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Báo cáo hóa học: " Novel Crystalline SiO2 Nanoparticles via Annelids Bioprocessing of Agro-Industrial Wastes"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Novel Crystalline SiO2 Nanoparticles via Annelids Bioprocessing of Agro-Industrial Wastes | Nanoscale Res Lett 2010 5 1408-1417 DOI 10.1007 s11671-010-9654-6 NANO EXPRESS Novel Crystalline SiO2 Nanoparticles via Annelids Bioprocessing of Agro-Industrial Wastes A. Espindola-Gonzalez A. L. Martinez-Hernandez C. Angeles-Chavez V. M. Castano C. Velasco-Santos Received 20 April 2009 Accepted 17 May 2010 Published online 15 June 2010 The Author s 2010. This article is published with open access at Springerlink.com Abstract The synthesis of nanoparticles silica oxide from rice husk sugar cane bagasse and coffee husk by employing vermicompost with annelids Eisenia foetida is reported. The product humus is calcinated and extracted to recover the crystalline nanoparticles. X-ray diffraction XRD transmission electron microscopy TEM high-resolution transmission electron microscopy HRTEM and dynamic light scattering DLS show that the biotransformation allows creating specific crystalline phases since equivalent particles synthesized without biotransformation are bigger and with different crystalline structure. Keywords Silica nanoparticles Worms Agricultural waste Bioprocessing A. Espindola-Gonzalez V. M. Castano Centro de Fisica Aplicada y Tecnologia Avanzada Universidad Nacional Autonoma de Mexico Campus Juriquilla Queretaro Mexico e-mail castano@fata.unam.mx A. Espindola-Gonzalez Facultad de Ingenieria Universidad Nacional Autonoma de Mexico Edificio Bernardo Quintana. Cd. Universitaria Queretaro 04510 Mexico A. L. Martinez-Hernandez C. Velasco-Santos Instituto Tecnologico de Queretaro Av. Tecnologico S N Esq. Gral. Mariano Escobedo Col Centro Historico 76000 Mexico e-mail carlosv@fata.unam.mx C. Angeles-Chaivez Instituto Mexicano del Petroleo Eje Central Lazaro Cardenas Norte 152 San Bartolo Atepehuacan Gustavo A. Madero 07730 Meixico Introduction Agro-industrial wastes have recently attracted a great deal of attention as potential sources of novel green alternatives such as biotransformation for fuels and other materials. Many of these wastes contain amorphous .