Assembly of 3D flower-like NiO hierarchical architectures by 2D nanosheets: Synthesis and their sensing properties to formaldehyde
作者： Xiaoguang San , Guodong Zhao , Guosheng Wang , Yanbai Shen , Dan Meng
DOI: 10.1039/C6RA25883B
关键词:
摘要: Flower-like NiO hierarchical architectures were synthesized by a solvothermal process without using any other surfactant. Absolute ethanol and distilled water adopted as solvent, nickel nitrate hexahydrate was employed the source. The morphology crystal structure mainly investigated. Through annealing as-obtained products, flower-like with cubic synthesized, which assembled number of thin nanosheets thickness about 30 nm. formaldehyde gas sensing measurements showed that well-defined structures large surface area exhibited higher responses compared microsheets/nanosheets at relatively lower operating temperature 200 °C. Moreover, reversible fast response to various concentrations, good selectivity stability obtained. results indicated are promising materials for sensors.
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