Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 26, Issue 40, Pages 7334-7342Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201603315
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [51402012, 51533001, 51521062]
- Fundamental Research Funds for the Central Universities [YS201402, PT1613-03]
- State Key Laboratory of Organic-Inorganic Composites [201404]
Ask authors/readers for more resources
Fast diffusion rate of ions and sufficiently exposed active sites are important for catalysts. As a superior but rarely studied Fenton-type catalyst, unsatisfactory ion diffusion rate of manganese silicate is the exact obstacle for improving its catalytic activity. Here, hierarchical manganese silicate hollow nanotubes (MnSNTs) assembled by tunable secondary structures are precisely fabricated by an efficient hydrothermal method and systematically investigated as Fenton-type catalysts for the first time. The open end and thin mesoporous walls of the hollow nanotubes help shorten the diffusion pathway of ions and enhance the mass transport. Moreover, the numerous standing small nanosheets endow MnSNTs with higher specific surface area and larger pore volume than the large nanosheets and nanoparticles, and thus expose more active sites for adsorption and catalytic decomposition. MnSNTs are highly efficient in adsorption and catalytic decomposition of cationic dyes with an excellent recycling stability. About 98.1% of methylene blue is catalytically decomposed in 45 min at an ambient temperature of 25 degrees C. When the temperature increases to 60 degrees C, only 2 min are required, with a 530% higher kinetic constant than reported.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available