Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 3, Issue 9, Pages 3272-3275Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am200908t
Keywords
mesoporous silica; silica nanotube; template synthesis; cellulose; sol-gel
Funding
- National Key Project on Basic Research of China [2009CB930104]
- Zhejiang Provincial Natural Science Foundation of China [R2080061]
- Chinese Universities Scientific Fund [2010QNA3009]
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Bioinspired synthesis of hierarchical mesoporous silica nanotubes by using natural cellulose substance (filter paper) and cetyltrirnethylammonium bromide (CTAB) micelles as dual templates was achieved. CTAB micelles were adsorbed onto the surfaces of ultrathin titania film precoated cellulose nanofibers, followed by hydrolysis and condensation of tetraethyl orthosilicate around these micelles to form silica. After calcination and sulfuric acid treatment to remove the organic templates and the thin titania film, bulk white sheets composed of natural hierarchical silica nanotubes with mesopores in the walls were obtained, to which silver nanoparticles were further induced to give a silica-nanotube/metal-nanoparticle hybrid.
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