Catalytic hydrolysis of cellobiose using different acid-functionalised Fe3O4 magnetic nanoparticles

Autor(es)

Ingle, Avinash P. ^[1] ; Philippini, Rafael R. ^[1] ; Rai, Mahendra ^[2] ; da Silva, Silvio Silverio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Engn Sch Lorena, Dept Biotechnol, Lorena, SP - Brazil

^[2] St Gadge Baba Amravati Univ, Dept Biotechnol, Amravati, Maharashtra - India

• Tipo de documento: Artigo Científico
• Fonte: IET Nanobiotechnology; v. 14, n. 1, p. 40-46, FEB 2020.
• Citações Web of Science: 0

Resumo

The present study demonstrated the preparation of three different acid-functionalised magnetic nanoparticles (MNPs) and evaluation for their catalytic efficacy in hydrolysis of cellobiose. Initially, iron oxide (Fe3O4)MNPs were synthesised, which further modified by applying silica coating (Fe3O4-MNPs@Si) and functionalised with alkylsulfonic acid (Fe3O4-MNPs@Si@AS), butylcarboxylic acid (Fe3O4-MNPs@Si@BCOOH) and sulphonic acid (Fe3O4-MNPs@Si@SO3H) groups. The Fourier transform infrared analysis confirmed the presence of above-mentioned acid functional groups on MNPs. Similarly, X-ray diffraction pattern and energy dispersive X-ray spectroscopy analysis confirmed the crystalline nature and elemental composition of MNPs, respectively. TEM micrographs showed the synthesis of spherical and polydispersed nanoparticles having diameter size in the range of 20-80 nm. Cellobiose hydrolysis was used as a model reaction to evaluate the catalytic efficacy of acid-functionalised nanoparticles. A maximum 74.8% cellobiose conversion was reported in case of Fe3O4-MNPs@Si@SO3H in first cycle of hydrolysis. Moreover, thus used acid-functionalised MNPs were magnetically separated and reused. In second cycle of hydrolysis, Fe3O4-MNPs@Si@SO3H showed 49.8% cellobiose conversion followed by Fe3O4-MNPs@Si@AS (45%) and Fe3O4-MNPs@Si@BCOOH (18.3%). However, similar pattern was reported in case of third cycle of hydrolysis. The proposed approach is considered as rapid and convenient. Moreover, reuse of acid-functionalised MNPs makes the process economically viable. (AU)

• Processo FAPESP: 16/22086-2 - Desenvolvimento de novos métodos nanotecnológicos aplicados ao pré-tratamento de biomassa lignocelulósica
• Beneficiário: Avinash Prabhakarrao Ingle
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/10636-8 - Da fábrica celular à biorrefinaria integrada Biodiesel-Bioetanol: uma abordagem sistêmica aplicada a problemas complexos em micro e macroescalas
• Beneficiário: Roberto de Campos Giordano
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático