Biosynthesis of amorphous mesoporous aluminophosphates using yeast cells as templates

Journal Article · Fri Feb 15 00:00:00 EST 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.11.016· OSTI ID:22215847

González, Gema ^[1]; Tovar, Leidy M.; Méndez, Franklin J. ^[2]; Gomes, Maria E. ^[1]; Cañizales, Edgar ^[3]; Niño-Vega, Gustavo; Villalobos, Hector ^[4]; Brito, Joaquin L. ^[2]

---

1. Centro de Ingeniería de Materiales y Nanotecnología, Instituto Venezolano de Investigaciones Científicas, Apartado 20632, Caracas 1020-A (Venezuela, Bolivarian Republic of)
2. Centro de Química, Instituto Venezolano de Investigaciones Científicas, Apartado 20632, Caracas 1020-A (Venezuela, Bolivarian Republic of)
3. Área de Análisis Químico Inorgánico, PDVSA, INTEVEP, Los Teques 1070-A (Venezuela, Bolivarian Republic of)
4. Centro de Microbiología y Biología Celular, Instituto Venezolano de Investigaciones Científicas, Apartado 20632, Caracas 1020-A (Venezuela, Bolivarian Republic of)

Graphical abstract: Display Omitted Highlights: ► Amorphous aluminophosphates can take place using yeast as template. ► A mesoporous material was obtained. ► The specific surface area after calcinations ranged between 176 and 214 m{sup 2} g{sup −1}. -- Abstract: In this study aluminophosphates have been synthesized from aluminum isopropoxide and phosphoric acid solutions using yeast cells as template. The physicochemical characterization was carried out by thermogravimetric analysis; X-ray diffraction; Fourier transform infrared; N{sub 2} adsorption–desorption isotherms; scanning electron microscopy; transmission electron microscopy and potentiometric titration with N-butylamine for determination of: thermal stability; crystalline structure; textural properties; morphology and surface acidity, respectively. The calcined powders consisted of an intimate mixture of amorphous and crystallized AlPO particles with sizes between 23 and 30 nm. The average pore size observed is 13–16 nm and the specific surface area after calcinations (at 650 °C) ranged between 176 and 214 m{sup 2} g{sup −1}.

• OSTI ID: 22215847
• Journal Information: Materials Research Bulletin, Vol. 48, Issue 2; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BIOSYNTHESIS
CALCINATION
FOURIER TRANSFORMATION
NANOSTRUCTURES
PHOSPHORIC ACID
POTENTIOMETRY
POWDERS
SCANNING ELECTRON MICROSCOPY
SPECIFIC SURFACE AREA
SURFACE PROPERTIES
SURFACES
THERMAL GRAVIMETRIC ANALYSIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
YEASTS