Article
Materials Science, Multidisciplinary
Kurugundla Gopi Krishna, Saidi Reddy Parne, P. Nagaraju
Summary: This paper presents the synthesis and gas-sensing characteristics of pure ZnO, TiO2 nanoparticles, and ZnO/TiO2 nanocomposite for detecting acetone at room temperature. The nanocomposite exhibits a combined phase structure and better performance compared to the pure nanoparticles. It shows excellent selectivity, quick response-recovery, and high sensitivity towards acetone detection, making it a promising material for diabetes screening.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
V. Vidhya, P. Anbarasu, D. Geetha
Summary: Gas sensing using Cu-doped SnO2-TiO2 nanostructures was investigated in this study. The optimized nanocomposite exhibited higher sensitivity to reducing gases, which was attributed to the enhanced gas diffusivity and catalytic properties of the material.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Analytical
Gayan W. C. Kumarage, Shasika A. Panamaldeniya, Dileepa C. Maddumage, Abderrahim Moumen, Valentin A. Maraloiu, Catalina G. Mihalcea, Raluca F. Negrea, Buddhika S. Dassanayake, Nanda Gunawardhana, Dario Zappa, Vardan Galstyan, Elisabetta Comini
Summary: Titanium dioxide nanobelts were prepared via the alkali-hydrothermal method and their formation process and gas-sensing properties were investigated. The results showed that the prepared nanobelts had a monoclinic phase and porous-like morphology, and exhibited a high response to acetone gas, making them promising for the development of low-power-consumption functional devices and gas detectors.
Article
Chemistry, Physical
Nirmal Roy, Rupam Sinha, Harshal B. Nemade, Tapas K. Mandal
Summary: A resistive room temperature acetone gas sensor based on MoS2-CuO nanocomposites was developed and studied in this work. The sensor exhibited high sensitivity, fast response and recovery time towards acetone, with good repeatability, reproducibility and stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Vikas Kumar, Rahul Madan, Devendra Mohan
Summary: Chemically synthesized pristine TiO2 and GO/TiO2 nanocomposites were used to fabricate room temperature acetone gas sensors. The crystal structure and surface morphology of the synthesized samples were investigated and controlled by varying the concentration of GO. The GO/TiO2 nanocomposite showed good response rate and response time to acetone at a concentration of 200 ppm.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Qiang Fu, Pengfei Lyu, Stephan Handschuh-Wang, Long Teng, Bo Zheng
Summary: A facile hydrothermal approach was used to prepare a series of hierarchical cobalt tetraoxide/multi-walled carbon nanotube composites with different MWCNT amount. The composites showed the formation of broccoli-like nano-agglomerates of Co3O4 nanoparticles anchored to the surface of the intertwined MWCNT network structure. The optimized Co3O4/MWCNT based chemiresistive sensor exhibited ultralow limit of detection, enhanced sensing response, short response and recovery time, as well as long-term stability, good reproducibility and high selectivity.
CERAMICS INTERNATIONAL
(2022)
Article
Crystallography
Nurul Athirah Abu Hussein, Yew Hoong Wong, Zainal Arif Burhanudin, Huzein Fahmi Hawari
Summary: The performance of a conventional metal oxide sensor is influenced by its high operating temperature. Researchers have explored ternary hybrid materials to overcome this issue. This article discusses the synthesis, characterization, and application of ternary hybrid materials for room-temperature sensors, highlighting recent advances and future developments. The materials consisted of metal oxide (Fe3O4), polymer (polyaniline), and carbon-based materials (reduced graphene oxide), with five samples prepared in different ratios. XRD, Raman, SEM, and TEM were used to characterize the materials, showing the presence of all constituents and a strong interaction between them in the hybrid nanocomposite. The sample with 10 wt%Fe3O4-PANI-RGO exhibited the fastest response and recovery time as well as the highest sensing response at room temperature.
