Unknown

Dataset Information

0

Galvanic replacement synthesis of Ag x Au1-x @CeO2 (0 ≤ x ≤ 1) core@shell nanospheres with greatly enhanced catalytic performance.


ABSTRACT: A galvanic replacement strategy has been successfully adopted to design Ag x Au1-x @CeO2 core@shell nanospheres derived from Ag@CeO2 ones. After etching using HAuCl4, the Ag core was in situ replaced with Ag x Au1-x alloy nanoframes, and void spaces were left under the CeO2 shell. Among the as-prepared Ag x Au1-x @CeO2 catalysts, Ag0.64Au0.36@CeO2 shows the optimal catalytic performance, whose catalytic efficiency reaches even 2.5 times higher than our previously reported Pt@CeO2 nanospheres in the catalytic reduction of 4-nitrophenol (4-NP) by ammonia borane (AB). Besides, Ag0.64Au0.36@CeO2 also exhibits a much lower 100% conversion temperature of 120 °C for catalytic CO oxidation compared with the other samples.

SUBMITTER: Liu D 

PROVIDER: S-EPMC5532536 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature

altmetric image

Publications

Galvanic replacement synthesis of Ag <sub><i>x</i></sub> Au<sub>1-<i>x</i></sub> @CeO<sub>2</sub> (0 ≤ <i>x</i> ≤ 1) core@shell nanospheres with greatly enhanced catalytic performance.

Liu Dapeng D   Li Wang W   Feng Xilan X   Zhang Yu Y  

Chemical science 20150907 12


A galvanic replacement strategy has been successfully adopted to design Ag <sub><i>x</i></sub> Au<sub>1-<i>x</i></sub> @CeO<sub>2</sub> core@shell nanospheres derived from Ag@CeO<sub>2</sub> ones. After etching using HAuCl<sub>4</sub>, the Ag core was <i>in situ</i> replaced with Ag <sub><i>x</i></sub> Au<sub>1-<i>x</i></sub> alloy nanoframes, and void spaces were left under the CeO<sub>2</sub> shell. Among the as-prepared Ag <sub><i>x</i></sub> Au<sub>1-<i>x</i></sub> @CeO<sub>2</sub> catalysts  ...[more]

Similar Datasets

| S-EPMC9418773 | biostudies-literature
| S-EPMC5965059 | biostudies-literature
| S-EPMC9775458 | biostudies-literature
| S-EPMC10957853 | biostudies-literature
| S-EPMC6488626 | biostudies-literature
| S-EPMC8103172 | biostudies-literature
| S-EPMC9565892 | biostudies-literature
| S-EPMC9569599 | biostudies-literature
| S-EPMC9075781 | biostudies-literature
| S-EPMC9823101 | biostudies-literature