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Issue 7, 2018
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Designed synthesis of organosilica nanoparticles for enzymatic biodiesel production

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Abstract

Porous nanomaterials are of great significance in enzyme immobilization by addressing the intrinsic issues of the native form of enzymes, such as low enzymatic activity and reusability. In this work, we report the successful fabrication of benzene-bridged dendritic mesoporous organosilica nanoparticles (BDMONs) with highly enriched benzene groups in the pore channel wall by a delayed addition method. The developed BDMONs were explored as nano-carriers for lipase immobilization. This platform exhibited a specific activity 6.5 times higher than that of the free enzyme with an excellent reusability, and enhanced thermal and pH stability. It is demonstrated that both the hydrophobic benzene groups and dendritic large-pores are responsible for the superior performance of the immobilized lipase in comparison with dendritic mesoporous silica nanoparticles, ethane-bridged dendritic mesoporous organosilica nanoparticles, and benzene-bridged MONs without large-pores. In particular, the designed nanobiocatalyst functions better than the free enzyme in the transesterification of corn oil to produce biodiesel, showing 93% conversion in the first cycle while retaining 94% of the initial catalytic activity after 5 cycles.

Graphical abstract: Designed synthesis of organosilica nanoparticles for enzymatic biodiesel production

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Supplementary files

Article information


Submitted
21 Feb 2018
Accepted
18 Apr 2018
First published
20 Apr 2018

Mater. Chem. Front., 2018,2, 1334-1342
Article type
Research Article
Author version available

Designed synthesis of organosilica nanoparticles for enzymatic biodiesel production

M. Kalantari, M. Yu, M. Jambhrunkar, Y. Liu, Y. Yang, X. Huang and C. Yu, Mater. Chem. Front., 2018, 2, 1334
DOI: 10.1039/C8QM00078F

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