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Multifunctional photocatalytic performances of recyclable Pd-NiFe2O4/reduced graphene oxide nanocomposites via different co-catalyst strategy

Paper ID Volume ID Publish Year Pages File Format Full-Text
44921 46380 2016 11 PDF Available
Title
Multifunctional photocatalytic performances of recyclable Pd-NiFe2O4/reduced graphene oxide nanocomposites via different co-catalyst strategy
Abstract

•Recyclable Pd-NiFe2O4/rGO photocatalysts have been successfully prepared.•The Pd-NiFe2O4/rGO nanocomposites presented significantly enhanced photocatalytic activity toward dyes degradation.•The Pd-NiFe2O4/rGO nanocomposites successfully used as efficient visible-light catalysts for the photocatalytic Suzuki–Miyaura coupling reactions.•The mechanism for the multifunctional efficient photocatalytic performances was systematically investigated.

In this report, magnetically recyclable, multifunctional Pd-NiFe2O4/reduced graphene oxide (Pd-NiFe2O4/rGO) photocatalysts have been successfully prepared by a one-step green hydrothermal method. The integration of NiFe2O4 with Pd nanoparticles supported on rGO enables efficient harvesting visible light for different catalytic reactions on the heterojunction structures. The Pd-NiFe2O4/rGO nanocomposites present significantly enhanced photocatalytic activity toward dyes degradation compared to the blank-NiFe2O4 and the optimum binary NiFe2O4/rGO, which is ascribed to the added Pd nanoparticles, acting as the mediator on the interfacial layer between NiFe2O4 and rGO, and transferring the charge carrier across the heterojunction interface. Another important role of Pd nanoparticles is as the electron reservoir, which can directly trap photogenerated electrons. It is interesting that the photogenerated electrons, which transfer to Pd nanoparticles, can increase the electron density of Pd. The energetic Pd nanoparticles thus raise their intrinsic catalytic activity, which can promote the Suzuki coupling under visible light irradiation. A possible catalytic mechanism for the multifunctional efficient photocatalytic performances is proposed.

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Keywords
Graphene; Pd; NiFe2O4; Dyes degradation; Photocatalytic Suzuki–Miyaura reaction
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Multifunctional photocatalytic performances of recyclable Pd-NiFe2O4/reduced graphene oxide nanocomposites via different co-catalyst strategy
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 190, 5 August 2016, Pages 1–11
Authors
, , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us