title: Morphology-modulation of SnO2 hierarchical architectures by Zn doping for glycol gas sensing and photocatalytic applications.
abstract: The morphology of SnO2 nanospheres was transformed into ultrathin nanosheets assembled architectures after Zn doping by one-step hydrothermal route. The as-prepared samples were characterized in detail by various analytical techniques including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and nitrogen adsorption-desorption technique. The Zn-doped SnO2 nanostructures proved to be the efficient gas sensing materials for a series of flammable and explosive gases detection, and photocatalysts for the degradation of methyl orange (MO) under UV irradiation. It was observed that both of the undoped and Zn-doped SnO2 after calcination exhibited tremendous gas sensing performance toward glycol. The response (S = Ra/Rg) of Zn-doped SnO2 can reach to 90 when the glycol concentration is 100 ppm, which is about 2 times and 3 times higher than that of undoped SnO2 sensor with and without calcinations, respectively. The result of photocatalytic activities demonstrated that MO dye was almost completely degraded (~92%) by Zn-doped SnO2 in 150 min, which is higher than that of others (MO without photocatalyst was 23%, undoped SnO2 without and with calcination were 55% and 75%, respectively).
authors.affiliation: School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan, 250022, Shandong Province, Peoples Republic of China.
authors.forename: Qinqin
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: School of Materials Science and Engineering, University of Jinan.
authors.forename: Dianxing
authors.initials: D
authors.lastname: Ju
authors.affiliation: School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan, 250022, Shandong Province, Peoples Republic of China.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Deng
authors.affiliation: School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan, 250022, Shandong Province, Peoples Republic of China.
authors.forename: Jinzhao
authors.initials: J
authors.lastname: Huang
authors.affiliation: School of Materials Science and Engineering, University of Jinan.
authors.forename: Bingqiang
authors.initials: B
authors.lastname: Cao
authors.affiliation: School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan, 250022, Shandong Province, Peoples Republic of China.
authors.forename: Xijin
authors.initials: X
authors.lastname: Xu