LPG sensing properties of SnO<sub>2</sub> nanoparticles doped with several metal oxides by a hydrothermal method
Hien Vu, Xuan; Anh Ly, Tu Huy; Trung Khuc, Quang; Vuong Dang, Duc; Chien Nguyen, Duc; Hien Vu, Xuan; Institute of Engineering Physics, Hanoi University of Science and Technology, Community 1, Dai Co Viet Street, Hai Ba Trung District, Hanoi, Vietnam; Anh Ly, Tu Huy; Institute of Engineering Physics, Hanoi University of Science and Technology, Community 1, Dai Co Viet Street, Hai Ba Trung District, Hanoi, Vietnam; Trung Khuc, Quang; Institute of Engineering Physics, Hanoi University of Science and Technology, Community 1, Dai Co Viet Street, Hai Ba Trung District, Hanoi, Vietnam; University of Fire fighting and Protection, Community 243, Khut Duy Tien Street, Thanh Xuan District, Hanoi, Vietnam; Vuong Dang, Duc; Institute of Engineering Physics, Hanoi University of Science and Technology, Community 1, Dai Co Viet Street, Hai Ba Trung District, Hanoi, Vietnam; Chien Nguyen, Duc; Institute of Engineering Physics, Hanoi University of Science and Technology, Community 1, Dai Co Viet Street, Hai Ba Trung District, Hanoi, Vietnam
Журнал:
Advances in Natural Sciences: Nanoscience and Nanotechnology
Дата:
2010-06-01
Аннотация:
CuO, Al<sub>2</sub>O<sub>3</sub>, Ag<sub>2</sub>O and La<sub>2</sub>O<sub>3</sub> doped on SnO<sub>2</sub> nanoparticles were successfully fabricated by a hydrothermal route at 200 °C for 3 h. The morphology and composition were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and energy dispersive x-ray analysis (EDX). The results showed that the particle size is 6–8 nm without other impurities. The influence of CuO with a concentration of 0.5–3wt%, which was doped on sol SnO<sub>2</sub> 5wt% by hydrothermal and vibration technique, was discussed. In addition, the gas sensitivity experiment of samples to 1% LPG in the temperature range of 230–430 °C indicated the improvement in sensitivity and response time. In particular, the SnO<sub>2</sub> sol suspension 5wt% doped with CuO 2wt% showed the best sensitivity at 330 °C.
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