Fabrication of mesh-like bismuth oxide single crystalline nanoflakes and their visible light photocatalytic activity

Synthesis, characterization and photocatalytic activity of α-Bi2O3 nanoparticles

“…Recently, Chen et al prepared mesh-like bismuth oxide single crystalline nanoflakes (monoclinic ␣-Bi 2 O 3 and tetragonal ␤-Bi 2 O 3 ) via a bismuth oxalate precursor and tested the photocatalytic activity of these nanoflakes using the photodegradation of rhodamine B under visible light irradiation. The study showed that the photocatalytic activity of bismuth oxide was related to its crystalline phase and morphology [13]. Other studies have shown that bismuth oxide films annealed at 550 • C (containing a higher proportion of the tetragonal phase) have high photocatalytic activity in the photodegradation of rhodamine B [4].…”

Facile synthesis of rod-like Bi 2 O 3 nanoparticles as an electrode material for pseudocapacitors

“…To date, many Bi 2 O 3 micro-and nanostructures have been successfully synthesized, including nanofibers [15], nanobelts [16], nanowires [17], nanoflakes [18], microrods [19], particles(plates, block) [20] and thin films [21]. Generally, Bi 2 O 3 has five main polymorphic forms, known as, α-Bi 2 O 3 (monoclinic), β-Bi 2 O 3 (tetragonal),γ-Bi 2 O 3 (BCC),δ-Bi 2 O 3 (cubic) and ω-Bi 2 O 3 (triclinic).…”

Synthesis and visible-light photocatalytic activity of NdVO4 nanowires

“…However, TiO 2 shows photocatalytic activities only in the UV region and can harvest a small fraction (<5%) of the solar irradiation due to its relatively large band-gap (about 3.2 eV) [2][3][4]. Therefore, development of visible light active photocatalysts to efficiently utilize solar energy is both an important and challenging research field [5][6][7]. The visible light photocatalytic activity of TiO 2 nanotubes [2], nanoparticles [3,8] and hollow spheres [4] have all been enhanced by doping with Nd, owing to the increased visible light absorption from the narrowed band-gap.…”