Facile assembly of Bi2O3/Bi2S3/MoS2 n-p heterojunction with layered n-Bi2O3 and p-MoS2 for enhanced photocatalytic water oxidation and pollutant degradation

Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

“…Theoretically, adequate amounts of p-n heterojunctions between (001) facets of BiOCl and (002) facets of g-C 3 N 4 are formed during the synthetic process, which facilitates electrons from the n-type C 3 N 4 in the heterostructure interfaces transferring to the p-type BiOCl. Actually, the holes are inclined to stay at lower energy states, leading to the fact that the status of positively charged holes in the p-type BiOCl and extra negatively charged electrons in the n-type C 3 N 4 will be achieved [59]. Consequently, an internal electric field is simultaneously formed with a positively charged portion at the interface of p-type BiOCl nanoplates and a negatively charged portion at the interface of n-type g-C 3 N 4 nanosheets, and the direction of the internal electric field is from n-type g-C 3 N 4 to p-type BiOCl.…”

Novel Fe‐W‐Ce Mixed Oxide for the Selective Catalytic Reduction of NOx with NH3 at Low Temperatures

“…Meanwhile, the peaks were not very sharp, which pointed at low crystallinity of the sample [16]. This phenomenon might result from the addition of WO3 to CeO2 as reported in literature, which was regarded to be an indication of strong interactions between the metal oxides [22]. For Fe0.5-W-Ce catalyst, no new peaks appear, but the CeO2 and WO3 peaks became less intense and broader.…”

“…For Fe0.5-W-Ce catalyst, no new peaks appear, but the CeO 2 and WO 3 peaks became less intense and broader. This was reflected by the small crystallite size of the sample, which was usually associated with a high catalytic performance [22]. In addition, two possible explanations were given for the absence of new peaks from Fe compounds in Fe0.5-W-Ce.…”

Synergically Improving Light Harvesting and Charge Transportation of TiO2 Nanobelts by Deposition of MoS2 for Enhanced Photocatalytic Removal of Cr(VI)

“…In Figure 4, it is observed that the obvious peaks at 143, 397, and 515 cm −1 are attributed to the characteristic Eg(1), B1g(1), and A1g + B1g(2) vibration of anatase TiO2, respectively [26]. In the case of MoS2, the peaks at 375 and 405 cm −1 are ascribed to the typical E 1 2g and A1g vibration modes, respectively [31]. It is well-known that the E 1 2g vibration mode associates with in-layer displacements of Mo and S atoms while A1g is related to out of layer symmetric displacements of S atoms along c axis.…”

“…73-1508), whereas the crystallinity of MoS 2 nanotubes is relatively low, resulting in broadened diffraction peaks due to lack of high temperature annealing. As shown in Figure 1, three obvious peaks at 16.4 • , 32.7 • , and 56.9 • are ascribed to the characteristic (002), (100), and (110) facets, respectively [30,31]. After in situ growth of MoS 2 by means of adding TiO 2 as a precursor, the characteristic diffraction peaks of MoS 2 and TiO 2 can be observed in the XRD pattern of the as-obtained composite in Figure 1, which indicates that MoS 2 and TiO 2 exist together in the composite.…”