An environment-benign method for the synthesis of p-NiO/n-ZnO heterostructure with excellent performance for gas sensing and photocatalysis

作者：Liu, Yanli^*; Li, Guizhi; Mi, Riding; Deng, Congkun; Gao, Pengzhao

来源：Sensors and Actuators B: Chemical , 2014, 191: 537-544.

DOI：10.1016/j.snb.2013.10.068

• NiO/ZnO
• Heterojunciton
• Gas-sensor
• Photocatalysis

This paper reported a p-NiO/n-ZnO heterostructures synthesized by a low-cost and environment-friendly strategy. X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) spectroscopy were used to characterize the as-synthesized powders. The results indicated that the p-n heterostructures formed between the cubic structure NiO and hexangular structure ZnO in the NiO/ZnO composites. Furthermore, the gas sensing performance for detection of acetone and photocatalytic activity for the degradation of methyl orange (MO) of the NiO/ZnO composites was investigated. The composites showed much higher performance than that of pure NiO and ZnO, which could be ascribed to the formation of p-n heterojunctions in the NiO/ZnO composites.

• 出版日期2014-2
• 单位湖南大学