Synthesis and characterization of visible light responsive N–TiO2 mixed crystal by a modified hydrothermal process

N-doped TiO2 Synthesised via Microwave Induced Photocatalytic on RR4 dye Removal under LED Light Irradiation

“…As can be seen on the figure, the N-doped TiO 2 displays the typical features of urea corresponding to N-H on the peaks of 3150-3600 cm -1 and 1600-1650 (Factorovic et al 2011). The small peak appeared at 1449 cm -1 was detected as -N-O X (Huang et al 2008). No C=O bond was detected in N-doped TiO 2 representing the element in urea.…”

Photocatalytic activity evaluation of TiO2 nanoparticles based on COD analyses for water treatment applications: a standardization attempt

“…In addition, the prepared samples T1, T2, T3 T4, T5 and T6 were synthesized according to the methods given in the mentioned references, respectively (Hafez et al 2009;Papageorgiou et al 1998;Huang et al 2008). Factors such as pH, calcination temperatures, reaction media and various additives have been controlled to obtain different crystalline phases.…”

“…Some of TiO 2 samples under investigation are commercial (TD, AC1, AC2, RC1), while others (T1, T2, T3 T4, T5 and T6) are prepared. Sol-gel, hydrothermal and combustion methods have been utilized in the preparation of TiO 2 nanoparticles (Hafez et al 2009;Papageorgiou et al 1998;Huang et al 2008). Several preliminarily studies preceding the preparation of titanium oxide particles have been conducted in order to obtain pure nanosized TiO 2 representing different crystalline phases.…”

Synthesis and characterization of nitrogen and zirconium ions doped TiO2 films for photocatalytic application

“…1 c). [7][8][9][10][11][12][13][14] The nature of the nitrogen species responsible for the visible-light activity of nitrogen-modified titania is still under debate. The binding energy values for nitrogen and titanium species in the semiconductive matrix are summarized in Table 1.…”

“…Most conclusions are based on the results of the XPS measurement of N1s binding energy values. Values of near 396 eV and higher to 397 eV are as signed to the formation of the bond corresponded to N-Ti-N bonds [7,8] and O-Ti-N [9,10] to N-N, N-O, or N-C groups [9,11], chemisorbed N 2 [12] or NO x (x < 2) and NO 2 groups [13], respectively. In overall, there is no definite opinion in the literature about the crucial points connected with the electronic structure of the doped semiconductor, the synthesis of high photocatalytic active materials under visible light, the chemical state of incorporated nitrogen in the metal oxide structure.…”