Flower-like ZnO hollow microspheres loaded with CdO nanoparticles as high performance sensing material for gas sensors. - Wang, Tianshuang; Kou, Xueying; Zhao, Liupeng; Sun, Peng; Liu, Chang; Wang, Yue; Shimanoe, Kengo; Yamazoe, Noboru; Lu, Geyu (Sensors & Actuators B: Chemical, 2017)