Fabrication of Ag₃PO₄–AgBr–PTh composite loaded on Na₂SiO₃ with enhanced visible-light photocatalytic activity

Abstract

A novel Ag₃PO₄–AgBr–PTh composite loaded on Na₂SiO₃ was synthesized for enhanced visible-light photocatalytic activity. The photocatalytic activity of the samples was evaluated by photodegrading rhodamine B (RhB) under visible light irradiation. The main reactive species and possible photocatalytic mechanism were also discussed. As a result, the Ag₃PO₄–AgBr–PTh composite loaded on Na₂SiO₃ exhibited enhanced photocatalytic activity for RhB compared with Ag₃PO₄ under visible-light irradiation. Additionally, it was demonstrated that the hole (h⁺) and superoxide radical (•O₂⁻) were the major reactive species involving in the RhB degradation. PTh played vital role for the enhanced photocatalytic activity of Ag₃PO₄–AgBr–PTh–Na₂SiO₃ composite, which offered an electron transfer expressway and accelerated the transfer of the electrons from the CB of AgBr into Ag₃PO₄. This work could provide a new perspective for the synthesis of Ag₃PO₄-based composites and the improvement of photocatalytic activity of Ag₃PO₄.

Keywords

Ag₃PO₄–AgBr–PTh–Na₂SiO₃ composite / PTh / photocatalytic activity / visible light

References

[1] Yi Z, Ye J, Kikugawa N, . An orthophosphate semiconductor with photooxidation properties under visible-light irradiation. Nature Materials, 2010, 9(7): 559–564

[2] Tang C, Liu E, Wan J, . Co₃O₄ nanoparticles decorated Ag₃PO₄ tetrapods as an efficient visible-light-driven heterojunction photocatalyst. Applied Catalysis B: Environmental, 2016, 181: 707–715

[3] Xu Y S, Zhang W D. Monodispersed Ag₃PO₄ nanocrystals loaded on the surface of spherical Bi₂MoO₆ with enhanced photocatalytic performance. Dalton Transactions, 2013, 42(4): 1094–1101

[4] Yao W, Zhang B, Huang C, . Synthesis and characterization of high efficiency and stable Ag₃PO₄/TiO₂ visible light photocatalyst for the degradation of methylene blue and rhodamine B solutions. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2012, 22: 4050–4055

[5] Bi Y, Ouyang S, Cao J, . Facile synthesis of rhombic dodecahedral AgX/Ag₃PO₄ (X= Cl, Br, I) heterocrystals with enhanced photocatalytic properties and stabilities. Physical Chemistry Chemical Physics, 2011, 13(21): 10071–10075

[6] Dong P, Wang Y, Cao B, . Ag₃PO₄/reduced graphite oxide sheets nanocomposites with highly enhanced visible light photocatalytic activity and stability. Applied Catalysis B: Environmental, 2013, 132‒133(9): 45–53

[7] Xu H, Wang C, Song Y, . CNT/Ag₃PO₄ composites with highly enhanced visible light photocatalytic activity and stability. Chemical Engineering Journal, 2014, 241: 35–42

[8] Yu H, Yu Y, Liu J, . Space-confined growth of Ag₃PO₄ nanoparticles within WS₂ sheets: Ag₃PO₄/WS₂ composites as visible-light-driven photocatalysts for decomposing dyes. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2015, 3(38): 19439–19444

[9] Patil S S, Tamboli M S, Deonikar V G, . Magnetically separable Ag₃PO₄/NiFe₂O₄ composites with enhanced photocatalytic activity. Dalton Transactions, 2015, 44(47): 20426–20434

[10] Guan X, Guo L. Cocatalytic effect of SrTiO₃ on Ag₃PO₄ toward enhanced photocatalytic water oxidation. ACS Catalysis, 2014, 4(9): 3020–3026

[11] Chen Z, Bing F, Liu Q, . Novel Z-scheme visible-light-driven Ag₃PO₄/Ag/SiC photocatalysts with enhanced photocatalytic activity. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2015, 3(8): 4652–4658

[12] Yang X, Qin J, Jiang Y, . Fabrication of P25/Ag₃PO₄/graphene oxide heterostructures for enhanced solar photocatalytic degradation of organic pollutants and bacteria. Applied Catalysis B: Environmental, 2015, 166‒167: 231–240

[13] Yang X, Qin J, Jiang Y, . Bifunctional TiO₂/Ag₃PO₄/graphene composites with superior visible light photocatalytic performance and synergistic inactivation of bacteria. RSC Advances, 2014, 4(36): 18627–18636

[14] Kumar S, Surendar T, Baruah A, . Synthesis of a novel and stable g-C₃N₄‒Ag₃PO₄ hybrid nanocomposite photocatalyst and study of the photocatalytic activity under visible light irradiation. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2013, 1(17): 5333–5340

