, 期 13, 页码 9374-9380出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra15306e
关键词
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资金
- National Natural Science Foundation of China [51133006, 51302246, 51103133]
- Textile Vision Science Education Fund
- 521 Talent Project of ZSTU
- Zhejiang Provincial Natural Science Foundation of China [LY14E030013, LY14E030015]
The rapid diffusional mass transfer process (DMTP) always results in a highly efficient reaction. Herein, cobalt phthalocyanine (CoPc) was covalently anchored on to multiwall carbon nanotubes (MWCNTs) by an easy and moderate one-step deamination method to obtain the catalyst MWCNT-immobilized CoPc (CoPc-MWCNT). The interfacial peroxidase-like catalytic activity of CoPc-MWCNTs is described for controllable H2O2 activation. According to the experimental results and density functional theory calculations, we can be confident that high-valent cobalt-oxo intermediates are formed during the H2O2 activation. Such active species are anchored and exposed on the surface of MWCNTs, shortening the DMTP and enhancing the resistance of CoPc-MWCNTs to oxidative decay. The introduction of linear alkylbenzene sulphonates (LAS) facilitates the catalytic H2O2 activation by CoPc-MWCNTs, and at the same time, CoPc-MWCNTs could maintain a high and sustained catalytic activity because of the specific hydrophobic interactions between the long-chain alkyl group of LAS and the p-conjugated surface of the MWCNTs.
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