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Yang L.,High Level Laboratory of Jiangxi Province for Persistent Pollutants Control | Yang L.,Nanchang Hangkong University | Duan W.,High Level Laboratory of Jiangxi Province for Persistent Pollutants Control | Duan W.,Nanchang Hangkong University | And 6 more authors.
Materials Research Bulletin | Year: 2015

Mesoporous TiO2 with 20 nm particle size was attached onto the surface of Ag3PO4 crystals (200 nm to 400 nm in diameter). The special mesoporous TiO2 shell hindered Ag3PO4 from being dissolved into the solution, which reduced the number of aqua-Ag ions generated from Ag3PO4 crystal, thereby protecting Ag3PO4 from photocorrosion without decreasing its visible-light absorption. TiO2@Ag3PO4 catalyst had high visible-light photocatalytic activity because of the presence of narrow-band-gap Ag3PO4. Compared with pure Ag3PO4, the adsorption capacity of TiO2@Ag3PO4 toward rhodamine B (RhB) increased from 1.1% to 14.8% because of the mesoporous structure of TiO2. The composite TiO2@Ag3PO4 catalyst with molar ratio 0.5:1 exhibited the highest degradation efficiency. About 100 mL of 10 mg/L RhB can be totally degraded within 12 min in presence of 0.05 g of catalyst. © 2015 Elsevier Ltd. All rights reserved. Source


Yang L.,High Level Laboratory of Jiangxi Province for Persistent Pollutants Control | Yang L.,Nanchang Hangkong University | Li Z.,High Level Laboratory of Jiangxi Province for Persistent Pollutants Control | Li Z.,Nanchang Hangkong University | And 10 more authors.
Applied Catalysis B: Environmental | Year: 2016

Mesh of TiO2/graphene/Cu2O was fabricated by chemical vapor deposition of graphene following electrochemical deposition of Cu2O on anodized Ti soft wire bearing TiO2 nanotubes. The mesh of TiO2/graphene/Cu2O was applied in photoelectrocatalytic oxidation of bisphenol A (BPA). The as-prepared TiO2/graphene/Cu2O mesh was used as both catalyst and electrode. Under visible light irradiation, BPA was effectively oxidized through photoelectrocatalysis over the TiO2/graphene/Cu2O mesh. Three main intermediates were evidenced during photoelectrocatalytic degradation of BPA, and no toxic products were determined. A detailed pathway of BPA degradation by TiO2/G/Cu2O is proposed based on the identified intermediates. © 2015 Elsevier B.V.. Source

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