Details

Autor(en) / Beteiligte

• Fan, Hai
• Zhu, Jianying
• Sun, Jianchao
• Zhang, Shenxiang
• Ai, Shiyun

Titel

Ag/AgBr/Co-Ni-NO sub(3) Layered Double Hydroxide Nanocomposites with Highly Adsorptive and Photocatalytic Properties

Ist Teil von

• Chemistry : a European journal, 2013-02, Vol.19 (7), p.2523-2530

Erscheinungsjahr

2013

Quelle

Wiley Online Library

Beschreibungen/Notizen

• A facile anion-exchange precipitation method was used to synthesize bifunctional Ag/AgBr/Co-Ni-NO sub(3) layered double hydroxide (LDH) nanocomposites by adding AgNO sub(3) solution to a suspension of Co-Ni-Br LDH. The Ag/AgBr nanoparticles were highly dispersed on the sheets of Co-Ni-NO sub(3) LDH. The prepared nanocomposites were used to adsorb and photocatalytically degrade organic pollutants from water. Without light illumination, the nanocomposites quickly adsorbed methyl orange, and the adsorptive capacity, which can reach 230mgg super(-1), is much higher than those of Co-Ni-Br LDH, Ag/AgBr, and activated carbon. The photocatalytic activities of the nanocomposites for the removal of dyes and phenol are higher than those of Co-Ni-Br LDH and Ag/AgBr. The proposed method can be applied to prepare other LDH/silver salt composites. The high absorptive capacity and good photocatalytic activity of such nanostructures could have wide applications in wastewater treatment. Anchored on sheets: Bifunctional Ag/AgBr/Co-Ni-NO sub(3) layered double hydroxide (LDH) nanocomposites with Ag/AgBr nanoparticles highly dispersed on Co-Ni-NO sub(3) LDH sheets were prepared by a facile anion-exchange precipitation method, in which AgNO sub(3) solution was added to a suspension of Co-Ni-Br LDH. They show high adsorption capacity and visible-light-driven photocatalytic activity towards organic pollutants. The figure shows SEM images of Co-Ni-NO sub(3) LDH sheets without (A) and with Ag/AgBr nanoparticles (B).