Journal ArticleDOI
Hierarchical assembly of graphene-bridged Ag3PO4/Ag/BiVO4 (040) Z-scheme photocatalyst: An efficient, sustainable and heterogeneous catalyst with enhanced visible-light photoactivity towards tetracycline degradation under visible light irradiation
Fei Chen,Qi Yang,Xiaoming Li,Guangming Zeng,Dongbo Wang,Cheng-Gang Niu,Jianwei Zhao,Hongxue An,Ting Xie,Yaocheng Deng +9 more
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In this paper, a novel graphene-bridged Ag3PO4/Ag/BiVO4 (040) Z-scheme heterojunction with excellent visible-light-driven photocatalytic performance was fabricated using a facile in situ deposition method followed by photo-reduction.Abstract:
A novel graphene-bridged Ag3PO4/Ag/BiVO4 (040) Z-scheme heterojunction with excellent visible-light-driven photocatalytic performance was fabricated using a facile in situ deposition method followed by photo-reduction. The as-obtained nanocomposite was employed to degrade tetracycline (TC) in water under visible light irradiation. Compared to pure BiVO4, Ag3PO4 and other nanocomposites, Ag/Ag3PO4/BiVO4/RGO displayed more superior photodegradation efficiency with 94.96% removal of TC (10 mg/L) in 60 min, where the optimal conditions was catalysis dosage 0.50 g/L and initial pH at ca. 6.75. The influences of TC concentrations, light irradiation condition, coexistence ions and water sources were also investigated in details. The enhanced photocatalytic activities could be attributed to the suppression of charge recombination, high specific surface area and desirable absorption capability of Ag/Ag3PO4/BiVO4/RGO, which were in sequence confirmed by PL, PC, EIS, BET and DRS tests. The synergistic effects of RGO and Ag/Ag3PO4 in the hybrid could also contribute to the improved photo-stability and recyclability towards TC decomposition. In addition, radical trapping experiments and ESR measurement revealed that the photo-induced active species superoxide radical ( O2−) and holes (h+) were the predominant active species in the photocatalytic system. The Ag/Ag3PO4/BiVO4/RGO nanocomposite also possessed desirable photocatalytic performance on the degradation of TC from real wastewater, further verifying its potential in practical industries. This work provides a promising approach to construct visible-light response and more stabilized nanocomposite photocatalysts applied in efficient treatment of persistent pollutants in wastewater.read more
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Simultaneous removal of Cr(VI) and phenol contaminants using Z-scheme bismuth oxyiodide/reduced graphene oxide/bismuth sulfide system under visible-light irradiation.
TL;DR: This work provided a promising method of simultaneously removing heavy metals and organic pollutants by using a Z-scheme system with enhanced photocatalytic activity.
Journal ArticleDOI
AgCl/Ag3PO4: A stable Ag-Based nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of parabens.
TL;DR: The obtained results confirmed that the AgCl/Ag3PO4 composite exhibited significantly higher photocatalytic performance and improved stability compared with bare Ag3 PO4, which could be mainly attributed to highly efficient charge separation through a synergistic effect of AgCl, Ag3PO 4, and in situ photo-reduced Ag nanoparticles.
Journal ArticleDOI
Fabrication of BiVO4/RGO/Ag3PO4 ternary composite photocatalysts with enhanced photocatalytic performance
Yang Li,Xinyan Xiao,Zhihao Ye +2 more
TL;DR: In this paper, a novel BiVO4/RGO/Ag3PO4 ternary composite photocatalyst was fabricated through a two-step method of solvothermal assisted in situ ion sequential deposition method.
Journal ArticleDOI
Deposition-precipitation preparation of Ag/Ag3PO4/WO3 nanocomposites for efficient Visible-light degradation of rhodamine B under strongly acidic/alkaline conditions
TL;DR: This work expects that this work will provide systematic study concerning Z-scheme Ag/Ag3PO4/WO3 structure, and fulfill the research about photodegrade activity of catalyst under strongly acidic/alkaline conditions.
Journal ArticleDOI
Facet-dependent and interfacial plane-related photocatalytic behaviors of semiconductor nanocrystals and heterostructures
Michael H. Huang,Mahesh Madasu +1 more
TL;DR: In this paper, the effect of facet-dependent electronic and photocatalytic properties on polyhedral semiconductor nanocrystals and semiconductor wafers is investigated. And the results show that polyhedral nanostructures exhibit variable band structures, giving rise to tunable degrees of valence and conduction band bending and difficulty to charge carrier migration across these surfaces.
References
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Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000: a national reconnaissance.
Dana W. Kolpin,Edward T. Furlong,Michael T. Meyer,E. Michael Thurman,Steven D. Zaugg,Larry B. Barber,Herbert T. Buxton +6 more
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Occurrence of antibiotics and antibiotic resistance genes in hospital and urban wastewaters and their impact on the receiving river.
Sara Rodríguez-Mozaz,Sara Chamorro,Elisabet Marti,Belinda Huerta,Meritxell Gros,Alexandre Sànchez-Melsió,Carles M. Borrego,Damià Barceló,José Luis Balcázar +8 more
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New application of Z-scheme Ag3PO4/g-C3N4 composite in converting CO2 to fuel.
TL;DR: The work found a new application of the photocatalyst, Ag3PO4/g-C3N4, in simultaneous environmental protection and energy production.
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