[15] Yang X, Chen Z, Xu J, . Tuning the morphology of g-C₃N₄ for improvement of Z-scheme photocatalytic water oxidation. ACS Applied Materials & Interfaces, 2015, 7(28): 15285–15293

[16] Yang X, Tang H, Xu J, . Silver phosphate/graphitic carbon nitride as an efficient photocatalytic tandem system for oxygen evolution. ChemSusChem, 2015, 8(8): 1350–1358

[17] Bu Y, Chen Z. Role of polyaniline on the photocatalytic degradation and stability performance of the polyaniline/silver/silver phosphate composite under visible light. ACS Applied Materials & Interfaces, 2014, 6(20): 17589–17598

[18] Liang H, Li X. Visible-induced photocatalytic reactivity of polymer-sensitized titania nanotube films. Applied Catalysis B: Environmental, 2009, 86(1‒2): 8–17

[19] Wang Y, Chu W, Wang S, . Simple synthesis and photoelectrochemical characterizations of polythiophene/Pd/TiO₂ composite microspheres. ACS Applied Materials & Interfaces, 2014, 6(22): 20197–20204

[20] Lv M, Yang H, Xu Y, . Improving the visible light photocatalytic activities of Bi₂₅FeO₄₀/MIL-101/PTH via polythiophene wrapping. Journal of Environmental Chemical Engineering, 2015, 3(2): 1003–1008

[21] Zhang F, Shi Y, Zhao Z, . Influence of semiconductor/insulator/ semiconductor structure on the photo-catalytic activity of Fe₃O₄/SiO₂/polythiophene core/shell submicron composite. Applied Catalysis B: Environmental, 2014, 150: 472–478

[22] Yang Z, Huang G, Huang W, . Novel Ag₃PO₄/CeO₂ composite with high efficiency and stability for photocatalytic applications. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2014, 2(6): 1750–1756

[23] Zhu Y, Xu S, Jiang L, . Synthesis and characterization of polythiophene/titanium dioxide composites. Reactive & Functional Polymers, 2008, 68(10): 1492–1498

[24] Ma J, Liu Q, Zhu L, . Visible light photocatalytic activity enhancement of Ag₃PO₄ dispersed on exfoliated bentonite for degradation of rhodamine B. Applied Catalysis B: Environmental, 2016, 182: 26–32

[25] Dong P, Wang Y, Li H, . Shape-controllable synthesis and morphology-dependent photocatalytic properties of Ag₃PO₄ crystals. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2013, 1(15): 4651–4656

[26] Liu L, Qi Y, Lu J, . A stable Ag₃PO₄@g-C₃N₄ hybrid core@shell composite with enhanced visible light photocatalytic degradation. Applied Catalysis B: Environmental, 2016, 183: 133–141

[27] Yu X, Liu S, Yu J. Superparamagnetic γ-Fe₂O₃@SiO₂@TiO₂ composite microspheres with superior photocatalytic properties. Applied Catalysis B: Environmental, 2011, 104(1‒2): 12–20

[28] Wang L, Chai Y, Ren J, . Ag₃PO₄ nanoparticles loaded on 3D flower-like spherical MoS₂: a highly efficient hierarchical heterojunction photocatalyst. Dalton Transactions, 2015, 44(33): 14625–14634

[29] Cao J, Luo B, Lin H, . Visible light photocatalytic activity enhancement and mechanism of AgBr/Ag₃PO₄ hybrids for degradation of methyl orange. Journal of Hazardous Materials, 2012, 217‒218: 107–115

[30] Yan T, Guan W, Li W, . Ag₃PO₄ photocatalysts loaded on uniform SiO₂ supports for efficient degradation of methyl orange under visible light irradiation. RSC Advances, 2014, 4(70): 37095–37099

[31] Zheng B, Wang X, Liu C, . High-efficiently visible light- responsive photocatalysts: Ag₃PO₄ tetrahedral microcrystals with exposed {111} facets of high surface energy. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2013, 1(40): 12635–12640

[32] Yang X, Cui H, Li Y, . Fabrication of Ag₃PO₄‒graphene composites with highly efficient and stable visible light photocatalytic performance. ACS Catalysis, 2013, 3(3): 363–369

[33] Wang W S, Du H, Wang R X, . Heterostructured Ag₃PO₄/AgBr/Ag plasmonic photocatalyst with enhanced photocatalytic activity and stability under visible light. Nanoscale, 2013, 5(8): 3315–3321

[34] Xiang Q, Lang D, Shen T, . Graphene-modified nanosized Ag₃PO₄ photocatalysts for enhanced visible-light photocatalytic activity and stability. Applied Catalysis B: Environmental, 2015, 162: 196–203

[35] Chandra M R, Rao T S, Pammi S V N, . An enhanced visible light active rutile titania-copper/polythiophene nanohybrid material for the degradation of rhodamine B dye. Materials Science in Semiconductor Processing, 2015, 30: 672–681

Acknowledgement

This work was supported by the open topics of State Key Laboratory of Pollution Control and Resource Research (PCRRF14006).

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