Fe Co1−-doped titanium oxide nanotubes as effective photocatalysts for hydrogen extraction from ammonium phosphate

Acceleration of ammonium phosphate hydrolysis using TiO2 microspheres as a catalyst for hydrogen production

“…Ostwald ripening is also assumed to be the signicant mechanism that aids the hollowing of the microspheres. 15,47 The XRD patterns of all of the prepared samples with the addition of different concentrations of urea (u_0, u_5, u_10, u_20) are shown in Fig. 6.…”

“…The method of thermal extraction is not widely used because the total amount of hydrogen released is very small, so hydrolysis via catalysis is the most favorable way to extract hydrogen from ammonium phosphate. [13][14][15] On the other hand, titanium dioxide (titania) is widely used as an effective photocatalyst due to its good photocatalytic and optical properties. 13,16 Despite the wide band gap range of the different phases of titania, its efficiency is still limited because of the fast recombination and poor absorption of visible light (solar radiation contains 55.4% visible radiation).…”

Tuning the band gap of M-doped titanate nanotubes (M = Fe, Co, Ni, and Cu): an experimental and theoretical study

“…14,18 In this regard, the inuence of different metal cations on the Ti-NT optical properties has been studied previously. 9,[19][20][21][22] Lee and Zaki studied the inuence of cations with different valences (Mg 2+ , Ca 2+ , Zn 2+ , K + , Cr 3+ , Ce 3+ , Ce 4+ , Mo 5+ , and La 3+ ). These results showed that the semiconductor band gaps could be modied in the range of 2.02-2.8 eV.…”

Secondary particle size determining sedimentation and adsorption kinetics of titanate-based materials for ammonia nitrogen and methylene blue removal

“…After 24 h, the white suspension was recovered by centrifugation. The solid sample was washed with ethanol five times and dried at 60˚C for 12 h [27]. The as-prepared white samples were labelled as ST (1:1), ST(1:10) and ST(1:20) according to the TIPT: H2O molar ratio.…”