TY - JOUR AU - W. Tang AU - J. Wang PY - 2016/10/12 Y2 - 2024/03/29 TI - 1D NiO-SnO2 Heterojunction Nanofibers as Acetone Sensor JF - KnE Materials Science JA - Kms VL - 1 IS - 1 SE - Articles DO - 10.18502/kms.v1i1.581 UR - https://knepublishing.com/index.php/KnE-Materials/article/view/581 AB - 1D NiO-SnO2 nanofibers with p-n heterostructure were synthesized by electrospinning with post-synthetic heat treatment. The morphology and composition were characterized by scanning electron microscope, X-ray diffraction, and energy dispersive X-ray spectrometry. A possible growth model was proposed to describe the formation of hierarchical NiO-SnO2. The gas sensors based on NiO-SnO2 exhibited p-type response to acetone. The excellent acetone sensing properties may be attributed to numerous p-n junctions between NiO and SnO2 nanograins as well as the unique architecture. The changes of energy level and space charge layer of NiO-SnO2 heterojunction nanofibers when exposed to acetone are described in detail. ER -