Facile synthesis of flower-like hierarchical N-doped Nb₂O₅/C nanostructures with efficient photocatalytic activity under visible light

Abstract

Flower-like hierarchical N-doped Nb2O5/C nanostructures with efficient visible light-driven photocatalytic activity synthesized via a facile hexamethylenetetramine-assisted hydrothermal route.

Construction of 3D flowers-like O-doped g-C3N4-[N-doped Nb2O5/C] heterostructure with direct S-scheme charge transport and highly improved visible-light-driven photocatalytic efficiency

“…As illustrated in Fig. 4(a), the typical absorption borders of OCN and pure CN are around 520 and 470 nm, respectively, whereas pure Nb2O5 only exhibits UV light absorption properties, as previously reported [19]. Remarkably, all the OCN-[N-NBO/C] samples, including the 1OCN-[N-NBO/C], which contain a low amount of OCN, display enhanced light absorption performances than Pure Nb2O5.…”

“…The nanostructured flower-like hierarchical N-NBO/C was fabricated through a mild hydrothermal route similar to that reported in our previous work [19]. Initially, 2 mmol of C10H5NbO20•xH2O was dissolved in a solution containing 15 mL DW and 10 mL of ethanol and named solution A.…”

“…As can be detected, the XRD pattern of N-NBO/C displayed four peaks centered at 22.9°, 26.6°, 46.6°, and 55.4° matching to the (001), (100), (002), and (102) planes, respectively, which can be assigned to pseudo-hexagonal Nb2O5 [JCPDS no. 18-0911] [19,20]. On the other hand, the XRD patterns of OCN show two diffraction peaks at 13.2° (100) and 27.5° (002), which can be attributed to the graphite-like carbon nitride phase [JCPDS no.…”

Growth Mechanism of Spiky Nb2O5 Nanoparticles and their Electrochemical Property

“…Furthermore, it is reported that hydrothermal treatment of niobium oxide produces a variety of crystal structures. [19][20][21] Therefore, the niobium oxides and their hydrates with a lower oxidation number were formed in a primal synthesis step. A weak peak at 22.6°was attributed to (001) peak estimated from lattice parameters of Nb 2 O 5 (a ¼ 6.209, b ¼ 28.999, c ¼ 3.923, Pbam, CCDC#2 103 847).…”

Review on 3D Fabrication at Nanoscale

“…17), and 3D flower-like hierarchical nitrogen-doped and carbonsensitized Nb 2 O 5 (N-NBO/C) nanostructures have been fabricated for solar energy transformation and environmental remediation (Fig. 18) [84,85]. Despite this, the structural control over a larger scale range, mechanical properties of the selfassembly materials, the combination of different molecules into advances have been achieved, as it is still in the early stages, several important issues, such as limited resolution, low throughput, high cost, limited flexibility in material choice, and 3D structure shape, still remain.…”