Bidentate-complex-derived TiO2/carbon dot photocatalysts: in situ synthesis, versatile heterostructures, and enhanced H2 evolution

Fabrication of wheat grain textured TiO2/CuO composite nanofibers for enhanced solar H2 generation and degradation performance

“…To determine the photocatalytic activity of these asfabricated NFs, we utilized them for hydrogen production from photocatalytic water splitting [9,41]. In this case, we found that the H 2 evolution rate can be immensely enhanced by introducing copper nanoparticles into the bare TiO 2 NFs and optimizing its performance by tuning the amount of CuO composited.…”

“…Titanium dioxide (TiO 2 ) is a most common photocatalyst candidate applied in H 2 production and degradation of organic pollutants in water because of its stability against photocorrosion, low-cost, and suitable bandgap with appropriate conduction band and valence band alignments [7,8]. However, the wide band gap which leads to its poor light absorption and rapid recombination of electron-hole pairs resulting in low photocatalytic activity has greatly restrict the efficiency of TiO 2 for practical applications [9,10]. Thus, considerable efforts have been made to improve TiO 2 light harvesting and facilitate the electron-hole pair separation [11][12], which involve, for instance, doping with noble metals [13][14], combining with semiconductor quantum dots (QDs) [15,16] and carbon dots (CDs) [9,17], or sensitizing with organic dyes [18].…”

“…However, the wide band gap which leads to its poor light absorption and rapid recombination of electron-hole pairs resulting in low photocatalytic activity has greatly restrict the efficiency of TiO 2 for practical applications [9,10]. Thus, considerable efforts have been made to improve TiO 2 light harvesting and facilitate the electron-hole pair separation [11][12], which involve, for instance, doping with noble metals [13][14], combining with semiconductor quantum dots (QDs) [15,16] and carbon dots (CDs) [9,17], or sensitizing with organic dyes [18]. It is also known that CuO is a superior co-catalyst suitably incorporated with TiO 2 to enhance the photocatalytic efficiency owing to its broader solar absorption range [10,19].…”

Annealing-free synthesis of carbonaceous Nb2O5 microspheres by flame thermal method and enhanced photocatalytic activity for hydrogen evolution

“…The strongest peak at 284.6 eV was assigned to surface adventitious carbon, which resulted from insufficient burning or hydrolysis of organic compounds and the contamination from air [41]. And the other two weak peaks at 286.5 eV and 288.3 eV were identified to carbonate with oxygen bond species (C-O, C¼O, O¼C-O) [42,43]. For the O1s region shown in Fig.…”

Nature‐Inspired Design of Artificial Solar‐to‐Fuel Conversion Systems based on Copper Phosphate Microflowers

“…[11] The hydrogen generation rates of the nanocomposites were 180 mmol g À1 h À1 for TCP-1, 330 mmol g À1 h À1 for TCP-2 (increased by 4.1 times), and 120 mmol g À1 h À1 for TCP-3 (Figure 4 a), with an apparent quantum efficiency of 1 %. The photocatalytic processes of these nanocomposites are stable, as indicated by the continuous and steady production of hydrogen from the best-performing sample, TCP-2, over many cycles.…”