TY - JOUR
T1 - Synthesis of cation-intercalated titanate nanobelts
AU - Miao, Lei
AU - Tanemura, Sakae
AU - Huang, Rong
AU - Liu, Chengyan
AU - Huang, Chun Ming
AU - Xu, Gang
PY - 2011
Y1 - 2011
N2 - Monovalent, bivalent and trivalent cations of Li +, Sn 2+, Al 3+, Fe 3+ with different values of electronegativity were designed as doped-ions to prepare cations-intercalated titanate nanobelts through ex-situ ion-exchange reaction. XRD results revealed that the d 200 values of layered TNBs decreased as the following sequence: Li-intercalated TNBs > Al-intercalated TNBs > Fe-intercalated TNBs > Sn-intercalated TNBs. The electronegativity differences between respective doped-cations and oxygen can well explain the trend of the reduction of d 200 values for the synthesized layered nanobelts with different cations. The width change of nanobelts depending on intercalated cations showed similar tendency as that of d 200 excluding Sn-intercalated case. That is mostly due to the crystallization of SnO 2 nanoparticles on the nanobelts. Sn 2+ is easily crystallized to form SnO 2 nanoparticles on the surface of TNBs and being considered as unfavorable metal dopant for the present intercalation purpose. The reduction of d 200 values of the doped TNBs from that of the undoped TNBs confirms the intercalation of the doped cations into layered structure. Such simple electronegativitydifference depending mechanism may be convenient for the designing of metal ion intercalation into octahedral TiO 6 layered-oxide materials.
AB - Monovalent, bivalent and trivalent cations of Li +, Sn 2+, Al 3+, Fe 3+ with different values of electronegativity were designed as doped-ions to prepare cations-intercalated titanate nanobelts through ex-situ ion-exchange reaction. XRD results revealed that the d 200 values of layered TNBs decreased as the following sequence: Li-intercalated TNBs > Al-intercalated TNBs > Fe-intercalated TNBs > Sn-intercalated TNBs. The electronegativity differences between respective doped-cations and oxygen can well explain the trend of the reduction of d 200 values for the synthesized layered nanobelts with different cations. The width change of nanobelts depending on intercalated cations showed similar tendency as that of d 200 excluding Sn-intercalated case. That is mostly due to the crystallization of SnO 2 nanoparticles on the nanobelts. Sn 2+ is easily crystallized to form SnO 2 nanoparticles on the surface of TNBs and being considered as unfavorable metal dopant for the present intercalation purpose. The reduction of d 200 values of the doped TNBs from that of the undoped TNBs confirms the intercalation of the doped cations into layered structure. Such simple electronegativitydifference depending mechanism may be convenient for the designing of metal ion intercalation into octahedral TiO 6 layered-oxide materials.
KW - Cation-Intercalated
KW - Electronegativity Differences
KW - Titanate Layered Structures
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U2 - 10.1166/jnn.2011.4318
DO - 10.1166/jnn.2011.4318
M3 - Article
C2 - 22400335
AN - SCOPUS:84863139243
VL - 11
SP - 9267
EP - 9273
JO - Journal of Nanoscience and Nanotechnology
JF - Journal of Nanoscience and Nanotechnology
SN - 1533-4880
IS - 10
ER -