Recent advances in p-type delafossite ABO2 based chemiresistive gas sensors

IF 8 1区化学 Q1 CHEMISTRY, ANALYTICAL

Sensors and Actuators B: Chemical Pub Date : 2025-03-16 DOI:10.1016/j.snb.2025.137606

Sunil Kumar , Zanhong Deng , Siyuan Liu , Gang Meng

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引用次数: 0

Abstract

Exploring novel ternary oxide sensing materials with distinctive/ tuneablesurface properties, beyond the conventional binary oxides (n-type SnO₂, ZnO, WO₃, etc.), has attracted increasing attention for constructing large sensor arrays for advanced E-nose with exceptional recognition capability. Delafossite ABO₂ (A is monovalent cation Ag or Cu, B is trivalent cations Al, Cr or Ga, etc.) oxides, featured by species diversity (more than 20 species with distinctive catalytic properties) and p-type conductivity, have emerged as exciting contenders for the next generation of IoT or E-nose sensors. Beginning with the fundamental properties of delafossite oxides, this review summarizes the progress of delafossite based chemiresistive gas sensors, emphasizes the crucial role of defects engineering, single atom (SA) anchoring and pulsed temperature modulation (PTM) in enhancing sensitivity towards the specific target gases. Finally, their promising applications in diverse areas have been anticipated.

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来源期刊

Sensors and Actuators B: Chemical 工程技术-电化学

CiteScore

14.60

自引率

11.90%

发文量

1776

审稿时长

3.2 months

期刊介绍： Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.