Mn-N-C Nanoreactor Prepared through Heating Metalloporphyrin Supported in Mesoporous Hollow Silica Spheres.
Mesoporous hollow silica spheres have been drawing tremendous interest due to their special structure and properties and potential applications. Here we synthesized a nanoreactor via ship-in-bottle method, encapsulated with Mn-N-C by heating manganese porphyrin in nanocages of mesoporous hollow silica spheres. And manganese porphyrin is first encapsulated and confined in the hollow spheres. The nanoreactors are investigated through transmission electron microscopy (TEM) and high angle annular dark field scanning TEM (HAADF-STEM) as well as nitrogen adsorption-desorption isotherms. The results demonstrate that the mesoporous hollow spheres with well-defined morphology hold large pore volumes (0.29-0.46 cm3g-1), high specific surface areas (428-600 m2g-1) and uniform pore sizes (4.0 nm). In addition, the ethylbenzene oxidation is conducted in order to explore the catalytic performance of the nanoreactors. And the nanoreactors are observed to possess remarkable catalytic activity and attractive stability for ethylbenzene oxidation, which should be ascribed to the special architectures and confined effect.
State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China.
Xiu
X
Lin
State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China.
Lingling
L
Fu
State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China.
Yuan
Y
Chen
Guangdong Provincial Key Laboratory of Mineral Physics and Material Research & Development, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , Guangzhou 510640, China.
Runliang
R
Zhu
State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China.
Shuangyin
S
Wang
State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China.
Zhigang
Z
Liu
Mn−N-C; confined effect; encapsulation; ethylbenzene oxidation; mesoporous hollow silica spheres; nanoreactors; ship-in-bottle