Document Detail


Facile Preparation of Hierarchical TiO2 Nano Structures; Growth Mechanism and Enhanced Photocatalytic H2 Production from Water Splitting using Methanol as a Sacrificial Reagent.
MedLine Citation:
PMID:  24937083     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Owing to unique features, hierarchical nanostructure of TiO2 has superior photocatalytic activity. In this work a facile hydrothermal route has been explored to prepare 3D hierarchical TiO2 (3D-HTiO2), 1D/3D hybrid hierarchical TiO2 compo-site (HHC) and 3D hierarchical protonated titanate microspheres H2Ti2O5.H2O (3DHPTMS) at the expense of free standing titania nanotube membrane (TiO2-Memb). It proceeded through the formation of peroxotitanium complex, a water soluble Ti-complex as an intermediate. Mechanism of formation, role of membrane crystallinity, as well as reaction parameters giving fine control on tuning morphology and crystal structure have been investigated systematically. Photocatalytic activities were determined by measuring the amount hydrogen generation from water splitting under UV irradiation in presence of methanol as a sacrificial reagent. Self assembled hierarchical titania nanostructures exhibited much superior photocatalytic activity compared to that of starting material i.e TiO2-Memb. Enhanced photocatalytic activity is due to characteristic morphology, increased surface area and enhanced production of photogenerated charge carriers.
Authors:
Zeeshan Haider; Young Soo Kang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-6-17
Journal Detail:
Title:  ACS applied materials & interfaces     Volume:  -     ISSN:  1944-8252     ISO Abbreviation:  ACS Appl Mater Interfaces     Publication Date:  2014 Jun 
Date Detail:
Created Date:  2014-6-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101504991     Medline TA:  ACS Appl Mater Interfaces     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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