Enhanced visible-light photocatalytic performance of a monolithic tungsten oxide/graphene oxide aerogel for nitric oxide oxidation

Yang, Li; Liu, Yang; Zhang, Ruiyang; Li, Wei; Li, Pu; Wang, Xin; Zhou, Ying

doi:10.1016/s1872-2067(17)62974-7

Cited by 30 publications

(11 citation statements)

References 55 publications

(63 reference statements)

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“…For GO, the intense XRD signal at 9.2° was related to the (001) plane. 31 After GO was reduced under solvothermal conditions, the (001) signal in the XRD pattern disappeared and two new broad peaks at 24.7° and 43.1° appeared, suggesting that GO was converted to RGO. 32 Furthermore, the 2%-RGO/C 0.15 ZIS hybrid only presented diffraction peaks belonging to the C 0.15 ZIS component, while RGO was not detected due to its lower content.…”

Section: Resultsmentioning

confidence: 99%

Robust visible-light photocatalytic H₂ evolution on 2D RGO/Cd_0.15Zn_0.85In₂S₄–Ni₂P hierarchitectures

Lin¹,

Sui²,

Wu³

et al. 2022

Catal. Sci. Technol.

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Section: Resultsmentioning

confidence: 99%

Robust visible-light photocatalytic H₂ evolution on 2D RGO/Cd_0.15Zn_0.85In₂S₄–Ni₂P hierarchitectures

Lin¹,

Sui²,

Wu³

et al. 2022

Catal. Sci. Technol.

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“…Compared with the pure WO 3 (G), the C 1s peaks of N-CDs/G-WO 3 -0.6 or N,Fe-CDs/G-WO 3 -0.6 at about 286 eV and 288 eV were assigned to the binding energies of C-N and C=O from the CDs [29,39]. Besides, as shown in Figure 4e, compared to the pure G-WO 3 , the N 1s peaks at around 402 eV and 400 eV were obvious in the N-CDs/G-WO 3 -0.6 and N,Fe-CDs/G-WO 3 -0.6 composites, corresponding to the nitrogen atoms of N-H and C-N bonds, respectively [40]. The differences of C 1s and N 1s between N-CDs/G-WO 3 -0.6 and N,Fe-CDs/G-WO 3 -0.6 were attributed to the coordination of iron ions with the surface groups of N-CDs [26,27].…”

Section: Bet Analysismentioning

confidence: 86%

N,Fe-Doped Carbon Dot Decorated Gear-Shaped WO3 for Highly Efficient UV-Vis-NIR-Driven Photocatalytic Performance

Yan

Wang

et al. 2020

Catalysts

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The development of efficient and non-toxic photocatalysts with a full spectrum response is a primary strategy in the area of photocatalytically mediated pollutant elimination. Herein, we report the preparation of novel nitrogen and iron co-doped carbon dots/gear-shaped WO3 (N,Fe-CDs/G-WO3) with significantly improved broad-spectrum utilization. Characterization results demonstrated that the gear-shaped G-WO3, decorated by N,Fe-CDs with excellent electron transfer/reservoir properties, possessed abundant oxygen vacancies, had large specific surface areas, had multiple light-reflections and had a narrow band gap. As a result, the N,Fe-CDs/G-WO3 composite exhibited excellent photocatalytic activity towards the degradation of water contaminants under full spectrum irradiation. For example, the photodegradative efficiencies of rhodamine B (RhB) reached 81.4%, 97.1%, and 75% in 2 h, under ultraviolet, visible, and near-infrared (UV, vis, and NIR) light irradiation, respectively. Moreover, the N,Fe-CDs/G-WO3 composite also exhibited an outstanding photocatalytic degradation efficiency for other dyes, pharmaceuticals, and personal care products (PPCPs) like methylene blue (MB), ciprofloxacin (CIP), tetracycline hydrochloride (TCH), and oxytetracycline (OTC) (91.1%, 70.5%, 54.5%, and 47.8% in 3 h, respectively). The radical trapping experiments indicated that h+ and ·OH were the main reactive oxidative species (ROS), and the conversion between Fe (III) and Fe (II) played a key role in the photocatalytic reactions. Such a N,Fe-CD decorated material with brilliant photocatalytic activity has tremendous potential for application in environmental remediation.

