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Layered Double Hydroxide-Supported Carbon Dots as an Efficient Heterogeneous Fenton-Like Catalyst for Generation of Hydroxyl Radicals
journal contribution
posted on 2014-05-15, 00:00 authored by Manlin Zhang, Qingfeng Yao, Weijiang Guan, Chao Lu, Jin-Ming LinThe development of a new heterogeneous
Fenton-like catalyst is
highly desired. Herein, we reported a simple and efficient method
for the preparation of colloidal nanocomposites consisting of carbon
dots and dodecylbenzenesulfonate (DBS)-layered double hydroxides (LDHs).
The resulting nanocatalyst can function as an effective heterogeneous
Fenton-like catalyst for the decomposition of acidified H2O2 to generate abundant hydroxyl radicals (·OH).
With the aid of chemiluminescence (CL) technique, electron spin resonance
(ESR) measurements and ion chromatography (IC) separation technique,
we demonstrated that the unique structural configuration of the carbon
dot-DBS-LDH nanocomposites was responsible for the highly efficient
catalytic activities toward H2O2 decomposition.
The fabricated material introduced a novel family of Fenton-like nanocatalysts
with environmental friendliness, cost effectivity, and superior efficiency
for the decomposition of H2O2 to ·OH radicals. Such heterogeneous
Fenton-like
catalyst could realize the degradation of DBS without any external
energy input, showing a promising application for the oxidative degradation
of organic contaminants in wastewater treatment applications.