2020
DOI: 10.1088/1361-6528/ab7041
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Boosted visible-light photocatalytic activity and retarded carrier recombination of Eu3+-doped Nb3O7F nanomaterials prepared by hydrothermal method

Abstract: Novel trivalent europium (Eu3+)-doped niobium oxyfluoride (Nb3O7F) nanomaterials with retarded carrier recombination and enhanced photocatalytic activity were successfully synthesized by a facile hydrothermal method. Through changing the doping ratio of Eu3+ ions, the phase, composition, morphology, absorption spectra and photocatalytic properties were investigated in detail. The results showed that Eu3+ ions were successfully incorporated into the interstitial sites of Nb3O7F crystal lattice. With the increas… Show more

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Cited by 6 publications
(7 citation statements)
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“…The index n is determined to be 1/2 for NOF and CN owing to their indirect band gap semiconductors. 23,31 Accordingly, the corresponding E g values of NOF, CN, and NOF/CN-0.1 are determined to be 3.16, 2.61, and 2.64 eV, respectively (Figure 6b). Namely, NOF does not contribute to the light absorption and the narrowed band gap of CN.…”
Section: Resultsmentioning
confidence: 96%
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“…The index n is determined to be 1/2 for NOF and CN owing to their indirect band gap semiconductors. 23,31 Accordingly, the corresponding E g values of NOF, CN, and NOF/CN-0.1 are determined to be 3.16, 2.61, and 2.64 eV, respectively (Figure 6b). Namely, NOF does not contribute to the light absorption and the narrowed band gap of CN.…”
Section: Resultsmentioning
confidence: 96%
“…74-2363). 23 The XRD pattern of pure CN has two peaks at 13.1 and 27.4°, which can be indexed to (100) and (002) planes, respectively. 24 Accordingly, the diffraction peaks of the NOF/ CN-x composites are consistent with the XRD patterns of the single component, indicating the coexistence of NOF and CN in composites.…”
Section: Resultsmentioning
confidence: 99%
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“…NNO/NOF heterostructures were synthesized as follows. First, NOF nanosheets were synthesized using a hydrothermal method as described in our previous report [19] . Then, the as‐prepared NOF (0.1 g) was added into NaOH solution (80 mL, 0.5 m ) and stirred magnetically for 1 h. Afterwards, the suspension was transferred into a 100 mL teflon‐lined autoclave, sealed, maintained in an electric oven at 180 °C for 2 h, and then allowed to cool naturally to room temperature.…”
Section: Methodsmentioning
confidence: 99%
“…Nb 3 O 7 F (denoted as NOF) with the ReO 3 structure has been reported extensively as an active photocatalyst for hydrogen production, organic degradation, and solar conversion by virtue of its excellent optoelectronic property, low carrier recombination, and good thermal stability [16–18] . However, the unsatisfactory photocatalytic performance severely limits its application, owing to the slow charge transport and low carrier separation efficiency [19] . The coupling of NOF with other semiconductors or carbon materials to form heterojunctions has been confirmed recently to be a viable strategy to ameliorate the carrier transport and separation [20, 21] .…”
Section: Introductionmentioning
confidence: 99%