Novel synthesis of Ag decorated TiO₂ anchored on zeolites derived from coal fly ash for the photodegradation of bisphenol-A

Abstract

Disposing of coal fly ash threatens the environment hence means to reuse it are highly sought after.

Resin-gel incorporation of high concentrations of W6+ and Zn2+ into TiO2-anatase crystal to form quaternary mixed-metal oxides: effect on the a lattice parameter and photodegradation efficiency

“…9 Another strategy of improving the photocatalytic properties of TiO 2 is by compositing it with other materials like zeolites (molecular sieves), carbon nanomaterials, y ash, stainless steel, glass, silica, polymers, and zeolites among other materials. [10][11][12][13][14][15][16] In instances where TiO 2 is supported on steel and glass, the aim is usually for just immobilizing the TiO 2 nanoparticles to ensure it is easy to separate them from treated water. 10,17,18 On the other hand, materials such as zeolites and carbon nanomaterials (CNMs) (including nitrogen-doped carbon nanotubes (NCNTs)) are used as functional materials; they improve the photocatalytic activity of TiO 2 by trapping the photo-induced electrons thus separating the active charge carriers.…”

“…3,16,[24][25][26][27] Additionally, when noble metals are dispersed on the surface of TiO 2 a plasmonic composite can be formed that allows the material to be able to absorb visible light by surface plasmon resonance (SPR). 3,16,[28][29][30] Other 33,34 Here, the enhanced activity was due to the electron band positions of WO 3 and TiO 2 having been favorably positioned for charge separation. The photoactivity of TiO 2 /WO 3 composites have also been measured under visible radiation, as the bandgap of WO 3 is narrower (2.8 eV), and was shown to be superior to that of individual WO 3 and TiO 2 under visible light.…”

Development and energy evaluation of phase change material composite for building energy‐saving

“…23 Then, the synthesized PCMs mixture could be adsorbed by a carried material to prepare the shaped PCMs for envelopes use. 28,29 Therefore, using FA as a carrier material for energy-saving application of building envelopes is a win-win method. 26 According to the literature, the annual generation of FA has reached up to 580 million tons in China by 2015, while only less than 70% of FA were efficiently utilized, 27 leading to occupancy of land and many environmental problems.…”

“…26 According to the literature, the annual generation of FA has reached up to 580 million tons in China by 2015, while only less than 70% of FA were efficiently utilized, 27 leading to occupancy of land and many environmental problems. 28,29 Therefore, using FA as a carrier material for energy-saving application of building envelopes is a win-win method.…”

Synthesis, Characterization and Photocatalytic Activity of Nanocrystalline First Transition-Metal (Ti, Mn, Co, Ni and Zn) Oxisde Nanofibers by Electrospinning

“…Transition-metal oxide nanoparticles have been a subject of intense research due to unique optical, electrical, catalytic, spin and electronic properties [1][2][3]. It has been widely used in energy, sensor, sterilization and photocatalysis [4][5][6][7], and is an extremely important part of the research of inorganic functional materials. In the study of transition-metal oxide nanomaterials, preparation technology has an important influence on the microstructure and macroscopic properties of nanomaterials.…”