Title: Novel nano-structured materials: synthesis and application

Authors: Vu Anh Tuan, Tran Manh Cuong, Dang Tuyet Phuong, Tran Thi Kim Hoa, Bui Thi Hai Linh, Nguyen Dinh Tuyen, Nguyen Quoc Tuan

Addresses: Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi City, Vietnam. ' Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi City, Vietnam. ' Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi City, Vietnam. ' Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi City, Vietnam. ' Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi City, Vietnam. ' Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi City, Vietnam. ' Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi City, Vietnam

Abstract: Novel nano-structured materials: nano-particle materials like V-SiO₂, TiO₂ and nano-sized pore materials like Si-MCM-41, Ti-MCM-41 and Al-MCM-41Analogues were successfully synthesised using different methods: precipitation, sol-gel, micro-emulsion and hydrothermal treatment. These obtained nano-structured materials were characterised by using different physico-chemical methods: FE-SEM, TEM, XRD, IR, UV-vis and nitrogen adsorption/desorption (BET). These materials were examined to investigate adsorptive and catalytic properties of the materials. Nano TiO₂ exhibited highly photocatalytic activity in the degradation of methyl red (MR). Pure silica form MCM-41 (Si-MCM-41Analogue) was a selective absorbent for VOCs (m-xylene) removal. Ti substituted MCM-41Analogue exhibited highly photocatalytic activity in the degradation of red phenol (RP) while Al substituted MCM-41Analogue showed high catalytic cracking of petroleum residue (Bach Ho oil field – Vietnam). The obtained results are discussed and rationalised.

Keywords: nanostructures; nanomaterials; sol-gel; hydrothermal treatment; photocatalytic degradation; phenol red; active dyes; FCC; fluidised catalytic cracking; nanotechnology; microemulsion; titanium dioxide; petroleum residue; pure silica.

DOI: 10.1504/IJNT.2011.038203

International Journal of Nanotechnology, 2011 Vol.8 No.3/4/5, pp.255 - 267

Published online: 21 Jan 2011 *

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