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Metal Nanoparticles as Heterogeneous Fenton Catalysts
Author(s) -
Dhakshinamoorthy Amarajothi,
Navalon Sergio,
Alvaro Mercedes,
Garcia Hermenegildo
Publication year - 2012
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201100517
Subject(s) - hydrogen peroxide , catalysis , leaching (pedology) , reusability , heterogeneous catalysis , chemistry , nanoparticle , aqueous solution , metal , fenton reaction , radical , chemical engineering , inorganic chemistry , materials science , nanotechnology , organic chemistry , environmental science , software , computer science , soil science , engineering , soil water , programming language
The Fenton reaction (the generation of hydroxyl radicals from hydrogen peroxide) is the most useful method for degradation of organic pollutants in aqueous solution at moderate concentrations. In this Review we summarize the use of metal nanoparticles, either unsupported or deposited on large‐surface‐area solids, as Fenton catalysts. The Review complements two other reviews in the field of heterogeneous Fenton catalysis using aluminosilicates and carbonaceous materials. Herein, particular emphasis is given to the reaction conditions in which these catalysts are used, highlighting the operating mechanism and the relative efficiency of the materials. Aspects such as leaching of the metal to the solution, reusability, and the concentration of hydrogen peroxide used are analyzed in detail. Besides a critical description of the present status of the field, future trends and the need to establishing valid comparisons to assess the relative efficiencies of the materials are commented on.