Remarkably Enhanced Room-Temperature Hydrogen Sensing of SnO2 Nanoflowers via Vacuum Annealing Treatment. - Gao Liu; Zhao Wang 005; Zihui Chen; Shulin Yang; Xingxing Fu; Rui Huang; Xiaokang Li; Juan Xiong; Yongming Hu; Haoshuang Gu (Sensors, 2018)