Synthesis, characterization and photocatalytic performance of visible light induced bismuth oxide nanoparticle

Wood Protection through Plasma Powder Deposition—An Alternative Coating Process

“…For sufficient UV protection, the layers should provide an absorption range of 340-400 nm [14]. Widely used semiconductors with good photocatalytic properties or UV absorption are ZnO [15], TiO 2 [16] or Bi 2 O 3 [17]. Materials with plasmon absorption are silver, aluminum and gold [18] .…”

Photocatalytic Activity under Simulated Sunlight of Bi-Modified TiO2 Thin Films Obtained by Sol Gel

“…Therefore, the development of visible light-driven coupled photocatalysts is currently of great interest. Particularly, bismuth oxide (α-Bi 2 O 3 ) has been reported as an efficient photocatalyst due to its unique structure and band gap energy close to 2.8 eV which makes it active in the visible region of the electromagnetic spectrum [5,6]. Several studies have reported that the system formed by mixtures of TiO 2 [7,8].…”

Photocatalytic activity of enlarged microrods of α-Bi2O3 produced using ethylenediamine-solvent

“…Most of the semiconductor oxides have a narrow band gap capable to absorb visible light, so they are active to promote photocatalytic reactions, which increase their industrial applications [3]. Among various semiconductor oxides, Bi 2 O 3 polymorphs are inert towards neutral water, environmental friendly and are considered as one of the most efficient materials for energy conversion due to their physicochemical properties, such as high refractive index, high oxygen-ion conductivity due to the high ratio of oxygen vacancies and a deep valence band [4,5]. Among all phases, α-Bi 2 O 3 allows the light absorption in the visible range of the solar spectrum (2.8 eV).…”

“…Therefore, preparing α-Bi 2 O 3 semiconductor with reduced grain size would increase its photocatalytic activity making it a promising photocatalyst in future research. Different nanostructures (nanoparticles, nanorods or nanowires) of α-Bi 2 O 3 have been prepared by different methods like: femtosecond pulsed laser ablation in liquids [7], simple one pot sol-gel method [4], free sonochemical process [8], via a catalysts-driven vapor transport method [9], by using g-C 3 N 4 as a template [10] and so on. Specifically, α-Bi 2 O 3 microrods, sometimes mistakenly called as nanorods, have been obtained by a microwave method [11,12] and by a simple chemical precipitation method using inorganic precipitating agents (NaOH, KOH, NH 4 OH) [13][14][15][16][17][18][19], but in most of these cases, the microrods are thermally treated at temperatures about 450-550°C.…”