Synthesis and photocatalytic activity of ultrafine Ag3PO4 nanoparticles on oxygen vacated TiO2

Yang, Li; Wang, Peifu; Huang, Cunping; Yao, Weifeng; Wu, Qiang; Xu, Qing

doi:10.1016/j.apcatb.2016.12.059

Cited by 80 publications

(30 citation statements)

References 39 publications

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“…The Ag 3 PO 4 nanoparticles were successfully loading on the surface of nanospikes, which is in accordance with the SEM results. The areas marked by white, dashed circles represent high-resolution TEM (HRTEM) images of U–TiO 2 , and they reveal that the lattice spacings of 0.354 nm and 0.190 nm corresponded to the anatase (101) plane and (200) plane, respectively [ 64 ] ( Fig. 2 (b)).…”

Section: Resultsmentioning

confidence: 99%

Ag3PO4 decorated black urchin-like defective TiO2 for rapid and long-term bacteria-killing under visible light

Liu

Zheng

et al. 2021

Bioactive Materials

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Both phototherapy via photocatalysts and physical puncture by artificial nanostructures are promising substitutes for antibiotics when treating drug-resistant bacterial infectious diseases. However, the photodynamic therapeutic efficacy of photocatalysts is seriously restricted by the rapid recombination of photogenerated electron–hole pairs. Meanwhile, the nanostructures of physical puncture are limited to two-dimensional (2D) platforms, and they cannot be fully used yet. Thus, this research developed a synergistic system of Ag 3 PO 4 nanoparticles (NPs), decorated with black urchin-like defective TiO 2 (BU–TiO 2-X /Ag 3 PO 4 ). These NPs had a decreased bandgap compared to BU-TiO 2-X , and BU-TiO 2-X /Ag 3 PO 4 (3:1) exhibited the lowest bandgap and the highest separation efficiency for photogenerated electron–hole pairs. After combination with BU-TiO 2-X , the photostability of Ag 3 PO 4 improved because the oxygen vacancy of BU-TiO 2-X retards the reduction of Ag + in Ag 3 PO 4 into Ag 0 , thus reducing its toxicity. In addition, the nanospikes on the surface of BU-TiO 2-X can, from all directions, physically puncture bacterial cells, thus assisting the hybrid's photodynamic therapeutic effects, alongside the small amount of Ag + released from Ag 3 PO 4 . This achieves synergy, endowing the hybrid with high antibacterial efficacy of 99.76 ± 0.15% and 99.85 ± 0.09% against Escherichia coli and Staphylococcus aureus , respectively, after light irradiation for 20 min followed by darkness for 12 h. It is anticipated that these findings may bring new insight for developing synergistic treatment strategies against bacterial infectious diseases or pathogenic bacterial polluted environments.

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Section: Resultsmentioning

confidence: 99%

Ag3PO4 decorated black urchin-like defective TiO2 for rapid and long-term bacteria-killing under visible light

Liu

Zheng

et al. 2021

Bioactive Materials

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“…Thus, PS II and PS I should produce the same number of photogenerated charge carriers. Fortunately, this can be achieved by tuning the mass (molar) ratio of PS II and PS I; notably, this ratio will affect the geometric architecture of the PS-PS system [188]. The performance of the photo- Fig.…”

Section: Mass Ratiomentioning

confidence: 99%

“…Time dependence of the induced photoluminescence intensity at 450 nm of the photocatalysts (E) and comparison of the corresponding rate constants (F) [186]. catalyst also depends on the rate of photogenerated-charge separation and the nature of the photocatalytic system [188].…”

Section: Mass Ratiomentioning

confidence: 99%

A review on TiO2-based Z-scheme photocatalysts

Cheng

et al. 2017

Chinese Journal of Catalysis

557

174

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“…4b) is the same as that of anatase TiO 2 in the JCPDS (No. 21-1272) standard spectrum library, 34 and the XRD pattern of HGMs-TiO 2 (Fig. 4c) shows the coexistence of HGMs and anatase TiO 2 diffraction phase, indicating the formation of HGMs-TiO 2 composites.…”

Section: Characterization Of the Compositesmentioning

confidence: 97%

Preparation and visible-light photocatalytic properties of the floating hollow glass microspheres – TiO₂/Ag₃PO₄ composites

Zheng

2019

RSC Adv.

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Synthesis and photocatalytic activity of ultrafine Ag3PO4 nanoparticles on oxygen vacated TiO2

Cited by 80 publications

References 39 publications

Ag3PO4 decorated black urchin-like defective TiO2 for rapid and long-term bacteria-killing under visible light

Ag3PO4 decorated black urchin-like defective TiO2 for rapid and long-term bacteria-killing under visible light

A review on TiO2-based Z-scheme photocatalysts

Preparation and visible-light photocatalytic properties of the floating hollow glass microspheres – TiO₂/Ag₃PO₄ composites

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Synthesis and photocatalytic activity of ultrafine Ag3PO4 nanoparticles on oxygen vacated TiO2

Cited by 80 publications

References 39 publications

Ag3PO4 decorated black urchin-like defective TiO2 for rapid and long-term bacteria-killing under visible light

Ag3PO4 decorated black urchin-like defective TiO2 for rapid and long-term bacteria-killing under visible light

A review on TiO2-based Z-scheme photocatalysts

Preparation and visible-light photocatalytic properties of the floating hollow glass microspheres – TiO2/Ag3PO4 composites

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Product

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Preparation and visible-light photocatalytic properties of the floating hollow glass microspheres – TiO₂/Ag₃PO₄ composites