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Institucional

Habibi, Youssef

Valdebenito, Fabiola#Garcia, Rafael#Cruces, Karen#Ciudad, Gustavo#Chinga-Carrasco, Gary

CO2 Adsorption of Surface-Modified Cellulose Nanofibril Films Derived from Agricultural Wastes

AMER CHEMICAL SOC

ACS SUSTAINABLE CHEMISTRY & ENGINEERING

en

The present work demonstrates a simple and straightforward chemical modification of cellulose nanofibril (CNF) films in order to produce CO2 adsorbent materials. The CNF films were obtained from two agricultural residues, i.e. corn husks and oat hulls. CNF from kraft pulp was used for comparison purposes. Controlled surface silylation was conducted on the preformed CNF films in aqueous media under mild conditions using three aminosilanes bearing mono, di, and triamine groups. The success of the grafting of the aminosilanes on the CNF films was demonstrated by Fourier transform infrared and X-ray photoelectron spectroscopy analyses. The results of the contact angle measurements and field emission scanning electron microscopy coupled with energy dispersive spectroscopy showed homogeneous coverage by the amino groups on the surface of the modified CNF films, particularly with the diaminosilane N-[3-(trimethoxysilyl)propyl]thylenediamine (DAMO). The produced films were thermally stable, and when subjected to 99.9% CO2 flow at 25 degrees C, these modified films showed good adsorption of CO2. Indeed, after 3 h of exposure the adsorbed concentration of CO2 of the CNF films modified with DAMO was 0.90, 1.27, and 2.11 mmol CO2 g(-1) polymer for CNF films from corn husks, oat hulls, and kraft pulp, respectively.

Artículo original

The authors are thankful to the center of waste management and bioenergy (BIOREN) and Sciences of Natural Resources Doctorate Program of Universidad de la Frontera, Chile, for financial support under the frame of Elac 2015/T03-0715 Project, ValBio-3D-Valorization of Residual Biomass for Advanced 3D Material. The Research Council of Norway (grant no. 271054) is acknowledged for funding part of this work.

Los autores agradecen al Centro de Gestión de Residuos y Bioenergía (BIOREN) y al Programa de Doctorado en Ciencias de los Recursos Naturales de la Universidad de la Frontera, Chile, por el apoyo financiero brindado en el marco del Proyecto Elac 2015/T03-0715, ValBio-3D - Valorización de Biomasa Residual para Material 3D Avanzado. Se agradece al Consejo de Investigación de Noruega (subvención n.° 271054) por financiar parte de este trabajo.

10.1021/acssuschemeng.8b00771

pdf

Cellulose nanofibrils# Functionalization# CO2 adsorbent material

http://dx.doi.org/10.1021/acssuschemeng.8b00771

Chemistry, Multidisciplinary# Green & Sustainable Science & Technology# Engineering, Chemical

Nanofibrillas de celulosa# Funcionalización# material adsorbente de CO2

Ingeniería de los Materiales

Química Analítica

Otras Ingenierías y Tecnologías

version publicada

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metadata

metadata

WOS:000446413100007

CO₂ Adsorption of Surface-Modified Cellulose Nanofibril Films Derived from Agricultural Wastes

Artículo original

AMER CHEMICAL SOC

ACS SUSTAINABLE CHEMISTRY & ENGINEERING

Química Multidisciplinaria# Ciencia y tecnología verdes y sostenibles# Ingeniería, Química

2168-0485

en

UFRO BIOREN Elac 2015/T03-0715#Research Council of Norway 271054

The authors are thankful to the center of waste management and bioenergy (BIOREN) and Sciences of Natural Resources Doctorate Program of Universidad de la Frontera, Chile, for financial support under the frame of Elac 2015/T03-0715 Project, ValBio-3D-Valorization of Residual Biomass for Advanced 3D Material. The Research Council of Norway (grant no. 271054) is acknowledged for funding part of this work.

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