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“…After decorating with N,Cu-CDs, the new C 1s peaks appearing at 287.65 and 286.22 eV were attributed to the C O, C-O/C-N bands of the CDs, respectively (Peng et al, 2019;. According to the N 1s spectra of the N,Cu-CDs/m-WO 3 -0.8 nanocomposite ( Figure 4E), the peaks at ∼399.66 and 401.66 eV were assigned to C-N and N-H bonds, respectively (Yang et al, 2018). Compared with the N-CD-decorated m-WO 3 , the C 1s and N 1s peaks in the N,Cu-CDs/m-WO 3 -0.8 nanocomposite underwent shifts, which was caused by the chelation between the Cu and N-CDs (Orozco-Guareño et al, 2010).…”

Section: Crystal Structure and Element Analysismentioning

confidence: 96%

N,Cu-CD-Decorated Mesoporous WO3 for Enhanced Photocatalysis Under UV–Vis–NIR Light Irradiation

Yan

Yang

et al. 2021

Front. Mater.

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Research on the design of semiconductor photocatalysts with rapid electron transfer efficiencies and broad-spectrum responses for environmental remediation remains a pressing challenge. Herein, we described the fabrication of a novel broad-spectrum nitrogen and copper codoped carbon dots/mesoporous WO3 nanocomposite (N,Cu-CDs/m-WO3), which exhibited complete UV–vis–NIR spectrum response, light harvesting capabilities, rich oxygen vacancies, rapid electron-transfer ability, low electron–hole (e−/h+) pair recombination rate, and extensive specific surface area. After 2 h of photocatalytic reaction, it showed excellent photoactivities for the degradation of rhodamine B, methylene blue, tetracycline hydrochloride, oxytetracycline, ciprofloxacin, and bisphenol A. Moreover, we found that the conversion between Cu (II) and Cu (I) played a key role in accelerating electron transfer and inhibiting the recombination of e−/h+ pairs. This work provides an efficient strategy for the utilization of solar light and enhancing the charge-transfer capacity in the semiconductor photocatalysis field.

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Enhanced visible-light photocatalytic performance of a monolithic tungsten oxide/graphene oxide aerogel for nitric oxide oxidation

Cited by 30 publications

References 55 publications

Robust visible-light photocatalytic H₂ evolution on 2D RGO/Cd_0.15Zn_0.85In₂S₄–Ni₂P hierarchitectures

Robust visible-light photocatalytic H₂ evolution on 2D RGO/Cd_0.15Zn_0.85In₂S₄–Ni₂P hierarchitectures

N,Fe-Doped Carbon Dot Decorated Gear-Shaped WO3 for Highly Efficient UV-Vis-NIR-Driven Photocatalytic Performance

N,Cu-CD-Decorated Mesoporous WO3 for Enhanced Photocatalysis Under UV–Vis–NIR Light Irradiation

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Enhanced visible-light photocatalytic performance of a monolithic tungsten oxide/graphene oxide aerogel for nitric oxide oxidation

Cited by 30 publications

References 55 publications

Robust visible-light photocatalytic H2 evolution on 2D RGO/Cd0.15Zn0.85In2S4–Ni2P hierarchitectures

Robust visible-light photocatalytic H2 evolution on 2D RGO/Cd0.15Zn0.85In2S4–Ni2P hierarchitectures

N,Fe-Doped Carbon Dot Decorated Gear-Shaped WO3 for Highly Efficient UV-Vis-NIR-Driven Photocatalytic Performance

N,Cu-CD-Decorated Mesoporous WO3 for Enhanced Photocatalysis Under UV–Vis–NIR Light Irradiation

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Robust visible-light photocatalytic H₂ evolution on 2D RGO/Cd_0.15Zn_0.85In₂S₄–Ni₂P hierarchitectures

Robust visible-light photocatalytic H₂ evolution on 2D RGO/Cd_0.15Zn_0.85In₂S₄–Ni₂P hierarchitectures