Nickel-foam-supported β-Ni(OH) as a green anodic catalyst for energy efficient electrooxidative degradation of azo-dye wastewater.

Electrochemical oxidative degradation (EOD) is a particularly promising technique for removing organic pollutants from wastewater. However, due to the high overpotential of EOD in conventional anode materials, the energy cost of EOD is usually very high, which greatly promotes the search for highly active, stable, and energy-efficient anodic catalysts. Herein, we demonstrated that nickel-foam-supported (NF-supported) β-Ni(OH) (NF/β-Ni(OH)) prepared a facile hydrothermal method could be used as an energy efficient anode for EOD.

AgBi(WO4)2 : A New Modification Material to Bi2 WO6 for Enhanced and Stable Visible-Light Photocatalyic Performance.

In this work, we report a novel AgBi(WO4 )2 -Bi2 WO6 heterostructure, which was designed and synthesized by using a simple hydrothermal method. Methyl orange was used as a representative dye indicator to evaluate the visible-light catalytic activity and the catalytic mechanism was investigated. The as-synthesized AgBi(WO4 )2 -Bi2 WO6 composite displayed a 43 times higher photocatalytic activity than Bi2 WO6 .

A new p-metal-n structure AgBr-Ag-BiOBr with superior visible-light-responsive catalytic performance.

A novel visible-light-driven AgBr-Ag-BiOBr photocatalyst was synthesized by a facile hydrothermal method. Taking advantage of both p-n heterojunctions and localized surface plasmon resonance, the p-metal-n structure exhibited a superior performance concerning degradation of methyl orange under visible-light irradiation (λ>420 nm). A possible photodegradation mechanism in the presence of AgBr-Ag-BiOBr composites was proposed, and the radical species involved in the degradation reaction were investigated.