Article
Materials Science, Multidisciplinary
Armando D. Martinez-Iniesta, Aaron Morelos-Gomez, Juan P. Moran-Lazaro, Emilio Munoz-Sandoval, Florentino Lopez-Urias
Summary: In this study, zigzagging graphitic ribbons (ZGR) sponges with a defective, corrugated, and oxygen-functionalized surface were synthesized using aerosol assisted chemical vapor deposition (AACVD) method. Sensors based on ZGR sponges showed stable performance and fast response times (2-12 s) when detecting acetone gas vapor. Acetone serves as a selective breath marker for diabetes, suggesting the potential application of these sensors for non-invasive diabetes monitoring.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Shulong Chang, Mengya Yang, Rui Pang, Li Ye, Xinchang Wang, Anyuan Cao, Yuanyuan Shang
Summary: The carbon nanotube-anatase titanium dioxide (CNT/a-TiO2) film sensor exhibits good sensitivity, fast response, reversibility, and high selectivity towards toxic gases. Its lightweight and high-performance characteristics make it a promising candidate for future wearable electronics and gas monitoring devices.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Miao Liu, Jun Ji, Peng Song, Min Liu, Qi Wang
Summary: The study synthesized heterogeneous composites of α-Fe2O3 and Ti3C2Tx MXene, which exhibited outstanding selectivity towards acetone at room temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Miao Liu, Zeyu Wang, Peng Song, Zhongxi Yang, Qi Wang
Summary: In this study, a high-performance room temperature gas-sensing material was successfully developed by utilizing MXene and reduced graphene oxide as building blocks. The resulting 3D aerogel shows excellent acetone-sensing performance at room temperature, with fast response and recovery times, as well as good reproducibility and selectivity. This strategy of composite 3D graphene/MXene architectures with metal oxide semiconductors provides a new pathway for future development of room temperature gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Jae-Hyoung Lee, Jin-Young Kim, Myung-Sung Nam, Ali Mirzaei, Hyoun Woo Kim, Sang Sub Kim
Summary: Ternary hybrid composite of PANI-loaded Co3O4-TiO2 nanoparticles was synthesized and investigated for acetone sensing at 25°C. The 0.01 wt% PANI-loaded 0.85TiO2-0.15 Co3O4 composite nanoparticles showed the highest response to acetone under UV illumination. The improved performance was attributed to the formation of p-n heterojunctions, promising effects of PANI, and the UV light effect. This study highlights the potential of these compounds or related compounds for highly reliable acetone sensing at 25°C.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Multidisciplinary
Ensi Cao, Yixuan Zhang, Yongjia Zhang, Wentao Hao, Bing Sun, Li Sun
Summary: In this study, commercial TiO2 nanoparticles were used as additives and directly mixed with LaFeO3 nanoparticles to prepare TiO2-LaFeO3 nanocomposites. The resulting nanocomposites showed higher surface reactivity and oxygen vacancy contents compared to pure LaFeO3 nanoparticles, and the introduction of TiO2 facilitated the formation of p-n heterojunctions. Therefore, TiO2-LaFeO3 nanocomposites demonstrated enhanced acetone sensing performance.
Article
Chemistry, Physical
Ines C. Weber, Chang-ting Wang, Andreas T. Guntner
Summary: This study presents room-temperature catalytic filters for highly selective acetone sensing, successfully removing interferants without the need for additional heating. These filters are suitable for integration into mobile health care devices.
Article
Chemistry, Analytical
Sovandeb Sen, Amit Nilabh, Susmita Kundu
Summary: The study explores an enhanced sub-ppm level acetone sensing performance of a nanocrystalline Fe2O3 thin film impregnated with Pt and Sb2O3, showing good response and recovery time at room temperature. The thin film exhibited a sensing response of -2.4 to 1 ppm acetone with a recovery time of 95 seconds.
MICROCHEMICAL JOURNAL
(2021)