OICC Press Journal of Nanostructure in Chemistry 2193-8865 13 6 (December 2023) 2022 03 12 Ru-functionalized Ni-doped dual phases of α/γ-Fe2O3 nanosheets for an optimized acetone detection 10.1007/s40097-022-00475-4 EN Ruonan Tian School of Materials and Energy, Yunnan University, Kunming, 650091, CN Zeyuan Gao School of Materials and Energy, Yunnan University, Kunming, 650091, CN Ruifeng Lang School of Materials and Energy, Yunnan University, Kunming, 650091, CN Na Li School of Materials and Energy, Yunnan University, Kunming, 650091, CN Huilin Gu School of Materials and Energy, Yunnan University, Kunming, 650091, CN Gang Chen School of Materials and Energy, Yunnan University, Kunming, 650091, CN Hongtao Guan School of Materials and Energy, Yunnan University, Kunming, 650091, CN Elisabetta Comini Sensor, Department of Information Engineering, University of Brescia, Brescia, 25123, IT Chengjun Dong School of Materials and Energy, Yunnan University, Kunming, 650091, CN Journal Article 2022 03 12 Abstract Lately novel strategies to enhance the sensing properties on iron oxide have been proposed to achieve high performance gas sensors for acetone detection. In this working report, the synthesis of iron-glycerate (Fe-Gly) using glycerol to combine with Fe 3+ is first presented. Depending on the thermal treatment, this compound can evolve into γ-Fe 2 O 3 , α/γ-Fe 2 O 3 and α-Fe 2 O 3 . α/γ-Fe 2 O 3 shows better sensing performance as far as acetone detection is concerned. Using the dual phases of α/γ-Fe 2 O 3 as a fundamental building block, their sensing properties were further improved using Ni doping and Ru nanoparticles functionalization. The high response and selectivity to acetone detection was ascribed to the synergistic effects of unique nanosheets, mixed phases, rich oxygen vacancies and excellent catalytic activity of Ru nanoparticles. Graphical abstract