A Rational Self‐Sacrificing Template Route to β‐Bi₂O₃ Nanotube Arrays

Abstract

Arrayed β‐Bi2O3 nanotubes (NTs) were synthesized for the first time through a rational “self‐sacrificing template” route, simply by oxidizing the precursor metallic bismuth NT arrays in air at 200−220 °C for 14−18 h. XRD, TEM, and HRTEM characterizations show that the prepared β‐Bi2O3 samples are all phase pure and the β‐Bi2O3 NTs have uniform diameters of approximately 3−6 nm and lengths up to several micrometers. The optical absorption and photoluminescence (PL) characteristics of the prepared samples were investigated. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)

Electrochemical Deposition of Ni(OH)2 and Fe‐Doped Ni(OH)2 Tubes

“…For example, the template synthesis, [14][15][16] in which a template membrane serves as a scaffold for other materials to be assembled with a morphology similar (or complementary) to that of the template pore, is a simple approach to the preparation of inorganic nanotubes such as Au, [9] Si, [17] MoS 2 , [18] GaN, [19] and Bi 2 O 3 . [20] Nickel hydroxide is the active material in the positive electrodes of alkaline rechargeable batteries such as nickel/ cadmium (Ni/Cd), nickel/iron (Ni/Fe), nickel/metal hydride (Ni/MH), and nickel/zinc (Ni/Zn). [21] The capacities of these batteries are usually limited by the positive electrodes for reasons of proper recombination reactions and battery safety.…”

Enhanced Photocatalytic Performance in Ag+‐Induced BiVO4/β‐Bi2O3Heterojunctions

“…It is generally accepted that this visible-absorption enhancement arises from the surface plasmon band of Ag species. [40,41] Furthermore, the band edges reported for β-Bi 2 O 3 (3.90, [42] 3.4, [43] and 2.54 eV) [36] are usually larger than that of BiVO 4 . Thus, the slight reduction of E g for BiVO 4 /β-Bi 2 O 3 should result from the doped Ag ions entering into the BiVO 4 lattice, not the contribution of the generated β-Bi 2 O 3 .…”

Crystalline bismuth oxide nanorods fabricated on Pt‐coated substrates using a trimethylbismuth and oxygen mixture

“…Motivated by the putative applications, scientists have developed lots of techniques to fabricate some important inorganic materials in the form of 1D nanostructures. With all their scientific and technological importance, some Bi 2 O 3 1D nanostructures, such as Bi 2 O 3 nanotubes, have been reported [13]. In addition, solid Bi 2 O 3 rods with average diameters greater than several hundreds nanometers have been reported [14].…”