Solvothermal preparation and gas sensing properties of hierarchical pore structure SnO2 produced using grapefruit peel as a bio-template |
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| Affiliation: | 1. Institute of Physics, Slovak Academy of Sciences, Dubravska 9, 84511 Bratislava, Slovakia;2. Institute of Electrical Engineering, Slovak Academy of Sciences, Dubravska 9, 841 04 Bratislava, Slovakia;3. Institute of Microelectronics and Microsystems (C.N.R.-I.M.M.), via Monteroni, Campus Ecotekne, 73100 Lecce, Italy;1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China;2. State Key Laboratory of Transducer Technology, Chinese Academy of Science, PR China |
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| Abstract: | Hierarchical pore structure nano-sized SnO2 was synthesized using a solvothermal method with SnCl4 as the raw material and grapefruit peel as the bio-template. The products were characterized by powder X-ray diffraction, high resolution scanning electron microscopy, transmission electron microscopy and nitrogen adsorption/desorption measurements. The results show that the SnO2 prepared from the grapefruit peel bio-template consists of many large size (5–20 µm) interconnected pores with a honeycomb structure and nanosized pores (9.46 nm) on the walls of the large pores. The as-prepared SnO2 presented a high specific surface area of 42.98 m2/g and the average crystallite size was about 10±0.5 nm. The gas sensing performance of the prepared material toward several volatile organic compounds was investigated. The results show that the hierarchical pore structure nano-sized SnO2 was highly sensitive and selective to n-butanol, indicating that this material may be a promising candidate for future development as a n-butanol gas sensor. |
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| Keywords: | Mesoporous Gas sensor Bio-template |
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