Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 197-204 |
| Seitenumfang | 8 |
| Fachzeitschrift | Catalysis today |
| Jahrgang | 230 |
| Publikationsstatus | Veröffentlicht - Juli 2014 |
Abstract
The formation of hydrous TiO 2 (or TiO 2 hydrates) by forced hydrolysis is a well-known sol-gel reaction. Self-assembly of nanosized primary TiO 2 hydrates to monodisperse spheres has attracted numerous research interests for various applications. Recently the resultant hydrous TiO 2 spheres (HTSs) have been demonstrated to be a versatile starting material for the facile and controllable synthesis of mesoporous anatase spheres (MASs) with large surface area and well-organized nanocrystallites. This mini review firstly summarizes the chemical pathways to the synthesis of HTSs. Key parameters toward size-controllable synthesis are discussed, and the structural properties of various HTSs are compared. Then the hydro/solvothermal transformation of HTSs to MASs with selective solid or hollow inner structures is described, along with the underlying mechanism. Finally, recent advancements of MASs for environmental photocatalysis and dye-sensitized solar cell applications are briefly highlighted.
ASJC Scopus Sachgebiete
- Chemische Verfahrenstechnik (insg.)
- Katalyse
- Chemie (insg.)
- Allgemeine Chemie
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in: Catalysis today, Jahrgang 230, 07.2014, S. 197-204.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Hydrous TiO2 spheres
T2 - An excellent platform for the rational design of mesoporous anatase spheres for photoelectrochemical applications
AU - Pan, J.H.
AU - Wang, Q.
AU - Bahnemann, D.W.
N1 - Funding information: J.H. Pan is grateful to the Alexander von Humboldt (AvH) Foundation for granting him a research fellowship. Q. Wang acknowledges the financial support from the National Research Foundation Singapore under its Competitive Research Program (CRP Award No. NRF-CRP8-2011-04 ) and NUS-FOE Energy Research for Sustainability Initiatives ( R284000089112 ). We thank Dr. Zhongyu Cai for his valuable discussion on the formation mechanism of colloidal SiO 2 spheres.
PY - 2014/7
Y1 - 2014/7
N2 - The formation of hydrous TiO 2 (or TiO 2 hydrates) by forced hydrolysis is a well-known sol-gel reaction. Self-assembly of nanosized primary TiO 2 hydrates to monodisperse spheres has attracted numerous research interests for various applications. Recently the resultant hydrous TiO 2 spheres (HTSs) have been demonstrated to be a versatile starting material for the facile and controllable synthesis of mesoporous anatase spheres (MASs) with large surface area and well-organized nanocrystallites. This mini review firstly summarizes the chemical pathways to the synthesis of HTSs. Key parameters toward size-controllable synthesis are discussed, and the structural properties of various HTSs are compared. Then the hydro/solvothermal transformation of HTSs to MASs with selective solid or hollow inner structures is described, along with the underlying mechanism. Finally, recent advancements of MASs for environmental photocatalysis and dye-sensitized solar cell applications are briefly highlighted.
AB - The formation of hydrous TiO 2 (or TiO 2 hydrates) by forced hydrolysis is a well-known sol-gel reaction. Self-assembly of nanosized primary TiO 2 hydrates to monodisperse spheres has attracted numerous research interests for various applications. Recently the resultant hydrous TiO 2 spheres (HTSs) have been demonstrated to be a versatile starting material for the facile and controllable synthesis of mesoporous anatase spheres (MASs) with large surface area and well-organized nanocrystallites. This mini review firstly summarizes the chemical pathways to the synthesis of HTSs. Key parameters toward size-controllable synthesis are discussed, and the structural properties of various HTSs are compared. Then the hydro/solvothermal transformation of HTSs to MASs with selective solid or hollow inner structures is described, along with the underlying mechanism. Finally, recent advancements of MASs for environmental photocatalysis and dye-sensitized solar cell applications are briefly highlighted.
KW - Dye-sensitized solar cells
KW - Mesoporous materials
KW - Photocatalysis
KW - Self-assembly
KW - Sol-gel
KW - Titanium dioxide
UR - http://www.scopus.com/inward/record.url?scp=84897581183&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2013.08.007
DO - 10.1016/j.cattod.2013.08.007
M3 - Article
VL - 230
SP - 197
EP - 204
JO - Catalysis today
JF - Catalysis today
SN - 0920-5861
ER -