01638naa a2200253 a 450000100080000000500110000800800410001902200140006002400510007410000180012524500710014326000090021430000100022352009530023365300270118665300160121365300190122965300210124865300080126970000170127770000170129470000180131177300550132921441772024-01-23       2022    bl uuuu     u00u1 u    #d  a2666-05397 ahttps://doi.org/10.1016/j.snr.2022.1001002DOI1 aFRANCO, M. A.  aA review on chemiresistive ZnO gas sensors.h[electronic resource]  c2022  a21 p.  aChemiresistive gas sensors have been widely applied to monitor analytes of environmental, food and health importance. Among the plethora of materials that can be used for designing chemiresistive sensors, ZnO is one of the most explored for gas sensing, as this material has a low-cost, is non-toxic and can be easily obtained through standard chemical synthesis. Adding to this, ZnO can form heterostructures capable to improve sensor performance regarding sensitivity, selectivity and stability. Moreover, ZnO heterostructures also contribute to lower operating temperature of gas sensors, since the synergistic effects contribute to amplify the sensor signal. In this review, we survey recent advances on different types of chemiresistive ZnO-based gas sensors, focusing on how the morphology and structure of these materials influence on the sensor response. Challenges and future perspectives for ZnO chemiresistive sensors are also discussed.  aChemiresistive sensors  aGas sensors  aHeterojunction  aHybrid materials  aZnO1 aCONTI, P. P.1 aANDRE, R. S.1 aCORREA, D. S.  tSensors and Actuators Reportsgv. 4, 100100, 2022.