Synthesis and photocatalytic behaviors of Cr2O3–CNT/TiO2 composite materials under visible light

A Comparison on Physical, Structural, and Photocatalytical Properties of TiO2 Nanopowders Produced Using Sol‐Gel and Flame Spray Pyrolysis

“…Major absorption peak values and calculated degradation efficiency values were listed in Table II. When compared with the prior studies, 2,16 obtained degradation rates in this study were found to be approximately 99% for 60 min using pure TiO 2 , while this value is about 96% with H 2 O 2 (oxidizing agent) addition for 160 min. 2 In addition, it is possible to employ two or more semiconducting oxides synergistically.…”

“…The degradation was determined as, calculating with [( A 0 − A )/ A 0 ], where A 0 and A were the absorbance of the primal and remaining MB, respectively, similar to the study of Ref. .…”

“…In addition, it is possible to employ two or more semiconducting oxides synergistically. Depending on their obtained results, best performance was recorded as 70% for 120 min …”

“…Depending on their obtained results, best performance was recorded as 70% for 120 min. 16 If efficiency of degradation in flame spray pyrolysis is compared with results in sol-gel, it can be seen clearly that particle size and phase type are in a competition. As a result, most effective anatase-structured sol-gel powders and relatively low anatase-structured but small-sized flame spray pyrolysis powders were successfully degraded MB solutions.…”

Modification of TiO2 nanorods by Bi2MoO6 nanoparticles for high performance visible-light photocatalysis

“…With the matching band potentials, the photogenerated electrons or holes will then be transferred to TiO 2 , which leads to efficient charge separation and enhances photocatalytic ability. Recently, some novel photocatalysts based on semiconductor composites, for example, coupling TiO 2 with CdS [17], Cr 2 O 3 -CNT [18] and SnO 2 [19] have been developed, which are not only visible light active but also with improved quantum efficiency. Modification of TiO 2 by other narrow band gap semiconductors could be an effective way to extend the photoabsorption range and facilitate the separation of the photoinduced carriers [8].…”