Porous silica nano-tube as host for enzyme immobilization--颗粒学报PARTICUOLOGY

Ding, H., Wen, L., & Chen, J. (2004). Porous silica nano-tube as host for enzyme immobilization. China Particuology, 2(6), 270-273. https://doi.org/10.1016/S1672-2515(07)60073-6

Porous silica nano-tube as host for enzyme immobilization

Haomin Ding, Lixiong Wen, Jianfeng Chen ^*

Key Lab for Nanomaterials, Ministry of Education; Research Center of the Ministry of Education for High Gravity Engineering & Technology, Beijing University of Chemical Technology, Beijing 100029, P. R. China

10.1016/S1672-2515(07)60073-6

Volume 2, Issue 6, December 2004, Pages 270-273

Received 21 September 2004, Accepted 11 November 2004, Available online 27 November 2007.

E-mail: chenjf@mail.buct.edu.cn

Highlights

Abstract

With their hollow morphology and large openings, the as-synthesized porous silica nano-tubes (NTPS), prepared through a sol-gel routine by using nano-sized needle-shaped CaCO₃ particles as templates, were used as host for enzyme immobilization. Bioimmobilization study showed that enzyme molecules could not only be adsorbed on the external surface of NTPS but also entrapped in their inner hollow cores, leading to higher enzyme loading capacities of NTPS (more than 350 mg/g silica) in a shorter time, as compared to common porous silica (less than 50 mg/g) and most conventional mesoporous silica materials (less than 100 mg/g).

Graphical abstract

Keywords

porous silica nano-tube; nanosized CaCO₃; lysozyme; enzyme immobilization

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